T16 mute improve (#7193)

Introduce mute time  on T16

radio/src/audio.h

@@ -512,6 +512,9 @@ class AudioQueue {
     bool isEmpty() const { return fragmentsFifo.empty(); };
     void wakeup();
     bool started() const { return _started; };
+#if defined(AUDIO_UNMUTE_DELAY)
+    tmr10ms_t lastAudioPlayTime = 0;
+#endif
 
     AudioBufferFifo buffersFifo;
 

radio/src/targets/common/arm/stm32/audio_dac_driver.cpp

@@ -88,33 +88,61 @@ void dacInit()
   NVIC_SetPriority(AUDIO_DMA_Stream_IRQn, 7);
 }
 
+#if defined(AUDIO_MUTE_GPIO_PIN)
+void audioMute()
+{
+#if defined(AUDIO_UNMUTE_DELAY)
+  tmr10ms_t now = get_tmr10ms();
+  if (!audioQueue.lastAudioPlayTime) {
+    // we start the mute delay now
+    audioQueue.lastAudioPlayTime = now;
+  }
+  else if (now - audioQueue.lastAudioPlayTime > AUDIO_MUTE_DELAY / 10) {
+    // delay expired, we may mute
+    GPIO_SetBits(AUDIO_MUTE_GPIO, AUDIO_MUTE_GPIO_PIN);
+  }
+#else
+  // mute
+  GPIO_SetBits(AUDIO_MUTE_GPIO, AUDIO_MUTE_GPIO_PIN);
+#endif
+}
+
+void audioUnmute()
+{
+#if defined(AUDIO_UNMUTE_DELAY)
+  // if muted
+  if (GPIO_ReadOutputDataBit(AUDIO_MUTE_GPIO, AUDIO_MUTE_GPIO_PIN)) {
+    // ..un-mute
+    GPIO_ResetBits(AUDIO_MUTE_GPIO, AUDIO_MUTE_GPIO_PIN);
+    RTOS_WAIT_MS(AUDIO_UNMUTE_DELAY);
+  }
+  // reset the mute delay
+  audioQueue.lastAudioPlayTime = 0;
+#else
+  GPIO_ResetBits(AUDIO_MUTE_GPIO, AUDIO_MUTE_GPIO_PIN);
+#endif
+}
+#endif
+
 void audioConsumeCurrentBuffer()
 {
   if (!nextBuffer) {
     nextBuffer = audioQueue.buffersFifo.getNextFilledBuffer();
     if (nextBuffer) {
 #if defined(AUDIO_MUTE_GPIO_PIN)
-      // if muted
-      if (GPIO_ReadOutputDataBit(AUDIO_MUTE_GPIO, AUDIO_MUTE_GPIO_PIN)) {
-        // ..un-mute
-        GPIO_ResetBits(AUDIO_MUTE_GPIO, AUDIO_MUTE_GPIO_PIN);
-#if defined(AUDIO_UNMUTE_DELAY)
-        RTOS_WAIT_MS(AUDIO_UNMUTE_DELAY);
+      audioUnmute();
 #endif
-      }
-#endif
-      AUDIO_DMA_Stream->CR &= ~DMA_SxCR_EN ;                              // Disable DMA channel
-      AUDIO_DMA->HIFCR = DMA_HIFCR_CTCIF5 | DMA_HIFCR_CHTIF5 | DMA_HIFCR_CTEIF5 | DMA_HIFCR_CDMEIF5 | DMA_HIFCR_CFEIF5 ; // Write ones to clear bits
+      AUDIO_DMA_Stream->CR &= ~DMA_SxCR_EN; // Disable DMA channel
+      AUDIO_DMA->HIFCR = DMA_HIFCR_CTCIF5 | DMA_HIFCR_CHTIF5 | DMA_HIFCR_CTEIF5 | DMA_HIFCR_CDMEIF5 | DMA_HIFCR_CFEIF5; // Write ones to clear bits
       AUDIO_DMA_Stream->M0AR = CONVERT_PTR_UINT(nextBuffer->data);
       AUDIO_DMA_Stream->NDTR = nextBuffer->size;
-      AUDIO_DMA_Stream->CR |= DMA_SxCR_EN | DMA_SxCR_TCIE ;               // Enable DMA channel and interrupt
-      DAC->SR = DAC_SR_DMAUDR1 ;                      // Write 1 to clear flag
-      DAC->CR |= DAC_CR_EN1 | DAC_CR_DMAEN1 ;                 // Enable DAC
+      AUDIO_DMA_Stream->CR |= DMA_SxCR_EN | DMA_SxCR_TCIE; // Enable DMA channel and interrupt
+      DAC->SR = DAC_SR_DMAUDR1; // Write 1 to clear flag
+      DAC->CR |= DAC_CR_EN1 | DAC_CR_DMAEN1; // Enable DAC
     }
 #if defined(AUDIO_MUTE_GPIO_PIN)
     else {
-      // mute
-      GPIO_SetBits(AUDIO_MUTE_GPIO, AUDIO_MUTE_GPIO_PIN);
+      audioMute();
     }
 #endif
   }

radio/src/targets/horus/hal.h

@@ -547,7 +547,8 @@
 #endif
 
 #if defined(RADIO_T16)
-  #define AUDIO_UNMUTE_DELAY 150
+  #define AUDIO_UNMUTE_DELAY            120  // ms
+  #define AUDIO_MUTE_DELAY              500  // ms
 #endif
 
 // I2C Bus