I was trying out I2S audio output however I cant seem to make it work on the XIAO ESP32S3, does anyone have any clue of why? The code does execute and no errors are found, I play a wav file using SPIFFS
Hi there,
and Welcome here.
Post up the code you are trying, Just use the code tags above “</>” Paste it in there
HTH
GL PJ
Hi thank you very much
this is the code
#include "glasses.hpp"
#define LRC 0
#define BCLK 1
#define DIN 2
void setup_sound() {
i2s_config_t i2s_config = {
.mode = (i2s_mode_t)(I2S_MODE_MASTER | I2S_MODE_TX),
.sample_rate = 44100,
.bits_per_sample = I2S_BITS_PER_SAMPLE_16BIT,
.channel_format = I2S_CHANNEL_FMT_ONLY_LEFT,
.communication_format = I2S_COMM_FORMAT_I2S_MSB,
.intr_alloc_flags = ESP_INTR_FLAG_LEVEL1,
.dma_buf_count = 8,
.dma_buf_len = 1024,
.use_apll = false,
.tx_desc_auto_clear = true,
};
i2s_pin_config_t pin_config = {
.bck_io_num = BCLK,
.ws_io_num = LRC,
.data_out_num = DIN,
.data_in_num = -1,
};
i2s_driver_install(I2S_NUM_0, &i2s_config, 0, NULL);
i2s_set_pin(I2S_NUM_0, &pin_config);
}
void writeI2S(const uint8_t* data, size_t len) {
size_t bytesWritten;
i2s_write(I2S_NUM_0, data, len, &bytesWritten, portMAX_DELAY);
}
void Glasses::play_audio(uint8_t* buffer) {
setup_sound();
const size_t chunkSize = 1024;
size_t bufferSize = sizeof(bufferSize);
for (size_t i = 0; i < bufferSize; i += chunkSize) {
size_t chunk = (bufferSize - i < chunkSize) ? (bufferSize - i) : chunkSize;
writeI2S(&buffer[i], chunk);
}
}
Where buffer is the PCM of a WAV File
I am using the max938357a breakout board together with an 8omh speaker 0.3W on 5V
This is the connection https://imgur.com/QwcaR3c
Hi there,
No reason it shouldn’t work, But I do see some Sketchy Soldering on the picture here and the next pin also.
look at those too,
I’ll try to compile it.
Use a little flux(allot) and heat in until it flows, you won’t hurt it if You don’t hold it for long as well.
what is the Z of the Speaker? 4 or 8 ohms?
GL
![:slight_smile: :slight_smile:](https://forum.seeedstudio.com/images/emoji/twitter/slight_smile.png?v=12)
![:v: :v:](https://forum.seeedstudio.com/images/emoji/twitter/v.png?v=12)
First time soldering for me ahah! Thank you, I’ll order some new break out boards to be safe. Speaker is 8 ohms, should be supported theoretically (right) ?.
Thank you very much
just heat it up and reflow… use flux if you have it
I saw the following discussion post where someone managed to play an audio file through an HTTP request, however he uses different GPIOs are there any specific ones? I didnt test it yet as I am waiting for a new board, but come the library works where as <driver/i2s.h> didn’t at least for me. Because at the end I am aiming to play the audio through a buffer not an MP3 file.
I will try that thank you
i think only specific gpio are capable of sending IIS… also some MCU’s are not IIS capable… need to check the product specs for sure