ESP32 PCM mode bad signal Syncro

zymoplex
Posts: 1
Joined: Fri Jun 15, 2018 11:03 am

ESP32 PCM mode bad signal Syncro

Postby zymoplex » Fri Jun 15, 2018 11:36 am

Hello,

I have a problem with the signals BCLK and FSYNC, attached two JPEG file, the first is the signal of the ESP32 (sync-esp32.jpg) and the second (sync-need.jpg) the signal I want.
I don't know how to do that.

Here is the code

Thank you

Code: Select all

static const i2s_config_t i2s_config = {
      .mode = I2S_MODE_MASTER | I2S_MODE_TX,
      .sample_rate = 8000,
      .bits_per_sample = 16,
      .channel_format = I2S_CHANNEL_FMT_ONLY_RIGHT,
      .communication_format = I2S_COMM_FORMAT_PCM | I2S_COMM_FORMAT_PCM_SHORT,
      .intr_alloc_flags = 0,
        // default interrupt priority
      .dma_buf_count = 8,
      .dma_buf_len = 64,
      .use_apll = false
   };

   static const i2s_pin_config_t pin_config = {
      .bck_io_num = 26,
      .ws_io_num = 25,
      .data_out_num = 22,
      .data_in_num = 23
   };
Attachments
sync-need.jpg
sync-need.jpg (65.12 KiB) Viewed 133 times
sync-esp32.jpg
sync-esp32.jpg (48.45 KiB) Viewed 133 times

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