added adc_builtin support

MhageGH · Apr 29, 2020 · 99470c5 · 99470c5
1 parent e113449
commit 99470c5
Show file tree

Hide file tree

Showing 2 changed files with 12 additions and 3 deletions.
diff --git a/esp32_I2S_recorder/I2S.cpp b/esp32_I2S_recorder/I2S.cpp
@@ -3,15 +3,17 @@
 void I2S_Init(i2s_mode_t MODE, i2s_bits_per_sample_t BPS)
 {
   i2s_config_t i2s_config = {
-      .mode = (i2s_mode_t)(I2S_MODE_MASTER | MODE),
+      .mode = (i2s_mode_t)(I2S_MODE_MASTER | I2S_MODE_RX | I2S_MODE_TX | I2S_MODE_DAC_BUILT_IN | I2S_MODE_ADC_BUILT_IN),
       .sample_rate = SAMPLE_RATE,
       .bits_per_sample = BPS,
       .channel_format = I2S_CHANNEL_FMT_RIGHT_LEFT,
       .communication_format = (i2s_comm_format_t)(I2S_COMM_FORMAT_I2S | I2S_COMM_FORMAT_I2S_MSB),
       .intr_alloc_flags = 0,
       .dma_buf_count = 16,
-      .dma_buf_len = 60};
+      .dma_buf_len = 60
+    };
   if (MODE == I2S_MODE_RX || MODE == I2S_MODE_TX) {
+    Serial.println("using I2S_MODE");
     i2s_pin_config_t pin_config;
     pin_config.bck_io_num = PIN_I2S_BCLK;
     pin_config.ws_io_num = PIN_I2S_LRC;
@@ -29,6 +31,7 @@ void I2S_Init(i2s_mode_t MODE, i2s_bits_per_sample_t BPS)
     i2s_set_clk(I2S_NUM_0, SAMPLE_RATE, BPS, I2S_CHANNEL_STEREO);
   } 
   else if (MODE == I2S_MODE_DAC_BUILT_IN || MODE == I2S_MODE_ADC_BUILT_IN) {
+    Serial.println("using ADC_builtin");
     i2s_driver_install(I2S_NUM_0, &i2s_config, 0, NULL);
     // GPIO36, VP
     i2s_set_adc_mode(ADC_UNIT_1, ADC1_CHANNEL_0);  

diff --git a/esp32_I2S_recorder/esp32_I2S_recorder.ino b/esp32_I2S_recorder/esp32_I2S_recorder.ino
@@ -1,7 +1,9 @@
+#include "Arduino.h"
 #include <FS.h>
-#include <SD.h>
 #include "Wav.h"
 #include "I2S.h"
+#include <SD.h>
+
 
 //comment the first line and uncomment the second if you use MAX9814
 //#define I2S_MODE I2S_MODE_RX
@@ -22,6 +24,10 @@ File file;
 void setup() {
   Serial.begin(115200);
   if (!SD.begin()) Serial.println("SD begin failed");
+  while(!SD.begin()){
+    Serial.print(".");
+    delay(500);
+  }
   CreateWavHeader(header, waveDataSize);
   SD.remove(filename);
   file = SD.open(filename, FILE_WRITE);