void user_init(void) {
lastTick = xTaskGetTickCount();
startMem = lastMem = xPortGetFreeHeapSize();
sdk_uart_div_modify(0, UART_CLK_FREQ / 115200);
// enable file system
esp_spiffs_init();
esp_spiffs_mount();
// disable buffering
setbuf(stdin, NULL);
setbuf(stdout, NULL);
// this doesn't have enough stack!
//lispTask(NULL); return;
// for now run in a task, in order to allocate a bigger stack
// 1024 --> (fibo 13)
// 2048 --> (fibo 30) ???
xTaskCreate(lispTask, (signed char *)"lispTask", 2048, NULL, 2, NULL);
}
void play_task(void *pvParameters)
{
esp_spiffs_init();
if (esp_spiffs_mount() != SPIFFS_OK) {
printf("Error mount SPIFFS\n");
}
int fd = open("sample.wav", O_RDONLY);
if (fd < 0) {
printf("Error opening file\n");
return;
}
dumb_wav_header_t wav_header;
read(fd, (void*)&wav_header, sizeof(wav_header));
printf("Number of channels: %d\n", wav_header.num_channels);
printf("Bits per sample: %d\n", wav_header.bits_per_sample);
printf("Sample rate: %d\n", wav_header.sample_rate);
printf("Data size: %d\n", wav_header.data_size);
if (wav_header.bits_per_sample != 16) {
printf("Only 16 bit per sample is supported\n");
return;
}
if (wav_header.num_channels != 2) {
printf("Only 2 channels is supported\n");
return;
}
i2s_clock_div_t clock_div = i2s_get_clock_div(
wav_header.sample_rate * 2 * 16);
printf("i2s clock dividers, bclk=%d, clkm=%d\n",
clock_div.bclk_div, clock_div.clkm_div);
i2s_pins_t i2s_pins = {.data = true, .clock = true, .ws = true};
i2s_dma_init(dma_isr_handler, clock_div, i2s_pins);
while (1) {
init_descriptors_list();
i2s_dma_start(dma_block_list);
lseek(fd, sizeof(dumb_wav_header_t), SEEK_SET);
while (play_data(fd)) {};
i2s_dma_stop();
vQueueDelete(dma_queue);
printf("underrun counter: %d\n", underrun_counter);
vTaskDelay(1000 / portTICK_PERIOD_MS);
}
close(fd);
}
void user_init(void)
{
uart_set_baud(0, 115200);
xTaskCreate(play_task, "test_task", 1024, NULL, 2, NULL);
}
