[问答]

ESP32S3无法挂载EMMC芯片是为什么？

215 emmc

问答对人有帮助，内容完整，我也想知道答案 0 硬件：ESP32-S3-DevKitC-1 环境：ubuntu+vscode IDF版本：v4.4 问题描述：我想使用一个8线的mmc芯片作为外部存储，但是当我稍微修改例程后，发现无法挂载文件系统代码： Code: [Select all] [Expand/Collapse] #include #include #include #include #include "esp_err.h" #include "esp_log.h" #include "esp_vfs_fat.h" #include "driver/sdspi_host.h" #include "driver/spi_common.h" #include "sdmmc_cmd.h" #include "sdkconfig.h" // #include "driver/gpio.h" #include "driver/sdmmc_host.h" static const char TAG = "SD_EMMC"; #define MOUNT_POINT "/sdcard" void MY_emmc_test(void) { // sdmmc_host_init();* esp_err_t ret; // 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 = true, .max_files = 5, .allocation_unit_size = 16 * 1024, }; sdmmc_card_t card; const char mount_point[ = MOUNT_POINT; ESP_LOGI(TAG, "Initializing SD card"); // Use settings defined above to initialize SD card and mount FAT filesystem.* // Note: esp_vfs_fat_sdmmc/sdspi_mount is all-in-one convenience functions. // Please check its source code and implement error recovery when developing // production applications. ESP_LOGI(TAG, "Using SDMMC peripheral"); sdmmc_host_t host = SDMMC_HOST_DEFAULT(); host.slot = SDMMC_HOST_SLOT_0; host.flags = SDMMC_HOST_FLAG_8BIT; // 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(); // On chips where the GPIOs used for SD card can be configured, set them in // the slot_config structure: sdmmc_slot_config_t slot_config = { .clk = GPIO_NUM_17, .cmd = GPIO_NUM_8, .d0 = GPIO_NUM_14, .d1 = GPIO_NUM_13, .d2 = GPIO_NUM_12, .d3 = GPIO_NUM_11, .d4 = GPIO_NUM_10, .d5 = GPIO_NUM_9, .d6 = GPIO_NUM_46, .d7 = GPIO_NUM_3, .cd = SDMMC_SLOT_NO_CD, .wp = SDMMC_SLOT_NO_WP, .width = SDMMC_SLOT_WIDTH_DEFAULT, .flags = 0, }; //slot_config.RST is GPIO_NUM_18;RST always hign level; gpio_set_level(GPIO_NUM_18, 1); // To use 1-line SD mode, change this to 1: slot_config.width = 8; // Enable internal pullups on enabled pins. The internal pullups // are insufficient however, please make sure 10k external pullups are // connected on the bus. This is for debug / example purpose only. slot_config.flags \|= SDMMC_SLOT_FLAG_INTERNAL_PULLUP; // sdmmc_host_init_slot(SDMMC_HOST_SLOT_0, &slot_config); // sdmmc_card_init(&host, &card); ESP_LOGI(TAG, "Mounting filesystem"); 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, "Filesystem mounted"); // Card has been initialized, print its properties sdmmc_card_print_info(stdout, card); // Use POSIX and C standard library functions to work with files: // First create a file. const char file_hello = MOUNT_POINT "/hello.txt"; ESP_LOGI(TAG, "Opening file %s", file_hello); FILE f = fopen(file_hello, "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"); const char file_foo = MOUNT_POINT "/foo.txt"; // Check if destination file exists before renaming* struct stat st; if (stat(file_foo, &st) == 0) { // Delete it if it exists unlink(file_foo); } // Rename original file ESP_LOGI(TAG, "Renaming file %s to %s", file_hello, file_foo); if (rename(file_hello, file_foo) != 0) { ESP_LOGE(TAG, "Rename failed"); return; } // Open renamed file for reading ESP_LOGI(TAG, "Reading file %s", file_foo); f = fopen(file_foo, "r"); if (f == NULL) { ESP_LOGE(TAG, "Failed to open file for reading"); return; } // Read a line from file char line[64; fgets(line, sizeof(line), f); fclose(f); // Strip newline char pos = strchr(line, 'n'); if (pos) { pos = ''; } ESP_LOGI(TAG, "Read from file: '%s'", line); // All done, unmount partition and disable SDMMC peripheral esp_vfs_fat_sdcard_unmount(mount_point, card); ESP_LOGI(TAG, "Card unmounted"); } GeSHi © Codebox Plus Extension 使用以上代码后串口打印的信息是： Code: [Select all] [Expand/Collapse] I (0) cpu_start: App cpu up. I (222) cpu_start: Pro cpu start user code I (222) cpu_start: cpu freq: 160000000 I (222) cpu_start: Application information: I (225) cpu_start: Project name: main I (230) cpu_start: App version: 3577b0a-dirty I (235) cpu_start: Compile time: Nov 24 2021 13:39:56 I (241) cpu_start: ELF file SHA256: 1ac03af898982e4b... I (247) cpu_start: ESP-IDF: v4.4-dev-3235-g3e370c4296-dirty I (254) heap_init: Initializing. RAM available for dynamic allocation: I (262) heap_init: At 3FC94B58 len 0004B4A8 (301 KiB): D/IRAM I (268) heap_init: At 3FCE0000 len 0000EE34 (59 KiB): STACK/DRAM I (275) heap_init: At 3FCF0000 len 00008000 (32 KiB): DRAM I (281) spiram: Adding pool of 2048K of external SPI memory to heap allocator I (289) spi_flash: detected chip: generic I (293) spi_flash: flash io: dio I (298) cpu_start: Starting scheduler on PRO CPU. I (0) cpu_start: Starting scheduler on APP CPU. I (328) spiram: Reserving pool of 64K of internal memory for DMA/internal allocations I (328) SD_EMMC: Initializing SD card I (338) SD_EMMC: Using SDMMC peripheral I (338) SD_EMMC: Mounting filesystem I (348) gpio: GPIO[17]\| InputEn: 0\| OutputEn: 0\| OpenDrain: 0\| Pullup: 1\| Pulldown: 0\| Intr:0 I (358) gpio: GPIO[8]\| InputEn: 0\| OutputEn: 0\| OpenDrain: 0\| Pullup: 1\| Pulldown: 0\| Intr:0 I (368) gpio: GPIO[14]\| InputEn: 0\| OutputEn: 0\| OpenDrain: 0\| Pullup: 1\| Pulldown: 0\| Intr:0 I (368) gpio: GPIO[13]\| InputEn: 0\| OutputEn: 0\| OpenDrain: 0\| Pullup: 1\| Pulldown: 0\| Intr:0 I (378) gpio: GPIO[12]\| InputEn: 0\| OutputEn: 0\| OpenDrain: 0\| Pullup: 1\| Pulldown: 0\| Intr:0 I (388) gpio: GPIO[11]\| InputEn: 0\| OutputEn: 1\| OpenDrain: 0\| Pullup: 0\| Pulldown: 0\| Intr:0 I (398) gpio: GPIO[10]\| InputEn: 0\| OutputEn: 0\| OpenDrain: 0\| Pullup: 1\| Pulldown: 0\| Intr:0 I (408) gpio: GPIO[9]\| InputEn: 0\| OutputEn: 0\| OpenDrain: 0\| Pullup: 1\| Pulldown: 0\| Intr:0 I (418) gpio: GPIO[46]\| InputEn: 0\| OutputEn: 0\| OpenDrain: 0\| Pullup: 1\| Pulldown: 0\| Intr:0 I (428) gpio: GPIO[3]\| InputEn: 0\| OutputEn: 0\| OpenDrain: 0\| Pullup: 1\| Pulldown: 0\| Intr:0 I (498) gpio: GPIO[11]\| InputEn: 0\| OutputEn: 0\| OpenDrain: 0\| Pullup: 1\| Pulldown: 0\| Intr:0 E (498) sdmmc_cmd: sdmmc_read_sectors_dma: sdmmc_send_cmd returned 0x109 E (508) diskio_sdmmc: sdmmc_read_blocks failed (265) W (508) vfs_fat_sdmmc: failed to mount card (1) E (518) vfs_fat_sdmmc: mount_to_vfs failed (0xffffffff). E (518) SD_EMMC: Failed to mount filesystem. If you want the card to be formatted, set the EXAMPLE_FORMAT_IF_MOUNT_FAILED menuconfig option. 0
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