FATFS format
Posted: Tue Dec 04, 2018 4:31 pm
I want to add an option for the user that will allow fatfs format to remove all files. But I can't find the command to format in IDF
http://elm-chan.org/fsw/ff/00index_e.html
I have done it a long time ago .... the core is this
- typedef struct
- {
- uint8_t pdrv;
- sdmmc_card_t card;
- char* base;
- } sd_data_t;
- typedef struct
- {
- size_t unit_size;
- } sd_format_data_t;
- static bool sd_format(const sd_data_t* sd_data, const sd_format_data_t* format_data)
- {
- ESP_LOGI(log_tag, "Format SD card %u", sd_data->pdrv);
- bool flag = false;
- DWORD plist[] = {100, 0, 0, 0};
- FRESULT res;
- size_t buffer_size = FF_MAX_SS;
- char* buffer = malloc(buffer_size);
- if ((res = f_fdisk(sd_data->pdrv, plist, (void*)buffer)) == FR_OK)
- {
- char drv[3] = {(char)('0' + sd_data->pdrv), ':', '\0'};
- // printf("Format SD card 2\n");
- if ((res = f_mkfs(drv, FM_FAT32, esp_vfs_fat_get_allocation_unit_size(sd_data->card.csd.sector_size, format_data->unit_size), (void*)buffer, buffer_size)) == FR_OK)
- flag = true;
- else
- {ESP_LOGE(log_tag, "f_mkfs failed with %d", res);}
- }
- else
- {ESP_LOGE(log_tag, "f_fdisk failed with %d", res);}
- free(buffer);
- ESP_LOGI(log_tag, "Format of SD card %u finished", sd_data->pdrv);
- return flag;
- }
- static bool do_sd_init(const char* base, const sdmmc_host_t* host, const sdspi_slot_config_t* slot, sd_data_t* sd_data, const sd_format_data_t* format_data)
- {
- bool flag = false;
- sd_data->pdrv = 0xFF;
- esp_err_t err;
- bool host_init = false;
- bool vfs_register = false;
- bool diskio_register = false;
- FATFS* fs = NULL;
- char drv[3];
- sd_data->base = strdup(base);
- // connect SDMMC driver to FATFS
- if ((err = ff_diskio_get_drive(&sd_data->pdrv)) == ESP_OK && sd_data->pdrv != 0xFF)
- {
- drv[0] = (char)('0' + sd_data->pdrv);
- drv[1] = ':';
- drv[2] = '\0';
- if ((err = (*host->init)()) == ESP_OK)
- {
- host_init = true;
- // configure SD slot
- if ((err = sdspi_host_init_slot(host->slot, slot)) == ESP_OK)
- {
- // probe and initialize card
- if ((err = sdmmc_card_init(host, &sd_data->card) == ESP_OK))
- {
- diskio_register = true;
- ff_diskio_register_sdmmc(sd_data->pdrv, &sd_data->card);
- // connect FATFS to VFS
- if ((err = esp_vfs_fat_register(base, drv, 16, &fs)) == ESP_OK)
- {
- vfs_register = true;
- if (!format_data || sd_format(sd_data, format_data))
- {
- FRESULT res;
- if ((res = f_mount(fs, drv, 1)) == FR_OK)
- {
- flag = true;
- ESP_LOGI(log_tag, "SD card %u mounted", sd_data->pdrv);
- }
- else
- {ESP_LOGE(log_tag, "f_mount failed with %d", res);}
- }
- else
- {ESP_LOGE(log_tag, "format_sd failed");}
- }
- else
- {ESP_LOGE(log_tag, "esp_vfs_fat_register failed with '%s (%d)'", esp_err_to_name(err), err);}
- }
- else
- ESP_LOGE(log_tag, "sdmmc_card_init failed with '%s (%d)'", esp_err_to_name(err), err);
- }
- else
- {ESP_LOGE(log_tag, "sdspi_host_init_slot failed with '%s (%d)'", esp_err_to_name(err), err);}
- }
- else
- {ESP_LOGE(log_tag, "host->init() failed with '%s (%d)'", esp_err_to_name(err), err);}
- }
- else
- {ESP_LOGE(log_tag, "ff_diskio_get_drive failed with '%s (%d)'", esp_err_to_name(err), err);}
- if (!flag)
- {
- if (host_init)
- host->deinit();
- if (fs)
- f_mount(NULL, drv, 0);
- if (vfs_register)
- esp_vfs_fat_unregister_path(base);
- if (diskio_register)
- ff_diskio_unregister(sd_data->pdrv);
- }
- is_init = flag;
- return flag;
- }
- bool sd_init(const char* base, const sdmmc_host_t* host, const sdspi_slot_config_t* slot, sd_data_t* sd_data)
- {
- return do_sd_init(base, host, slot, sd_data, NULL);
- }
- bool sd_init_and_format(const char* base, const sdmmc_host_t* host, const sdspi_slot_config_t* slot, sd_data_t* sd_data, const sd_format_data_t* format_data)
- {
- return do_sd_init(base, host, slot, sd_data, format_data);
- }