75 lines
2.6 KiB
C++
75 lines
2.6 KiB
C++
#include "sd.h"
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sdmmc_card_t *card;
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static const char* mount_point = MOUNT_POINT;
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static const char* TAG = "sd";
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void init_sd() {
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esp_err_t ret;
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// Options for mounting the filesystem.
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// If format_if_mount_failed is set to true, SD card will be partitioned and
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// formatted in case when mounting fails.
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esp_vfs_fat_sdmmc_mount_config_t mount_config = {
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.format_if_mount_failed = true,
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.max_files = 5,
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.allocation_unit_size = 16 * 1024,
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.disk_status_check_enable = false,
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};
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ESP_LOGI(TAG, "Initializing SD card");
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// Use settings defined above to initialize SD card and mount FAT filesystem.
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// Note: esp_vfs_fat_sdmmc/sdspi_mount is all-in-one convenience functions.
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// Please check its source code and implement error recovery when developing
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// production applications.
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ESP_LOGI(TAG, "Using SDMMC peripheral");
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sdmmc_host_t host = SDMMC_HOST_DEFAULT();
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// This initializes the slot without card detect (CD) and write protect (WP) signals.
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// Modify slot_config.gpio_cd and slot_config.gpio_wp if your board has these signals.
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sdmmc_slot_config_t slot_config = SDMMC_SLOT_CONFIG_DEFAULT();
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// Set bus width to use:
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slot_config.width = 4;
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// On chips where the GPIOs used for SD card can be configured, set them in
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// the slot_config structure:
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slot_config.clk = SD_PIN_CLK;
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slot_config.cmd = SD_PIN_CMD;
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slot_config.d0 = SD_PIN_D0;
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slot_config.d1 = SD_PIN_D1;
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slot_config.d2 = SD_PIN_D2;
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slot_config.d3 = SD_PIN_D3;
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// Enable internal pullups on enabled pins. The internal pullups
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// are insufficient however, please make sure 10k external pullups are
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// connected on the bus. This is for debug / example purpose only.
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slot_config.flags |= SDMMC_SLOT_FLAG_INTERNAL_PULLUP;
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ESP_LOGI(TAG, "Mounting filesystem");
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ret = esp_vfs_fat_sdmmc_mount(mount_point, &host, &slot_config, &mount_config, &card);
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if (ret != ESP_OK) {
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if (ret == ESP_FAIL) {
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ESP_LOGE(TAG, "Failed to mount filesystem. "
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"If you want the card to be formatted, set the EXAMPLE_FORMAT_IF_MOUNT_FAILED menuconfig option.");
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} else {
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ESP_LOGE(TAG, "Failed to initialize the card (%s). "
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"Make sure SD card lines have pull-up resistors in place.", esp_err_to_name(ret));
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}
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return;
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}
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ESP_LOGI(TAG, "Filesystem mounted");
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// Card has been initialized, print its properties
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sdmmc_card_print_info(stdout, card);
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}
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void deinit_sd() {
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esp_vfs_fat_sdcard_unmount(mount_point, card);
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ESP_LOGI(TAG, "Card unmounted");
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}
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