M5StickcCPlus: Microphone not working
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Hello everyone,
It's been 2 weeks I'm trying to configure the microphone on M5stickCplus 1.1Here is the sample code I'm using
I believe that the module has a built-in microphone.As output of this code, only 0 is displayed.
Can someone please help me out 🙏?
#include <M5StickCPlus.h> #include <driver/i2s.h> #define SAMPLE_RATE 16000 #define SAMPLES 256 void setup() { M5.begin(); Serial.begin(115200); // I2S config i2s_config_t i2s_config = { .mode = (i2s_mode_t)(I2S_MODE_MASTER | I2S_MODE_RX), .sample_rate = SAMPLE_RATE, .bits_per_sample = I2S_BITS_PER_SAMPLE_16BIT, .channel_format = I2S_CHANNEL_FMT_ONLY_LEFT, .communication_format = I2S_COMM_FORMAT_I2S, .intr_alloc_flags = ESP_INTR_FLAG_LEVEL1, .dma_buf_count = 8, .dma_buf_len = 64, .use_apll = false, }; i2s_pin_config_t pin_config = { .bck_io_num = 0, .ws_io_num = 34, .data_out_num = I2S_PIN_NO_CHANGE, .data_in_num = 32 }; i2s_driver_install(I2S_NUM_0, &i2s_config, 0, NULL); i2s_set_pin(I2S_NUM_0, &pin_config); Serial.println("Mic test started..."); } void loop() { int16_t buffer[SAMPLES]; size_t bytesRead; i2s_read(I2S_NUM_0, (char *)buffer, SAMPLES * sizeof(int16_t), &bytesRead, portMAX_DELAY); // Print a few samples for (int i = 0; i < 10; i++) { Serial.println(buffer[i]); } delay(500); }