Allow using pcm510a without dedicated mute pin. (#120)

If the pin number is set to a value <0, no GPIO actions are performed.

components/audio_board/Kconfig.projbuild

@@ -174,11 +174,23 @@ menu "Audio Board"
 	    menu "DAC-Operation-Mode"
 			depends on DAC_TAS5805M
 
-	         config DAC_BRIDGE_MODE
+	        choice DAC_BRIDGE_MODE
-	            bool "Enable Bridge-Mode"
+	            prompt "Bridge-Mode selection"
-	            default false if DAC_TAS5805M
+	            default DAC_BRIDGE_MODE_DISABLED
-	            help
+
-	                If enabled left channel will be played with more power. To use the right channel please change Word-Select-Setting in Logic-Level-Settings.
+				config DAC_BRIDGE_MODE_DISABLED
+					bool "Stereo (bridge mode disabled)"
+
+				config DAC_BRIDGE_MODE_MONO
+					bool "Mono mode (Left + Right / 2)"
+				
+				config DAC_BRIDGE_MODE_LEFT
+					bool "Output left input channel"
+
+				config DAC_BRIDGE_MODE_RIGHT
+					bool "Output right input channel"
+	        
+			endchoice
 		endmenu
 
 		menu "Merus MA120x0 interface Configuration"

components/custom_board/pcm5102a/pcm5102a.c

@@ -42,6 +42,10 @@ esp_err_t pcm5102a_init(audio_hal_codec_config_t *codec_cfg) {
 
   gpio_config_t io_conf;
 
+  if (CONFIG_PCM5102A_MUTE_PIN < 0) {
+    return ESP_OK;
+  }
+
   io_conf.intr_type = GPIO_INTR_DISABLE;
   io_conf.mode = GPIO_MODE_OUTPUT;
   io_conf.pin_bit_mask = (1ULL << CONFIG_PCM5102A_MUTE_PIN);
@@ -65,12 +69,20 @@ esp_err_t pcm5102a_set_volume(int vol) { return ESP_OK; }
 esp_err_t pcm5102a_get_volume(int *value) { return ESP_OK; }
 
 esp_err_t pcm5102a_set_mute(bool enable) {
+  if (CONFIG_PCM5102A_MUTE_PIN < 0) {
+    return ESP_OK;
+  }
+
   return gpio_set_level(CONFIG_PCM5102A_MUTE_PIN, enable ? 0 : 1);
 }
 
 esp_err_t pcm5102a_get_mute(bool *enabled) { return ESP_OK; }
 
 esp_err_t pcm5102a_deinit(void) {
+  if (CONFIG_PCM5102A_MUTE_PIN < 0) {
+    return ESP_OK;
+  }
+
   return gpio_reset_pin(CONFIG_PCM5102A_MUTE_PIN);
 }
 

components/custom_board/tas5805m/tas5805m.c

@@ -167,14 +167,82 @@ esp_err_t tas5805m_init() {
   }
 
   // Check if Bridge-Mode is enabled
-#ifdef CONFIG_DAC_BRIDGE_MODE
+#if defined(CONFIG_DAC_BRIDGE_MODE_MONO) || defined(CONFIG_DAC_BRIDGE_MODE_LEFT) || defined(CONFIG_DAC_BRIDGE_MODE_RIGHT)
-  uint8_t value = 0;
+  ESP_LOGV(TAG, "Setting Bridge-Mode");
-  ret = tas5805m_read_byte(TAS5805M_DEVICE_CTRL_1_REGISTER, &value);
-  if (ret != ESP_OK) return ret;
-  value = 0b100;
 
-  ret = tas5805m_write_byte(TAS5805M_DEVICE_CTRL_1_REGISTER, value);
+  // enable bridge mode
-  if (ret != ESP_OK) return ret;
+  ret = tas5805m_write_byte(TAS5805M_DEVICE_CTRL_1_REGISTER, 0x04);
+  
+  // Mixer config
+  ret |= tas5805m_write_byte(0x0, 0x0);
+  ret |= tas5805m_write_byte(0x7f, 0x8c);
+  ret |= tas5805m_write_byte(0x0, 0x29);
+
+  #if defined(CONFIG_DAC_BRIDGE_MODE_MONO)
+  ESP_LOGI(TAG, "Defining Bridge-Mode to Mono");
+  // Left mixer input to left ouput (-6 dB)
+  ret |= tas5805m_write_byte(0x18, 0x00);
+  ret |= tas5805m_write_byte(0x19, 0x40);
+  ret |= tas5805m_write_byte(0x1a, 0x26);
+  ret |= tas5805m_write_byte(0x1b, 0xe7);
+
+  // Right mixer input to left ouput (-6 dB)
+  ret |= tas5805m_write_byte(0x1c, 0x00);
+  ret |= tas5805m_write_byte(0x1d, 0x40);
+  ret |= tas5805m_write_byte(0x1e, 0x26);
+  ret |= tas5805m_write_byte(0x1f, 0xe7);
+
+  #elif defined(CONFIG_DAC_BRIDGE_MODE_LEFT)
+  ESP_LOGI(TAG, "Defining Bridge-Mode to Left");
+  // Left mixer input to left ouput (0 dB)
+  ret |= tas5805m_write_byte(0x18, 0x00);
+  ret |= tas5805m_write_byte(0x19, 0x80);
+  ret |= tas5805m_write_byte(0x1a, 0x00);
+  ret |= tas5805m_write_byte(0x1b, 0x00);
+
+  // Right mixer input to left ouput (-110 dB)
+  ret |= tas5805m_write_byte(0x1c, 0x00);
+  ret |= tas5805m_write_byte(0x1d, 0x00);
+  ret |= tas5805m_write_byte(0x1e, 0x00);
+  ret |= tas5805m_write_byte(0x1f, 0x00);
+
+  #elif defined(CONFIG_DAC_BRIDGE_MODE_RIGHT)
+  ESP_LOGI(TAG, "Defining Bridge-Mode to Right");
+  // Left mixer input to left ouput (-110 dB)
+  ret |= tas5805m_write_byte(0x18, 0x00);
+  ret |= tas5805m_write_byte(0x19, 0x00);
+  ret |= tas5805m_write_byte(0x1a, 0x00);
+  ret |= tas5805m_write_byte(0x1b, 0x00);
+
+  // Right mixer input to left ouput (0 dB)
+  ret |= tas5805m_write_byte(0x1c, 0x00);
+  ret |= tas5805m_write_byte(0x1d, 0x80);
+  ret |= tas5805m_write_byte(0x1e, 0x00);
+  ret |= tas5805m_write_byte(0x1f, 0x00);
+
+  #endif
+
+  // Left mixer input to right ouput (-110 dB as the right output is not used)
+  ret |= tas5805m_write_byte(0x20, 0x00);
+  ret |= tas5805m_write_byte(0x21, 0x00);
+  ret |= tas5805m_write_byte(0x22, 0x00);
+  ret |= tas5805m_write_byte(0x23, 0x00);
+
+  // Right mixer input to right ouput (-110 dB as the right output is not used)
+  ret |= tas5805m_write_byte(0x24, 0x00);
+  ret |= tas5805m_write_byte(0x25, 0x00);
+  ret |= tas5805m_write_byte(0x26, 0x00);
+  ret |= tas5805m_write_byte(0x27, 0x00);
+
+
+  // End config
+  ret |= tas5805m_write_byte(0x0, 0x0);
+  ret |= tas5805m_write_byte(0x7f, 0x0);
+
+  if (ret != ESP_OK) {
+    ESP_LOGE(TAG, "Setting Bridge-Mode failed");
+    return ret;
+  }
 #endif
 
   return ret;