Update to include basic audio functionality. Compiles. Need to add more debug checking.

TeensyDSP/DSP.cpp

@@ -0,0 +1,144 @@
+//======================================================================
+// DSP.cpp
+//======================================================================
+
+#include "DSP.h"
+
+#include <Audio.h>
+#include <i2c_t3.h>
+//#include <Wire.h>
+//#include <SPI.h>
+//#include <SD.h>
+//#include <SerialFlash.h>
+
+#define RX_AUDIO_CH 0
+
+#define TX_MIC_IN_CH  0
+#define TX_LINE_IN_CH 0
+#define TX_USB_IN_CH1 1
+#define TX_USB_IN_CH2 2
+
+UBitxDSP DSP;
+
+//static struct {
+
+  // GUItool: begin automatically generated code
+  AudioInputI2S            lineIn;           //xy=137,220
+  AudioInputUSB            usbIn;           //xy=142,326
+  AudioMixer4              rxAudio;         //xy=394,134
+  AudioMixer4              txAudio;         //xy=398,322
+  AudioOutputAnalog        spkrOut;           //xy=774,104
+  AudioOutputUSB           usbOut;           //xy=774,138
+  AudioOutputI2S           lineOut;           //xy=776,236
+  AudioConnection          patchCord1(lineIn, 0, rxAudio, 0);
+  AudioConnection          patchCord2(lineIn, 1, txAudio, 0);
+  AudioConnection          patchCord3(usbIn, 0, txAudio, 1);
+  AudioConnection          patchCord4(usbIn, 1, txAudio, 2);
+  AudioConnection          patchCord5(rxAudio, spkrOut);
+  AudioConnection          patchCord6(rxAudio, 0, lineOut, 0);
+  AudioConnection          patchCord7(rxAudio, 0, usbOut, 0);
+  AudioConnection          patchCord8(rxAudio, 0, usbOut, 1);
+  AudioConnection          patchCord9(txAudio, 0, lineOut, 1);
+  AudioControlSGTL5000     audioCtrl;     //xy=403,463
+  // GUItool: end automatically generated code
+
+//} audio;
+
+void UBitxDSP::begin() {
+  AudioMemory(20);
+  audioCtrl.enable();
+  audioCtrl.volume(0.0);      // headphone volume...
+  audioCtrl.muteHeadphone();  // ...not used by UBitxDSP
+
+  for (int i = 0; i < 4; i++) {
+    if (i == RX_AUDIO_CH)
+      rxAudio.gain(i, 1.0);
+    else
+      rxAudio.gain(i, 0.0);
+  }
+
+  for (int i = 0; i < 4; i++) {
+    txAudio.gain(i, 0.0);
+  }
+
+  // SETUP THE AUDIO INPUTS
+
+  // Rig (Line) Input (RX)
+  audioCtrl.inputSelect(AUDIO_INPUT_LINEIN);
+  audioCtrl.unmuteLineout();
+
+  // Mic Input (TX)
+  audioCtrl.micGain(0); // TODO: set value
+
+  // Line Input (TX)
+
+  // USB Input (TX)
+
+  // SETUP THE AUDIO OUTPUTS
+
+  // Speaker Output (RX)
+  spkrOut.analogReference(INTERNAL);
+
+  // Line Output (RX)
+
+  // USB Output (RX)
+
+  // Rig (Line) Output (TX)
+}
+
+void UBitxDSP::end() {
+}
+
+void UBitxDSP::rx() {
+  // mute all tx audio
+  for (int i = 0; i < 4; i++) {
+    txAudio.gain(i, 0.0);
+  }
+  // select line in for rx
+  audioCtrl.inputSelect(AUDIO_INPUT_LINEIN);
+  // restore rx audio
+  rxAudio.gain(RX_AUDIO_CH, 1.0); // restore the RX audio
+}
+
+void UBitxDSP::txMicIn() {
+  // mute the rx audio
+  rxAudio.gain(RX_AUDIO_CH, 0.0);
+  // restore the tx mic audio
+  audioCtrl.inputSelect(AUDIO_INPUT_MIC);  
+  for (int i = 0; i < 4; i++) {
+    if (i == TX_MIC_IN_CH)
+      txAudio.gain(i, 1.0);
+    else
+      txAudio.gain(i, 0.0);
+  }
+}
+
+void UBitxDSP::txLineIn() {
+  // mute the rx audio
+  rxAudio.gain(RX_AUDIO_CH, 0.0);
+  // restore the tx line in audio
+  audioCtrl.inputSelect(AUDIO_INPUT_LINEIN);
+  for (int i = 0; i < 4; i++) {
+    if (i == TX_LINE_IN_CH)
+      txAudio.gain(i, 1.0);
+    else
+      txAudio.gain(i, 0.0);
+  }
+}
+
+void UBitxDSP::txUSBIn() {
+    // mute the rx audio
+  rxAudio.gain(RX_AUDIO_CH, 0.0);
+  // restore the tx usb in audio
+  audioCtrl.inputSelect(AUDIO_INPUT_LINEIN);
+  for (int i = 0; i < 4; i++) {
+    if (i == TX_USB_IN_CH1 || i == TX_USB_IN_CH2)
+      txAudio.gain(i, 1.0);
+    else
+      txAudio.gain(i, 0.0);
+  }
+}
+
+//======================================================================
+// EOF
+//======================================================================