add raw sound

src/hardware/pmu.cpp

@@ -41,9 +41,12 @@ void pmu_setup( TTGOClass *ttgo ) {
     // Turn off unused power
     ttgo->power->setPowerOutPut( AXP202_EXTEN, AXP202_OFF );
     ttgo->power->setPowerOutPut( AXP202_DCDC2, AXP202_OFF );
-    ttgo->power->setPowerOutPut( AXP202_LDO3, AXP202_OFF );
     ttgo->power->setPowerOutPut( AXP202_LDO4, AXP202_OFF );
 
+    // Turn i2s DAC on
+    ttgo->power->setLDO3Mode( AXP202_LDO3_MODE_DCIN );
+    ttgo->power->setPowerOutPut(AXP202_LDO3, AXP202_ON );
+
     pinMode( AXP202_INT, INPUT );
     attachInterrupt( AXP202_INT, &pmu_irq, FALLING );
 }
@@ -81,6 +84,7 @@ void pmu_standby( void ) {
         ttgo->power->setDCDC3Voltage( 3000 );
         log_i("enable 3.0V standby voltage");
     }
+    ttgo->power->setPowerOutPut(AXP202_LDO3, AXP202_OFF );
 }
 
 void pmu_wakeup( void ) {
@@ -97,6 +101,8 @@ void pmu_wakeup( void ) {
 
     ttgo->power->clearTimerStatus();
     ttgo->power->offTimer();
+
+    ttgo->power->setPowerOutPut( AXP202_LDO3, AXP202_ON );
 }
 /*
  *

src/hardware/powermgm.cpp

@@ -34,6 +34,7 @@
 #include "motor.h"
 #include "touch.h"
 #include "display.h"
+#include "sound.h"
 
 #include "gui/mainbar/mainbar.h"
 
@@ -52,6 +53,7 @@ void powermgm_setup( TTGOClass *ttgo ) {
     wifictl_setup();
     timesync_setup( ttgo );
     touch_setup( ttgo );
+    sound_setup();
 }
 
 /*

src/hardware/sound.cpp

@@ -0,0 +1,85 @@
+/****************************************************************************
+ *   Aug 3 22:21:17 2020
+ *   Copyright  2020  Dirk Brosswick
+ *   Email: dirk.brosswick@googlemail.com
+ ****************************************************************************/
+ 
+/*
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+#include "config.h"
+#include "driver/i2s.h"
+
+#include "sound.h"
+#include "gui/sound/snd_start.h"
+#include "gui/sound/snd_signal.h"
+
+TaskHandle_t _sound_Task;
+void sound_Task( void * pvParameters );
+
+void sound_setup( void ) {
+
+    esp_err_t err;
+
+    i2s_config_t i2s_config = {
+        .mode = (i2s_mode_t)(I2S_MODE_MASTER | I2S_MODE_TX),
+        .sample_rate = 8000,
+        .bits_per_sample = I2S_BITS_PER_SAMPLE_32BIT,
+        .channel_format = I2S_CHANNEL_FMT_RIGHT_LEFT,
+        .communication_format = (i2s_comm_format_t)(I2S_COMM_FORMAT_PCM | I2S_COMM_FORMAT_I2S_MSB),
+        .intr_alloc_flags = ESP_INTR_FLAG_LEVEL1, // high interrupt priority
+        .dma_buf_count = 8,
+        .dma_buf_len = 64   //Interrupt level 1
+    };
+
+    i2s_pin_config_t pin_config = {
+        .bck_io_num = TWATCH_DAC_IIS_BCK, //this is BCK pin
+        .ws_io_num = TWATCH_DAC_IIS_WS, // this is LRCK pin
+        .data_out_num = TWATCH_DAC_IIS_DOUT, // this is DATA output pin
+        .data_in_num = -1   //Not used
+    };
+
+    err = i2s_driver_install( I2S_PORT, &i2s_config, 0, NULL);
+    if (err != ESP_OK) { 
+        log_e("Failed installing driver: %d\r\n", err );
+        while (true);
+    }
+
+    err = i2s_set_pin( I2S_PORT, &pin_config);
+    if (err != ESP_OK) { 
+        log_e("Failed settings pin config: %d\r\n", err );
+        while (true);
+    }
+
+    xTaskCreate(    sound_Task,      /* Function to implement the task */
+                    "sound Task",    /* Name of the task */
+                    2000,              /* Stack size in words */
+                    NULL,               /* Task input parameter */
+                    1,                  /* Priority of the task */
+                    &_sound_Task );  /* Task handle. */
+
+}
+
+void sound_Task( void * pvParameters ) {
+    esp_err_t err;
+    size_t written = 0;
+    
+    err = i2s_write( I2S_PORT, start_raw, sizeof(start_raw), &written, portMAX_DELAY );
+    if (err != ESP_OK) { 
+        log_e("Failed write bytes: %d\r\n", err );
+    }
+    i2s_stop( I2S_PORT );
+    vTaskDelete( NULL );
+}

src/hardware/sound.h

@@ -0,0 +1,31 @@
+/****************************************************************************
+ *   Aug 3 22:21:17 2020
+ *   Copyright  2020  Dirk Brosswick
+ *   Email: dirk.brosswick@googlemail.com
+ ****************************************************************************/
+ 
+/*
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+#ifndef _SOUND_H
+    #define _SOUND_H
+
+    #include <TTGO.h>
+
+    #define I2S_PORT              I2S_NUM_0
+
+    void sound_setup( void );
+
+#endif // _EXAMPLE_APP_H