'Release: 3.2.0rc0'

Document moving and rename. Fixes for latest xdoc.

.github/CODEOWNERS

@@ -0,0 +1 @@
+*  @xross

.gitignore

@@ -22,6 +22,7 @@ _build*
 **/.venv/**
 **/.vscode/**
 **.egg-info
+*.pdf
 
 # waf build files
 .lock-waf_*

Brewfile

@@ -1,7 +0,0 @@
-tap 'homebrew/core'
-
-brew 'perl'
-brew 'cpanm'
-
-brew 'python@2'
-brew 'pipenv'

CHANGELOG.rst

@@ -1,14 +1,47 @@
 lib_xua Change Log
 ==================
 
+3.2.0
+-----
+
+  * CHANGED:   Updated tests to use lib_locks (was legacy module_locks)
+  * CHANGED:   Exclude HID Report functions unless the HID feature is enabled
+  * CHANGED:   Explicit feedback EP enabled by default (see
+    UAC_FORCE_FEEDBACK_EP)
+  * FIXED:     Incorrect conditional compilation of HID report code
+  * FIXED:     Input/output descriptors written when input/output not enabled. (Audio
+  class 1.0 mode using XUA_USB_DESCRIPTOR_OVERWRITE_RATE_RES)
+
+  * Changes to dependencies:
+
+    - lib_dsp: 5.0.0 -> 6.2.1
+
+    - lib_locks: Added dependency 2.1.0
+
+    - lib_logging: 3.0.0 -> 3.1.1
+
+    - lib_mic_array: 4.0.0 -> 4.3.0
+
+    - lib_spdif: 4.0.0 -> 4.1.0
+
+    - lib_xassert: 4.0.0 -> 4.1.0
+
+    - lib_xud: 2.0.0 -> 2.2.0
+
+3.1.0
+-----
+
+  * CHANGED:   Removed logic from HID API functions allowing a Report ID of 0 to
+    be used as "all/any" Report
+
 3.0.0
 -----
 
   * ADDED:     Support for HID Report IDs
-  * REMOVED:   Support for HID Reports containing controls from mixed Usage
-    pages
   * CHANGED:   Renamed the HID API file xua_hid_report_descriptor.h to
     xua_hid_report.h
+  * REMOVED:   Support for HID Reports containing controls from mixed usage
+    pages
 
 2.1.1
 -----
@@ -19,56 +52,53 @@ lib_xua Change Log
 -----
 
   * CHANGED:   Updated clock blocks to support lib_xud v2.0.0
-  * CHANGED:   Updated dependency on lib_xud to v2.0.0 for use by XVF3600
 
-2.0.1
------
+  * Changes to dependencies:
 
-  * CHANGED:   Reverted dependency on lib_xud to v1.2.0 for use by XVF3510
+    - lib_xud: 1.2.0 -> 2.0.0
 
 2.0.0
 -----
 
   * ADDED:     Function to get a Report item description
+  * ADDED:     Support for multiple flash specs defined by DFU_FLASH_DEVICE
+  * ADDED:     Nullable c_aud_ctl chan-end optimisation for fixed rate devices
   * CHANGED:   Check HID Usage Page when changing a Report item description
   * CHANGED:   HID event ID from list to bit and byte location in HID Report
   * CHANGED:   Interface to UserHIDRecordEvent()
-  * ADDED:     Support for multiple flash specs defined by DFU_FLASH_DEVICE
-  * ADDED:     Nullable c_aud_ctl chan-end optimisation for fixed rate devices
 
 1.3.0
 -----
 
+  * ADDED:     Build default HID Report descriptor at boot-time
+  * ADDED:     Function to return length of HID Report
   * CHANGED:   Move HID descriptors to ease maintenance
   * CHANGED:   Move legacy tests to separate directory
   * CHANGED:   Replace unused GPI-specific HID event names with generic ones
-  * ADDED:     Build default HID Report descriptor at boot-time
-  * ADDED:     Function to return length of HID Report
   * CHANGED:   HID Report to return multiple bytes
   * CHANGED:   NO_USB conditional compilation switch with XUA_USB_EN
-  * REMOVED:   XS1 support
   * CHANGED:   Clock blocks used for BCLK and MCLK
-  * REMOVED:   Arguments no longer supported by XUD_Main
+  * CHANGED:   Arguments no longer supported by XUD_Main
+  * REMOVED:   Support for XS1 based devices
 
 1.2.0
 -----
 
   * ADDED:     Updates for xcore.ai/XS3 compatibility
   * ADDED:     Makefile.Win32 for xmosdfu on Windows
+  * CHANGED:   Use XMOS Public Licence Version 1
   * FIXED:     Bump default BCD device number to v1.2.0
   * FIXED:     xmosdfu now fails with an error when given a directory (#119)
   * FIXED:     Compilation errors related to HID code
   * FIXED:     Runtime error when using mic array interface
-  * CHANGED:   Use XMOS Public Licence Version 1
   * FIXED:     Automate HID Report Descriptor length in AC1 HID Descriptor
 
 1.1.1
 -----
 
-  * RESOLVED: Zero length input packets generated before enumeration causing I2S
-    timing pushout at startup
-  * CHANGED: Pin Python package versions
-  * REMOVED: not necessary cpanfile
+  * CHANGED:   Pin Python package versions
+  * FIXED:     Zero length input packets generated before enumeration causing
+    I2S timing pushout at startup
 
 1.1.0
 -----
@@ -88,13 +118,12 @@ lib_xua Change Log
   * ADDED:     Support for USB HID Set Idle request
   * ADDED:     Pre-processor symbols to enable single-threaded, dual-PDM
     microphone operation
-  * FIXED:     Descriptors for XUA_ADAPTIVE incorrectly defined for IN endpoint
   * ADDED:     Guards to user_hid.h and xua_hid.h
   * ADDED:     UAC1 HID support for AC Stop (End Call), Volume Increment and
     Volume Decrement
-  * CHANGE:    UAC1 HID to report function keys f21 through f24 as specified by
+  * CHANGED:   UAC1 HID to report function keys f21 through f24 as specified by
     customer
-  * CHANGE:    HID interface for user to set and clear events from global
+  * CHANGED:   HID interface for user to set and clear events from global
     variable to function
   * CHANGE     HID report descriptor to use generic events instead of GPI
     events, to report Key-phrase detection as AC Search, and to report end-call
@@ -104,11 +133,24 @@ lib_xua Change Log
   * ADDED:     Override USB descriptor with sampling frequency and
     bit-resolution set at boot time.
   * ADDED:     Global pointer to allow external access to masterClockFreq
+  * FIXED:     Descriptors for XUA_ADAPTIVE incorrectly defined for IN endpoint
+
+  * Changes to dependencies:
+
+    - lib_spdif: 3.1.0 -> 4.0.0
+
+    - lib_xassert: 3.0.1 -> 4.0.0
 
 0.2.1
 -----
 
-  * HOTFIX: Fix descriptors for XUA_ADAPTIVE
+  * FIXED:     Fix descriptors for XUA_ADAPTIVE
+
+  * Changes to dependencies:
+
+    - lib_logging: 2.1.1 -> 3.0.0
+
+    - lib_xud: 0.1.0 -> 0.2.0
 
 0.2.0
 -----
@@ -116,17 +158,17 @@ lib_xua Change Log
   * ADDED:     Initial library documentation
   * ADDED:     Application note AN00247: Using lib_xua with lib_spdif (transmit)
   * ADDED:     Separate callbacks for input/output audio stream start/stop
-  * CHANGE:    I2S hardware resources no longer used globally and must be passed
+  * CHANGED:   I2S hardware resources no longer used globally and must be passed
     to XUA_AudioHub()
-  * CHANGE:    XUA_AudioHub() no longer pars S/PDIF transmitter task
-  * CHANGE:    Moved to lib_spdif (from module_spdif_tx & module_spdif_rx)
-  * CHANGE:    Define NUM_PDM_MICS renamed to XUA_NUM_PDM_MICS
-  * CHANGE:    Define NO_USB renamed to XUA_USB_EN
-  * CHANGE:    Build files updated to support new "xcommon" behaviour in xwaf.
-  * RESOLVED:  wChannelConfig in UAC1 descriptor set according to output channel
+  * CHANGED:   XUA_AudioHub() no longer pars S/PDIF transmitter task
+  * CHANGED:   Moved to lib_spdif (from module_spdif_tx & module_spdif_rx)
+  * CHANGED:   Define NUM_PDM_MICS renamed to XUA_NUM_PDM_MICS
+  * CHANGED:   Define NO_USB renamed to XUA_USB_EN
+  * CHANGED:   Build files updated to support new "xcommon" behaviour in xwaf.
+  * FIXED:     wChannelConfig in UAC1 descriptor set according to output channel
     count
-  * RESOLVED:  Indexing of ADAT channel strings (#18059)
-  * RESOLVED:  Rebooting device fails when PLL config "not reset" bit is set
+  * FIXED:     Indexing of ADAT channel strings (#18059)
+  * FIXED:     Rebooting device fails when PLL config "not reset" bit is set
 
   * Changes to dependencies:
 
@@ -142,20 +184,19 @@ lib_xua Change Log
 -----
 
   * ADDED:     Application note AN00246: Simple USB Audio Device using lib_xua
-  * CHANGE:    xmosdfu emits warning if empty image read via upload
-  * CHANGE:    Simplified mclk port sharing - no longer uses unsafe pointer
-  * RESOLVED:  Runtime exception issues when incorrect feedback calculated
+  * CHANGED:   xmosdfu emits warning if empty image read via upload
+  * CHANGED:   Simplified mclk port sharing - no longer uses unsafe pointer
+  * FIXED:     Runtime exception issues when incorrect feedback calculated
     (introduced in sc_usb_audio 6.13)
-  * RESOLVED:  Output sample counter reset on stream start. Caused playback
+  * FIXED:     Output sample counter reset on stream start. Caused playback
     issues on some Linux based hosts
 
 0.1.1
 -----
 
-  * RESOLVED:   Configurations where I2S_CHANS_DAC and I2S_CHANS_ADC are both 0
-    now build
-  * RESOLVED:   Deadlock in mixer when MAX_MIX_COUNT > 0 for larger channel
-    counts
+  * FIXED:   Configurations where I2S_CHANS_DAC and I2S_CHANS_ADC are both 0 now
+    build
+  * FIXED:   Deadlock in mixer when MAX_MIX_COUNT > 0 for larger channel counts
 
   * Changes to dependencies:
 
@@ -166,31 +207,31 @@ lib_xua Change Log
 0.1.0
 -----
 
-  * ADDED:      FB_USE_REF_CLOCK to allow feedback generation from xCORE
-    internal reference
-  * ADDED:      Linux Makefile for xmosdfu host application
-  * ADDED:      Raspberry Pi Makefile for xmosdfu host application
-  * ADDED:      Documentation of PID argument to xmosdfu
-  * ADDED:      Optional build time microphone delay line (MIC_BUFFER_DEPTH)
-  * CHANGE:     Removal of audManage_if, users should define their own
-    interfaces as required
-  * CHANGE:     Vendor specific control interface in UAC1 descriptor now has a
+  * ADDED:     FB_USE_REF_CLOCK to allow feedback generation from xCORE internal
+    reference
+  * ADDED:     Linux Makefile for xmosdfu host application
+  * ADDED:     Raspberry Pi Makefile for xmosdfu host application
+  * ADDED:     Documentation of PID argument to xmosdfu
+  * ADDED:     Optional build time microphone delay line (MIC_BUFFER_DEPTH)
+  * CHANGED:   Removal of audManage_if, users should define their own interfaces
+    as required
+  * CHANGED:   Vendor specific control interface in UAC1 descriptor now has a
     string descriptor so it shows up with a descriptive name in Windows Device
     Manager
-  * CHANGE:     DFU_BCD_DEVICE removed (now uses BCD_DEVICE)
-  * CHANGE:     Renaming in descriptors.h to avoid clashes with application
-  * CHANGE:     Make device reboot function no-argument (was one channel end)
-  * RESOLVED:   FIR gain compensation for PDM mics set incorrectly for divide of
+  * CHANGED:   DFU_BCD_DEVICE removed (now uses BCD_DEVICE)
+  * CHANGED:   Renaming in descriptors.h to avoid clashes with application
+  * CHANGED:   Make device reboot function no-argument (was one channel end)
+  * FIXED:     FIR gain compensation for PDM mics set incorrectly for divide of
     8
-  * RESOLVED:   Incorrect xmosdfu DYLD path in test script code
-  * RESOLVED:   xmosdfu cannot find XMOS device on modern MacBook Pro (#17897)
-  * RESOLVED:   Issue when feedback is initially incorrect when two SOF's are
-    not yet received
-  * RESOLVED:   AUDIO_TILE and PDM_TILE may now share the same value/tile
-  * RESOLVED:   Cope with out of order interface numbers in xmosdfu
-  * RESOLVED:   DSD playback not functional on xCORE-200 (introduced in
+  * FIXED:     Incorrect xmosdfu DYLD path in test script code
+  * FIXED:   xmosdfu cannot find XMOS device on modern MacBook Pro (#17897)
+  * FIXED:   Issue when feedback is initially incorrect when two SOF's are not
+    yet received
+  * FIXED:   AUDIO_TILE and PDM_TILE may now share the same value/tile
+  * FIXED:   Cope with out of order interface numbers in xmosdfu
+  * FIXED:   DSD playback not functional on xCORE-200 (introduced in
     sc_usb_audio 6.14)
-  * RESOLVED:   Improvements made to clock sync code in TDM slave mode
+  * FIXED:   Improvements made to clock sync code in TDM slave mode
 
 
 Legacy release history
@@ -200,105 +241,105 @@ Legacy release history
 
 7.4.1
 -----
-    - RESOLVED:   Exception due to null chanend when using NO_USB
+    - FIXED:   Exception due to null chanend when using NO_USB
 
 7.4.0
 -----
-    - RESOLVED:   PID_DFU now based on AUDIO_CLASS. This potentially caused issues
+    - FIXED:   PID_DFU now based on AUDIO_CLASS. This potentially caused issues
       with UAC1 DFU
 
 
 7.3.0
 -----
-    - CHANGE:     Example OSX DFU host app updated to now take PID as runtime
+    - CHANGED:    Example OSX DFU host app updated to now take PID as runtime
       argument. This enabled multiple XMOS devices to be attached to the host
       during DFU process
 
 7.2.0
 -----
     - ADDED:      DFU to UAC1 descriptors (guarded by DFU and FORCE_UAC1_DFU)
-    - RESOLVED:   Removed 'reinterpretation to type of larger alignment' warnings
-    - RESOLVED:   DFU flash code run on tile[0] even if XUD_TILE and AUDIO_IO_TILE are not 0
+    - FIXED:      Removed 'reinterpretation to type of larger alignment' warnings
+    - FIXED:      DFU flash code run on tile[0] even if XUD_TILE and AUDIO_IO_TILE are not 0
 
 7.1.0
 -----
     - ADDED:      UserBufferManagementInit() to reset any state required in UserBufferManagement()
     - ADDED:      I2S output up-sampling (enabled when AUD_TO_USB_RATIO is > 1)
     - ADDED:      PDM Mic decimator output rate can now be controlled independently (via AUD_TO_MICS_RATIO)
-    - CHANGE:     Rename I2S input down-sampling (enabled when AUD_TO_USB_RATIO is > 1, rather than via I2S_DOWNSAMPLE_FACTOR)
-    - RESOLVED:   Crosstalk between input channels when I2S input down-sampling is enabled
-    - RESOLVED:   Mic decimation data tables properly sized when mic sample-rate < USB audio sample-rate
+    - CHANGED:    Rename I2S input down-sampling (enabled when AUD_TO_USB_RATIO is > 1, rather than via I2S_DOWNSAMPLE_FACTOR)
+    - FIXED:      Crosstalk between input channels when I2S input down-sampling is enabled
+    - FIXED:      Mic decimation data tables properly sized when mic sample-rate < USB audio sample-rate
 
 7.0.1
 -----
-    - RESOLVED:   PDM microphone decimation issue at some sample rates caused by integration
+    - FIXED:      PDM microphone decimation issue at some sample rates caused by integration
 
 7.0.0
 ------
     - ADDED:      I2S down-sampling (I2S_DOWNSAMPLE_FACTOR)
     - ADDED:      I2S resynchronisation when in slave mode (CODEC_MASTER=1)
-    - CHANGE:     Various memory optimisations when MAX_FREQ = MIN_FREQ
-    - CHANGE:     Memory optimisations in audio buffering
-    - CHANGE:     Various memory optimisations in UAC1 mode
-    - CHANGE:     user_pdm_process() API change
-    - CHANGE:     PDM Mic decimator table now related to MIN_FREQ (memory optimisation)
-    - RESOLVED:   Audio request interrupt handler properly eliminated
+    - CHANGED:    Various memory optimisations when MAX_FREQ = MIN_FREQ
+    - CHANGED:    Memory optimisations in audio buffering
+    - CHANGED:    Various memory optimisations in UAC1 mode
+    - CHANGED:    user_pdm_process() API change
+    - CHANGED:    PDM Mic decimator table now related to MIN_FREQ (memory optimisation)
+    - FIXED:      Audio request interrupt handler properly eliminated
 
 6.30.0
 ------
-    - RESOLVED:   Number of PDM microphone channels configured now based on NUM_PDM_MICS define
-                  (previously hard-coded)
-    - RESOLVED:   PDM microphone clock divide now based MCLK defines (previously hard-coded)
-    - CHANGE:     Second microphone decimation core only run if NUM_PDM_MICS > 4
+    - FIXED:   Number of PDM microphone channels configured now based on NUM_PDM_MICS define
+    (previously hard-coded)
+    - FIXED:   PDM microphone clock divide now based MCLK defines (previously hard-coded)
+    - CHANGED: Second microphone decimation core only run if NUM_PDM_MICS > 4
 
 6.20.0
 ------
-    - RESOLVED:   Intra-frame sample delays of 1/2 samples on input streaming in TDM mode
-    - RESOLVED:   Build issue with NUM_USB_CHAN_OUT set to 0 and MIXER enabled
-    - RESOLVED:   SPDIF_TX_INDEX not defined build warning only emitted when SPDIF_TX defined
-    - RESOLVED:   Failure to enter DFU mode when configured without input volume control
+    - FIXED:   Intra-frame sample delays of 1/2 samples on input streaming in TDM mode
+    - FIXED:   Build issue with NUM_USB_CHAN_OUT set to 0 and MIXER enabled
+    - FIXED:   SPDIF_TX_INDEX not defined build warning only emitted when SPDIF_TX defined
+    - FIXED:   Failure to enter DFU mode when configured without input volume control
 
 6.19.0
 ------
-    - RESOLVED:   SPDIF_TX_INDEX not defined build warning only emitted when SPDIF_TX defined
-    - RESOLVED:   Failure to enter DFU mode when configured without input volume control
+    - FIXED:   SPDIF_TX_INDEX not defined build warning only emitted when SPDIF_TX defined
+    - FIXED:   Failure to enter DFU mode when configured without input volume control
 
 6.18.1
 ------
-    - ADDED:      Vendor Specific control interface added to UAC1 descriptors to allow control of
-                  XVSM params from Windows (via lib_usb)
+    - ADDED:   Vendor Specific control interface added to UAC1 descriptors to allow control of
+                XVSM params from Windows (via lib_usb)
 
 6.18.0
 ------
-    - ADDED:      Call to VendorRequests() and VendorRequests_Init() to Endpoint 0
-    - ADDED:      VENDOR_REQUESTS_PARAMS define to allow for custom parameters to VendorRequest calls
-    - RESOLVED:   FIR gain compensation set appropriately in lib_mic_array usage
-    - CHANGE:     i_dsp interface renamed i_audManage
+    - ADDED:   Call to VendorRequests() and VendorRequests_Init() to Endpoint 0
+    - ADDED:   VENDOR_REQUESTS_PARAMS define to allow for custom parameters to VendorRequest calls
+    - FIXED:   FIR gain compensation set appropriately in lib_mic_array usage
+    - CHANGED: i_dsp interface renamed i_audManage
 
 6.16.0
 ------
     - ADDED:      Call to UserBufferManagement()
     - ADDED:      PDM_MIC_INDEX in devicedefines.h and usage
-    - CHANGE:     pdm_buffer() task now combinable
-    - CHANGE:     Audio I/O task now takes i_dsp interface as a parameter
-    - CHANGE:     Removed built-in support for A/U series internal ADC
-    - CHANGE:     User PDM Microphone processing now uses an interface (previously function call)
+    - CHANGED:    pdm_buffer() task now combinable
+    - CHANGED:    Audio I/O task now takes i_dsp interface as a parameter
+    - CHANGED:    Removed built-in support for A/U series internal ADC
+    - CHANGED:    User PDM Microphone processing now uses an interface (previously function call)
 
 6.15.2
 ------
-    - RESOLVED:   interrupt.h (used in audio buffering) now compatible with xCORE-200 ABI
+    - FIXED:   interrupt.h (used in audio buffering) now compatible with xCORE-200 ABI
 
 6.15.1
 ------
-    - RESOLVED:   DAC data mis-alignment issue in TDM/I2S slave mode
-    - CHANGE:     Updates to support API changes in lib_mic_array version 2.0
+    - FIXED:   DAC data mis-alignment issue in TDM/I2S slave mode
+    - CHANGED:    Updates to support API changes in lib_mic_array version 2.0
 
 6.15.0
 ------
 
-    - RESOLVED:   UAC 1.0 descriptors now support multi-channel volume control (previously were
+    - FIXED:   UAC 1.0 descriptors now support multi-channel volume control (previously were
                   hard-coded as stereo)
-    - CHANGE:     Removed 32kHz sample-rate support when PDM microphones enabled (lib_mic_array
+    - CHANGED:    Removed 32kHz sample-rate support when PDM microphones enabled (lib_mic_array
                   currently does not support non-integer decimation factors)
 
 6.14.0
@@ -312,75 +353,75 @@ Legacy release history
                   list and UAC 1.0 descriptors
     - ADDED:      Support for the use and integration of PDM microphones (including PDM to PCM
                   conversion) via lib_mic_array
-    - RESOLVED:   MIDI data not accepted after "sleep" in OSX 10.11 (El Capitan) - related to sc_xud
+    - FIXED:   MIDI data not accepted after "sleep" in OSX 10.11 (El Capitan) - related to sc_xud
                   issue #17092
-    - CHANGE:     Asynchronous feedback system re-implemented to allow for the first two ADDED
+    - CHANGED:    Asynchronous feedback system re-implemented to allow for the first two ADDED
                   changelog items
-    - CHANGE:     Hardware divider used to generate bit-clock from master clock (xCORE-200 only).
+    - CHANGED:    Hardware divider used to generate bit-clock from master clock (xCORE-200 only).
                   Allows easy support for greater number of master-clock to sample-rate ratios.
-    - CHANGE:     module_queue no longer uses any assert module/lib
+    - CHANGED:    module_queue no longer uses any assert module/lib
 
 6.13.0
 ------
     - ADDED:      Device now uses implicit feedback when input stream is available (previously explicit
                   feedback pipe always used). This saves chanend/EP resources and means less processing
                   burden for the host. Previous behaviour available by enabling UAC_FORCE_FEEDBACK_EP
-    - RESOLVED:   Exception when SPDIF_TX and ADAT_TX both enabled due to clock-block being configured
+    - FIXED:   Exception when SPDIF_TX and ADAT_TX both enabled due to clock-block being configured
                   after already started. Caused by SPDIF_TX define check typo
-    - RESOLVED:   DFU flag address changed to properly conform to memory address range allocated to
+    - FIXED:   DFU flag address changed to properly conform to memory address range allocated to
                   apps by tools
-    - RESOLVED:   Build failure when DFU disabled
-    - RESOLVED:   Build issue when I2S_CHANS_ADC/DAC set to 0 and CODEC_MASTER enabled
-    - RESOLVED:   Typo in MCLK_441 checking for MIN_FREQ define
-    - CHANGE:     Mixer and non-mixer channel comms scheme (decouple <-> audio path) now identical
-    - CHANGE:     Input stream buffering modified such that during overflow older samples are removed
+    - FIXED:   Build failure when DFU disabled
+    - FIXED:   Build issue when I2S_CHANS_ADC/DAC set to 0 and CODEC_MASTER enabled
+    - FIXED:   Typo in MCLK_441 checking for MIN_FREQ define
+    - CHANGED:    Mixer and non-mixer channel comms scheme (decouple <-> audio path) now identical
+    - CHANGED:    Input stream buffering modified such that during overflow older samples are removed
                   rather than ignoring most recent samples. Removes any chance of stale input packets
                   being sent to host
-    - CHANGE:     module_queue (in sc_usb_audio) now uses lib_xassert rather than module_xassert
+    - CHANGED:    module_queue (in sc_usb_audio) now uses lib_xassert rather than module_xassert
 
 6.12.6
 ------
-    - RESOLVED:   Build error when DFU is disabled
-    - RESOLVED:   Build error when I2S_CHANS_ADC or I2S_CHANS_DAC set to 0 and CODEC_MASTER enabled
+    - FIXED:   Build error when DFU is disabled
+    - FIXED:   Build error when I2S_CHANS_ADC or I2S_CHANS_DAC set to 0 and CODEC_MASTER enabled
 
 6.12.5
 ------
-    - RESOLVED:   Stream issue when NUM_USB_CHAN_IN < I2S_CHANS_ADC
+    - FIXED:   Stream issue when NUM_USB_CHAN_IN < I2S_CHANS_ADC
 
 6.12.4
 ------
-    - RESOLVED:   DFU fail when DSD enabled and USB library not running on tile[0]
+    - FIXED:   DFU fail when DSD enabled and USB library not running on tile[0]
 
 6.12.3
 ------
-    - RESOLVED:   Method for storing persistent state over a DFU reboot modified to improve resilience
+    - FIXED:   Method for storing persistent state over a DFU reboot modified to improve resilience
                   against code-base and tools changes
 
 6.12.2
 ------
-    - RESOLVED:   Reboot code (used for DFU) failure in tools versions > 14.0.2 (xCORE-200 only)
-    - RESOLVED:   Run-time exception in mixer when MAX_MIX_COUNT > 0 (xCORE-200 only)
-    - RESOLVED:   MAX_MIX_COUNT checked properly for mix strings in string table
-    - CHANGE:     DFU code re-written to use an XC interface. The flash-part may now be connected
+    - FIXED:   Reboot code (used for DFU) failure in tools versions > 14.0.2 (xCORE-200 only)
+    - FIXED:   Run-time exception in mixer when MAX_MIX_COUNT > 0 (xCORE-200 only)
+    - FIXED:   MAX_MIX_COUNT checked properly for mix strings in string table
+    - CHANGED:    DFU code re-written to use an XC interface. The flash-part may now be connected
                   to a separate tile to the tile running USB code
-    - CHANGE:     DFU code can now use quad-SPI flash
-    - CHANGE:     Example xmos_dfu application now uses a list of PIDs to allow adding PIDs easier.
+    - CHANGED:    DFU code can now use quad-SPI flash
+    - CHANGED:    Example xmos_dfu application now uses a list of PIDs to allow adding PIDs easier.
                   --listdevices command also added.
-    - CHANGE:     I2S_CHANS_PER_FRAME and I2S_WIRES_xxx defines tidied
+    - CHANGED:    I2S_CHANS_PER_FRAME and I2S_WIRES_xxx defines tidied
 
 6.12.1
 ------
-    - RESOLVED:   Fixes to TDM input timing/sample-alignment when BCLK=MCLK
-    - RESOLVED:   Various minor fixes to allow ADAT_RX to run on xCORE 200 MC AUDIO hardware
-    - CHANGE:     Moved from old SPDIF define to SPDIF_TX
+    - FIXED:   Fixes to TDM input timing/sample-alignment when BCLK=MCLK
+    - FIXED:   Various minor fixes to allow ADAT_RX to run on xCORE 200 MC AUDIO hardware
+    - CHANGED:    Moved from old SPDIF define to SPDIF_TX
 
 6.12.0
 ------
     - ADDED:      Checks for XUD_200_SERIES define where required
-    - RESOLVED:   Run-time exception due to decouple interrupt not entering correct issue mode
+    - FIXED:   Run-time exception due to decouple interrupt not entering correct issue mode
                   (affects XCORE-200 only)
-    - CHANGE:     SPDIF Tx Core may now reside on a different tile from I2S
-    - CHANGE:     I2C ports now in structure to match new module_i2c_singleport/shared API.
+    - CHANGED:    SPDIF Tx Core may now reside on a different tile from I2S
+    - CHANGED:    I2C ports now in structure to match new module_i2c_singleport/shared API.
 
   * Changes to dependencies:
 
@@ -390,48 +431,48 @@ Legacy release history
 
 6.11.3
 ------
-    - RESOLVED:  (Major) Streaming issue when mixer not enabled (introduced in 6.11.2)
+    - FIXED:  (Major) Streaming issue when mixer not enabled (introduced in 6.11.2)
 
 6.11.2
 ------
-    - RESOLVED:   (Major) Enumeration issue when MAX_MIX_COUNT > 0 only. Introduced in mixer
+    - FIXED:   (Major) Enumeration issue when MAX_MIX_COUNT > 0 only. Introduced in mixer
                   optimisations in 6.11.0. Only affects designs using mixer functionality.
-    - RESOLVED:   (Normal) Audio buffering request system modified such that the mixer output is
+    - FIXED:   (Normal) Audio buffering request system modified such that the mixer output is
                   not silent when in underflow case (i.e. host output stream not active) This issue was
                   introduced with the addition of DSD functionality and only affects designs using
                   mixer functionality.
-    - RESOLVED:   (Minor) Potential build issue due to duplicate labels in inline asm in
+    - FIXED:   (Minor) Potential build issue due to duplicate labels in inline asm in
                   set_interrupt_handler macro
-    - RESOLVED:   (Minor) BCD_DEVICE define in devicedefines.h now guarded by ifndef (caused issues
+    - FIXED:   (Minor) BCD_DEVICE define in devicedefines.h now guarded by ifndef (caused issues
                   with DFU test build configs.
-    - RESOLVED:   (Minor) String descriptor for Clock Selector unit incorrectly reported
-    - RESOLVED:   (Minor) BCD_DEVICE in devicedefines.h now guarded by #ifndef (Caused issues with
+    - FIXED:   (Minor) String descriptor for Clock Selector unit incorrectly reported
+    - FIXED:   (Minor) BCD_DEVICE in devicedefines.h now guarded by #ifndef (Caused issues with
                   default DFU test build configs.
-    - CHANGE:     HID report descriptor defines added to shared user_hid.h
-    - CHANGE:     Now uses module_adat_rx from sc_adat (local module_usb_audio_adat removed)
+    - CHANGED:    HID report descriptor defines added to shared user_hid.h
+    - CHANGED:    Now uses module_adat_rx from sc_adat (local module_usb_audio_adat removed)
 
 6.11.1
 ------
     - ADDED:      ADAT transmit functionality, including SMUX. See ADAT_TX and ADAT_TX_INDEX.
-    - RESOLVED:   (Normal) Build issue with CODEC_MASTER (xCore is I2S slave) enabled
-    - RESOLVED:   (Minor) Channel ordering issue in when TDM and CODEC_MASTER mode enabled
-    - RESOLVED:   (Normal) DFU fails when SPDIF_RX enabled due to clock block being shared between SPDIF
+    - FIXED:   (Normal) Build issue with CODEC_MASTER (xCore is I2S slave) enabled
+    - FIXED:   (Minor) Channel ordering issue in when TDM and CODEC_MASTER mode enabled
+    - FIXED:   (Normal) DFU fails when SPDIF_RX enabled due to clock block being shared between SPDIF
                   core and FlashLib
 
 6.11.0
 ------
     - ADDED:      Basic TDM I2S functionality added. See I2S_CHANS_PER_FRAME and I2S_MODE_TDM
-    - CHANGE:     Various optimisations in 'mixer' core to improve performance for higher
+    - CHANGED:    Various optimisations in 'mixer' core to improve performance for higher
                   channel counts including the use of XC unsafe pointers instead of inline ASM
-    - CHANGE:     Mixer mapping disabled when MAX_MIX_COUNT is 0 since this is wasted processing.
-    - CHANGE:     Descriptor changes to allow for channel input/output channel count up to 32
+    - CHANGED:    Mixer mapping disabled when MAX_MIX_COUNT is 0 since this is wasted processing.
+    - CHANGED:    Descriptor changes to allow for channel input/output channel count up to 32
                   (previous limit was 18)
 
 6.10.0
 ------
-    - CHANGE:     Endpoint management for iAP EA Native Transport now merged into buffer() core.
+    - CHANGED:    Endpoint management for iAP EA Native Transport now merged into buffer() core.
                   Previously was separate core (as added in 6.8.0).
-    - CHANGE:     Minor optimisation to I2S port code for inputs from ADC
+    - CHANGED:    Minor optimisation to I2S port code for inputs from ADC
 
 6.9.0
 -----
@@ -439,35 +480,35 @@ Legacy release history
                   supported (4 channels at 96kHz).
     - ADDED:      Explicit build warnings if sample rate/depth & channel combination exceeds
                   available USB bus bandwidth.
-    - RESOLVED:   (Major) Reinstated ADAT input functionality, including descriptors and clock
+    - FIXED:   (Major) Reinstated ADAT input functionality, including descriptors and clock
                   generation/control and stream configuration defines/tables.
-    - RESOLVED:   (Major) S/PDIF/ADAT sample transfer code in audio() (from ClockGen()) moved to
+    - FIXED:   (Major) S/PDIF/ADAT sample transfer code in audio() (from ClockGen()) moved to
                   aid timing.
-    - CHANGE:     Modifying mix map now only affects specified mix, previous was applied to all
+    - CHANGED:    Modifying mix map now only affects specified mix, previous was applied to all
                   mixes. CS_XU_MIXSEL control selector now takes values 0 to MAX_MIX_COUNT + 1
                   (with 0 affecting all mixes).
-    - CHANGE:     Channel c_dig_rx is no longer nullable, assists with timing due to removal of
+    - CHANGED:    Channel c_dig_rx is no longer nullable, assists with timing due to removal of
                   null checks inserted by compiler.
-    - CHANGE:     ADAT SMUX selection now based on device sample frequency rather than selected
+    - CHANGED:    ADAT SMUX selection now based on device sample frequency rather than selected
                   stream format - Endpoint 0 now configures clockgen() on a sample-rate change
                   rather than stream start.
 
 6.8.0
 -----
     - ADDED:      Evaluation support for iAP EA Native Transport endpoints
-    - RESOLVED:   (Minor) Reverted change in 6.5.1 release where sample rate listing in Audio Class
+    - FIXED:   (Minor) Reverted change in 6.5.1 release where sample rate listing in Audio Class
                   1.0 descriptors was trimmed (previously 4 rates were always reported). This change
                   appears to highlight a Windows (only) enumeration issue with the Input & Output
                   configs
-    - RESOLVED:   (Major) Mixer functionality re-instated, including descriptors and various required
+    - FIXED:   (Major) Mixer functionality re-instated, including descriptors and various required
                   updates compatibility with 13 tools
-    - RESOLVED:   (Major) Endpoint 0 was requesting an out of bounds channel whilst requesting level data
-    - RESOLVED:   (Major) Fast mix code not operates correctly in 13 tools, assembler inserting long jmp
+    - FIXED:   (Major) Endpoint 0 was requesting an out of bounds channel whilst requesting level data
+    - FIXED:   (Major) Fast mix code not operates correctly in 13 tools, assembler inserting long jmp
                   instructions
-    - RESOLVED:   (Minor) LED level meter code now compatible with 13 tools (shared mem access)
-    - RESOLVED    (Minor) Ordering of level data from the device now matches channel ordering into
+    - FIXED:   (Minor) LED level meter code now compatible with 13 tools (shared mem access)
+    - FIXED:    (Minor) Ordering of level data from the device now matches channel ordering into
                   mixer (previously the device input data and the stream from host were swapped)
-    - CHANGE:     Level meter buffer naming now resemble functionality
+    - CHANGED:    Level meter buffer naming now resemble functionality
 
 
 Legacy release history

Jenkinsfile

@@ -1,4 +1,4 @@
-@Library('xmos_jenkins_shared_library@v0.16.2') _
+@Library('xmos_jenkins_shared_library@v0.18.0') _
 
 getApproval()
 
@@ -14,7 +14,7 @@ pipeline {
   stages {
     stage('Basic tests') {
       agent {
-        label 'x86_64&&brew'
+        label 'x86_64 && linux'
       }
       stages {
         stage('Get view') {
@@ -113,7 +113,7 @@ pipeline {
       parallel {
         stage('Build Linux host app') {
           agent {
-            label 'x86_64&&brew&&linux'
+            label 'x86_64&&linux'
           }
           steps {
             xcorePrepareSandbox("${VIEW}", "${REPO}")
@@ -129,7 +129,7 @@ pipeline {
         }
         stage('Build Mac host app') {
           agent {
-            label 'x86_64&&brew&&macOS'
+            label 'x86_64&&macOS'
           }
           steps {
             xcorePrepareSandbox("${VIEW}", "${REPO}")
@@ -183,7 +183,7 @@ pipeline {
     }
     stage('Update') {
       agent {
-        label 'x86_64&&brew'
+        label 'x86_64 && linux'
       }
       steps {
         updateViewfiles()

README.rst

@@ -1,6 +1,10 @@
 lib_xua
 =======
 
+:Latest release: 3.2.0rc0
+
+:Scope: General Use
+
 Summary
 -------
 
@@ -33,6 +37,12 @@ Key features of the various applications in this repository are as follows
 
 - ADAT input
 
+- Synchronisation to external digital streams i.e. S/PDIF or ADAT
+
+- I2S slave & master modes
+
+- TDM slave & master modes
+
 - MIDI input/output (Compliant to USB Class Specification for MIDI devices)
 
 - DSD output (Native and DoP mode) at DSD64 and DSD128 rates
@@ -45,7 +55,6 @@ Key features of the various applications in this repository are as follows
 
 Note, not all features may be supported at all sample frequencies, simultaneously or on all devices.  Some features also require specific host driver support.
 
-
 Software version and dependencies
 .................................
 
@@ -60,3 +69,15 @@ The following application notes use this library:
     * AN000246 - Simple USB Audio Device using lib_xua
     * AN000247 - Using lib_xua with lib_spdif (transmit)
     * AN000248 - Using lib_xua with lib_mic_array
+
+Required software (dependencies)
+================================
+
+  * lib_logging (git@github.com:xmos/lib_logging.git)
+  * lib_xassert (git@github.com:xmos/lib_xassert.git)
+  * lib_xud (git@github.com:xmos/lib_xud.git)
+  * lib_spdif (git@github.com:xmos/lib_spdif.git)
+  * lib_mic_array (git@github.com:xmos/lib_mic_array.git)
+  * lib_dsp (git@github.com:xmos/lib_dsp)
+  * lib_locks (git@github.com:xmos/lib_locks.git)
+

doc/dfu/rst/xdoc.conf

@@ -0,0 +1,3 @@
+XMOSNEWSTYLE=2
+SOURCE_INCLUDE_DIRS=../../../lib_xua/host/xmosdfu
+SPHINX_MASTER_DOC=dfu

doc_dfu/.gitignore

@@ -1 +0,0 @@
-_build

doc_dfu/LICENSE.rst

@@ -1,84 +0,0 @@
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-
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-
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doc_dfu/Makefile

@@ -1 +0,0 @@
-SOURCE_INCLUDE_DIRS=../lib_xua/host/xmosdfu

examples/AN00246_xua_example/Makefile

@@ -5,10 +5,8 @@ TARGET = xk-audio-216-mc.xn
 # The flags passed to xcc when building the application
 XCC_FLAGS	= -fcomment-asm -Xmapper --map -Xmapper MAPFILE -O3 -report -save-temps \
 			  -g -Wno-unused-function -Wno-timing -DXUD_SERIES_SUPPORT=XUD_X200_SERIES \
-			  -DXUD_CORE_CLOCK=600 -DUSB_TILE=tile[1] -fxscope
+			  -DXUD_CORE_CLOCK=600 -DUSB_TILE=tile[1] -fxscope -DUAC_FORCE_FEEDBACK_EP=0
 			  
-#-DSDA_HIGH=2 -DSCL_HIGH=1 -fxscope
-
 # The USED_MODULES variable lists other module used by the application. These
 # modules will extend the SOURCE_DIRS, INCLUDE_DIRS and LIB_DIRS variables.
 # Modules are expected to be in the directory above the BASE_DIR directory.

examples/AN00246_xua_example/doc/rst/xdoc.conf

@@ -1,2 +1,3 @@
-XMOSNEWSTYLE=1
-SOURCE_INCLUDE_DIRS=../../src
+XMOSNEWSTYLE=2
+SOURCE_INCLUDE_DIRS=../../src
+SPHINX_MASTER_DOC=AN00246_xua_example

examples/AN00246_xua_example/src/app_xua_simple.xc

@@ -3,11 +3,11 @@
 
 /* A very simple *example* of a USB audio application (and as such is un-verified for production)
  *
- * It uses the main blocks from the lib_xua 
+ * It uses the main blocks from the lib_xua
  *
  * - 2 in/ 2 out I2S only
  * - No DFU
- * - I2S only 
+ * - I2S only
  *
  */
 
@@ -31,7 +31,7 @@ in port p_for_mclk_count            = PORT_MCLK_COUNT;   /* Extra port for count
 in port p_mclk_in_usb               = PORT_MCLK_IN_USB;  /* Extra master clock input for the USB tile */
 
 /* Clock-block declarations */
-clock clk_audio_bclk                = on tile[0]: XS1_CLKBLK_4;   /* Bit clock */    
+clock clk_audio_bclk                = on tile[0]: XS1_CLKBLK_4;   /* Bit clock */
 clock clk_audio_mclk                = on tile[0]: XS1_CLKBLK_5;   /* Master clock */
 clock clk_audio_mclk_usb            = on tile[1]: XS1_CLKBLK_1;   /* Master clock for USB tile */
 
@@ -51,17 +51,17 @@ int main()
 
     /* Channel for audio data between buffering cores and AudioHub/IO core */
     chan c_aud;
-    
+
     /* Channel for communicating control messages from EP0 to the rest of the device (via the buffering cores) */
     chan c_aud_ctl;
 
     par
     {
-        /* Low level USB device layer core */ 
+        /* Low level USB device layer core */
         on tile[1]: XUD_Main(c_ep_out, 2, c_ep_in, 2,
-                      c_sof, epTypeTableOut, epTypeTableIn, 
+                      c_sof, epTypeTableOut, epTypeTableIn,
                       XUD_SPEED_HS, XUD_PWR_SELF);
-        
+
         /* Endpoint 0 core from lib_xua */
         /* Note, since we are not using many features we pass in null for quite a few params.. */
         on tile[1]: XUA_Endpoint0(c_ep_out[0], c_ep_in[0], c_aud_ctl, null, null, null, null);
@@ -69,7 +69,7 @@ int main()
         /* Buffering cores - handles audio data to/from EP's and gives/gets data to/from the audio I/O core */
         /* Note, this spawns two cores */
         on tile[1]: {
-                        
+
                         /* Connect master-clock clock-block to clock-block pin */
                         set_clock_src(clk_audio_mclk_usb, p_mclk_in_usb);           /* Clock clock-block from mclk pin */
                         set_port_clock(p_for_mclk_count, clk_audio_mclk_usb);       /* Clock the "count" port from the clock block */
@@ -82,7 +82,7 @@ int main()
         /* AudioHub/IO core does most of the audio IO i.e. I2S (also serves as a hub for all audio) */
         on tile[0]: XUA_AudioHub(c_aud, clk_audio_mclk, clk_audio_bclk, p_mclk_in, p_lrclk, p_bclk, p_i2s_dac, p_i2s_adc);
     }
-    
+
     return 0;
 }
 

examples/AN00246_xua_example/src/hid_report_descriptor.h

@@ -127,7 +127,7 @@ static USB_HID_Report_Element_t* const hidConfigurableElements[] = {
 };
 
 /*
- * List HID Reports, one per Report ID. This should be a usage page item with the relevant 
+ * List HID Reports, one per Report ID. This should be a usage page item with the relevant
  * If not using report IDs - still have one with report ID 0
  */
 static const USB_HID_Report_Element_t* const hidReports[] = {

examples/AN00246_xua_example/src/hwsupport.xc

@@ -50,7 +50,7 @@ void AudioHwConfig2(unsigned samFreq, unsigned mClk, unsigned dsdMode, unsigned
     delay_microseconds(20000);
 
 	/* Take ADC out of reset */
-	gpioVal |= P_GPIO_ADC_RST_N;        
+	gpioVal |= P_GPIO_ADC_RST_N;
 	p_gpio <: gpioVal;
 
 	/* Configure ADC for I2S slave mode via I2C */
@@ -58,7 +58,7 @@ void AudioHwConfig2(unsigned samFreq, unsigned mClk, unsigned dsdMode, unsigned
 	dif = 0x01;   	/* I2S */
 	mode = 0x03;    /* Slave mode all speeds */
 
-	/* Reg 0x01: (GCTL) Global Mode Control Register 
+	/* Reg 0x01: (GCTL) Global Mode Control Register
 	* Bit[7]: CP-EN: Manages control-port mode
 	* Bit[6]: CLKMODE: Setting puts part in 384x mode
 	* Bit[5:4]: MDIV[1:0]: Set to 01 for /2
@@ -91,7 +91,7 @@ void AudioHwConfig2(unsigned samFreq, unsigned mClk, unsigned dsdMode, unsigned
 	 * bit[0] : Power Down (PDN)               : Powered down
 	 */
 	DAC_REGWRITE(CS4384_MODE_CTRL, 0b11000001);
-	
+
     /* PCM Control (Address: 0x03) */
 	/* bit[7:4] : Digital Interface Format (DIF) : 0b0001 for I2S up to 24bit
 	 * bit[3:2] : Reserved

examples/AN00246_xua_example/src/xua_conf.h

@@ -1,7 +1,7 @@
 // Copyright 2017-2021 XMOS LIMITED.
 // This Software is subject to the terms of the XMOS Public Licence: Version 1.
 
-#ifndef _XUA_CONF_H_ 
+#ifndef _XUA_CONF_H_
 #define _XUA_CONF_H_
 
 #define NUM_USB_CHAN_OUT      2     /* Number of channels from host to device */
@@ -19,7 +19,7 @@
 #define VENDOR_ID       0x20B1
 #define PRODUCT_STR_A2  "XUA Example"
 #define PRODUCT_STR_A1  "XUA Example"
-#define PID_AUDIO_1     1   
+#define PID_AUDIO_1     1
 #define PID_AUDIO_2     2
 #define XUA_DFU_EN      0           /* Disable DFU (for simplicity of example */
 #define MIC_DUAL_ENABLED 0          // Use multi-threaded design

examples/AN00247_xua_example_spdif_tx/Makefile

@@ -5,7 +5,8 @@ TARGET = xk-audio-216-mc.xn
 # The flags passed to xcc when building the application
 XCC_FLAGS	= -fcomment-asm -Xmapper --map -Xmapper MAPFILE -O3 -report -save-temps \
 			  -g -Wno-unused-function -Wno-timing -DXUD_SERIES_SUPPORT=XUD_X200_SERIES \
-			  -DXUD_CORE_CLOCK=600 -DUSB_TILE=tile[1] -DSDA_HIGH=2 -DSCL_HIGH=1 -fxscope
+			  -DXUD_CORE_CLOCK=600 -DUSB_TILE=tile[1] -DSDA_HIGH=2 -DSCL_HIGH=1 -fxscope \
+			  -DUAC_FORCE_FEEDBACK_EP=0
 
 # The USED_MODULES variable lists other module used by the application. These
 # modules will extend the SOURCE_DIRS, INCLUDE_DIRS and LIB_DIRS variables.

examples/AN00247_xua_example_spdif_tx/doc/rst/xdoc.conf

@@ -1,2 +1,3 @@
-XMOSNEWSTYLE=1
-SOURCE_INCLUDE_DIRS=../../src
+XMOSNEWSTYLE=2
+SOURCE_INCLUDE_DIRS=../../src
+SPHINX_MASTER_DOC=AN00247_xua_example_spdif_tx

examples/AN00247_xua_example_spdif_tx/src/app_xua_simple.xc

@@ -3,7 +3,7 @@
 
 /* A very simple *example* of a USB audio application (and as such is un-verified for production)
  *
- * It uses the main blocks from the lib_xua 
+ * It uses the main blocks from the lib_xua
  *
  * - S/PDIF output only
  * - No DFU
@@ -51,7 +51,7 @@ int main()
 
     /* Channel for audio data between buffering cores and AudioHub/IO core */
     chan c_aud;
-    
+
     /* Channel for communicating control messages from EP0 to the rest of the device (via the buffering cores) */
     chan c_aud_ctl;
 
@@ -60,9 +60,9 @@ int main()
 
     par
     {
-        /* Low level USB device layer core */ 
+        /* Low level USB device layer core */
         on tile[1]: XUD_Main(c_ep_out, 2, c_ep_in, 2, c_sof, epTypeTableOut, epTypeTableIn, XUD_SPEED_HS, XUD_PWR_SELF);
-        
+
         /* Endpoint 0 core from lib_xua */
         /* Note, since we are not using many features we pass in null for quite a few params.. */
         on tile[1]: XUA_Endpoint0(c_ep_out[0], c_ep_in[0], c_aud_ctl, null, null, null, null);
@@ -70,7 +70,7 @@ int main()
         /* Buffering cores - handles audio data to/from EP's and gives/gets data to/from the audio I/O core */
         /* Note, this spawns two cores */
         on tile[1]: {
-                        
+
                         /* Connect master-clock clock-block to clock-block pin */
                         set_clock_src(clk_audio_mclk_usb, p_mclk_in_usb);           /* Clock clock-block from mclk pin */
                         set_port_clock(p_for_mclk_count, clk_audio_mclk_usb);       /* Clock the "count" port from the clock block */
@@ -78,28 +78,28 @@ int main()
 
                         XUA_Buffer(c_ep_out[1], c_ep_in[1], c_sof, c_aud_ctl, p_for_mclk_count, c_aud);
                     }
-        
+
         /* AudioHub() (I2S) and S/SPDIF Tx are on the same tile */
         on tile[0]: {
 
                         /* Setup S/PDIF tx port from clock etc - note we do this before par to avoid parallel usage */
                         spdif_tx_port_config(p_spdif_tx, clk_spdif_tx, p_mclk_in, 7);
-        
+
                         par
                         {
                             while(1)
                             {
                                 /* Run the S/PDIF transmitter task */
-                                spdif_tx(p_spdif_tx, c_spdif_tx);   
+                                spdif_tx(p_spdif_tx, c_spdif_tx);
                             }
-                        
+
                             /* AudioHub/IO core does most of the audio IO i.e. I2S (also serves as a hub for all audio) */
                             /* Note, since we are not using I2S we pass in null for LR and Bit clock ports and the I2S dataline ports */
                             XUA_AudioHub(c_aud, clk_audio_mclk, null, p_mclk_in, null, null, null, null, c_spdif_tx);
                         }
                     }
     }
-    
+
     return 0;
 }
 

examples/AN00247_xua_example_spdif_tx/src/hid_report_descriptor.h

@@ -127,7 +127,7 @@ static USB_HID_Report_Element_t* const hidConfigurableElements[] = {
 };
 
 /*
- * List HID Reports, one per Report ID. This should be a usage page item with the relevant 
+ * List HID Reports, one per Report ID. This should be a usage page item with the relevant
  * If not using report IDs - still have one with report ID 0
  */
 static const USB_HID_Report_Element_t* const hidReports[] = {

examples/AN00247_xua_example_spdif_tx/src/xua_conf.h

@@ -1,7 +1,7 @@
 // Copyright 2017-2021 XMOS LIMITED.
 // This Software is subject to the terms of the XMOS Public Licence: Version 1.
 
-#ifndef _XUA_CONF_H_ 
+#ifndef _XUA_CONF_H_
 #define _XUA_CONF_H_
 
 #define NUM_USB_CHAN_OUT 2

examples/AN00248_xua_example_pdm_mics/Makefile

@@ -5,7 +5,8 @@ TARGET = mic_array_ref.xn
 # The flags passed to xcc when building the application
 XCC_FLAGS	= -fcomment-asm -Xmapper --map -Xmapper MAPFILE -O3 -report -save-temps \
 			  -g -Wno-unused-function -Wno-timing -DXUD_SERIES_SUPPORT=XUD_X200_SERIES \
-			  -DXUD_CORE_CLOCK=600 -DUSB_TILE=tile[1] -DSDA_HIGH=2 -DSCL_HIGH=1 -fxscope
+			  -DXUD_CORE_CLOCK=600 -DUSB_TILE=tile[1] -DSDA_HIGH=2 -DSCL_HIGH=1 -fxscope \
+			  -DUAC_FORCE_FEEDBACK_EP=0
 
 # The USED_MODULES variable lists other module used by the application. These
 # modules will extend the SOURCE_DIRS, INCLUDE_DIRS and LIB_DIRS variables.

examples/AN00248_xua_example_pdm_mics/doc/rst/xdoc.conf

@@ -1,2 +1,3 @@
-XMOSNEWSTYLE=1
-SOURCE_INCLUDE_DIRS=../../src
+XMOSNEWSTYLE=2
+SOURCE_INCLUDE_DIRS=../../src
+SPHINX_MASTER_DOC=AN00248_xua_example_pdm_mics

examples/AN00248_xua_example_pdm_mics/src/app_xua_simple.xc

@@ -3,7 +3,7 @@
 
 /* A very simple *example* of a USB audio application (and as such is un-verified for production)
  *
- * It uses the main blocks from the lib_xua with the addition of PDM mic support using lib_mic_array 
+ * It uses the main blocks from the lib_xua with the addition of PDM mic support using lib_mic_array
  *
  * - No DFU
  *
@@ -24,7 +24,7 @@ in port p_pdm_mclk               = PORT_PDM_MCLK;              /* Master clock f
 
 in buffered port:32 p_pdm_mics   = PORT_PDM_DATA;              /* Port for PDM mic data */
 
-clock clk_pdm                    = on tile[0]: XS1_CLKBLK_1;   /* Clock-block for PDM mics */  
+clock clk_pdm                    = on tile[0]: XS1_CLKBLK_1;   /* Clock-block for PDM mics */
 
 
 /* Lib_xua port declarations. Note, the defines come from the xn file */
@@ -52,7 +52,7 @@ int main()
 
     /* Channel for audio data between buffering cores and AudioHub/IO core */
     chan c_aud;
-    
+
     /* Channel for communicating control messages from EP0 to the rest of the device (via the buffering cores) */
     chan c_aud_ctl;
 
@@ -64,26 +64,26 @@ int main()
 
     par
     {
-        /* Low level USB device layer core */ 
+        /* Low level USB device layer core */
         on tile[1]: XUD_Main(c_ep_out, 2, c_ep_in, 2, c_sof, epTypeTableOut, epTypeTableIn, XUD_SPEED_HS, XUD_PWR_BUS);
-        
+
         /* Endpoint 0 core from lib_xua */
         /* Note, since we are not using many features we pass in null for quite a few params.. */
         on tile[1]: XUA_Endpoint0(c_ep_out[0], c_ep_in[0], c_aud_ctl, null, null, null, null);
 
-        on tile[1]: 
+        on tile[1]:
         {
             /* Connect master-clock clock-block to clock-block pin */
             set_clock_src(clk_audio_mclk, p_mclk_in);             /* Clock clock-block from mclk pin */
             set_port_clock(p_for_mclk_count, clk_audio_mclk);     /* Clock the "count" port from the clock block */
                                                                   /* Note, AudioHub() will start the clock */
-          
+
            par
            {
                 /* Buffering task - handles audio data to/from EP's and gives/gets data to/from the audio I/O core */
                 /* Note, this spawns two cores */
                 XUA_Buffer(c_ep_out[1], c_ep_in[1], c_sof, c_aud_ctl, p_for_mclk_count, c_aud);
-                    
+
                 /* AudioHub/IO core does most of the audio IO i.e. I2S (also serves as a hub for all audio) */
                 /* Note, since we are not using I2S we pass in null for LR and Bit clock ports and the I2S dataline ports */
                 XUA_AudioHub(c_aud, clk_audio_mclk, null, p_mclk_in, null, null, null, null, c_mic_pcm);
@@ -105,7 +105,7 @@ int main()
             {
                 /* PDM receive I/O task */
                 mic_array_pdm_rx(p_pdm_mics, c_4x_pdm_mic_0, c_4x_pdm_mic_1);
-                
+
                 /* Run two decimator tasks for 8 mics */
                 mic_array_decimate_to_pcm_4ch(c_4x_pdm_mic_0, c_ds_output[0], MIC_ARRAY_NO_INTERNAL_CHANS);
                 mic_array_decimate_to_pcm_4ch(c_4x_pdm_mic_1, c_ds_output[1], MIC_ARRAY_NO_INTERNAL_CHANS);
@@ -114,7 +114,7 @@ int main()
             }
         }
     }
-    
+
     return 0;
 }
 

examples/AN00248_xua_example_pdm_mics/src/audiohw.xc

@@ -16,7 +16,7 @@ void AudioHwInit()
     /* DAC in reset */
     p_gpio <: 0;
 
-    return;    
+    return;
 }
 
 /* Configures the external audio hardware for the required sample frequency */

examples/AN00248_xua_example_pdm_mics/src/hid_report_descriptor.h

@@ -127,7 +127,7 @@ static USB_HID_Report_Element_t* const hidConfigurableElements[] = {
 };
 
 /*
- * List HID Reports, one per Report ID. This should be a usage page item with the relevant 
+ * List HID Reports, one per Report ID. This should be a usage page item with the relevant
  * If not using report IDs - still have one with report ID 0
  */
 static const USB_HID_Report_Element_t* const hidReports[] = {

examples/AN00248_xua_example_pdm_mics/src/xua_conf.h

@@ -1,7 +1,7 @@
 // Copyright 2017-2021 XMOS LIMITED.
 // This Software is subject to the terms of the XMOS Public Licence: Version 1.
 
-#ifndef _XUA_CONF_H_ 
+#ifndef _XUA_CONF_H_
 #define _XUA_CONF_H_
 
 #define NUM_USB_CHAN_OUT 0

legacy_tests/app_test_i2s_loopback/Makefile

@@ -1,7 +1,5 @@
-# Copyright (c) 2016, XMOS Ltd, All rights reserved
 TARGET = xk-audio-216-mc.xn
-USED_MODULES = lib_xua \
-               module_i2c_shared module_i2c_single_port lib_logging 
+USED_MODULES = lib_xua lib_i2c lib_logging
 
 BUILD_FLAGS = -O0 -g -lflash -DXUD_SERIES_SUPPORT=4 -DXUD_CORE_CLOCK=600 -fxscope -save-temps -march=xs2a -DUSB_TILE=tile[1]
 

legacy_tests/app_test_i2s_loopback/hid_report_descriptor.h

@@ -82,35 +82,35 @@ static const USB_HID_Report_Element_t hidReportPageConsumer     = {
 /*
  * Define configurable items in the HID Report descriptor.
  */
-static USB_HID_Report_Element_t hidUsageByte0Bit5   = { 
-    .item.header = HID_REPORT_SET_HEADER(1, HID_REPORT_ITEM_TYPE_LOCAL, HID_REPORT_ITEM_TAG_USAGE), 
-    .item.data = { 0xE2, 0x00 }, 
-    .location = HID_REPORT_SET_LOC( 0, 0, 0, 5 ) 
+static USB_HID_Report_Element_t hidUsageByte0Bit5   = {
+    .item.header = HID_REPORT_SET_HEADER(1, HID_REPORT_ITEM_TYPE_LOCAL, HID_REPORT_ITEM_TAG_USAGE),
+    .item.data = { 0xE2, 0x00 },
+    .location = HID_REPORT_SET_LOC( 0, 0, 0, 5 )
 }; // Mute
-static USB_HID_Report_Element_t hidUsageByte0Bit4   = { 
-    .item.header = HID_REPORT_SET_HEADER(1, HID_REPORT_ITEM_TYPE_LOCAL, HID_REPORT_ITEM_TAG_USAGE), 
-    .item.data = { 0xEA, 0x00 }, 
-    .location = HID_REPORT_SET_LOC( 0, 0, 0, 4 ) 
+static USB_HID_Report_Element_t hidUsageByte0Bit4   = {
+    .item.header = HID_REPORT_SET_HEADER(1, HID_REPORT_ITEM_TYPE_LOCAL, HID_REPORT_ITEM_TAG_USAGE),
+    .item.data = { 0xEA, 0x00 },
+    .location = HID_REPORT_SET_LOC( 0, 0, 0, 4 )
 }; // Vol-
-static USB_HID_Report_Element_t hidUsageByte0Bit3   = { 
-    .item.header = HID_REPORT_SET_HEADER(1, HID_REPORT_ITEM_TYPE_LOCAL, HID_REPORT_ITEM_TAG_USAGE), 
-    .item.data = { 0xE9, 0x00 }, 
-    .location = HID_REPORT_SET_LOC( 0, 0, 0, 3 ) 
+static USB_HID_Report_Element_t hidUsageByte0Bit3   = {
+    .item.header = HID_REPORT_SET_HEADER(1, HID_REPORT_ITEM_TYPE_LOCAL, HID_REPORT_ITEM_TAG_USAGE),
+    .item.data = { 0xE9, 0x00 },
+    .location = HID_REPORT_SET_LOC( 0, 0, 0, 3 )
 }; // Vol+
-static USB_HID_Report_Element_t hidUsageByte0Bit2   = { 
-    .item.header = HID_REPORT_SET_HEADER(1, HID_REPORT_ITEM_TYPE_LOCAL, HID_REPORT_ITEM_TAG_USAGE), 
-    .item.data = { 0xB6, 0x00 }, 
-    .location = HID_REPORT_SET_LOC( 0, 0, 0, 2 ) 
+static USB_HID_Report_Element_t hidUsageByte0Bit2   = {
+    .item.header = HID_REPORT_SET_HEADER(1, HID_REPORT_ITEM_TYPE_LOCAL, HID_REPORT_ITEM_TAG_USAGE),
+    .item.data = { 0xB6, 0x00 },
+    .location = HID_REPORT_SET_LOC( 0, 0, 0, 2 )
 }; // Scan Prev
-static USB_HID_Report_Element_t hidUsageByte0Bit1   = { 
-    .item.header = HID_REPORT_SET_HEADER(1, HID_REPORT_ITEM_TYPE_LOCAL, HID_REPORT_ITEM_TAG_USAGE), 
-    .item.data = { 0xB5, 0x00 }, 
-    .location = HID_REPORT_SET_LOC( 0, 0, 0, 1 ) 
+static USB_HID_Report_Element_t hidUsageByte0Bit1   = {
+    .item.header = HID_REPORT_SET_HEADER(1, HID_REPORT_ITEM_TYPE_LOCAL, HID_REPORT_ITEM_TAG_USAGE),
+    .item.data = { 0xB5, 0x00 },
+    .location = HID_REPORT_SET_LOC( 0, 0, 0, 1 )
 }; // Scan Next
-static USB_HID_Report_Element_t hidUsageByte0Bit0   = { 
-    .item.header = HID_REPORT_SET_HEADER(1, HID_REPORT_ITEM_TYPE_LOCAL, HID_REPORT_ITEM_TAG_USAGE), 
-    .item.data = { 0xB0, 0x00 }, 
-    .location = HID_REPORT_SET_LOC( 0, 0, 0, 0 ) 
+static USB_HID_Report_Element_t hidUsageByte0Bit0   = {
+    .item.header = HID_REPORT_SET_HEADER(1, HID_REPORT_ITEM_TYPE_LOCAL, HID_REPORT_ITEM_TAG_USAGE),
+    .item.data = { 0xB0, 0x00 },
+    .location = HID_REPORT_SET_LOC( 0, 0, 0, 0 )
 }; // Play
 
 /*
@@ -126,7 +126,7 @@ static USB_HID_Report_Element_t* const hidConfigurableElements[] = {
 };
 
 /*
- * List HID Reports, one per Report ID. This should be a usage page item with the relevant 
+ * List HID Reports, one per Report ID. This should be a usage page item with the relevant
  * If not using report IDs - still have one with report ID 0
  */
 static const USB_HID_Report_Element_t* const hidReports[] = {

legacy_tests/app_test_i2s_loopback/main.xc

@@ -81,7 +81,7 @@ buffered out port:32 p_bclk        = PORT_I2S_BCLK;     /* I2S L/R-clock */
 in port p_mclk_in                   = PORT_MCLK_IN;
 
 /* Clock-block declarations */
-clock clk_audio_bclk                = on tile[AUDIO_IO_TILE]: XS1_CLKBLK_1;   /* Bit clock */    
+clock clk_audio_bclk                = on tile[AUDIO_IO_TILE]: XS1_CLKBLK_1;   /* Bit clock */
 clock clk_audio_mclk                = on tile[AUDIO_IO_TILE]: XS1_CLKBLK_2;   /* Master clock */
 
 #ifdef SIMULATION
@@ -189,14 +189,14 @@ void checker(chanend c_checker, int disable)
 
 #ifdef SIMULATION
 
-out port p_mclk_gen       = on tile[AUDIO_IO_TILE] :  XS1_PORT_1A; 
+out port p_mclk_gen       = on tile[AUDIO_IO_TILE] :  XS1_PORT_1A;
 clock clk_audio_mclk_gen  = on tile[AUDIO_IO_TILE] : XS1_CLKBLK_3;
 void master_mode_clk_setup(void);
 
 #if CODEC_MASTER
-out port  p_bclk_gen      = on tile[AUDIO_IO_TILE] : XS1_PORT_1B;  
+out port  p_bclk_gen      = on tile[AUDIO_IO_TILE] : XS1_PORT_1B;
 clock clk_audio_bclk_gen  = on tile[AUDIO_IO_TILE] : XS1_CLKBLK_4;
-out port  p_lrclk_gen     = on tile[AUDIO_IO_TILE] : XS1_PORT_1C; 
+out port  p_lrclk_gen     = on tile[AUDIO_IO_TILE] : XS1_PORT_1C;
 clock clk_audio_lrclk_gen = on tile[AUDIO_IO_TILE] : XS1_CLKBLK_5;
 void slave_mode_clk_setup(const unsigned samFreq, const unsigned chans_per_frame);
 #endif
@@ -214,11 +214,11 @@ int main(void)
     chan c_checker;
     chan c_out;
 
-    par 
+    par
     {
-        on tile[AUDIO_IO_TILE]: 
-        { 
-            par 
+        on tile[AUDIO_IO_TILE]:
+        {
+            par
             {
                 XUA_AudioHub(c_out, clk_audio_mclk, clk_audio_bclk, p_mclk_in, p_lrclk, p_bclk, p_i2s_dac, p_i2s_adc);
                 generator(c_checker, c_out);

legacy_tests/app_test_i2s_loopback/simulation.xc

@@ -22,7 +22,7 @@ void AudioHwInit()
 
 
 extern clock clk_audio_mclk_gen;
-extern out port p_mclk_gen; 
+extern out port p_mclk_gen;
 void master_mode_clk_setup(void)
 {
   configure_clock_rate(clk_audio_mclk_gen, 25, 1); // Slighly faster than typical MCLK of 24.576MHz
@@ -35,17 +35,17 @@ void master_mode_clk_setup(void)
 
 
 #if CODEC_MASTER
-extern out port  p_bclk_gen;  
+extern out port  p_bclk_gen;
 extern clock clk_audio_bclk_gen;
-extern out port  p_lrclk_gen; 
+extern out port  p_lrclk_gen;
 extern clock clk_audio_lrclk_gen;
 
 void slave_mode_clk_setup(const unsigned samFreq, const unsigned chans_per_frame){
   const unsigned data_bits = 32;
   const unsigned mclk_freq = 24576000;
 
-  const unsigned mclk_bclk_ratio = mclk_freq / (chans_per_frame * samFreq * data_bits); 
-  const unsigned bclk_lrclk_ratio = (chans_per_frame * data_bits); // 48.828Hz  LRCLK 
+  const unsigned mclk_bclk_ratio = mclk_freq / (chans_per_frame * samFreq * data_bits);
+  const unsigned bclk_lrclk_ratio = (chans_per_frame * data_bits); // 48.828Hz  LRCLK
 
   //bclk
   configure_clock_src_divide(clk_audio_bclk_gen, p_mclk_gen, mclk_bclk_ratio/2);

legacy_tests/app_test_i2s_loopback/xk_216_mc/audiohw.xc

@@ -1,4 +1,4 @@
-// Copyright 2016-2021 XMOS LIMITED.
+// Copyright 2016-2022 XMOS LIMITED.
 // This Software is subject to the terms of the XMOS Public Licence: Version 1.
 #ifdef HARDWARE
 
@@ -8,7 +8,7 @@
 #include "devicedefines.h"
 #include <platform.h>
 #include "gpio_access.h"
-#include "i2c_shared.h"
+#include "i2c.h"
 #include "cs4384.h"
 #include "cs5368.h"
 #include "cs2100.h"
@@ -25,16 +25,10 @@
 
 on tile[0] : out port p_gpio = XS1_PORT_8C;
 
-#ifndef IAP
-/* If IAP not enabled, i2c ports not declared - still needs for DAC config */
-on tile [0] : struct r_i2c r_i2c = {XS1_PORT_4A};
-#else
-extern struct r_i2c r_i2c;
-#endif
+port p_i2c = on tile[0]:PORT_I2C;
 
-#define DAC_REGWRITE(reg, val) {data[0] = val; i2c_shared_master_write_reg(r_i2c, CS4384_I2C_ADDR, reg, data, 1);}
-#define DAC_REGREAD(reg, val)  {i2c_shared_master_read_reg(r_i2c, CS4384_I2C_ADDR, reg, val, 1);}
-#define ADC_REGWRITE(reg, val) {data[0] = val; i2c_shared_master_write_reg(r_i2c, CS5368_I2C_ADDR, reg, data, 1);}
+#define DAC_REGWRITE(reg, val) {result = i2c.write_reg(CS4384_I2C_ADDR, reg, val);}
+#define ADC_REGWRITE(reg, val) {result = i2c.write_reg(CS5368_I2C_ADDR, reg, val);}
 
 #ifdef USE_FRACTIONAL_N
 
@@ -45,14 +39,15 @@ extern struct r_i2c r_i2c;
 #define PLL_SYNC_FREQ 300
 #endif
 
-#define CS2100_REGREAD(reg, data)  {data[0] = 0xAA; i2c_master_read_reg(CS2100_I2C_DEVICE_ADDR, reg, data, 1, r_i2c);}
-#define CS2100_REGREAD_ASSERT(reg, data, expected)  {data[0] = 0xAA; i2c_master_read_reg(CS2100_I2C_DEVICE_ADDR, reg, data, 1, r_i2c); assert(data[0] == expected);}
-#define CS2100_REGWRITE(reg, val) {data[0] = val; i2c_master_write_reg(CS2100_I2C_DEVICE_ADDR, reg, data, 1, r_i2c);}
+#define CS2100_REGREAD(reg, data) {data[0] = i2c.read_reg(CS2100_I2C_DEVICE_ADDR, reg, result);}
+#define CS2100_REGREAD_ASSERT(reg, data, expected) {data[0] = i2c.read_reg(CS2100_I2C_DEVICE_ADDR, reg, result); assert(data[0] == expected);}
+#define CS2100_REGWRITE(reg, val) {result = i2c.write_reg(CS2100_I2C_DEVICE_ADDR, reg, val);}
 
 /* Init of CS2100 */
-void PllInit(void)
+void PllInit(client interface i2c_master_if i2c)
 {
     unsigned char data[1] = {0};
+    i2c_regop_res_t result;
 
 #if XCORE_200_MC_AUDIO_HW_VERSION < 2
     /* Enable init */
@@ -73,12 +68,15 @@ void PllInit(void)
     CS2100_REGREAD_ASSERT(CS2100_GLOBAL_CONFIG, data, 0x01);
     CS2100_REGREAD_ASSERT(CS2100_FUNC_CONFIG_1, data, 0x08);
     CS2100_REGREAD_ASSERT(CS2100_FUNC_CONFIG_2, data, 0x00);
+
+    i2c.shutdown();
 }
 
 /* Setup PLL multiplier */
-void PllMult(unsigned output, unsigned ref)
+void PllMult(unsigned output, unsigned ref, client interface i2c_master_if i2c)
 {
     unsigned char data[1] = {0};
+    i2c_regop_res_t result;
 
     /* PLL expects 12:20 format, convert output and ref to 12:20 */
     /* Shift up the dividend by 12 to retain format... */
@@ -120,9 +118,6 @@ void AudioHwInit(chanend ?c_codec)
     start_clock(clk_pll_sync);
 #endif
 
-    /* Init the i2c module */
-    i2c_shared_master_init(r_i2c);
-
     /* Assert reset to ADC and DAC */
     set_gpio(P_GPIO_DAC_RST_N, 0);
     set_gpio(P_GPIO_ADC_RST_N, 0);
@@ -143,7 +138,12 @@ void AudioHwInit(chanend ?c_codec)
     set_gpio(P_GPIO_PLL_SEL, 1);
 
      /* Initialise external PLL */
-    PllInit();
+    i2c_master_if i2c[1];
+    par
+    {
+        i2c_master_single_port(i2c, 1, p_i2c, 10, 0, 1, 0);
+        PllInit(i2c[0]);
+    }
 #endif
 
 #ifdef IAP
@@ -155,10 +155,11 @@ void AudioHwInit(chanend ?c_codec)
 /* Configures the external audio hardware for the required sample frequency.
  * See gpio.h for I2C helper functions and gpio access
  */
-void AudioHwConfig(unsigned samFreq, unsigned mClk, chanend ?c_codec, unsigned dsdMode,
-    unsigned sampRes_DAC, unsigned sampRes_ADC)
+void AudioHwConfig2(unsigned samFreq, unsigned mClk, chanend ?c_codec, unsigned dsdMode,
+    unsigned sampRes_DAC, unsigned sampRes_ADC, client interface i2c_master_if i2c)
 {
-	unsigned char data[1] = {0};
+    unsigned char data[1] = {0};
+    i2c_regop_res_t result;
 
     /* Put ADC and DAC into reset */
 	set_gpio(P_GPIO_ADC_RST_N, 0);
@@ -167,7 +168,7 @@ void AudioHwConfig(unsigned samFreq, unsigned mClk, chanend ?c_codec, unsigned d
     /* Set master clock select appropriately */
 #if defined(USE_FRACTIONAL_N)
     /* Configure external fractional-n clock multiplier for 300Hz -> mClkFreq */
-    PllMult(mClk, PLL_SYNC_FREQ);
+    PllMult(mClk, PLL_SYNC_FREQ, i2c);
 #endif
     /* Allow some time for mclk to lock and MCLK to stabilise - this is important to avoid glitches at start of stream */
     {
@@ -365,8 +366,20 @@ void AudioHwConfig(unsigned samFreq, unsigned mClk, chanend ?c_codec, unsigned d
         DAC_REGWRITE(CS4384_MODE_CTRL, 0b10000000);
     }
 #endif
+
+    i2c.shutdown();
     return;
 }
-//:
+
+void AudioHwConfig(unsigned samFreq, unsigned mClk, chanend ?c_codec, unsigned dsdMode,
+    unsigned sampRes_DAC, unsigned sampRes_ADC)
+{
+    i2c_master_if i2c[1];
+    par
+    {
+        i2c_master_single_port(i2c, 1, p_i2c, 10, 0, 1, 0);
+        AudioHwConfig2(samFreq, mClk, c_codec, dsdMode, sampRes_DAC, sampRes_ADC, i2c[0]);
+    }
+}
 
 #endif

lib_xua/.cproject

@@ -1,860 +0,0 @@
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-					<extension id="com.xmos.cdt.core.XEBinaryParser" point="org.eclipse.cdt.core.BinaryParser"/>
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-									<listOptionValue builtIn="false" value="__UINT_FAST16_FMTx__=&quot;hx&quot;"/>
-									<listOptionValue builtIn="false" value="__UINT_FAST16_FMTX__=&quot;hX&quot;"/>
-									<listOptionValue builtIn="false" value="__INT_FAST32_TYPE__=int"/>
-									<listOptionValue builtIn="false" value="__INT_FAST32_MAX__=2147483647"/>
-									<listOptionValue builtIn="false" value="__INT_FAST32_FMTd__=&quot;d&quot;"/>
-									<listOptionValue builtIn="false" value="__INT_FAST32_FMTi__=&quot;i&quot;"/>
-									<listOptionValue builtIn="false" value="__UINT_FAST32_TYPE__=unsigned"/>
-									<listOptionValue builtIn="false" value="__UINT_FAST32_MAX__=4294967295U"/>
-									<listOptionValue builtIn="false" value="__UINT_FAST32_FMTo__=&quot;o&quot;"/>
-									<listOptionValue builtIn="false" value="__UINT_FAST32_FMTu__=&quot;u&quot;"/>
-									<listOptionValue builtIn="false" value="__UINT_FAST32_FMTx__=&quot;x&quot;"/>
-									<listOptionValue builtIn="false" value="__UINT_FAST32_FMTX__=&quot;X&quot;"/>
-									<listOptionValue builtIn="false" value="__INT_FAST64_TYPE__=long"/>
-									<listOptionValue builtIn="false" value="__INT_FAST64_MAX__=9223372036854775807LL"/>
-									<listOptionValue builtIn="false" value="__INT_FAST64_FMTd__=&quot;lld&quot;"/>
-									<listOptionValue builtIn="false" value="__INT_FAST64_FMTi__=&quot;lli&quot;"/>
-									<listOptionValue builtIn="false" value="__UINT_FAST64_TYPE__=long"/>
-									<listOptionValue builtIn="false" value="__UINT_FAST64_MAX__=18446744073709551615ULL"/>
-									<listOptionValue builtIn="false" value="__UINT_FAST64_FMTo__=&quot;llo&quot;"/>
-									<listOptionValue builtIn="false" value="__UINT_FAST64_FMTu__=&quot;llu&quot;"/>
-									<listOptionValue builtIn="false" value="__UINT_FAST64_FMTx__=&quot;llx&quot;"/>
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-									<listOptionValue builtIn="false" value="__GNUC_GNU_INLINE__=1"/>
-									<listOptionValue builtIn="false" value="__GCC_ATOMIC_TEST_AND_SET_TRUEVAL=1"/>
-									<listOptionValue builtIn="false" value="__GCC_ATOMIC_BOOL_LOCK_FREE=1"/>
-									<listOptionValue builtIn="false" value="__GCC_ATOMIC_CHAR_LOCK_FREE=1"/>
-									<listOptionValue builtIn="false" value="__GCC_ATOMIC_CHAR16_T_LOCK_FREE=1"/>
-									<listOptionValue builtIn="false" value="__GCC_ATOMIC_CHAR32_T_LOCK_FREE=1"/>
-									<listOptionValue builtIn="false" value="__GCC_ATOMIC_WCHAR_T_LOCK_FREE=1"/>
-									<listOptionValue builtIn="false" value="__GCC_ATOMIC_SHORT_LOCK_FREE=1"/>
-									<listOptionValue builtIn="false" value="__GCC_ATOMIC_INT_LOCK_FREE=1"/>
-									<listOptionValue builtIn="false" value="__GCC_ATOMIC_LONG_LOCK_FREE=1"/>
-									<listOptionValue builtIn="false" value="__GCC_ATOMIC_LLONG_LOCK_FREE=1"/>
-									<listOptionValue builtIn="false" value="__GCC_ATOMIC_POINTER_LOCK_FREE=1"/>
-									<listOptionValue builtIn="false" value="__NO_INLINE__=1"/>
-									<listOptionValue builtIn="false" value="__FLT_EVAL_METHOD__=0"/>
-									<listOptionValue builtIn="false" value="__FLT_RADIX__=2"/>
-									<listOptionValue builtIn="false" value="__DECIMAL_DIG__=17"/>
-									<listOptionValue builtIn="false" value="__xcore__=1"/>
-									<listOptionValue builtIn="false" value="__XS1B__=1"/>
-									<listOptionValue builtIn="false" value="__STDC__=1"/>
-									<listOptionValue builtIn="false" value="__STDC_HOSTED__=1"/>
-									<listOptionValue builtIn="false" value="__cplusplus=199711L"/>
-									<listOptionValue builtIn="false" value="__STDC_UTF_16__=1"/>
-									<listOptionValue builtIn="false" value="__STDC_UTF_32__=1"/>
-									<listOptionValue builtIn="false" value="XCC_VERSION_YEAR=14"/>
-									<listOptionValue builtIn="false" value="XCC_VERSION_MONTH=3"/>
-									<listOptionValue builtIn="false" value="XCC_VERSION_MAJOR=1403"/>
-									<listOptionValue builtIn="false" value="XCC_VERSION_MINOR=2"/>
-									<listOptionValue builtIn="false" value="__XCC_HAVE_FLOAT__=1"/>
-									<listOptionValue builtIn="false" value="_XSCOPE_PROBES_INCLUDE_FILE=&quot;/var/folders/0l/8jd0xy095ps890m302j532580000h5/T//cc8vh80e.h&quot;"/>
-								</option>
-								<option id="com.xmos.cxx.compiler.option.include.paths.1031009526" name="com.xmos.cxx.compiler.option.include.paths" superClass="com.xmos.cxx.compiler.option.include.paths" valueType="includePath">
-									<listOptionValue builtIn="false" value="&quot;${XMOS_TOOL_PATH}/target/include&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${XMOS_TOOL_PATH}/target/include/clang&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${XMOS_TOOL_PATH}/target/include/c++/v1&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/lib_logging/doc}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/lib_xud/doc/rst/images}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/lib_xud/src/user/client}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/lib_xud/src/user/class}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/lib_xud/src/core/included}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/lib_xud/src/core}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/lib_logging/doc/rst}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/lib_logging/src}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/lib_xud}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/lib_logging}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/lib_xud/src/user/control}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/lib_logging/api}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/lib_xud/doc/rst}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/lib_xud/api}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/lib_xud/src}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/lib_xud/doc}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/lib_xud/src/user}&quot;"/>
-								</option>
-								<inputType id="com.xmos.cdt.cxx.compiler.input.cpp.223196941" name="C++" superClass="com.xmos.cdt.cxx.compiler.input.cpp"/>
-							</tool>
-						</toolChain>
-					</folderInfo>
-					<sourceEntries>
-						<entry excluding=".build*" flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name=""/>
-					</sourceEntries>
-				</configuration>
-			</storageModule>
-			<storageModule moduleId="org.eclipse.cdt.core.externalSettings"/>
-		</cconfiguration>
-	</storageModule>
-	<storageModule moduleId="cdtBuildSystem" version="4.0.0">
-		<project id="lib_xua.null.1378855182" name="lib_xua"/>
-	</storageModule>
-	<storageModule moduleId="scannerConfiguration">
-		<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
-	</storageModule>
-	<storageModule moduleId="org.eclipse.cdt.core.LanguageSettingsProviders"/>
-</cproject>

lib_xua/.project

@@ -1,42 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<projectDescription>
-	<name>lib_xua</name>
-	<comment></comment>
-	<projects>
-	</projects>
-	<buildSpec>
-		<buildCommand>
-			<name>com.xmos.cdt.core.ProjectInfoSyncBuilder</name>
-			<arguments>
-			</arguments>
-		</buildCommand>
-		<buildCommand>
-			<name>com.xmos.cdt.core.LegacyProjectCheckerBuilder</name>
-			<arguments>
-			</arguments>
-		</buildCommand>
-		<buildCommand>
-			<name>com.xmos.cdt.core.ModulePathBuilder</name>
-			<arguments>
-			</arguments>
-		</buildCommand>
-		<buildCommand>
-			<name>org.eclipse.cdt.managedbuilder.core.genmakebuilder</name>
-			<triggers>clean,full,incremental,</triggers>
-			<arguments>
-			</arguments>
-		</buildCommand>
-		<buildCommand>
-			<name>org.eclipse.cdt.managedbuilder.core.ScannerConfigBuilder</name>
-			<triggers>full,incremental,</triggers>
-			<arguments>
-			</arguments>
-		</buildCommand>
-	</buildSpec>
-	<natures>
-		<nature>org.eclipse.cdt.core.cnature</nature>
-		<nature>org.eclipse.cdt.managedbuilder.core.managedBuildNature</nature>
-		<nature>org.eclipse.cdt.managedbuilder.core.ScannerConfigNature</nature>
-		<nature>com.xmos.cdt.core.XdeProjectNature</nature>
-	</natures>
-</projectDescription>

lib_xua/.xproject

@@ -1 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?><xproject><repository>lib_xua</repository><partnum>XM-012639-SM</partnum></xproject>

lib_xua/api/xua_audiohub.h

@@ -37,13 +37,13 @@
  *  \param c_dig            channel connected to the clockGen() thread for
  *                          receiving/transmitting samples
  */
-void XUA_AudioHub(chanend ?c_aud, 
-    clock ?clk_audio_mclk, 
-    clock ?clk_audio_bclk, 
+void XUA_AudioHub(chanend ?c_aud,
+    clock ?clk_audio_mclk,
+    clock ?clk_audio_bclk,
     in port p_mclk_in,
     buffered _XUA_CLK_DIR port:32 ?p_lrclk,
     buffered _XUA_CLK_DIR port:32 ?p_bclk,
-    buffered out port:32 (&?p_i2s_dac)[I2S_WIRES_DAC], 
+    buffered out port:32 (&?p_i2s_dac)[I2S_WIRES_DAC],
     buffered in port:32  (&?p_i2s_adc)[I2S_WIRES_ADC]
 #if (XUA_SPDIF_TX_EN) //&& (SPDIF_TX_TILE != AUDIO_IO_TILE)
     , chanend c_spdif_tx

lib_xua/api/xua_conf_default.h

@@ -1,4 +1,4 @@
-// Copyright 2011-2021 XMOS LIMITED.
+// Copyright 2011-2022 XMOS LIMITED.
 // This Software is subject to the terms of the XMOS Public Licence: Version 1.
 /*
  * @brief       Defines relating to device configuration and customisation of lib_xua
@@ -57,8 +57,8 @@
 #define PDM_TILE        AUDIO_IO_TILE
 #endif
 
-/** 
- * @brief Disable USB functionalty just leaving AudioHub 
+/**
+ * @brief Disable USB functionalty just leaving AudioHub
  */
 #ifndef XUA_USB_EN
 #define XUA_USB_EN      1
@@ -83,7 +83,7 @@
 /**
  * @brief Number of DSD output channels. Default: 0 (disabled)
  */
-#if defined(DSD_CHANS_DAC)
+#if defined(DSD_CHANS_DAC) && (DSD_CHANS_DAC != 0)
     #if defined(NATIVE_DSD) && (NATIVE_DSD == 0)
         #undef NATIVE_DSD
     #else
@@ -1140,38 +1140,11 @@
 #endif
 #endif
 
-/* IAP */
-#if defined(IAP) && (IAP == 0)
-#undef IAP
+/* Always enable explicit feedback EP, even when input stream is present */
+#ifndef UAC_FORCE_FEEDBACK_EP
+#define UAC_FORCE_FEEDBACK_EP       (1)
 #endif
 
-/* IAP Interrupt endpoint */
-#if defined(IAP_INT_EP) && (IAP_INT_EP == 0)
-#undef IAP_INT_EP
-#endif
-
-/* IAP EA Native Transport */
-#if defined(IAP_EA_NATIVE_TRANS) && (IAP_EA_NATIVE_TRANS == 0)
-#undef IAP_EA_NATIVE_TRANS
-#endif
-
-#if defined(IAP_EA_NATIVE_TRANS) || defined(__DOXYGEN__)
-/**
- * @brief Number of supported EA Native Interface Alternative settings.
- *
- * Only 1 supported
- */
-#ifndef IAP_EA_NATIVE_TRANS_ALT_COUNT
-    #define IAP_EA_NATIVE_TRANS_ALT_COUNT 1
-#endif
-
-#if (IAP_EA_NATIVE_TRANS_ALT_COUNT > 1)
-    /* Only 1 supported */
-    #error
-#endif
-#endif
-
-
 #if (defined(UAC_FORCE_FEEDBACK_EP) && UAC_FORCE_FEEDBACK_EP == 0)
 #undef UAC_FORCE_FEEDBACK_EP
 #endif
@@ -1228,7 +1201,7 @@ enum USBEndpointNumber_Out
 #endif
 
 #ifndef XUA_ENDPOINT_COUNT_CUSTOM_IN
-#define XUA_ENDPOINT_COUNT_CUSTOM_IN   0 
+#define XUA_ENDPOINT_COUNT_CUSTOM_IN   0
 #endif
 
 #define ENDPOINT_COUNT_IN  (XUA_ENDPOINT_COUNT_IN + XUA_ENDPOINT_COUNT_CUSTOM_IN)
@@ -1476,6 +1449,6 @@ enum USBEndpointNumber_Out
     #define _XUA_CLK_DIR out
 #endif
 
-#if (CODEC_MASTER == 1) && (DSD_CHANS_DAC != 0) 
-#error CODEC_MASTER with DSD is currently unsupported 
+#if (CODEC_MASTER == 1) && (DSD_CHANS_DAC != 0)
+#error CODEC_MASTER with DSD is currently unsupported
 #endif

lib_xua/api/xua_conf_full.h

@@ -1,4 +1,4 @@
-// Copyright 2017-2021 XMOS LIMITED.
+// Copyright 2017-2022 XMOS LIMITED.
 // This Software is subject to the terms of the XMOS Public Licence: Version 1.
 #ifndef __XUA_CONF_FULL_H__
 #define __XUA_CONF_FULL_H__
@@ -9,6 +9,4 @@
 
 #include "xua_conf_default.h"
 
-
-
 #endif

lib_xua/doc/rst/lib_xua.rst

@@ -36,4 +36,3 @@ Older versions of Windows are not guaranteed to operate as expected. Devices are
 
 
 
-.. include:: ../../../CHANGELOG.rst

lib_xua/doc/rst/sw_spdif_rx.rst

@@ -55,7 +55,7 @@ audio driver and handles locking to the S/PDIF clock source if required (see Ext
 Ideally the parity of each word/sample received should be checked.  This is done using the built in 
 ``crc32`` function (see ``xs1.h``):
 
-.. literalinclude:: sc_usb_audio/module_usb_audio/clocking/clockgen.xc
+.. literalinclude:: lib_xua/src/core/clocking/clockgen.xc
   :start-after: //:badParity
   :end-before: //:
 

lib_xua/doc/rst/xdoc.conf

@@ -1,2 +1,5 @@
-XMOSNEWSTYLE = 1
+XMOSNEWSTYLE = 2
 DOXYGEN_DIRS=../../api
+SOURCE_INCLUDE_DIRS=../../../lib_xua
+SPHINX_MASTER_DOC=lib_xua
+

lib_xua/host/xmosdfu/libusb/OSX64/libusb.h

@@ -1277,7 +1277,7 @@ enum libusb_capability {
 	 * still have to call additional libusb functions such as
 	 * \ref libusb_detach_kernel_driver(). */
 	LIBUSB_CAP_HAS_HID_ACCESS = 0x0100,
-	/** The library supports detaching of the default USB driver, using 
+	/** The library supports detaching of the default USB driver, using
 	 * \ref libusb_detach_kernel_driver(), if one is set by the OS kernel */
 	LIBUSB_CAP_SUPPORTS_DETACH_KERNEL_DRIVER = 0x0101
 };

lib_xua/host/xmosdfu/libusb/Win32/libusb.h

@@ -1273,7 +1273,7 @@ enum libusb_capability {
 	 * still have to call additional libusb functions such as
 	 * \ref libusb_detach_kernel_driver(). */
 	LIBUSB_CAP_HAS_HID_ACCESS = 0x0100,
-	/** The library supports detaching of the default USB driver, using 
+	/** The library supports detaching of the default USB driver, using
 	 * \ref libusb_detach_kernel_driver(), if one is set by the OS kernel */
 	LIBUSB_CAP_SUPPORTS_DETACH_KERNEL_DRIVER = 0x0101
 };

lib_xua/module_build_info

@@ -1,10 +1,11 @@
-VERSION = 3.0.0
+VERSION = 3.2.0
 
-DEPENDENT_MODULES = lib_logging(>=3.0.0) \
-                    lib_xassert(>=4.0.0) \
-                    lib_xud(>=2.0.1) \
+DEPENDENT_MODULES = lib_logging(>=3.1.0) \
+                    lib_xassert(>=4.1.0) \
+                    lib_xud(>=2.0.2) \
                     lib_spdif(>=4.0.0) \
-                    lib_mic_array(>=4.0.0)
+                    lib_mic_array(>=4.0.0) \
+                    lib_locks(>=2.1.0)
 
 MODULE_XCC_FLAGS = $(XCC_FLAGS) \
                    -O3 \

lib_xua/src/core/audiohub/audiohub_dsd.h

@@ -28,7 +28,7 @@ static inline void DoDsdNative(unsigned samplesOut[], unsigned &dsdSample_l, uns
     asm volatile("out res[%0], %1"::"r"(p_dsd_dac[1]),"r"(dsdSample_r));
 }
 
-/* This function performs the DOP loop and collects 16b of DSD per loop 
+/* This function performs the DOP loop and collects 16b of DSD per loop
    and outputs a 32b word into the port buffer every other cycle. */
 static inline void DoDsdDop(int &everyOther, unsigned samplesOut[], unsigned &dsdSample_l, unsigned &dsdSample_r, unsigned divide)
 {
@@ -38,7 +38,7 @@ static inline void DoDsdDop(int &everyOther, unsigned samplesOut[], unsigned &ds
         dsdSample_r = ((samplesOut[1] & 0xffff00) << 8);
         everyOther = 1;
     }
-    else 
+    else
     {
         everyOther = 0;
         dsdSample_l =  dsdSample_l | ((samplesOut[0] & 0xffff00) >> 8);
@@ -77,7 +77,7 @@ static inline int DoDsdDopCheck(unsigned &dsdMode, int &dsdCount, unsigned curSa
             dsdMarker = DSD_MARKER_2;
         }
     }
-    else if(dsdMode == DSD_MODE_DOP) 
+    else if(dsdMode == DSD_MODE_DOP)
     {
         /* If we are running in DOP mode, check if we need to come out */
         if((DSD_MASK(samplesOut[0]) != DSD_MARKER_1) && (DSD_MASK(samplesOut[1]) != DSD_MARKER_1))

lib_xua/src/core/audiohub/audiohub_initport.xc

@@ -73,7 +73,7 @@ void InitPorts_master(unsigned divide, buffered _XUA_CLK_DIR port:32 p_lrclk, bu
 #endif
 }
 
-#else 
+#else
 
 void InitPorts_slave(unsigned divide, buffered _XUA_CLK_DIR port:32 p_lrclk, buffered _XUA_CLK_DIR port:32 p_bclk, buffered out port:32 (&?p_i2s_dac)[I2S_WIRES_DAC], buffered in port:32  (&?p_i2s_adc)[I2S_WIRES_ADC])
 {

lib_xua/src/core/audiohub/xua_audiohub.xc

@@ -32,7 +32,7 @@
 
 #if (XUA_NUM_PDM_MICS > 0)
 #include "xua_pdm_mic.h"
-#endif 
+#endif
 
 #if (AUD_TO_USB_RATIO > 1)
 #include "src.h"
@@ -76,7 +76,7 @@ void InitPorts_slave
 #else
 void InitPorts_master
 #endif
-(unsigned divide, buffered _XUA_CLK_DIR port:32 p_lrclk, buffered _XUA_CLK_DIR port:32 p_bclk, buffered out port:32 (&?p_i2s_dac)[I2S_WIRES_DAC], 
+(unsigned divide, buffered _XUA_CLK_DIR port:32 p_lrclk, buffered _XUA_CLK_DIR port:32 p_bclk, buffered out port:32 (&?p_i2s_dac)[I2S_WIRES_DAC],
     buffered in port:32  (&?p_i2s_adc)[I2S_WIRES_ADC]);
 
 
@@ -164,7 +164,7 @@ static inline int HandleSampleClock(int frameCount, buffered _XUA_CLK_DIR port:3
     if(I2S_MODE_TDM)
     {
         /* Only check for the rising edge of frame sync being in the right place because falling edge timing not specified */
-        if (frameCount == 1) 
+        if (frameCount == 1)
         {
             lrval &= 0xc0000000;                 // Mask off last two (MSB) frame clock bits which are the most recently sampled
             syncError += (lrval != 0x80000000);  // We need MSB = 1 and MSB-1 = 0 to signify rising edge
@@ -177,12 +177,12 @@ static inline int HandleSampleClock(int frameCount, buffered _XUA_CLK_DIR port:3
     }
     else
     {
-        if(frameCount == 0) 
+        if(frameCount == 0)
             syncError += (lrval != 0x80000000);
         else
             syncError += (lrval != 0x7FFFFFFF);
     }
- 
+
     return syncError;
 
 #else
@@ -200,7 +200,7 @@ static inline int HandleSampleClock(int frameCount, buffered _XUA_CLK_DIR port:3
         else
             p_lrclk <: 0x7fffffff;
     }
-    
+
     return 0;
 #endif
 
@@ -219,7 +219,7 @@ unsigned static AudioHub_MainLoop(chanend ?c_out, chanend ?c_spd_out
 #if (XUA_NUM_PDM_MICS > 0)
     , chanend c_pdm_pcm
 #endif
-    , buffered _XUA_CLK_DIR port:32 ?p_lrclk, 
+    , buffered _XUA_CLK_DIR port:32 ?p_lrclk,
     buffered _XUA_CLK_DIR port:32 ?p_bclk,
     buffered out port:32 (&?p_i2s_dac)[I2S_WIRES_DAC],
     buffered in port:32  (&?p_i2s_adc)[I2S_WIRES_ADC]
@@ -322,14 +322,14 @@ unsigned static AudioHub_MainLoop(chanend ?c_out, chanend ?c_spd_out
             InitPorts_master(divide, p_lrclk, p_bclk, p_i2s_dac, p_i2s_adc);
 #endif
         }
-        
+
         /* Note we always expect syncError to be 0 when we are master */
         while(!syncError)
         {
 #if (DSD_CHANS_DAC != 0) && (NUM_USB_CHAN_OUT > 0)
-            if(dsdMode == DSD_MODE_NATIVE) 
+            if(dsdMode == DSD_MODE_NATIVE)
                 DoDsdNative(samplesOut, dsdSample_l, dsdSample_r, divide);
-            else if(dsdMode == DSD_MODE_DOP) 
+            else if(dsdMode == DSD_MODE_DOP)
                 DoDsdDop(everyOther, samplesOut, dsdSample_l, dsdSample_r, divide);
             else
 #endif
@@ -471,7 +471,7 @@ unsigned static AudioHub_MainLoop(chanend ?c_out, chanend ?c_spd_out
 #endif
             }
 
-           frameCount++; 
+           frameCount++;
 
 #if (I2S_CHANS_ADC != 0)
                 index = 0;
@@ -663,7 +663,7 @@ void XUA_AudioHub(chanend ?c_aud, clock ?clk_audio_mclk, clock ?clk_audio_bclk,
     in port p_mclk_in,
     buffered _XUA_CLK_DIR port:32 ?p_lrclk,
     buffered _XUA_CLK_DIR port:32 ?p_bclk,
-    buffered out port:32 (&?p_i2s_dac)[I2S_WIRES_DAC], 
+    buffered out port:32 (&?p_i2s_dac)[I2S_WIRES_DAC],
     buffered in port:32  (&?p_i2s_adc)[I2S_WIRES_ADC]
 #if (XUA_SPDIF_TX_EN) //&& (SPDIF_TX_TILE != AUDIO_IO_TILE)
     , chanend c_spdif_out
@@ -717,7 +717,7 @@ void XUA_AudioHub(chanend ?c_aud, clock ?clk_audio_mclk, clock ?clk_audio_bclk,
     start_clock(clk_mst_spd);
 #endif
 #endif
-    
+
     /* Perform required CODEC/ADC/DAC initialisation */
     AudioHwInit();
 

lib_xua/src/core/buffer/decouple/decouple.xc

@@ -748,28 +748,31 @@ void XUA_Buffer_Decouple(chanend c_mix_out
                 outct(c_mix_out, SET_SAMPLE_FREQ);
                 outuint(c_mix_out, sampFreq);
 
-                inUnderflow = 1;
-                SET_SHARED_GLOBAL(g_aud_to_host_rdptr, aud_to_host_fifo_start);
-                SET_SHARED_GLOBAL(g_aud_to_host_wrptr, aud_to_host_fifo_start);
-                SET_SHARED_GLOBAL(g_aud_to_host_dptr,aud_to_host_fifo_start+4);
-
-                /* Set buffer to send back to zeros buffer */
-                SET_SHARED_GLOBAL(g_aud_to_host_buffer, g_aud_to_host_zeros);
-
-                /* Update size of zeros buffer (and sampsToWrite) */
-                SetupZerosSendBuffer(aud_to_host_usb_ep, sampFreq, g_curSubSlot_In);
-
-                /* Reset OUT buffer state */
-                outUnderflow = 1;
-                SET_SHARED_GLOBAL(g_aud_from_host_rdptr, aud_from_host_fifo_start);
-                SET_SHARED_GLOBAL(g_aud_from_host_wrptr, aud_from_host_fifo_start);
-                SET_SHARED_GLOBAL(aud_data_remaining_to_device, 0);
-
-                if(outOverflow)
+                if(sampFreq != AUDIO_STOP_FOR_DFU)
                 {
-                    /* If we were previously in overflow we wont have marked as ready */
-                    XUD_SetReady_OutPtr(aud_from_host_usb_ep, aud_from_host_fifo_start+4);
-                    outOverflow = 0;
+                    inUnderflow = 1;
+                    SET_SHARED_GLOBAL(g_aud_to_host_rdptr, aud_to_host_fifo_start);
+                    SET_SHARED_GLOBAL(g_aud_to_host_wrptr, aud_to_host_fifo_start);
+                    SET_SHARED_GLOBAL(g_aud_to_host_dptr,aud_to_host_fifo_start+4);
+
+                    /* Set buffer to send back to zeros buffer */
+                    SET_SHARED_GLOBAL(g_aud_to_host_buffer, g_aud_to_host_zeros);
+
+                    /* Update size of zeros buffer (and sampsToWrite) */
+                    SetupZerosSendBuffer(aud_to_host_usb_ep, sampFreq, g_curSubSlot_In);
+
+                    /* Reset OUT buffer state */
+                    outUnderflow = 1;
+                    SET_SHARED_GLOBAL(g_aud_from_host_rdptr, aud_from_host_fifo_start);
+                    SET_SHARED_GLOBAL(g_aud_from_host_wrptr, aud_from_host_fifo_start);
+                    SET_SHARED_GLOBAL(aud_data_remaining_to_device, 0);
+
+                    if(outOverflow)
+                    {
+                        /* If we were previously in overflow we wont have marked as ready */
+                        XUD_SetReady_OutPtr(aud_from_host_usb_ep, aud_from_host_fifo_start+4);
+                        outOverflow = 0;
+                    }
                 }
 
                 /* Wait for handshake back and pass back up */
@@ -780,7 +783,8 @@ void XUA_Buffer_Decouple(chanend c_mix_out
 
                 ENABLE_INTERRUPTS();
 
-                speedRem = 0;
+                if(sampFreq != AUDIO_STOP_FOR_DFU)
+                    speedRem = 0;
                 continue;
             }
 #if (AUDIO_CLASS == 2)

lib_xua/src/core/buffer/ep/ep_buffer.xc

@@ -1,4 +1,4 @@
-// Copyright 2011-2021 XMOS LIMITED.
+// Copyright 2011-2022 XMOS LIMITED.
 // This Software is subject to the terms of the XMOS Public Licence: Version 1.
 #include "xua.h"
 #if XUA_USB_EN
@@ -91,9 +91,9 @@ unsigned int fb_clocks[4];
 #define FB_TOLERANCE 0x100
 
 void XUA_Buffer(
-            register chanend c_aud_out, 
+            register chanend c_aud_out,
 #if (NUM_USB_CHAN_IN > 0)
-	        register chanend c_aud_in,
+            register chanend c_aud_in,
 #endif
 #if (NUM_USB_CHAN_IN == 0) || defined (UAC_FORCE_FEEDBACK_EP)
             chanend c_aud_fb,
@@ -196,9 +196,9 @@ unsafe{volatile unsigned * unsafe masterClockFreq_ptr;}
  * @param   c_aud_fb      chanend for feeback to xud
  * @return  void
  */
-void XUA_Buffer_Ep(register chanend c_aud_out, 
+void XUA_Buffer_Ep(register chanend c_aud_out,
 #if (NUM_USB_CHAN_IN > 0)
-	register chanend c_aud_in,
+    register chanend c_aud_in,
 #endif
 #if (NUM_USB_CHAN_IN == 0) || defined (UAC_FORCE_FEEDBACK_EP)
     chanend c_aud_fb,
@@ -373,15 +373,13 @@ void XUA_Buffer_Ep(register chanend c_aud_out,
 #endif
 
 #if( 0 < HID_CONTROLS )
-    UserHIDInit();
 
     while (!hidIsReportDescriptorPrepared())
         ;
 
-    /* Get the a report - we don't really care which it is, so long as there's some data we can grab. */
-    int hidReportLength = (int) UserHIDGetData(hidGetNextValidReportId(0), g_hidData); 
-
-    XUD_SetReady_In(ep_hid, g_hidData, hidReportLength);
+    UserHIDInit();
+    unsigned hid_ready_flag = 0U;
+    unsigned hid_ready_id = 0U;
 
 #endif
 
@@ -392,6 +390,8 @@ void XUA_Buffer_Ep(register chanend c_aud_out,
 #endif
 #endif
 
+    timer tmr;
+
     while(1)
     {
         XUD_Result_t result;
@@ -448,9 +448,9 @@ void XUA_Buffer_Ep(register chanend c_aud_out,
                         if(receivedSampleFreq != AUDIO_STOP_FOR_DFU)
                         {
                             sampleFreq = receivedSampleFreq;
-   #ifdef FB_TOLERANCE_TEST
+#ifdef FB_TOLERANCE_TEST
                             expected_fb = ((sampleFreq * 0x2000) / frameTime);
-   #endif
+#endif
                             /* Reset FB */
                             /* Note, Endpoint 0 will hold off host for a sufficient period to allow our feedback
                              * to stabilise (i.e. sofCount == 128 to fire) */
@@ -566,7 +566,7 @@ void XUA_Buffer_Ep(register chanend c_aud_out,
                 {
                     unsigned usb_speed;
                     GET_SHARED_GLOBAL(usb_speed, g_curUsbSpeed);
-                   
+
 #if FB_USE_REF_CLOCK
                     unsigned long long feedbackMul = 64ULL;
 
@@ -642,7 +642,7 @@ void XUA_Buffer_Ep(register chanend c_aud_out,
                         clockcounter = 0;
                     }
 #else
- 
+
                     /* Assuming 48kHz from a 24.576 master clock (0.0407uS period)
                      * MCLK ticks per SOF = 125uS / 0.0407 = 3072 MCLK ticks per SOF.
                      * expected Feedback is 48000/8000 = 6 samples. so 0x60000 in 16:16 format.
@@ -711,7 +711,7 @@ void XUA_Buffer_Ep(register chanend c_aud_out,
 #endif
                     sofCount++;
                 }
-            break;
+                break;
 
 #if (NUM_USB_CHAN_IN > 0)
             /* Sent audio packet DEVICE -> HOST */
@@ -719,8 +719,8 @@ void XUA_Buffer_Ep(register chanend c_aud_out,
             {
                 /* Inform stream that buffer sent */
                 SET_SHARED_GLOBAL0(g_aud_to_host_flag, bufferIn+1);
+                break;
             }
-            break;
 #endif
 
 #if (NUM_USB_CHAN_OUT > 0)
@@ -740,8 +740,8 @@ void XUA_Buffer_Ep(register chanend c_aud_out,
                 {
                     XUD_SetReady_In(ep_aud_fb, (fb_clocks, unsigned char[]), 3);
                 }
+                break;
             }
-            break;
 #endif
             /* Received Audio packet HOST -> DEVICE. Datalength written to length */
             case XUD_GetData_Select(c_aud_out, ep_aud_out, length, result):
@@ -752,175 +752,165 @@ void XUA_Buffer_Ep(register chanend c_aud_out,
 
                 /* Sync with decouple thread */
                 SET_SHARED_GLOBAL0(g_aud_from_host_flag, 1);
-             }
                 break;
+             }
 #endif
 
 #ifdef MIDI
-        case XUD_GetData_Select(c_midi_from_host, ep_midi_from_host, length, result):
+            case XUD_GetData_Select(c_midi_from_host, ep_midi_from_host, length, result):
 
-            if((result == XUD_RES_OKAY) && (length > 0))
-            {
-                /* Get buffer data from host - MIDI OUT from host always into a single buffer */
-                midi_data_remaining_to_device = length;
-
-                midi_from_host_rdptr = midi_from_host_buffer;
-
-                if (midi_data_remaining_to_device)
+                if((result == XUD_RES_OKAY) && (length > 0))
                 {
-                    read_via_xc_ptr(datum, midi_from_host_rdptr);
-                    outuint(c_midi, datum);
-                    midi_from_host_rdptr += 4;
-                    midi_data_remaining_to_device -= 4;
+                    /* Get buffer data from host - MIDI OUT from host always into a single buffer */
+                    midi_data_remaining_to_device = length;
+
+                    midi_from_host_rdptr = midi_from_host_buffer;
+
+                    if (midi_data_remaining_to_device)
+                    {
+                        read_via_xc_ptr(datum, midi_from_host_rdptr);
+                        outuint(c_midi, datum);
+                        midi_from_host_rdptr += 4;
+                        midi_data_remaining_to_device -= 4;
+                    }
                 }
-            }
-            break;
+                break;
 
-        /* MIDI IN to host */
-        case XUD_SetData_Select(c_midi_to_host, ep_midi_to_host, result):
+            /* MIDI IN to host */
+            case XUD_SetData_Select(c_midi_to_host, ep_midi_to_host, result):
 
-            /* The buffer has been sent to the host, so we can ack the midi thread */
-            if (midi_data_collected_from_device != 0)
-            {
-                /* Swap the collecting and sending buffer */
-                swap(midi_to_host_buffer_being_collected, midi_to_host_buffer_being_sent);
+                /* The buffer has been sent to the host, so we can ack the midi thread */
+                if (midi_data_collected_from_device != 0)
+                {
+                    /* Swap the collecting and sending buffer */
+                    swap(midi_to_host_buffer_being_collected, midi_to_host_buffer_being_sent);
 
-                /* Request to send packet */
-                XUD_SetReady_InPtr(ep_midi_to_host, midi_to_host_buffer_being_sent, midi_data_collected_from_device);
+                    /* Request to send packet */
+                    XUD_SetReady_InPtr(ep_midi_to_host, midi_to_host_buffer_being_sent, midi_data_collected_from_device);
 
-                /* Mark as waiting for host to poll us */
-                midi_waiting_on_send_to_host = 1;
-                /* Reset the collected data count */
-                midi_data_collected_from_device = 0;
-            }
-            else
-            {
-                midi_waiting_on_send_to_host = 0;
-            }
-          break;
+                    /* Mark as waiting for host to poll us */
+                    midi_waiting_on_send_to_host = 1;
+                    /* Reset the collected data count */
+                    midi_data_collected_from_device = 0;
+                }
+                else
+                {
+                    midi_waiting_on_send_to_host = 0;
+                }
+                break;
 #endif
 
 #ifdef IAP
-        /* IAP OUT from host. Datalength writen to tmp */
-        case XUD_GetData_Select(c_iap_from_host, ep_iap_from_host, length, result):
+            /* IAP OUT from host. Datalength writen to tmp */
+            case XUD_GetData_Select(c_iap_from_host, ep_iap_from_host, length, result):
 
-            if((result == XUD_RES_OKAY) && (length > 0))
-            {
-                iap_data_remaining_to_device = length;
-
-                if(iap_data_remaining_to_device)
+                if((result == XUD_RES_OKAY) && (length > 0))
                 {
-                    // Send length first so iAP thread knows how much data to expect
-                    // Don't expect ack from this to make it simpler
-                    outuint(c_iap, iap_data_remaining_to_device);
+                    iap_data_remaining_to_device = length;
 
-                    /* Send out first byte in buffer */
-                    datum_iap = iap_from_host_buffer[0];
-                    outuint(c_iap, datum_iap);
+                    if(iap_data_remaining_to_device)
+                    {
+                        // Send length first so iAP thread knows how much data to expect
+                        // Don't expect ack from this to make it simpler
+                        outuint(c_iap, iap_data_remaining_to_device);
 
-                    /* Set read ptr to next byte in buffer */
-                    iap_from_host_rdptr = 1;
-                    iap_data_remaining_to_device -= 1;
+                        /* Send out first byte in buffer */
+                        datum_iap = iap_from_host_buffer[0];
+                        outuint(c_iap, datum_iap);
+
+                        /* Set read ptr to next byte in buffer */
+                        iap_from_host_rdptr = 1;
+                        iap_data_remaining_to_device -= 1;
+                    }
                 }
-            }
-            break;
+                break;
 
-        /* IAP IN to host */
-        case XUD_SetData_Select(c_iap_to_host, ep_iap_to_host, result):
+            /* IAP IN to host */
+            case XUD_SetData_Select(c_iap_to_host, ep_iap_to_host, result):
 
-            if(result == XUD_RES_RST)
-            {
-                XUD_ResetEndpoint(ep_iap_to_host, null);
+                if(result == XUD_RES_RST)
+                {
+                    XUD_ResetEndpoint(ep_iap_to_host, null);
 #ifdef IAP_INT_EP
-                XUD_ResetEndpoint(ep_iap_to_host_int, null);
+                    XUD_ResetEndpoint(ep_iap_to_host_int, null);
 #endif
-                iap_send_reset(c_iap);
-                iap_draining_chan = 1; // Drain c_iap until a reset is sent back
-                iap_data_collected_from_device = 0;
-                iap_data_remaining_to_device = -1;
-                iap_expected_data_length = 0;
-                iap_from_host_rdptr = 0;
-            }
-            else
-            {
-                /* Send out an iAP packet to host, ACK last msg from iAP to let it know we can move on..*/
-                iap_send_ack(c_iap);
-            }
-            break;  /* IAP IN to host */
+                    iap_send_reset(c_iap);
+                    iap_draining_chan = 1; // Drain c_iap until a reset is sent back
+                    iap_data_collected_from_device = 0;
+                    iap_data_remaining_to_device = -1;
+                    iap_expected_data_length = 0;
+                    iap_from_host_rdptr = 0;
+                }
+                else
+                {
+                    /* Send out an iAP packet to host, ACK last msg from iAP to let it know we can move on..*/
+                    iap_send_ack(c_iap);
+                }
+                break;  /* IAP IN to host */
 
 #ifdef IAP_INT_EP
-        case XUD_SetData_Select(c_iap_to_host_int, ep_iap_to_host_int, result):
+            case XUD_SetData_Select(c_iap_to_host_int, ep_iap_to_host_int, result):
 
-            /* Do nothing.. */
-            /* Note, could get a reset notification here, but deal with it in the case above */
-            break;
+                /* Do nothing.. */
+                /* Note, could get a reset notification here, but deal with it in the case above */
+                break;
 #endif
 
 #ifdef IAP_EA_NATIVE_TRANS
-        /* iAP EA Native Transport OUT from host */
-        case XUD_GetData_Select(c_iap_ea_native_out, ep_iap_ea_native_out, iap_ea_native_rx_length, result):
-            if ((result == XUD_RES_OKAY) && iap_ea_native_rx_length > 0)
-            {
-                // Notify EA Protocol user code we have iOS app data from XUD
-                iAP2_EANativeTransport_writeToChan_start(c_iap_ea_native_data, EA_NATIVE_SEND_DATA);
-            }
-            break;
+            /* iAP EA Native Transport OUT from host */
+            case XUD_GetData_Select(c_iap_ea_native_out, ep_iap_ea_native_out, iap_ea_native_rx_length, result):
+                if ((result == XUD_RES_OKAY) && iap_ea_native_rx_length > 0)
+                {
+                    // Notify EA Protocol user code we have iOS app data from XUD
+                    iAP2_EANativeTransport_writeToChan_start(c_iap_ea_native_data, EA_NATIVE_SEND_DATA);
+                }
+                break;
 
-        /* iAP EA Native Transport IN to host */
-        case XUD_SetData_Select(c_iap_ea_native_in, ep_iap_ea_native_in, result):
-            switch (result)
-            {
-                case XUD_RES_RST:
-                    XUD_ResetEndpoint(ep_iap_ea_native_in, null);
-                    // Notify user code of USB reset to allow any state to be cleared
-                    iAP2_EANativeTransport_writeToChan_start(c_iap_ea_native_data, EA_NATIVE_SEND_CONTROL);
-                    // Set up the control flag to send to EA Protocol user code when it responds
-                    iap_ea_native_control_flag = EA_NATIVE_RESET;
-                    iap_ea_native_control_to_send = 1;
-                    break;
+            /* iAP EA Native Transport IN to host */
+            case XUD_SetData_Select(c_iap_ea_native_in, ep_iap_ea_native_in, result):
+                switch (result)
+                {
+                    case XUD_RES_RST:
+                        XUD_ResetEndpoint(ep_iap_ea_native_in, null);
+                        // Notify user code of USB reset to allow any state to be cleared
+                        iAP2_EANativeTransport_writeToChan_start(c_iap_ea_native_data, EA_NATIVE_SEND_CONTROL);
+                        // Set up the control flag to send to EA Protocol user code when it responds
+                        iap_ea_native_control_flag = EA_NATIVE_RESET;
+                        iap_ea_native_control_to_send = 1;
+                        break;
 
-                case XUD_RES_OKAY: // EA Protocol user data successfully passed to XUD
-                    // Notify user code
-                    iAP2_EANativeTransport_writeToChan_start(c_iap_ea_native_data, EA_NATIVE_SEND_CONTROL);
-                    // Set up the control flag to send to EA Protocol user code when it responds
-                    iap_ea_native_control_flag = EA_NATIVE_DATA_SENT;
-                    iap_ea_native_control_to_send = 1;
-                    break;
-            }
-            break;
-            //::
+                    case XUD_RES_OKAY: // EA Protocol user data successfully passed to XUD
+                        // Notify user code
+                        iAP2_EANativeTransport_writeToChan_start(c_iap_ea_native_data, EA_NATIVE_SEND_CONTROL);
+                        // Set up the control flag to send to EA Protocol user code when it responds
+                        iap_ea_native_control_flag = EA_NATIVE_DATA_SENT;
+                        iap_ea_native_control_to_send = 1;
+                        break;
+                }
+                break;
+                //::
 #endif
 #endif
 
 #if( 0 < HID_CONTROLS )
-            /* HID Report Data */
-            case (hidIsChangePending(0U) || !HidIsSetIdleSilenced(0U)) => XUD_SetData_Select(c_hid, ep_hid, result):
-            {
-                timer tmr;
+                /* HID Report Data */
+            case XUD_SetData_Select(c_hid, ep_hid, result):
+                hid_ready_flag = 0U;
                 unsigned reportTime;
                 tmr :> reportTime;
-
-                for(unsigned id = hidIsReportIdInUse(); id < hidGetReportIdLimit(); ++id) {
-                    if(0U == id || (hidIsChangePending(id) || !HidIsSetIdleSilenced(id))) {
-                        hidCaptureReportTime(id, reportTime);
-                        int hidDataLength = (int) UserHIDGetData(id, g_hidData);
-                        XUD_SetReady_In(ep_hid, g_hidData, hidDataLength);
-                        hidCalcNextReportTime(id);
-                        hidClearChangePending(id);
-                        break;
-                    }
-                }
-            }
-            break;
+                hidCaptureReportTime(hid_ready_id, reportTime);
+                hidCalcNextReportTime(hid_ready_id);
+                hidClearChangePending(hid_ready_id);
+                break;
 #endif
 
 #ifdef MIDI
-            /* Received word from MIDI thread - Check for ACK or Data */
+                /* Received word from MIDI thread - Check for ACK or Data */
             case midi_get_ack_or_data(c_midi, is_ack, datum):
                 if (is_ack)
                 {
                     /* An ack from the midi/uart thread means it has accepted some data we sent it
-                     * we are okay to send another word */
+                        * we are okay to send another word */
                     if (midi_data_remaining_to_device <= 0)
                     {
                         /* We have read an entire packet - Mark ready to receive another */
@@ -985,7 +975,7 @@ void XUA_Buffer_Ep(register chanend c_aud_out,
                     if (is_ack_iap)
                     {
                         /* An ack from the iap/uart thread means it has accepted some data we sent it
-                         * we are okay to send another word */
+                            * we are okay to send another word */
                         if (iap_data_remaining_to_device == 0)
                         {
                             /* We have read an entire packet - Mark ready to receive another */
@@ -1018,7 +1008,7 @@ void XUA_Buffer_Ep(register chanend c_aud_out,
                             }
                             else
                             {
-                               // Too many events from device - drop
+                                // Too many events from device - drop
                             }
 
                             /* Once we have the whole message, sent it to host */
@@ -1056,7 +1046,7 @@ void XUA_Buffer_Ep(register chanend c_aud_out,
                 }
                 break;
 
-# if IAP_EA_NATIVE_TRANS
+    # if IAP_EA_NATIVE_TRANS
             /* Change of EA Native Transport interface setting */
             case inuint_byref(c_iap_ea_native_ctrl, iap_ea_native_interface_alt_setting):
                 /* Handshake */
@@ -1114,14 +1104,33 @@ void XUA_Buffer_Ep(register chanend c_aud_out,
                         break;
                 }
                 break;
-                //::
-#endif
+#endif  // if IAP_EA_NATIVE_TRANS
 
+#endif  // ifdef IAP
+
+            default:
+#if ( 0 < HID_CONTROLS )
+                if (!hid_ready_flag)
+                {
+                    for (unsigned id = hidIsReportIdInUse(); id < hidGetReportIdLimit(); id++)
+                    {
+                        if ( hidIsChangePending(id) || !HidIsSetIdleSilenced(id) )
+                        {
+                            int hidDataLength = (int) UserHIDGetData(id, g_hidData);
+                            XUD_SetReady_In(ep_hid, g_hidData, hidDataLength);
+
+                            hid_ready_id = id;
+                            hid_ready_flag = 1U;
+                            break;
+                        }
+                    }
+                }
 #endif
+                break;
+                //::
 
 
         }
-
     }
 }
 #endif /* XUA_USB_EN */

lib_xua/src/core/clocking/clockgen.xc

@@ -1,4 +1,4 @@
-// Copyright 2011-2021 XMOS LIMITED.
+// Copyright 2011-2022 XMOS LIMITED.
 // This Software is subject to the terms of the XMOS Public Licence: Version 1.
 
 #include <xs1.h>
@@ -665,7 +665,7 @@ void clockGen (streaming chanend ?c_spdif_rx, chanend ?c_adat_rx, out port p, ch
                                     /* Inspect for if we need to produce an edge */
                                     if ((adatCounters.receivedSamples >= adatCounters.samplesPerTick))
                                     {
-                                        /* Check edge is about right... S/PDIF may have changed freq... */
+                                        /* Check edge is about right... ADAT may have changed freq... */
                                         if (timeafter(adatReceivedTime, (timeLastEdge + LOCAL_CLOCK_INCREMENT - LOCAL_CLOCK_MARGIN)))
                                         {
                                             /* Record edge time */

lib_xua/src/core/endpoint0/xua_endpoint0.c

@@ -1,4 +1,4 @@
-// Copyright 2011-2021 XMOS LIMITED.
+// Copyright 2011-2022 XMOS LIMITED.
 // This Software is subject to the terms of the XMOS Public Licence: Version 1.
 /**
  * @brief   Implements endpoint zero for an USB Audio 1.0/2.0 device
@@ -258,8 +258,8 @@ void XUA_Endpoint0_setVendorId(unsigned short vid) {
 }
 
 void concatenateAndCopyStrings(char* string1, char* string2, char* string_buffer) {
-    debug_printf("concatenateAndCopyStrings() for \"%s\" and \"%s\"\n", string1, string2);    
-        
+    debug_printf("concatenateAndCopyStrings() for \"%s\" and \"%s\"\n", string1, string2);
+
     memset(string_buffer, '\0', strlen(string_buffer));
 
     uint32_t remaining_buffer_size = MIN(strlen(string1), XUA_MAX_STR_LEN-1);
@@ -313,7 +313,7 @@ void XUA_Endpoint0_setStrTable() {
     concatenateAndCopyStrings(g_product_str, "", g_strTable.usbInputTermStr_Audio2);
     concatenateAndCopyStrings(g_product_str, "", g_strTable.usbOutputTermStr_Audio2);
 #endif
-    
+
     // update Serial strings
     concatenateAndCopyStrings(g_serial_str, "", g_strTable.serialStr);
 }
@@ -483,7 +483,7 @@ void XUA_Endpoint0_init(chanend c_ep0_out, chanend c_ep0_in, NULLABLE_RESOURCE(c
     if (DFUReportResetState(null))
     {
         assert((c_audioControl != NULL) && msg("DFU not supported when c_audioControl is null"));
-    
+
         /* Stop audio */
         outuint(c_audioControl, SET_SAMPLE_FREQ);
         outuint(c_audioControl, AUDIO_STOP_FOR_DFU);
@@ -492,37 +492,44 @@ void XUA_Endpoint0_init(chanend c_ep0_out, chanend c_ep0_in, NULLABLE_RESOURCE(c
     }
 #endif
 
-#ifdef XUA_USB_DESCRIPTOR_OVERWRITE_RATE_RES	//change USB descriptor frequencies and bit resolution values here
+#ifdef XUA_USB_DESCRIPTOR_OVERWRITE_RATE_RES //change USB descriptor frequencies and bit resolution values here
 
-    cfgDesc_Audio1[USB_AS_IN_INTERFACE_DESCRIPTOR_OFFSET_SUB_FRAME] = get_device_to_usb_bit_res() >> 3; 	//sub frame rate = bit rate /8
-    cfgDesc_Audio1[USB_AS_IN_INTERFACE_DESCRIPTOR_OFFSET_SUB_FRAME + 1] = (get_device_to_usb_bit_res() & 0xff);		//bit resolution
+    const int num_of_usb_descriptor_freq = 3; //This should be =3 according to the comments "using a value of <=2 or > 7 for num_freqs_a1 causes enumeration issues on Windows" in xua_ep0_descriptors.h
 
-    cfgDesc_Audio1[USB_AS_OUT_INTERFACE_DESCRIPTOR_OFFSET_SUB_FRAME] = get_usb_to_device_bit_res() >> 3; 	//sub frame rate = bit rate /8
-    cfgDesc_Audio1[USB_AS_OUT_INTERFACE_DESCRIPTOR_OFFSET_SUB_FRAME + 1] = (get_usb_to_device_bit_res() & 0xff);		//bit resolution
+#if( 0 < NUM_USB_CHAN_IN )
 
-    const unsigned num_of_usb_descriptor_freq=3;	//This should be =3 according to the comments "using a value of <=2 or > 7 for num_freqs_a1 causes enumeration issues on Windows" in xua_ep0_descriptors.h
-    int i=0;
-    for(i=0;i<num_of_usb_descriptor_freq;i++)
+    cfgDesc_Audio1[USB_AS_IN_INTERFACE_DESCRIPTOR_OFFSET_SUB_FRAME] = get_device_to_usb_bit_res() >> 3; //sub frame rate = bit rate /8
+    cfgDesc_Audio1[USB_AS_IN_INTERFACE_DESCRIPTOR_OFFSET_SUB_FRAME + 1] = (get_device_to_usb_bit_res() & 0xff); //bit resolution
+
+    for(int i=0;i<num_of_usb_descriptor_freq;i++)
     {
         cfgDesc_Audio1[USB_AS_IN_INTERFACE_DESCRIPTOR_OFFSET_FREQ + 3*i] = get_device_to_usb_rate() & 0xff;
         cfgDesc_Audio1[USB_AS_IN_INTERFACE_DESCRIPTOR_OFFSET_FREQ + 3*i + 1] = (get_device_to_usb_rate() & 0xff00)>> 8;
         cfgDesc_Audio1[USB_AS_IN_INTERFACE_DESCRIPTOR_OFFSET_FREQ + 3*i + 2] = (get_device_to_usb_rate() & 0xff0000)>> 16;
     }
+    cfgDesc_Audio1[USB_AS_IN_EP_DESCRIPTOR_OFFSET_MAXPACKETSIZE] = ((get_device_to_usb_bit_res() >> 3) * MAX_PACKET_SIZE_MULT_IN_FS) & 0xff; //max packet size
+    cfgDesc_Audio1[USB_AS_IN_EP_DESCRIPTOR_OFFSET_MAXPACKETSIZE + 1] = (((get_device_to_usb_bit_res() >> 3)  * MAX_PACKET_SIZE_MULT_IN_FS) & 0xff00) >> 8; //max packet size
 
-    for(i=0;i<num_of_usb_descriptor_freq;i++)
+#endif // NUM_USB_CHAN_IN
+
+#if( 0 < NUM_USB_CHAN_OUT )
+
+    cfgDesc_Audio1[USB_AS_OUT_INTERFACE_DESCRIPTOR_OFFSET_SUB_FRAME] = get_usb_to_device_bit_res() >> 3; //sub frame rate = bit rate /8
+    cfgDesc_Audio1[USB_AS_OUT_INTERFACE_DESCRIPTOR_OFFSET_SUB_FRAME + 1] = (get_usb_to_device_bit_res() & 0xff); //bit resolution
+
+    for(int i=0;i<num_of_usb_descriptor_freq;i++)
     {
         cfgDesc_Audio1[USB_AS_OUT_INTERFACE_DESCRIPTOR_OFFSET_FREQ + 3*i] = get_usb_to_device_rate() & 0xff;
         cfgDesc_Audio1[USB_AS_OUT_INTERFACE_DESCRIPTOR_OFFSET_FREQ + 3*i + 1] = (get_usb_to_device_rate() & 0xff00)>> 8;
         cfgDesc_Audio1[USB_AS_OUT_INTERFACE_DESCRIPTOR_OFFSET_FREQ + 3*i + 2] = (get_usb_to_device_rate() & 0xff0000)>> 16;
     }
 
-    cfgDesc_Audio1[USB_AS_IN_EP_DESCRIPTOR_OFFSET_MAXPACKETSIZE] = ((get_device_to_usb_bit_res() >> 3) * MAX_PACKET_SIZE_MULT_IN_FS) & 0xff; 	//max packet size
-    cfgDesc_Audio1[USB_AS_IN_EP_DESCRIPTOR_OFFSET_MAXPACKETSIZE + 1] = (((get_device_to_usb_bit_res() >> 3)  * MAX_PACKET_SIZE_MULT_IN_FS) & 0xff00) >> 8;		//max packet size
 
-    cfgDesc_Audio1[USB_AS_OUT_EP_DESCRIPTOR_OFFSET_MAXPACKETSIZE] = ((get_usb_to_device_bit_res() >> 3) * MAX_PACKET_SIZE_MULT_OUT_FS) & 0xff; 	//max packet size
-    cfgDesc_Audio1[USB_AS_OUT_EP_DESCRIPTOR_OFFSET_MAXPACKETSIZE + 1] = (((get_usb_to_device_bit_res() >> 3)  * MAX_PACKET_SIZE_MULT_OUT_FS) & 0xff00) >> 8;		//max packet size
+    cfgDesc_Audio1[USB_AS_OUT_EP_DESCRIPTOR_OFFSET_MAXPACKETSIZE] = ((get_usb_to_device_bit_res() >> 3) * MAX_PACKET_SIZE_MULT_OUT_FS) & 0xff; //max packet size
+    cfgDesc_Audio1[USB_AS_OUT_EP_DESCRIPTOR_OFFSET_MAXPACKETSIZE + 1] = (((get_usb_to_device_bit_res() >> 3)  * MAX_PACKET_SIZE_MULT_OUT_FS) & 0xff00) >> 8; //max packet size
+#endif // NUM_USB_CHAN_OUT
 
-#endif
+#endif // XUA_USB_DESCRIPTOR_OVERWRITE_RATE_RES
 
 #if( 0 < HID_CONTROLS )
     hidReportInit();

lib_xua/src/core/endpoint0/xua_ep0_descriptors.h

@@ -1,4 +1,4 @@
-// Copyright 2011-2021 XMOS LIMITED.
+// Copyright 2011-2022 XMOS LIMITED.
 // This Software is subject to the terms of the XMOS Public Licence: Version 1.
 /**
  * @file    xua_ep0_descriptors.h
@@ -1284,7 +1284,7 @@ USB_Config_Descriptor_Audio2_t cfgDesc_Audio2=
             .bSourceID                 = FU_USBIN, /* 7  bSourceID Connect to analog input feature unit*/
 #else
 
-            .bSourceID                 = ID_IT_USB,/* 7  bSourceID Connect to analog input term */
+            .bSourceID                 = ID_IT_AUD,/* 7  bSourceID Connect to analog input term */
 #endif
             .bCSourceID                = ID_CLKSEL,
             .bmControls                = 0x0000,
@@ -2331,9 +2331,10 @@ const unsigned num_freqs_a1 = MAX(3, (0
 #define CFG_TOTAL_LENGTH_A1         (18 + AC_TOTAL_LENGTH + (INPUT_INTERFACES_A1 * (49 + num_freqs_a1 * 3)) + (OUTPUT_INTERFACES_A1 * (49 + num_freqs_a1 * 3)) + CONTROL_INTERFACE_BYTES + DFU_INTERFACE_BYTES + HID_INTERFACE_BYTES)
 #endif
 
+#define INTERFACE_DESCRIPTOR_BYTES		(9)
+
 #ifdef XUA_USB_DESCRIPTOR_OVERWRITE_RATE_RES
 	#define AS_INTERFACE_BYTES		(7)
-	#define INTERFACE_DESCRIPTOR_BYTES		(9)
 	#define AS_FORMAT_TYPE_BYTES		(17)
 	#define USB_AS_IN_INTERFACE_DESCRIPTOR_OFFSET_SUB_FRAME		(18 + AC_TOTAL_LENGTH + (OUTPUT_INTERFACES_A1 * (49 + num_freqs_a1 * 3)) + (2*INTERFACE_DESCRIPTOR_BYTES) + (AS_INTERFACE_BYTES) + 5)
 	#define USB_AS_OUT_INTERFACE_DESCRIPTOR_OFFSET_SUB_FRAME	(18 + AC_TOTAL_LENGTH + (2*INTERFACE_DESCRIPTOR_BYTES) + (AS_INTERFACE_BYTES) + 5)

lib_xua/src/core/endpoint0/xua_ep0_uacreqs.xc

@@ -1,4 +1,4 @@
-// Copyright 2011-2021 XMOS LIMITED.
+// Copyright 2011-2022 XMOS LIMITED.
 // This Software is subject to the terms of the XMOS Public Licence: Version 1.
 /**
  * @brief   Implements relevant requests from the USB Audio 2.0 Specification
@@ -341,7 +341,7 @@ int AudioClassRequests_2(XUD_ep ep0_out, XUD_ep ep0_in, USB_SetupPacket_t &sp, c
 
                                         setG_curSamFreqMultiplier(g_curSamFreq/(newMasterClock/512));
 #endif
-#if ADAT_RX 
+#if ADAT_RX
                                         /* Configure ADAT SMUX based on sample rate */
                                         outuint(c_clk_ctl, SET_SMUX);
                                         if(g_curSamFreq < 88200)
@@ -1095,7 +1095,7 @@ int AudioEndpointRequests_1(XUD_ep ep0_out, XUD_ep ep0_in, USB_SetupPacket_t &sp
                 /* Check Control Selector */
                 unsigned short controlSelector = sp.wValue>>8;
 
-                if((result != XUD_GetBuffer(ep0_out, (buffer, unsigned char[]), length)) != XUD_RES_OKAY)
+                if((result = XUD_GetBuffer(ep0_out, (buffer, unsigned char[]), length)) != XUD_RES_OKAY)
                 {
                     return result;
                 }
@@ -1280,6 +1280,9 @@ XUD_Result_t AudioClassRequests_1(XUD_ep ep0_out, XUD_ep ep0_in, USB_SetupPacket
             buffer[0] = (VOLUME_RES_MIXER & 0xff);
             buffer[1] = (VOLUME_RES_MIXER >> 8);
             return XUD_DoGetRequest(ep0_out, ep0_in, buffer, 2, sp.wLength);
+
+        default:
+            break;
     }
 #endif
     return XUD_RES_ERR;

lib_xua/src/core/main.xc

@@ -134,7 +134,7 @@ on tile[AUDIO_IO_TILE] : buffered out port:32 p_bclk        = PORT_I2S_BCLK;
 
 on tile[AUDIO_IO_TILE] :  in port p_mclk_in                 = PORT_MCLK_IN;
 
-#if XUA_USB_EN 
+#if XUA_USB_EN
 on tile[XUD_TILE] : in port p_for_mclk_count                = PORT_MCLK_COUNT;
 #endif
 
@@ -635,7 +635,7 @@ int main()
 #endif /* XUA_USB_EN */
         }
 
-        on tile[AUDIO_IO_TILE]: 
+        on tile[AUDIO_IO_TILE]:
         {
             usb_audio_io(c_mix_out
 #if (XUA_SPDIF_TX_EN) && (SPDIF_TX_TILE != AUDIO_IO_TILE)
@@ -721,11 +721,11 @@ int main()
 #endif
 
 #ifndef PDM_RECORD
-#if (XUA_NUM_PDM_MICS > 0) 
+#if (XUA_NUM_PDM_MICS > 0)
 #if (PDM_TILE != AUDIO_IO_TILE)
         /* PDM Mics running on a separate to AudioHub */
         on stdcore[PDM_TILE]:
-        { 
+        {
             xua_pdm_mic_config(p_pdm_mclk, p_pdm_clk, p_pdm_mics, clk_pdm);
             xua_pdm_mic(c_ds_output, p_pdm_mics);
         }

lib_xua/src/core/mixer/mixer.xc

@@ -1,7 +1,5 @@
-// Copyright 2011-2021 XMOS LIMITED.
+// Copyright 2011-2022 XMOS LIMITED.
 // This Software is subject to the terms of the XMOS Public Licence: Version 1.
-
-
 #include <xs1.h>
 #include <print.h>
 #include "xua.h"
@@ -15,7 +13,6 @@
 /* FAST_MIXER has a bit of a nasty implentation but is more effcient */
 #define FAST_MIXER 1
 
-
 //#ifdef OUT_VOLUME_IN_MIXER
 static unsigned int multOut_array[NUM_USB_CHAN_OUT + 1];
 static xc_ptr multOut;
@@ -252,51 +249,53 @@ static inline void GetSamplesFromHost(chanend c)
 #pragma unsafe arrays
 static inline void GiveSamplesToDevice(chanend c, xc_ptr ptr, xc_ptr multOut)
 {
-    {
+#if(NUM_USB_CHAN_OUT == 0)
+    outuint(c, 0);
+#else
 #pragma loop unroll
-        for (int i=0; i<NUM_USB_CHAN_OUT; i++)
-        {
-            int sample, x;
+    for (int i=0; i<NUM_USB_CHAN_OUT; i++)
+    {
+        int sample, x;
 #if defined(OUT_VOLUME_IN_MIXER) && defined(OUT_VOLUME_AFTER_MIX)
-            int mult;
-            int h;
-            unsigned l;
+        int mult;
+        int h;
+        unsigned l;
 #endif
-            int index;
+        int index;
 
 #if MAX_MIX_COUNT > 0
-            /* If mixer turned on sort out the channel mapping */
+        /* If mixer turned on sort out the channel mapping */
 
-            /* Read pointer to sample from the map */
-            read_via_xc_ptr_indexed(index, ptr, i);
+        /* Read pointer to sample from the map */
+        read_via_xc_ptr_indexed(index, ptr, i);
 
-            /* Read the actual sample value */
-            read_via_xc_ptr_indexed(sample, samples, index);
+        /* Read the actual sample value */
+        read_via_xc_ptr_indexed(sample, samples, index);
 #else
-            unsafe
-            {
-                /* Read the actual sample value */
-                sample = ptr_samples[i];
-            }
+        unsafe
+        {
+            /* Read the actual sample value */
+            sample = ptr_samples[i];
+        }
 #endif
 
 #if defined(OUT_VOLUME_IN_MIXER) && defined(OUT_VOLUME_AFTER_MIX)
-            /* Do volume control processing */
+        /* Do volume control processing */
 #warning OUT Vols in mixer, AFTER mix & map
-            read_via_xc_ptr_indexed(mult, multOut, i);
-            {h, l} = macs(mult, sample, 0, 0);
-            h<<=3;              // Shift used to be done in audio thread but now done here incase of 32bit support
+        read_via_xc_ptr_indexed(mult, multOut, i);
+        {h, l} = macs(mult, sample, 0, 0);
+        h<<=3;              // Shift used to be done in audio thread but now done here incase of 32bit support
 #error
 #if (STREAM_FORMAT_OUTPUT_RESOLUTION_32BIT_USED == 1)
-            h |= (l >>29)& 0x7; // Note: This step is not required if we assume sample depth is 24bit (rather than 32bit)
-                            // Note: We need all 32bits for Native DSD
+        h |= (l >>29)& 0x7; // Note: This step is not required if we assume sample depth is 24bit (rather than 32bit)
+                        // Note: We need all 32bits for Native DSD
 #endif
-            outuint(c, h);
+        outuint(c, h);
 #else
-            outuint(c, sample);
+        outuint(c, sample);
 #endif
-        }
     }
+#endif
 }
 
 #pragma unsafe arrays
@@ -367,7 +366,7 @@ static void mixer1(chanend c_host, chanend c_mix_ctl, chanend c_mixer2)
         /* Forward on Request for data to decouple thread */
         outuint(c_host, request);
 
-#if (MAX_MIX_COUNT > 0) 
+#if (MAX_MIX_COUNT > 0)
         /* Sync */
         outuint(c_mixer2, 0);
 #endif
@@ -544,8 +543,8 @@ static void mixer1(chanend c_host, chanend c_mix_ctl, chanend c_mixer2)
             /* Sync with mixer 2 (once it has swapped samples with audiohub) */
             outuint(c_mixer2, 0);
             inuint(c_mixer2);
-           
-            /* Do the mixing */ 
+
+            /* Do the mixing */
 #ifdef FAST_MIXER
             mixed = doMix0(samples, mix_mult_slice(0));
 #else
@@ -603,9 +602,6 @@ static void mixer1(chanend c_host, chanend c_mix_ctl, chanend c_mixer2)
             }
 #else       /* IF MAX_MIX_COUNT > 0 */
             /* No mixes, this thread runs on its own doing just volume */
-#if(NUM_USB_CHAN_OUT == 0)
-            outuint(c_mixer2, 0);
-#endif
             GiveSamplesToDevice(c_mixer2, samples_to_device_map, multOut);
             GetSamplesFromDevice(c_mixer2);
             GetSamplesFromHost(c_host);
@@ -677,8 +673,8 @@ static void mixer2(chanend c_mixer1, chanend c_audio)
         {
             GiveSamplesToDevice(c_audio, samples_to_device_map, multOut);
             GetSamplesFromDevice(c_audio);
-           
-            /* Sync with mixer 1 (once it has swapped samples with the buffering sub-system) */ 
+
+            /* Sync with mixer 1 (once it has swapped samples with the buffering sub-system) */
             inuint(c_mixer1);
             outuint(c_mixer1, 0);
 
@@ -697,7 +693,7 @@ static void mixer2(chanend c_mixer1, chanend c_audio)
 #endif
 #endif
 
-            
+
 #if (MAX_FREQ > 96000)
             /* Fewer mixes when running higher than 96kHz */
             if (!mixer2_mix2_flag)

lib_xua/src/core/pdm_mics/pdm_mic.xc

@@ -22,7 +22,7 @@
 #define MAX_DECIMATION_FACTOR (96000/(MIN_FREQ/AUD_TO_MICS_RATIO))
 
 /* Build time sized microphone delay line */
-#ifndef MIC_BUFFER_DEPTH 
+#ifndef MIC_BUFFER_DEPTH
 #define MIC_BUFFER_DEPTH 1
 #endif
 
@@ -229,7 +229,7 @@ void xua_pdm_mic_config(in port p_pdm_mclk, in port p_pdm_clk, buffered in port:
     unsigned micDiv = MCLK_48/3072000;
 
     configure_clock_src_divide(clk_pdm, p_pdm_mclk, micDiv/2);
-    
+
     configure_port_clock_output(p_pdm_clk, clk_pdm);
     configure_in_port(p_pdm_mics, clk_pdm);
     start_clock(clk_pdm);
@@ -243,7 +243,7 @@ void xua_pdm_mic(streaming chanend c_ds_output[2], buffered in port:32 p_pdm_mic
 #else
     #define c_4x_pdm_mic_1 null
 #endif
-  
+
     par
     {
         mic_array_pdm_rx(p_pdm_mics, c_4x_pdm_mic_0, c_4x_pdm_mic_1);

lib_xua/src/core/support/reboot.xc

@@ -22,7 +22,7 @@ static void reset_tile(unsigned const tileId)
     read_sswitch_reg(tileId, 6, pllVal);
     pllVal &= PLL_MASK;
     write_sswitch_reg_no_ack(tileId, 6, pllVal);
-}        
+}
 
 /* Reboots XMOS device by writing to the PLL config register
  * Note - resetting is per *node* not tile
@@ -42,12 +42,12 @@ void device_reboot(void)
 
     tileArrayLength = sizeof(tile)/sizeof(tileref);
 
-    /* Note - we could be in trouble if this doesn't return 0/1 since 
+    /* Note - we could be in trouble if this doesn't return 0/1 since
      * this code doesn't properly handle any network topology other than a
-     * simple line 
+     * simple line
      */
     /* Find tile index of the local tile ID */
-    for(int tileNum = 0;  tileNum<tileArrayLength; tileNum++) 
+    for(int tileNum = 0;  tileNum<tileArrayLength; tileNum++)
     {
         if (get_tile_id(tile[tileNum]) == localTileId)
         {

lib_xua/src/hid/hid.xc

@@ -1,4 +1,4 @@
-// Copyright 2019-2021 XMOS LIMITED.
+// Copyright 2019-2022 XMOS LIMITED.
 // This Software is subject to the terms of the XMOS Public Licence: Version 1.
 #include <stdint.h>
 #include <xs1.h>
@@ -9,6 +9,10 @@
 #include "xua_hid.h"
 #include "xua_hid_report.h"
 
+#define DEBUG_UNIT HID_XC
+#define DEBUG_PRINT_ENABLE_HID_XC 0
+#include "debug_print.h"
+
 #if( 0 < HID_CONTROLS )
 static unsigned     HidCalcNewReportTime( const unsigned currentPeriod, const unsigned reportTime, const unsigned reportToSetIdleInterval, const unsigned newPeriod );
 static unsigned     HidCalcReportToSetIdleInterval( const unsigned reportTime );
@@ -37,26 +41,26 @@ XUD_Result_t HidInterfaceClassRequests(
 
 unsigned HidIsSetIdleSilenced( const unsigned id )
 {
-  unsigned isSilenced = hidIsIdleActive( id );
+ unsigned isSilenced = hidIsIdleActive( id );
 
-  if( !isSilenced ) {
-    unsigned currentTime;
-    // Use inline assembly to access the time without creating a side-effect.
-    // The mapper complains if the time comes from an XC timer because this function is called in the guard of a select case.
-    // Appearently the use of a timer creates a side-effect that prohibits the operation of the select functionality.
-    asm volatile( "gettime %0" : "=r" ( currentTime ));
-    isSilenced = ( 0U == hidGetReportPeriod( id ) || ( timeafter( hidGetNextReportTime( id ), currentTime )));
-  }
+ if( !isSilenced ) {
+   unsigned currentTime;
+   // Use inline assembly to access the time without creating a side-effect.
+   // The mapper complains if the time comes from an XC timer because this function is called in the guard of a select case.
+   // Appearently the use of a timer creates a side-effect that prohibits the operation of the select functionality.
+   asm volatile( "gettime %0" : "=r" ( currentTime ));
+   isSilenced = ( 0U == hidGetReportPeriod( id ) || ( timeafter( hidGetNextReportTime( id ), currentTime )));
+ }
 
-  return isSilenced;
+ return isSilenced;
 }
 
 /**
  * \brief Calculate the timer value for sending the next HID Report.
  *
  *  With regard to Section 7.2.4 Set_Idle Request of the USB Device Class Definition for Human
- *    Interface Devices (HID) Version 1.11, I've interpreted 'currently executing period' and
- *    'current period' to mean the previously established Set Idle duration if one has been
+ *    Interface Devices (HID) Version 1.11, 'currently executing period' and 'current period' have
+ *    been interpreted to mean the previously established Set Idle duration if one has been
  *    established or the polling interval from the HID Report Descriptor if a Set Idle duration
  *    has not been established.
  *
@@ -147,8 +151,6 @@ static void HidUpdateReportPeriod( unsigned reportId, unsigned reportDuration )
     unsigned nextReportTime = HidCalcNewReportTime( currentPeriod, reportTime, reportToSetIdleInterval, reportDuration * MS_IN_TICKS );
     hidSetNextReportTime( reportId, nextReportTime );
     currentPeriod = reportDuration * MS_IN_TICKS;
-  } else {
-    currentPeriod = ENDPOINT_INT_INTERVAL_IN_HID * MS_IN_TICKS;
   }
 
   hidSetReportPeriod( reportId, currentPeriod );

lib_xua/src/hid/hid_report.c

@@ -1,5 +1,8 @@
-// Copyright 2021 XMOS LIMITED.
+// Copyright 2021-2022 XMOS LIMITED.
 // This Software is subject to the terms of the XMOS Public Licence: Version 1.
+#include "xua_conf_full.h"
+#if( 0 < HID_CONTROLS )
+
 #include <assert.h>
 #include <stddef.h>
 #include <stdio.h>
@@ -9,15 +12,20 @@
 #include "descriptor_defs.h"
 #include "xua_hid_report.h"
 #include "hid_report_descriptor.h"
+#include "swlock.h"
 
 
 #define HID_REPORT_ITEM_LOCATION_SIZE ( 1 )
 #define HID_REPORT_DESCRIPTOR_ITEM_COUNT ( sizeof hidReportDescriptorItems / sizeof ( USB_HID_Short_Item_t* ))
 #define HID_REPORT_DESCRIPTOR_MAX_LENGTH ( HID_REPORT_DESCRIPTOR_ITEM_COUNT * \
                                            ( sizeof ( USB_HID_Short_Item_t ) - HID_REPORT_ITEM_LOCATION_SIZE ))
+
+swlock_t hidStaticVarLock = SWLOCK_INITIAL_VALUE;
+
 /*
  * Each element in s_hidChangePending corresponds to an element in hidReports.
  */
+
 static unsigned s_hidChangePending[ HID_REPORT_COUNT ];
 static unsigned char s_hidReportDescriptor[ HID_REPORT_DESCRIPTOR_MAX_LENGTH ];
 static size_t s_hidReportDescriptorLength;
@@ -131,33 +139,42 @@ static unsigned hidGetUsagePage( const unsigned id );
  */
 static size_t hidTranslateItem( const USB_HID_Short_Item_t* inPtr, unsigned char** outPtrPtr );
 
+unsigned hidIsReportIdInUse ( void ) {
+    return !hidIsReportIdValid(0U);
+}
 
 void hidCalcNextReportTime( const unsigned id )
 {
+    swlock_acquire(&hidStaticVarLock);
     for( size_t idx = 0U; idx < HID_REPORT_COUNT; ++idx ) {
         if( id == hidGetElementReportId( hidReports[ idx ]->location )) {
             s_hidNextReportTime[ idx ] = s_hidReportTime[ idx ] + s_hidCurrentPeriod[ idx ];
         }
     }
+    swlock_release(&hidStaticVarLock);
 }
 
 void hidCaptureReportTime( const unsigned id, const unsigned time )
 {
+    swlock_acquire(&hidStaticVarLock);
     for( size_t idx = 0U; idx < HID_REPORT_COUNT; ++idx ) {
         if( id == hidGetElementReportId( hidReports[ idx ]->location )) {
             s_hidReportTime[ idx ] = time;
         }
     }
+    swlock_release(&hidStaticVarLock);
 }
 
 void hidClearChangePending( const unsigned id )
 {
+    swlock_acquire(&hidStaticVarLock);
     for( size_t idx = 0U; idx < HID_REPORT_COUNT; ++idx) {
         if(( id == 0U ) || ( id == hidGetElementReportId( hidReports[ idx ]->location ))) {
             s_hidChangePending[ idx ] = 0U;
             break;
         }
     }
+    swlock_release(&hidStaticVarLock);
 }
 
 static unsigned hidGetElementBitLocation( const unsigned short location )
@@ -203,74 +220,56 @@ static unsigned hidGetItemType( const unsigned char header )
 }
 
 unsigned hidGetNextReportTime( const unsigned id ) {
+    swlock_acquire(&hidStaticVarLock);
     unsigned retVal = 0U;
 
-    for( size_t idx = 0U; idx < HID_REPORT_COUNT; ++idx ) {
+    for ( size_t idx = 0U; idx < HID_REPORT_COUNT; ++idx ) {
         if( id == hidGetElementReportId( hidReports[ idx ]->location )) {
             retVal = s_hidNextReportTime[ idx ];
         }
-    }
+     }
+    swlock_release(&hidStaticVarLock);
     return retVal;
 }
 
-unsigned hidIsReportDescriptorPrepared( void )
-{
-    return s_hidReportDescriptorPrepared;
-}
-
 unsigned char* hidGetReportDescriptor( void )
 {
     unsigned char* retVal = NULL;
+    swlock_acquire(&hidStaticVarLock);
 
     if( s_hidReportDescriptorPrepared ) {
         retVal = s_hidReportDescriptor;
     }
 
+    swlock_release(&hidStaticVarLock);
     return retVal;
 }
 
 size_t hidGetReportDescriptorLength( void )
 {
+    swlock_acquire(&hidStaticVarLock);
     size_t retVal = ( s_hidReportDescriptorPrepared ) ? s_hidReportDescriptorLength : 0U;
+    swlock_release(&hidStaticVarLock);
     return retVal;
 }
 
 unsigned hidGetReportIdLimit ( void ) {
     unsigned retVal = 0U;
 
+    swlock_acquire(&hidStaticVarLock);
     for( size_t idx = 0U; idx < HID_REPORT_COUNT; ++idx ) {
         unsigned reportId = hidGetElementReportId( hidReports[ idx ]->location );
         if( reportId >= retVal ) {
             retVal = reportId + 1;
         }
     }
-    return retVal;
-}
-
-unsigned hidIsReportIdInUse ( void ) {
-    if ( hidGetElementReportId( hidReports[ 0 ]->location ) ) {
-        return 1;
-    }
-    return 0;
-}
-
-unsigned hidIsReportIdValid ( unsigned id ) {
-    size_t retVal = 0;
-
-    for( size_t idx = 0U; idx < HID_REPORT_COUNT; ++idx ) {
-        unsigned reportId = hidGetElementReportId( hidReports[ idx ]->location );
-        if( reportId == id ) {
-            retVal = 1;
-            break;
-        }
-    }
-
+    swlock_release(&hidStaticVarLock);
     return retVal;
 }
 
 unsigned hidGetNextValidReportId ( unsigned idPrev ) {
     size_t retIndex = 0;
-
+    swlock_acquire(&hidStaticVarLock);
     for( size_t idx = 0U; idx < HID_REPORT_COUNT; ++idx ) {
         unsigned reportId = hidGetElementReportId( hidReports[ idx ]->location );
         if( reportId == idPrev ) {
@@ -279,7 +278,9 @@ unsigned hidGetNextValidReportId ( unsigned idPrev ) {
         }
     }
 
-    return hidGetElementReportId( hidReports[ retIndex ]->location );
+    unsigned retVal = hidGetElementReportId( hidReports[ retIndex ]->location );
+    swlock_release(&hidStaticVarLock);
+    return retVal;
 }
 
 #define HID_CONFIGURABLE_ELEMENT_COUNT ( sizeof hidConfigurableElements / sizeof ( USB_HID_Report_Element_t* ))
@@ -294,7 +295,10 @@ unsigned hidGetReportItem(
 {
     unsigned retVal = HID_STATUS_BAD_ID;
     for( size_t elementIdx = 0U; elementIdx < HID_CONFIGURABLE_ELEMENT_COUNT; ++elementIdx ) {
+        swlock_acquire(&hidStaticVarLock);
         USB_HID_Report_Element_t element = *hidConfigurableElements[ elementIdx ];
+        swlock_release(&hidStaticVarLock);
+
         unsigned bBit  = hidGetElementBitLocation( element.location );
         unsigned bByte = hidGetElementByteLocation( element.location );
         unsigned bId   = hidGetElementReportId( element.location );
@@ -320,6 +324,7 @@ unsigned hidGetReportItem(
 
 size_t hidGetReportLength( const unsigned id )
 {
+    swlock_acquire(&hidStaticVarLock);
     size_t retVal = 0U;
     if( s_hidReportDescriptorPrepared ) {
         for( size_t idx = 0U; idx < HID_REPORT_COUNT; ++idx ) {
@@ -328,11 +333,13 @@ size_t hidGetReportLength( const unsigned id )
             }
         }
     }
+    swlock_release(&hidStaticVarLock);
     return retVal;
 }
 
 unsigned hidGetReportPeriod( const unsigned id )
 {
+    swlock_acquire(&hidStaticVarLock);
     unsigned retVal = 0U;
     for( size_t idx = 0U; idx < HID_REPORT_COUNT; ++idx) {
         if( id == hidGetElementReportId( hidReports[ idx ]->location )) {
@@ -340,10 +347,13 @@ unsigned hidGetReportPeriod( const unsigned id )
             break;
         }
     }
+    swlock_release(&hidStaticVarLock);
     return retVal;
 }
 
-unsigned hidGetReportTime( const unsigned id ) {
+unsigned hidGetReportTime( const unsigned id )
+{
+    swlock_acquire(&hidStaticVarLock);
     unsigned retVal = 0U;
 
     for( size_t idx = 0U; idx < HID_REPORT_COUNT; ++idx ) {
@@ -351,55 +361,85 @@ unsigned hidGetReportTime( const unsigned id ) {
             retVal = s_hidReportTime[ idx ];
         }
     }
+
+    swlock_release(&hidStaticVarLock);
     return retVal;
 }
 
 static unsigned hidGetUsagePage( const unsigned id )
 {
     unsigned retVal = 0U;
+    swlock_acquire(&hidStaticVarLock);
+
     for( size_t idx = 0U; idx < HID_REPORT_COUNT; ++idx) {
         if( id == hidGetElementReportId( hidReports[ idx ]->location )) {
             retVal = hidReports[ idx ]->item.data[ 0 ];
             break;
         }
     }
+
+    swlock_release(&hidStaticVarLock);
     return retVal;
 }
 
 unsigned hidIsChangePending( const unsigned id )
 {
     unsigned retVal = 0U;
+    swlock_acquire(&hidStaticVarLock);
+
     for( size_t idx = 0U; idx < HID_REPORT_COUNT; ++idx) {
-        if( id == 0U && s_hidChangePending[ idx ] != 0U ) {
-            retVal = 1;
-        } else if( id == hidGetElementReportId( hidReports[ idx ]->location )) {
+        if( id == hidGetElementReportId( hidReports[ idx ]->location )) {
             retVal  = ( s_hidChangePending[ idx ] != 0U );
             break;
         }
     }
+
+  swlock_release(&hidStaticVarLock);
   return retVal;
 }
 
 unsigned hidIsIdleActive( const unsigned id )
 {
     unsigned retVal = 0U;
-    if( 0U == id ) {
-        retVal = 1U;
-    }
 
+    swlock_acquire(&hidStaticVarLock);
     for( size_t idx = 0U; idx < HID_REPORT_COUNT; ++idx) {
-        if( id == 0U ) {
-            retVal &= ( s_hidIdleActive[ idx ] != 0U );
-        } else if( id == hidGetElementReportId( hidReports[ idx ]->location )) {
+        if( id == hidGetElementReportId( hidReports[ idx ]->location )) {
             retVal  = ( s_hidIdleActive[ idx ] != 0U );
             break;
         }
     }
-  return retVal;
+    swlock_release(&hidStaticVarLock);
+    return retVal;
+}
+
+unsigned hidIsReportDescriptorPrepared( void )
+{
+    swlock_acquire(&hidStaticVarLock);
+    unsigned retVal = s_hidReportDescriptorPrepared;
+    swlock_release(&hidStaticVarLock);
+    return retVal;
+}
+
+unsigned hidIsReportIdValid ( unsigned id ) {
+    size_t retVal = 0;
+
+    swlock_acquire(&hidStaticVarLock);
+    for( size_t idx = 0U; idx < HID_REPORT_COUNT; ++idx ) {
+        unsigned reportId = hidGetElementReportId( hidReports[ idx ]->location );
+        if( reportId == id ) {
+            retVal = 1;
+            break;
+        }
+    }
+
+    swlock_release(&hidStaticVarLock);
+    return retVal;
 }
 
 void hidPrepareReportDescriptor( void )
 {
+    swlock_acquire(&hidStaticVarLock);
     if( !s_hidReportDescriptorPrepared ) {
         s_hidReportDescriptorLength = 0U;
         unsigned char* ptr = s_hidReportDescriptor;
@@ -410,49 +450,60 @@ void hidPrepareReportDescriptor( void )
 
         s_hidReportDescriptorPrepared = 1U;
     }
+    swlock_release(&hidStaticVarLock);
 }
 
 void hidReportInit( void )
 {
+    swlock_acquire(&hidStaticVarLock);
     for( unsigned idx = 0U; idx < HID_REPORT_COUNT; ++idx ) {
-        s_hidCurrentPeriod[ idx ] = ENDPOINT_INT_INTERVAL_IN_HID * MS_IN_TICKS;
+        s_hidCurrentPeriod[ idx ] = ENDPOINT_INT_INTERVAL_IN_HID * MS_IN_TICKS * HID_REPORT_COUNT;
     }
     memset( s_hidIdleActive, 0, sizeof( s_hidIdleActive ) );
     memset( s_hidChangePending, 0, sizeof( s_hidChangePending ) );
+    swlock_release(&hidStaticVarLock);
 }
 
 void hidResetReportDescriptor( void )
 {
+    swlock_acquire(&hidStaticVarLock);
     s_hidReportDescriptorPrepared = 0U;
+    swlock_release(&hidStaticVarLock);
 }
 
 void hidSetChangePending( const unsigned id )
 {
+    swlock_acquire(&hidStaticVarLock);
     for( size_t idx = 0U; idx < HID_REPORT_COUNT; ++idx) {
         if( id == hidGetElementReportId( hidReports[ idx ]->location )) {
             s_hidChangePending[ idx ] = 1U;
             break;
         }
     }
+    swlock_release(&hidStaticVarLock);
 }
 
 void hidSetIdle( const unsigned id, const unsigned state )
 {
+    swlock_acquire(&hidStaticVarLock);
     for( size_t idx = 0U; idx < HID_REPORT_COUNT; ++idx) {
         if( id == hidGetElementReportId( hidReports[ idx ]->location )) {
             s_hidIdleActive[ idx ] = ( state != 0U );
             break;
         }
     }
+    swlock_release(&hidStaticVarLock);
 }
 
 void hidSetNextReportTime( const unsigned id, const unsigned time )
 {
+    swlock_acquire(&hidStaticVarLock);
     for( size_t idx = 0U; idx < HID_REPORT_COUNT; ++idx ) {
         if( id == hidGetElementReportId( hidReports[ idx ]->location )) {
             s_hidNextReportTime[ idx ] = time;
         }
     }
+    swlock_release(&hidStaticVarLock);
 }
 
 unsigned hidSetReportItem(
@@ -478,7 +529,10 @@ unsigned hidSetReportItem(
             retVal = HID_STATUS_BAD_HEADER;
         } else {
             for( size_t elementIdx = 0U; elementIdx < HID_CONFIGURABLE_ELEMENT_COUNT; ++elementIdx ) {
+                swlock_acquire(&hidStaticVarLock);
                 USB_HID_Report_Element_t element = *hidConfigurableElements[ elementIdx ];
+                swlock_release(&hidStaticVarLock);
+
                 unsigned bBit  = hidGetElementBitLocation( element.location );
                 unsigned bByte = hidGetElementByteLocation( element.location );
                 unsigned bId   = hidGetElementReportId( element.location );
@@ -501,7 +555,9 @@ unsigned hidSetReportItem(
                                 element.item.data[ dataIdx ] = 0U;
                             }
 
+                            swlock_acquire(&hidStaticVarLock);
                             *hidConfigurableElements[ elementIdx ] = element;
+                            swlock_release(&hidStaticVarLock);
                             retVal = HID_STATUS_GOOD;
                             break;
                         }
@@ -510,18 +566,19 @@ unsigned hidSetReportItem(
             }
         }
     }
-
     return retVal;
 }
 
 void hidSetReportPeriod( const unsigned id, const unsigned period )
 {
+    swlock_acquire(&hidStaticVarLock);
     for( size_t idx = 0U; idx < HID_REPORT_COUNT; ++idx) {
         if( id == hidGetElementReportId( hidReports[ idx ]->location )) {
             s_hidCurrentPeriod[ idx ] = period;
             break;
         }
     }
+    swlock_release(&hidStaticVarLock);
 }
 
 static size_t hidTranslateItem( const USB_HID_Short_Item_t* inPtr, unsigned char** outPtrPtr )
@@ -561,7 +618,7 @@ struct HID_validation_info {
 
 /**
  * @brief Validation step for hidReportValidate, checking the info struct to ensure correctness of Report IDs
- * 
+ *
  * @param info The info struct that has been built by hidReportValidate to check
  * @return unsigned HID_STATUS value
  */
@@ -596,7 +653,7 @@ static unsigned hidReportValidateInfoStructReportIDs( struct HID_validation_info
 
 /**
  * @brief Validation step for hidReportValidate, checking reports are the correct length specified in their location field
- * 
+ *
  * @param info The info struct that has been built by hidReportValidate to check
  * @return unsigned HID_STATUS value
  */
@@ -616,7 +673,7 @@ static unsigned hidReportValidateInfoStructReportLength( struct HID_validation_i
 
 /**
  * @brief Validation step for hidReportValidate, collections are correctly opened and closed
- * 
+ *
  * @param info The info struct that has been built by hidReportValidate to check
  * @return unsigned HID_STATUS value
  */
@@ -631,7 +688,7 @@ static unsigned hidReportValidateInfoStructCollections( struct HID_validation_in
 /**
  * @brief Validation step for hidReportValidate, High level - Checks the summarised information in the info struct by calling
  * the subroutines for checking.
- * 
+ *
  * @param info The info struct that has been built by hidReportValidate to check
  * @return unsigned HID_STATUS value
  */
@@ -648,7 +705,7 @@ static unsigned hidReportValidateInfoStruct( struct HID_validation_info *info )
 
 /**
  * @brief Preparation step for hidReportValidate, Adds a report ID field into the information struct for validation
- * 
+ *
  * @param info The info struct being built by hidReportValidate
  * @param item The ReportId item being added
  * @return unsigned HID_STATUS value
@@ -686,7 +743,7 @@ static unsigned hidReportValidateAddReportId( struct HID_validation_info *info,
 
 /**
  * @brief Preparation step for hidReportValidate, Adds a Usage Page field into the information struct for validation
- * 
+ *
  * @param info The info struct being built by hidReportValidate
  * @param item The UsagePage item being added
  * @return unsigned HID_STATUS value
@@ -718,7 +775,7 @@ static unsigned hidReportValidateAddUsagePageItem( struct HID_validation_info *i
 
 /**
  * @brief Preparation step for hidReportValidate, Adds a Usage field into the information struct for validation
- * 
+ *
  * @param info The info struct being built by hidReportValidate
  * @param item The Usage item being added
  * @return unsigned HID_STATUS value
@@ -796,4 +853,6 @@ unsigned hidReportValidate( void )
     } else {
         return hidReportValidateInfoStruct( &info );
     }
-}
+}
+
+#endif // ( 0 < HID_CONTROLS )

lib_xua/src/hid/xua_hid.h

@@ -1,4 +1,4 @@
-// Copyright 2019-2021 XMOS LIMITED.
+// Copyright 2019-2022 XMOS LIMITED.
 // This Software is subject to the terms of the XMOS Public Licence: Version 1.
 
 /**

lib_xua/src/hid/xua_hid_report.h

@@ -1,4 +1,4 @@
-// Copyright 2021 XMOS LIMITED.
+// Copyright 2021-2022 XMOS LIMITED.
 // This Software is subject to the terms of the XMOS Public Licence: Version 1.
 
 /**
@@ -48,7 +48,7 @@
 
 /**
  * @brief Helper macro to configure the location field of USB_HID_Report_Element_t.
- * 
+ *
  * @param id   The report ID that this element is within.
  * @param len  (only relevant for the usage_page elements in hidReports) The length
  *             of the report under this report ID.
@@ -63,7 +63,7 @@
 
 /**
  * @brief Helper macro to configure the header field of USB_HID_Short_Item_t
- * 
+ *
  * @param size The size of the report descriptor item (valid values: 0, 1, 2)
  * @param type The type of the report descriptor item
  * @param tag  The tag
@@ -113,6 +113,45 @@ typedef struct
     unsigned short location;
 } USB_HID_Report_Element_t;
 
+/**
+ *  \brief Calculate the next time to respond with a HID Report.
+ *
+ *  If the USB Host has previously sent a valid HID Set_Idle request with
+ *    a duration of zero or greater than the default reporting interval,
+ *    the device sends HID Reports periodically or when the value of the
+ *    payload has changed.
+ *
+ *  This function calculates the time for sending the next periodic
+ *    HID Report.
+ *
+ * Parameters:
+ *
+ *  @param[in]  id  The identifier for the HID Report (see 5.6, 6.2.2.7, 8.1 and 8.2)
+ *                  A value of zero means the application does not use Report IDs.
+ */
+void hidCalcNextReportTime( const unsigned id );
+
+/**
+ *  \brief Capture the time of sending the current HID Report.
+ *
+ *  If the USB Host has previously sent a valid HID Set_Idle request with
+ *    a duration of zero or greater than the default reporting interval,
+ *    the device sends HID Reports periodically or when the value of the
+ *    payload has changed.
+ *
+ *  This function captures the time when the HID Report was sent so that
+ *    a subsequent call to HidCalNextReportTime() can calculate the time
+ *    to send the next periodic HID Report.
+ *
+ * Parameters:
+ *
+ *  @param[in]  id      The identifier for the HID Report (see 5.6, 6.2.2.7, 8.1 and 8.2)
+ *                      A value of zero means the application does not use Report IDs.
+ *
+ *  @param[in]  time    The time when the HID Report for the given \a id was sent.
+ */
+void hidCaptureReportTime( const unsigned id, const unsigned time );
+
 /**
  *  \brief Register that a previously changed HID Report data has been sent
  *         to the USB Host.
@@ -134,22 +173,24 @@ typedef struct
  *    HID data has been reported to the USB Host.
  *
  *  \warning This function will fail silently if given an id that is not
- *    either the value zero, or a Report ID that is in use.
+ *    either the value zero (in the case that Report IDs are not in use),
+ *    or a Report ID that is in use.
  *
  *  \param[in]  id  A HID Report ID.
- *                  Zero clears the pending status of all Report IDs.
  *                  Use zero if the application does not use Report IDs.
  */
 void hidClearChangePending( const unsigned id );
 
 /**
- * @brief Indicate if the HID Report descriptor has been prepared
+ * @brief Get the next valid report ID - iterator style.
  *
- *  \returns  A Boolean indicating whether the HID Report descriptor has been prepared.
- *  \retval   True  The HID Report descriptor has been prepared.
- *  \retval   False The HID Report descriptor has not been prepared.
+ * This function will loop around and start returning the first report ID again once it has
+ * returned all valid report IDs.
+ *
+ * @param idPrev The previous returned id, or 0 if this is the first call
+ * @return unsigned The next valid report ID.
  */
- unsigned hidIsReportDescriptorPrepared( void );
+unsigned hidGetNextValidReportId ( unsigned idPrev );
 
 /**
  * @brief Get the HID Report descriptor
@@ -190,44 +231,6 @@ size_t hidGetReportDescriptorLength( void );
  */
 unsigned hidGetReportIdLimit ( void );
 
-/**
- * @brief Does the application use Report IDs?
- * 
- * If the application is not using Report IDs, then the id value that is passed around
- * everywhere can just be zero. Otherwise zero is an invalid ID that has a special meaning
- * in some cases (read the documentation for each function).
- * 
- * @return Boolean
- * @retval 1 Report IDs are in use
- * @retval 0 Report IDs are not in use
- */
-unsigned hidIsReportIdInUse ( void );
-
-/**
- * @brief Is the provided report ID valid for passing to other functions.
- * 
- * e.g If Report IDs are not in use, then only 0 will return true.
- * e.g If Report IDs are in use, then 0 will return false and the report IDs that
- *     are in use will return true when passed to thsi function.
- * 
- * @param id  The ID to check
- * @return boolean
- * @retval 0 The report ID is not valid, other functions may fail silently
- * @retval 1 The report ID is valid and can be used as the argument to other functions
- */
-unsigned hidIsReportIdValid ( unsigned id );
-
-/**
- * @brief Get the next valid report ID - iterator style.
- * 
- * This function will loop around and start returning the first report ID again once it has
- * returned all valid report IDs.
- * 
- * @param idPrev The previous returned id, or 0 if this is the first call
- * @return unsigned The next valid report ID.
- */
-unsigned hidGetNextValidReportId ( unsigned idPrev );
-
 /**
  * @brief Get a HID Report descriptor item
  *
@@ -265,45 +268,6 @@ unsigned hidGetReportItem(
     unsigned char data[]);
 #endif
 
-/**
- *  \brief Calculate the next time to respond with a HID Report.
- *
- *  If the USB Host has previously sent a valid HID Set_Idle request with
- *    a duration of zero or greater than the default reporting interval,
- *    the device sends HID Reports periodically or when the value of the
- *    payload has changed.
- *
- *  This function calculates the time for sending the next periodic
- *    HID Report.
- *
- * Parameters:
- *
- *  @param[in]  id  The identifier for the HID Report (see 5.6, 6.2.2.7, 8.1 and 8.2)
- *                  A value of zero means the application does not use Report IDs.
- */
-void hidCalcNextReportTime( const unsigned id );
-
-/**
- *  \brief Capture the time of sending the current HID Report.
- *
- *  If the USB Host has previously sent a valid HID Set_Idle request with
- *    a duration of zero or greater than the default reporting interval,
- *    the device sends HID Reports periodically or when the value of the
- *    payload has changed.
- *
- *  This function captures the time when the HID Report was sent so that
- *    a subsequent call to HidCalNextReportTime() can calculate the time
- *    to send the next periodic HID Report.
- *
- * Parameters:
- *
- *  @param[in]  id      The identifier for the HID Report (see 5.6, 6.2.2.7, 8.1 and 8.2)
- *                      A value of zero means the application does not use Report IDs.
- *
- *  @param[in]  time    The time when the HID Report for the given \a id was sent.
- */
-void hidCaptureReportTime( const unsigned id, const unsigned time );
-
 /**
  * @brief Get the time to send the next HID Report for the given \a id
  *
@@ -378,18 +342,16 @@ unsigned hidGetReportTime( const unsigned id );
  *   whether unreported HID data exists for that Report ID.
  *
  *  \warning This function will return zero if given an id that is not
- *    either the value zero, or a Report ID that is in use.
+ *    either the value zero (in the case that Report IDs are not in use),
+ *    or a Report ID that is in use.
  *
  *  \param[in]  id  A HID Report ID.
- *                  Zero reports the pending status of all Report IDs.
  *                  Use zero if the application does not use Report IDs.
  *
  *  \returns  A Boolean indicating whether the given \a id has a changed
  *              HID Report not yet sent to the USB Host.
  *  \retval   True  The given \a id has changed HID Report data.
- *                  For an \a id of zero, some HID Report has changed data.
  *  \retval   False The given \a id does not have changed HID Report data.
- *                  For an \a id of zero, no HID Report has changed data.
  */
 unsigned hidIsChangePending( const unsigned id );
 
@@ -399,16 +361,48 @@ unsigned hidIsChangePending( const unsigned id );
  * Parameters:
  *
  *  @param[in]  id  The identifier for the HID Report (see 5.6, 6.2.2.7, 8.1 and 8.2)
- *                  A value of zero returns the collective Idle state.
  *
  *  \returns  A Boolean indicating whether the HID Report for the given \a id is idle.
  *  \retval   True  The HID Report is idle.
- *                  For an \a id of zero, all HID Reports are idle.
  *  \retval   False The HID Report is not idle.
- *                  For an \a id of zero, at least one HID Report is not idle.
  */
 unsigned hidIsIdleActive( const unsigned id );
 
+/**
+ * @brief Indicate if the HID Report descriptor has been prepared
+ *
+ *  \returns  A Boolean indicating whether the HID Report descriptor has been prepared.
+ *  \retval   True  The HID Report descriptor has been prepared.
+ *  \retval   False The HID Report descriptor has not been prepared.
+ */
+ unsigned hidIsReportDescriptorPrepared( void );
+
+/**
+ * @brief Does the application use Report IDs?
+ *
+ * If the application is not using Report IDs, then the id value that is passed around
+ * everywhere can just be zero. Otherwise zero is an invalid ID.
+ *
+ * @return Boolean
+ * @retval 1 Report IDs are in use
+ * @retval 0 Report IDs are not in use
+ */
+unsigned hidIsReportIdInUse ( void );
+
+/**
+ * @brief Is the provided report ID valid for passing to other functions.
+ *
+ * e.g If Report IDs are not in use, then only 0 will return true.
+ * e.g If Report IDs are in use, then 0 will return false and the report IDs that
+ *     are in use will return true when passed to this function.
+ *
+ * @param id  The ID to check
+ * @return boolean
+ * @retval 0 The report ID is not valid, other functions may fail silently
+ * @retval 1 The report ID is valid and can be used as the argument to other functions
+ */
+unsigned hidIsReportIdValid ( unsigned id );
+
 /**
  * @brief Prepare the USB HID Report descriptor
  *
@@ -454,7 +448,8 @@ void hidResetReportDescriptor( void );
  *    Host.
  *
  *  \warning This function will fail silently if given an id that is not
- *    either the value zero, or a Report ID that is in use.
+ *    either the value zero (in the case that Report IDs are not in use),
+ *    or a Report ID that is in use.
  *
  *  \param[in]  id  A HID Report ID.
  *                  Use zero if the application does not use Report IDs.
@@ -540,10 +535,10 @@ void hidSetReportPeriod( const unsigned id, const unsigned period );
 /**
  * @brief Development function: Validate the contents of hid_report_descriptor.h for common errors, printing
  * error messages if any issues were found.
- * 
+ *
  * This function is intended for use when developing the contents of hid_report_descriptor.h, which is static,
  * so shouldn't be required for use in a production application.
- * 
+ *
  * @return Validation result
  * @retval HID_STATUS_GOOD                    The validation found no issues with the data structures defined
  *                                            in hid_report_descriptor.h

lib_xua/src/hid/xua_hid_report_descriptor_constants.h

@@ -8,7 +8,7 @@
  * This includes constants from:
  *  - Device Class Definition for Human Interface Devices, version 1.11
  *  - HID Usage Tables for Universal Serial Bus, version 1.22
- * 
+ *
  * This file is incomplete, but can be expanded with new constants as necessary.
  */
 

tests/xua_unit_tests/CMakeLists.txt

@@ -49,6 +49,7 @@ foreach( testsourcefile ${APP_SOURCES} )
             "-fxscope"
             "-target=XCORE-AI-EXPLORER"
             "${CMAKE_CURRENT_SOURCE_DIR}/config.xscope"
+            "-DHID_CONTROLS=1"
             "-DUNITY_SUPPORT_64"
             "-DUNITY_INCLUDE_DOUBLE"
             )

tests/xua_unit_tests/src/test_multi_report/test_hid_multi_report.c

@@ -1,4 +1,4 @@
-// Copyright 2021 XMOS LIMITED.
+// Copyright 2021-2022 XMOS LIMITED.
 // This Software is subject to the terms of the XMOS Public Licence: Version 1.
 #include <stddef.h>
 #include <stdio.h>
@@ -775,7 +775,6 @@ void test_initial_modification_with_subsequent_verification_2( void )
 //setIdle and associated timing functionality tests
 void test_set_idle( void )
 {
-    unsigned reportIdAll = 0;
     unsigned reportId = 1;
     unsigned reportId2 = 2;
 
@@ -785,33 +784,23 @@ void test_set_idle( void )
     setIdle = hidIsIdleActive( reportId2 );
     TEST_ASSERT_EQUAL_UINT( 0, setIdle );
 
-    setIdle = hidIsIdleActive( reportIdAll );
-    TEST_ASSERT_EQUAL_UINT( 0, setIdle );
-
     hidSetIdle( reportId, 1 );
     setIdle = hidIsIdleActive( reportId );
     TEST_ASSERT_EQUAL_UINT( 1, setIdle );
 
-    setIdle = hidIsIdleActive( reportIdAll );
-    TEST_ASSERT_EQUAL_UINT( 0, setIdle );
-
     setIdle = hidIsIdleActive( reportId2 );
     TEST_ASSERT_EQUAL_UINT( 0, setIdle );
 }
 
 void test_set_all_idle( void )
 {
-    unsigned reportIdAll = 0;
     unsigned reportId = 1;
     unsigned reportId2 = 2;
 
     unsigned setIdle = hidIsIdleActive( reportId );
     TEST_ASSERT_EQUAL_UINT( 0, setIdle );
 
-    setIdle = hidIsIdleActive( reportId2 ); 
-    TEST_ASSERT_EQUAL_UINT( 0, setIdle );
-
-    setIdle = hidIsIdleActive( reportIdAll );
+    setIdle = hidIsIdleActive( reportId2 );
     TEST_ASSERT_EQUAL_UINT( 0, setIdle );
 
     for ( reportId = 1; reportId <= HID_REPORT_COUNT; ++reportId ) {
@@ -819,14 +808,10 @@ void test_set_all_idle( void )
         setIdle = hidIsIdleActive( reportId );
         TEST_ASSERT_EQUAL_UINT( 1, setIdle );
     }
-
-    setIdle = hidIsIdleActive( reportIdAll );
-    TEST_ASSERT_EQUAL_UINT( 1, setIdle );
 }
 
 void test_change_pending( void )
 {
-    unsigned reportIdAll = 0;
     unsigned reportId = 1;
     unsigned reportId2 = 2;
 
@@ -836,39 +821,26 @@ void test_change_pending( void )
     changePending = hidIsChangePending( reportId2 );
     TEST_ASSERT_EQUAL_UINT( 0, changePending );
 
-    changePending = hidIsChangePending( reportIdAll );
-    TEST_ASSERT_EQUAL_UINT( 0, changePending );
-
     hidSetChangePending( reportId );
     changePending = hidIsChangePending( reportId );
     TEST_ASSERT_EQUAL_UINT( 1, changePending );
 
-    changePending = hidIsChangePending( reportIdAll );
-    TEST_ASSERT_EQUAL_UINT( 1, changePending );
-
     changePending = hidIsChangePending( reportId2 );
     TEST_ASSERT_EQUAL_UINT( 0, changePending );
 }
 
 void test_change_pending_all( void )
 {
-    unsigned reportIdAll = 0;
     unsigned reportId = 1;
 
     unsigned changePending = hidIsChangePending( reportId );
     TEST_ASSERT_EQUAL_UINT( 0, changePending );
 
-    changePending = hidIsChangePending( reportIdAll );
-    TEST_ASSERT_EQUAL_UINT( 0, changePending );
-
     for ( reportId = 1; reportId <= HID_REPORT_COUNT; ++reportId ) {
         hidSetChangePending( reportId );
         changePending = hidIsChangePending( reportId );
         TEST_ASSERT_EQUAL_UINT( 1, changePending );
     }
-
-    changePending = hidIsChangePending( reportIdAll );
-    TEST_ASSERT_EQUAL_UINT( 1, changePending );
 }
 
 void test_report_time( void )

tests/xua_unit_tests/src/test_simple/hid_report_descriptor.h

@@ -59,7 +59,7 @@ static const USB_HID_Short_Item_t hidUsageConsumerControl   = {
  * For internal purposes, a report element with ID of 0 must be included if report IDs are not being used.
  */
 static const USB_HID_Report_Element_t hidReportPageConsumer = {
-    .item.header = HID_REPORT_SET_HEADER(1, HID_REPORT_ITEM_TYPE_GLOBAL, HID_REPORT_ITEM_TAG_USAGE_PAGE), 
+    .item.header = HID_REPORT_SET_HEADER(1, HID_REPORT_ITEM_TYPE_GLOBAL, HID_REPORT_ITEM_TAG_USAGE_PAGE),
     .item.data = { USB_HID_USAGE_PAGE_ID_CONSUMER, 0x00 },
     .location = HID_REPORT_SET_LOC( 0, 2, 0, 0 )
 };
@@ -94,7 +94,7 @@ static USB_HID_Report_Element_t* const hidConfigurableElements[] = {
 };
 
 /*
- * List HID Reports, one per Report ID. This should be a usage page item with the relevant 
+ * List HID Reports, one per Report ID. This should be a usage page item with the relevant
  * If not using report IDs - still have one with report ID 0
  */
 static const USB_HID_Report_Element_t* const hidReports[] = {

tests/xua_unit_tests/src/test_simple/test_hid.c

@@ -1,4 +1,4 @@
-// Copyright 2021 XMOS LIMITED.
+// Copyright 2021-2022 XMOS LIMITED.
 // This Software is subject to the terms of the XMOS Public Licence: Version 1.
 #include <stddef.h>
 #include <stdio.h>

tests/xua_unit_tests/wscript

@@ -230,6 +230,7 @@ def build(bld):
         makefile_opts['XCC_FLAGS'] = ['-O2',
                                       '-g',
                                       '-Wall',
+                                      '-DHID_CONTROLS=1',
                                       '-DUNITY_SUPPORT_64',
                                       '-DUNITY_INCLUDE_DOUBLE',
                                       '-DXUD_CORE_CLOCK=600',

xpd.xml

@@ -1,120 +0,0 @@
-<?xml version="1.0" ?>
-<xpd>
-    <components>
-        <component description = "module_dfu" type = "demoCode" scope = "General Use" path = "module_dfu" local = "false" id = "module_dfu" name = "module_dfu">
-            <board>XMOS USB Audio Reference Designes</board>
-            <keyword>DFU</keyword>
-        </component>
-        <component description = "queue" type = "demoCode" scope = "General Use" path = "module_queue" local = "false" id = "module_queue" name = "Queuing Module For USB Audio Framework">
-            <board></board>
-            <keyword>UAC2</keyword>
-        </component>
-        <component description = "Core USB Audio Module" type = "demoCode" scope = "General Use" path = "module_usb_audio" local = "false" id = "module_usb_audio" name = "USB AUDIO MODULE">
-            <board>XR-USB-AUDIO-20-MC</board>
-            <keyword>USB Audio UAC2</keyword>
-        </component>
-        <component description = "MIDI" type = "demoCode" scope = "General Use" path = "module_usb_midi" local = "false" id = "module_usb_midi" name = "MIDI Module for USB Audio Framework">
-            <board></board>
-            <componentDependency version = "7.4.1">module_queue</componentDependency>
-            <keyword>MIDI</keyword>
-        </component>
-    </components>
-    <description>USB Audio Shared Components. For use in the XMOS USB Audio Refererence Designs.</description>
-    <docdir>module_dfu/doc</docdir>
-    <git_export>False</git_export>
-    <location>git://git/apps/sc_usb_audio</location>
-    <name>USB Audio Shared Components</name>
-    <maintainer>xross</maintainer>
-    <partnumber>XM-004719-DH</partnumber>
-    <release parenthash = "98b3bdba959bbaff0eba0e73f3b05d6adea82bbd" version = "1.0.0rc0" githash = "543155aaefc8f2b0109393c543429edd16eefa8c"></release>
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