sdcard read with ESP32-LyraT-Mini V1.2
Posted: Sat Feb 13, 2021 12:14 pm
Recently I got ESP32-LyraT-Mini V1.2 board.
Today try to read & write sdcard. But it doesn't work.
I referred this code.
https://github.com/espressif/esp-idf/bl ... ple_main.c
in this description, ESP32-LyraT-Mini support SPI/1-bit mode.
https://docs.espressif.com/projects/esp ... crosd-card
where should I change in my code?
Code: Select all
void app_main(void)
{
printf("Hello world!\n");
// xTaskCreate((void *) task_01, "Task 01", 1024 * 2, "Task01", 2, &h_myTask);
vTaskDelay(100/portTICK_PERIOD_MS);
esp_err_t ret;
esp_vfs_fat_sdmmc_mount_config_t mount_config = {
.format_if_mount_failed = false,
.max_files = 5,
};
sdmmc_card_t* card;
const char mount_point[] = MOUNT_POINT;
ESP_LOGI(TAG, "Initializing SD card");
ESP_LOGI(TAG, "Using SDMMC peripheral");
sdmmc_host_t host = SDMMC_HOST_DEFAULT();
host.flags = SDMMC_HOST_FLAG_1BIT;
sdmmc_slot_config_t slot_config = SDMMC_SLOT_CONFIG_DEFAULT();
slot_config.width = 1;
gpio_set_pull_mode(15, GPIO_PULLUP_ONLY); // CMD, needed in 4- and 1- line modes
gpio_set_pull_mode(2, GPIO_PULLUP_ONLY); // D0, needed in 4- and 1-line modes
gpio_set_pull_mode(4, GPIO_PULLUP_ONLY); // D1, needed in 4-line mode only
gpio_set_pull_mode(12, GPIO_PULLUP_ONLY); // D2, needed in 4-line mode only
gpio_set_pull_mode(13, GPIO_PULLUP_ONLY); // D3, needed in 4- and 1-line modes
ESP_LOGI(TAG, "ret");
ret = esp_vfs_fat_sdmmc_mount(mount_point, &host, &slot_config, &mount_config, &card);
if (ret != ESP_OK) {
if (ret == ESP_FAIL) {
ESP_LOGE(TAG, "Failed to mount filesystem. "
"If you want the card to be formatted, set the EXAMPLE_FORMAT_IF_MOUNT_FAILED menuconfig option.");
} else {
ESP_LOGE(TAG, "Failed to initialize the card (%s). "
"Make sure SD card lines have pull-up resistors in place.", esp_err_to_name(ret));
}
return;
}
ESP_LOGI(TAG, "MOUNT_POINT");
FILE* f = fopen(MOUNT_POINT"/hello.txt", "w");
if (f == NULL) {
ESP_LOGE(TAG, "Failed to open file for writing");
return;
}
fprintf(f, "Hello %s!\n", card->cid.name);
fclose(f);
ESP_LOGI(TAG, "File written");
}