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-
- #include <stdio.h>
- #include <string.h>
- #include <sys/unistd.h>
- #include <sys/stat.h>
- #include "esp_err.h"
- #include "esp_log.h"
- #include "esp_vfs_fat.h"
- #include "driver/sdmmc_host.h"
- #include "driver/sdspi_host.h"
- #include "sdmmc_cmd.h"
- #include "spiffs/spiffs_vfs.h"
- #include "storage.h"
-
- static const char *tag = "storage";
-
- // This example can use SDMMC and SPI peripherals to communicate with SD card.
- // By default, SDMMC peripheral is used.
- // To enable SPI mode, uncomment the following line:
-
- //#define USE_SPI_MODE
-
- // When testing SD and SPI modes, keep in mind that once the card has been
- // initialized in SPI mode, it can not be reinitialized in SD mode without
- // toggling power to the card.
-
- #ifdef USE_SPI_MODE
- // Pin mapping when using SPI mode.
- // With this mapping, SD card can be used both in SPI and 1-line SD mode.
- // Note that a pull-up on CS line is required in SD mode.
- #define PIN_NUM_MISO ((gpio_num_t)2)
- #define PIN_NUM_MOSI ((gpio_num_t)15)
- #define PIN_NUM_CLK ((gpio_num_t)14)
- #define PIN_NUM_CS ((gpio_num_t)13)
- #endif //USE_SPI_MODE
-
- int sdcard_init()
- {
- #ifndef USE_SPI_MODE
- ESP_LOGI(tag, "Using SDMMC peripheral");
- sdmmc_host_t host = SDMMC_HOST_DEFAULT();
-
- // This initializes the slot without card detect (CD) and write protect (WP) signals.
- // Modify slot_config.gpio_cd and slot_config.gpio_wp if your board has these signals.
- sdmmc_slot_config_t slot_config = SDMMC_SLOT_CONFIG_DEFAULT();
-
- // To use 1-line SD mode, uncomment the following line:
- slot_config.width = 1;
-
- // GPIOs 15, 2, 4, 12, 13 should have external 10k pull-ups.
- // Internal pull-ups are not sufficient. However, enabling internal pull-ups
- // does make a difference some boards, so we do that here.
- gpio_set_pull_mode((gpio_num_t)15, GPIO_PULLUP_ONLY); // CMD, needed in 4- and 1- line modes
- gpio_set_pull_mode((gpio_num_t)2, GPIO_PULLUP_ONLY); // D0, needed in 4- and 1-line modes
- //gpio_set_pull_mode((gpio_num_t)4, GPIO_PULLUP_ONLY); // D1, needed in 4-line mode only
- //gpio_set_pull_mode((gpio_num_t)12, GPIO_PULLUP_ONLY); // D2, needed in 4-line mode only
- gpio_set_pull_mode((gpio_num_t)13, GPIO_PULLUP_ONLY); // D3, needed in 4- and 1-line modes
-
- #else
- ESP_LOGI(TAG, "Using SPI peripheral");
-
- sdmmc_host_t host = SDSPI_HOST_DEFAULT();
- sdspi_slot_config_t slot_config = SDSPI_SLOT_CONFIG_DEFAULT();
- slot_config.gpio_miso = PIN_NUM_MISO;
- slot_config.gpio_mosi = PIN_NUM_MOSI;
- slot_config.gpio_sck = PIN_NUM_CLK;
- slot_config.gpio_cs = PIN_NUM_CS;
- // This initializes the slot without card detect (CD) and write protect (WP) signals.
- // Modify slot_config.gpio_cd and slot_config.gpio_wp if your board has these signals.
- #endif //USE_SPI_MODE
-
- // Options for mounting the filesystem.
- // If format_if_mount_failed is set to true, SD card will be partitioned and
- // formatted in case when mounting fails.
- esp_vfs_fat_sdmmc_mount_config_t mount_config = {
- .format_if_mount_failed = false,
- .max_files = 5,
- .allocation_unit_size = 16 * 1024
- };
-
- // Use settings defined above to initialize SD card and mount FAT filesystem.
- // Note: esp_vfs_fat_sdmmc_mount is an all-in-one convenience function.
- // Please check its source code and implement error recovery when developing
- // production applications.
- sdmmc_card_t* card;
- esp_err_t ret = esp_vfs_fat_sdmmc_mount("/sdcard", &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 format_if_mount_failed = true.");
- } 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 -1;
- }
-
- // Card has been initialized, print its properties
- sdmmc_card_print_info(stdout, card);
-
- return 0;
- }
-
- int storage_init()
- {
- int ret = 0;
-
- vfs_spiffs_register();
- if (spiffs_is_mounted) {
- ESP_LOGI(tag, "File system mounted.");
- } else {
- ESP_LOGE(tag, "Error mounting file system.");
- ret += 1 << 1;
- }
-
- if (sdcard_init() == 0) {
- ESP_LOGI(tag, "SD card mounted.");
- } else {
- ESP_LOGE(tag, "Error mounting SD card.");
- ret += 1 << 2;
- }
-
- return ret;
- }
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