Posts made by jimruxton

I can't get this base to work with the AtomS3R . The example on the website doesn't work due to an i2s conflict between new and legacy i2s drivers. I finally got the following program to run meaning I see the text on the display however I can't seem to hear anything. Not sure if it isn't recording or not playing back properly. Does anyone have recent working code for this pair? Thanks.

#include "M5Unified.h"

// Define buffer size (200KB for ESP32-S3)
#define RECORD_SIZE (1024 * 200)
static uint8_t *buffer = nullptr;

void setup()
{
    auto cfg = M5.config();
    // Enable external I2C for ES8311 codec on the audio base
    cfg.external_imu = true;
    M5.begin(cfg);

    M5.Display.setFont(&fonts::FreeMonoBold9pt7b);
    Serial.begin(115200);

    // --------------------------
    // Speaker Configuration (I2S Output)
    // AtomS3R I2S pins: BCK=8, WS=6, DOUT=5
    // --------------------------
    auto spk_cfg = M5.Speaker.config();
    spk_cfg.pin_data_out = 5;
    spk_cfg.pin_bck      = 8;
    spk_cfg.pin_ws       = 6;
    spk_cfg.sample_rate  = 44100;
    spk_cfg.i2s_port     = I2S_NUM_0;
    spk_cfg.stereo       = false; // Use mono for the base speaker
    M5.Speaker.config(spk_cfg);
    M5.Speaker.begin();

    // --------------------------
    // Microphone Configuration (I2S Input)
    // AtomS3R I2S pins: BCK=8, WS=6, DIN=7
    // --------------------------
    auto mic_cfg = M5.Mic.config();
    mic_cfg.pin_data_in  = 7;
    mic_cfg.pin_bck      = 8;
    mic_cfg.pin_ws       = 6;
    mic_cfg.sample_rate  = 44100;
    mic_cfg.i2s_port     = I2S_NUM_1; // Use separate I2S port for input
    M5.Mic.config(mic_cfg);
    M5.Mic.begin();

    // Set volume/gain
    M5.Speaker.setVolume(50);
    // For v0.2.14, set mic gain via config if needed (default works for most cases)
    // mic_cfg.magnification = 2;

    // Allocate recording buffer
    buffer = (uint8_t *)malloc(RECORD_SIZE);
    if (buffer == nullptr) {
        Serial.println("Memory allocation failed!");
        while (true) delay(1000);
    }

    Serial.println("Device ready! Press button to record/play");
    M5.Display.println("Click to\nRecord & Play");
}

void loop()
{
    M5.update();

    if (M5.BtnA.wasClicked()) {
        M5.Display.fillScreen(BLACK);
        M5.Display.setCursor(0, 0);

        // --------------------------
        // Recording
        // --------------------------
        M5.Display.println("Recording...");
        Serial.println("Start recording");
        M5.Mic.record(buffer, RECORD_SIZE, 44100);
        delay(3000);

        // --------------------------
        // Playback
        // --------------------------
        M5.Display.println("Playing...");
        Serial.println("Start playing");
        M5.Speaker.playRaw(buffer, RECORD_SIZE, 44100, false, 1);
        while (M5.Speaker.isPlaying()) delay(10);

        M5.Display.println("Done");
        Serial.println("Done");
    }
}