laiyp/lib_xua
1
0
Fork 0
forked from PAWPAW-Mirror/lib_xua
Code Pull Requests Activity

Merge branch 'feature/configurable_usb_rate_res' of github.com:shuchitak/lib_xua into feature/configurable_usb_res_rate_shuchita

Browse Source
This commit is contained in:
Keith Au
2020-02-24 11:46:35 +08:00
parent 0b5ddbd85e abbafba3a7
commit 11c8d56657
4 changed files with 13 additions and 43 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
CHANGELOG.rst
View File

@@ -21,7 +21,8 @@ lib_xua Change Log
events, to report Key-phrase detection as AC Search, and to report end-call
detection as AC Stop
* ADDED: Ability to read or modify vendor and product IDs
* ADDED: Support of variable USB sampling frequency
* ADDED: Override USB descriptor with sampling frequency and
bit-resolution set at boot time.
0.2.1
-----

2
lib_xua/src/core/buffer/decouple/decouple.xc
View File

@@ -1,4 +1,4 @@
// Copyright (c) 2011-2019, XMOS Ltd, All rights reserved
// Copyright (c) 2011-2020, XMOS Ltd, All rights reserved
#include "xua.h"
#if XUA_USB_EN

2
lib_xua/src/core/endpoint0/xua_ep0_uacreqs.h
View File

@@ -1,4 +1,4 @@
// Copyright (c) 2014-2018, XMOS Ltd, All rights reserved
// Copyright (c) 2014-2020, XMOS Ltd, All rights reserved
#ifndef _AUDIOREQUESTS_H_
#define _AUDIOREQUESTS_H_

49
lib_xua/src/core/endpoint0/xua_ep0_uacreqs.xc
View File

@@ -1,4 +1,4 @@
// Copyright (c) 2011-2018, XMOS Ltd, All rights reserved
// Copyright (c) 2011-2020, XMOS Ltd, All rights reserved
/**
* @brief Implements relevant requests from the USB Audio 2.0 Specification
* @author Ross Owen, XMOS Semiconductor
@@ -17,13 +17,6 @@
#ifdef MIXER
#include "mixer.h"
#endif
#include "xua_conf_default.h"
#include "descriptor_defs.h"
#define DEBUG_UNIT XUA_EP0_UACREQS
#define DEBUG_PRINT_ENABLE_XUA_EP0_UACREQS 0
#include "debug_print.h"
#define CS_XU_MIXSEL (0x06)
@@ -52,23 +45,8 @@ extern unsigned char channelMapUsb[NUM_USB_CHAN_IN];
extern unsigned char mixSel[MAX_MIX_COUNT][MIX_INPUTS];
#endif
/* Global var for current frequency, set to default freq */
#if(defined USB_DESCRIPTOR_OVERRIDE_RATE_RES)
extern uint32_t get_usb_to_device_rate();
extern uint32_t get_device_to_usb_rate();
extern uint32_t get_usb_to_device_bit_res();
extern uint32_t get_device_to_usb_bit_res();
#define g_curUSBin_SamFreq get_device_to_usb_rate()
#define g_curUSBout_SamFreq get_usb_to_device_rate()
unsigned int g_curSamFreq = DEFAULT_FREQ; // should no longer be used
#else
unsigned int g_curUSBin_SamFreq = DEFAULT_FREQ;
unsigned int g_curUSBout_SamFreq = DEFAULT_FREQ;
unsigned int g_curSamFreq = DEFAULT_FREQ; // should no longer be used
#endif
unsigned int g_curSamFreq = DEFAULT_FREQ;
#if 0
unsigned int g_curSamFreq48000Family = DEFAULT_FREQ % 48000 == 0;
@@ -1099,7 +1077,6 @@ int AudioEndpointRequests_1(XUD_ep ep0_out, XUD_ep ep0_in, USB_SetupPacket_t &sp
* bmRequestType.Recipient = Endpoint
* bmRequestType.Type = Class
* endpoint (wIndex & 0xff) is 0x01 or 0x82
* wIndex is endpoint address for distinguishing input and output
*/
XUD_Result_t result;
@@ -1130,8 +1107,7 @@ int AudioEndpointRequests_1(XUD_ep ep0_out, XUD_ep ep0_in, USB_SetupPacket_t &sp
/* Recontruct sample-freq */
int newSampleRate = (buffer, unsigned char[])[0] | ((buffer, unsigned char[])[1] << 8) | ((buffer, unsigned char[])[2] << 16);
if(((sp.wIndex == ENDPOINT_ADDRESS_IN_AUDIO) && (newSampleRate != g_curUSBin_SamFreq)) || \
((sp.wIndex == ENDPOINT_ADDRESS_OUT_AUDIO) && (newSampleRate != g_curUSBout_SamFreq)))
if(newSampleRate != g_curSamFreq)
{
int curSamFreq44100Family;
int curSamFreq48000Family;
@@ -1143,25 +1119,18 @@ int AudioEndpointRequests_1(XUD_ep ep0_out, XUD_ep ep0_in, USB_SetupPacket_t &sp
if(curSamFreq48000Family || curSamFreq44100Family)
{
if(sp.wIndex == ENDPOINT_ADDRESS_IN_AUDIO){
g_curUSBin_SamFreq = newSampleRate;
/* Instruct audio thread to change sample freq */
outuint(c_audioControl, SET_SAMPLE_FREQ);
outuint(c_audioControl, g_curUSBin_SamFreq);
}
else{ //if sp.wIndex == ENDPOINT_ADDRESS_OUT_AUDIO
g_curUSBout_SamFreq = newSampleRate;
/* Instruct audio thread to change sample freq */
outuint(c_audioControl, SET_SAMPLE_FREQ);
outuint(c_audioControl, g_curUSBout_SamFreq);
}
g_curSamFreq = newSampleRate;
/* Instruct audio thread to change sample freq */
outuint(c_audioControl, SET_SAMPLE_FREQ);
outuint(c_audioControl, g_curSamFreq);
/* Wait for handshake back - i.e. pll locked and clocks okay */
chkct(c_audioControl, XS1_CT_END);
/* Allow time for the change - feedback to stabilise */
FeedbackStabilityDelay();
}
}
}
return XUD_SetBuffer(ep0_in, (buffer, unsigned char[]), 0);
}