Reduce output driver, watch codec status bits (#731)

* six db

* watchdog: add check for codec overcurrent

* fixup: check only top bits

* more debug data, always reset

kitsune/i2c_cmd.c

@@ -722,6 +722,43 @@ int32_t set_volume(int v, unsigned int dly) {
 
 }
 
+static bool codec_muted = true;
+void codec_watchdog() {
+	unsigned char cmd[2];
+	if( !codec_muted && xSemaphoreTakeRecursive(i2c_smphr, 0)) {
+
+		codec_set_book(0);
+		codec_set_page(0);
+
+		cmd[0] = 44;
+		cmd[1] = 0;
+		I2C_IF_Write(Codec_addr, cmd, 1, 1);
+		I2C_IF_Read(Codec_addr, &cmd[1], 1);
+
+		if( cmd[1] ) {
+			LOGE("B0_P0_R44 %x\n",cmd[1]);
+		}
+
+		if( cmd[1] & 0xC0 ) {
+			LOGE("overcurrent\n",cmd[1]);
+
+			codec_set_book(0);
+			codec_set_page(1);
+
+			cmd[0] = 45;
+			cmd[1] = 0;
+			I2C_IF_Write(Codec_addr, cmd, 1, 1);
+			I2C_IF_Read(Codec_addr, &cmd[1], 1);
+			LOGE("B0_P1_R45 %x\n",cmd[1]);
+
+			cmd[0] = 45;
+			cmd[1] = 6;
+			I2C_IF_Write(Codec_addr, cmd, 2, 1);
+		}
+
+		xSemaphoreGiveRecursive(i2c_smphr);
+	}
+}
 
 int cmd_codec(int argc, char *argv[]) {
 	unsigned char cmd[2];
@@ -888,6 +925,7 @@ void codec_mute_spkr(void)
 		cmd[1] = 0x00;
 		I2C_IF_Write(Codec_addr, cmd, 2, send_stop);
 
+		codec_muted = true;
 		xSemaphoreGiveRecursive(i2c_smphr);
 	}
 
@@ -907,9 +945,10 @@ void codec_unmute_spkr(void)
 
 	if( xSemaphoreTakeRecursive(i2c_smphr, 100)) {
 		cmd[0] = 48;
-		cmd[1] = (SPK_VOLUME_12dB << 4);
+		cmd[1] = (SPK_VOLUME_6dB << 4);
 		I2C_IF_Write(Codec_addr, cmd, 2, send_stop);
 
+		codec_muted = false;
 		xSemaphoreGiveRecursive(i2c_smphr);
 	}
 

kitsune/main/main.c

@@ -308,6 +308,7 @@ void nwp_reset_thread(void* unused) {
 #endif
 extern bool disable_net_timeout;
 bool check_button();
+void codec_watchdog();
 void watchdog_thread(void* unused) {
 #ifdef NWP_WATCHDOG_TIMEOUT
 	int last_nwp_reset_time = 0;
@@ -333,6 +334,7 @@ void watchdog_thread(void* unused) {
 			last_nwp_reset_time = xTaskGetTickCount();
 		}
 #endif
+		codec_watchdog();
 		MAP_WatchdogIntClear(WDT_BASE); //clear wdt
 		vTaskDelay(1000);
 	}