Merge pull request #39 from shivenmian/u/shivenmian/esp32ino

feat: added playback .ino code for esp32 atom echo

01OS/01OS/clients/esp32/playback.ino

@@ -0,0 +1,95 @@
+/*Press button to record,released button to playback*/
+
+#include <driver/i2s.h>
+#include <M5Atom.h>
+
+#define CONFIG_I2S_BCK_PIN 19
+#define CONFIG_I2S_LRCK_PIN 33
+#define CONFIG_I2S_DATA_PIN 22
+#define CONFIG_I2S_DATA_IN_PIN 23
+
+#define SPEAKER_I2S_NUMBER I2S_NUM_0
+
+#define MODE_MIC 0
+#define MODE_SPK 1
+#define DATA_SIZE 1024
+
+uint8_t microphonedata0[1024 * 70];
+int data_offset = 0;
+
+void InitI2SSpeakerOrMic(int mode) {
+  esp_err_t err = ESP_OK;
+
+  i2s_driver_uninstall(SPEAKER_I2S_NUMBER);
+  i2s_config_t i2s_config = {
+    .mode = (i2s_mode_t)(I2S_MODE_MASTER),
+    .sample_rate = 16000,
+    .bits_per_sample =
+      I2S_BITS_PER_SAMPLE_16BIT,  // is fixed at 12bit, stereo, MSB
+    .channel_format = I2S_CHANNEL_FMT_ALL_RIGHT,
+#if ESP_IDF_VERSION > ESP_IDF_VERSION_VAL(4, 1, 0)
+    .communication_format =
+      I2S_COMM_FORMAT_STAND_I2S,  // Set the format of the communication.
+#else                             // 设置通讯格式
+    .communication_format = I2S_COMM_FORMAT_I2S,
+#endif
+    .intr_alloc_flags = ESP_INTR_FLAG_LEVEL1,
+    .dma_buf_count = 6,
+    .dma_buf_len = 60,
+  };
+  if (mode == MODE_MIC) {
+    i2s_config.mode =
+      (i2s_mode_t)(I2S_MODE_MASTER | I2S_MODE_RX | I2S_MODE_PDM);
+  } else {
+    i2s_config.mode = (i2s_mode_t)(I2S_MODE_MASTER | I2S_MODE_TX);
+    i2s_config.use_apll = false;
+    i2s_config.tx_desc_auto_clear = true;
+  }
+
+  err += i2s_driver_install(SPEAKER_I2S_NUMBER, &i2s_config, 0, NULL);
+  i2s_pin_config_t tx_pin_config;
+
+#if (ESP_IDF_VERSION > ESP_IDF_VERSION_VAL(4, 3, 0))
+  tx_pin_config.mck_io_num = I2S_PIN_NO_CHANGE;
+#endif
+  tx_pin_config.bck_io_num = CONFIG_I2S_BCK_PIN;
+  tx_pin_config.ws_io_num = CONFIG_I2S_LRCK_PIN;
+  tx_pin_config.data_out_num = CONFIG_I2S_DATA_PIN;
+  tx_pin_config.data_in_num = CONFIG_I2S_DATA_IN_PIN;
+
+  // Serial.println("Init i2s_set_pin");
+  err += i2s_set_pin(SPEAKER_I2S_NUMBER, &tx_pin_config);
+  // Serial.println("Init i2s_set_clk");
+  err += i2s_set_clk(SPEAKER_I2S_NUMBER, 16000, I2S_BITS_PER_SAMPLE_16BIT,
+                     I2S_CHANNEL_MONO);
+}
+
+void setup() {
+  M5.begin(true, false, true);
+  M5.dis.drawpix(0, CRGB(128, 128, 0));
+  delay(2000);
+}
+
+void loop() {
+  if (M5.Btn.isPressed()) {
+    data_offset = 0;
+    InitI2SSpeakerOrMic(MODE_MIC);
+    M5.dis.drawpix(0, CRGB(128, 128, 0));
+    size_t byte_read;
+
+    while (1) {
+      i2s_read(SPEAKER_I2S_NUMBER,
+               (char *)(microphonedata0 + data_offset), DATA_SIZE,
+               &byte_read, (100 / portTICK_RATE_MS));
+      data_offset += 1024;
+      M5.update();
+      if (M5.Btn.isReleased() || data_offset >= 71679) break;
+      // delay(60);
+    }
+    size_t bytes_written;
+    InitI2SSpeakerOrMic(MODE_SPK);
+    i2s_write(SPEAKER_I2S_NUMBER, microphonedata0, data_offset,
+              &bytes_written, portMAX_DELAY);
+  }
+  M5.update();
+}