From 4c79429251e6a3ddf40e251e211e1daeba01ce0f Mon Sep 17 00:00:00 2001
From: louis <louis@xmos.com>
Date: Thu, 19 Jan 2017 15:57:08 +0000
Subject: [PATCH] Remove USB with define NO_USB in main & audio_io.

---
 module_usb_audio/audio_io/audio_io.xc | 15 +++++++++++++++
 module_usb_audio/main.xc              |  2 ++
 2 files changed, 17 insertions(+)

diff --git a/module_usb_audio/audio_io/audio_io.xc b/module_usb_audio/audio_io/audio_io.xc
index 368c6ebf..063cb9ea 100755
--- a/module_usb_audio/audio_io/audio_io.xc
+++ b/module_usb_audio/audio_io/audio_io.xc
@@ -255,6 +255,7 @@ static inline void TransferAdatTxSamples(chanend c_adat_out, const unsigned samp
 /* sampsFromAudioToUsb: The sample frame that was received from the audio interfaces and that the device is going to send to the host */
 void UserBufferManagement(unsigned sampsFromUsbToAudio[], unsigned sampsFromAudioToUsb[], client audManage_if i_audMan);
 
+#ifndef NO_USB
 #pragma unsafe arrays
 static inline unsigned DoSampleTransfer(chanend c_out, const int readBuffNo, const unsigned underflowWord, client audManage_if i_audMan)
 {
@@ -312,6 +313,15 @@ static inline unsigned DoSampleTransfer(chanend c_out, const int readBuffNo, con
     return 0;
 }
 
+#else /* NO_USB */
+#pragma unsafe arrays
+static inline unsigned DoSampleTransfer(chanend c_out, const int readBuffNo, const unsigned underflowWord, client audManage_if i_audMan)
+{
+    UserBufferManagement(samplesOut, samplesIn[readBuffNo], i_audMan);
+    return 0;
+}
+#endif /* NO_USB */
+
 static inline void InitPorts(unsigned divide)
 {
     unsigned tmp;
@@ -1231,7 +1241,9 @@ chanend ?c_config, chanend ?c
                 }
 #endif
                 /* Handshake back */
+#ifndef NO_USB
                 outct(c_mix_out, XS1_CT_END);
+#endif
             }
         }
         firstRun = 0;
@@ -1297,6 +1309,7 @@ chanend ?c_config, chanend ?c
                    null, i_audMan
                    );
 
+#ifndef NO_USB
                 if(command == SET_SAMPLE_FREQ)
                 {
                     curSamFreq = inuint(c_mix_out) * I2S_DOWNSAMPLE_FACTOR;
@@ -1339,6 +1352,8 @@ chanend ?c_config, chanend ?c
                     	}
                   	}
                 }
+#endif /* NO_USB */
+
 #ifdef SPDIF_TX
                 /* Notify S/PDIF task of impending new freq... */
                 outct(c_spdif_out, XS1_CT_END);
diff --git a/module_usb_audio/main.xc b/module_usb_audio/main.xc
index 59fbde34..db9c39e2 100755
--- a/module_usb_audio/main.xc
+++ b/module_usb_audio/main.xc
@@ -577,6 +577,7 @@ int main()
             DFUHandler(dfuInterface, null);
 #endif
 #endif
+#ifndef NO_USB
             usb_audio_core(c_mix_out
 #ifdef MIDI
                 , c_midi
@@ -594,6 +595,7 @@ int main()
                 VENDOR_REQUESTS_PARAMS_
 
             );
+#endif /* NO_USB */
         }
 
         on tile[AUDIO_IO_TILE]: usb_audio_io(c_mix_out, c_adc