127 lines
3.6 KiB
C
127 lines
3.6 KiB
C
// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <stdlib.h>
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#include "esp_log.h"
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#include "esp_vfs.h"
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#include "esp_vfs_fat.h"
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#include "driver/sdmmc_host.h"
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#include "sdmmc_cmd.h"
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#include "diskio.h"
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static const char* TAG = "vfs_fat_sdmmc";
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static sdmmc_card_t* s_card = NULL;
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esp_err_t esp_vfs_fat_sdmmc_mount(const char* base_path,
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const sdmmc_host_t* host_config,
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const sdmmc_slot_config_t* slot_config,
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const esp_vfs_fat_sdmmc_mount_config_t* mount_config,
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sdmmc_card_t** out_card)
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{
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const size_t workbuf_size = 4096;
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void* workbuf = NULL;
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if (s_card != NULL) {
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return ESP_ERR_INVALID_STATE;
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}
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// enable SDMMC
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sdmmc_host_init();
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// enable card slot
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sdmmc_host_init_slot(host_config->slot, slot_config);
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s_card = malloc(sizeof(sdmmc_card_t));
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if (s_card == NULL) {
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return ESP_ERR_NO_MEM;
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}
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// probe and initialize card
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esp_err_t err = sdmmc_card_init(host_config, s_card);
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if (err != ESP_OK) {
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ESP_LOGD(TAG, "sdmmc_card_init failed 0x(%x)", err);
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goto fail;
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}
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if (out_card != NULL) {
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*out_card = s_card;
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}
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// connect SDMMC driver to FATFS
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ff_diskio_register_sdmmc(0, s_card);
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// connect FATFS to VFS
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FATFS* fs;
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err = esp_vfs_fat_register(base_path, "", mount_config->max_files, &fs);
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if (err == ESP_ERR_INVALID_STATE) {
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// it's okay, already registered with VFS
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} else if (err != ESP_OK) {
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ESP_LOGD(TAG, "esp_vfs_fat_register failed 0x(%x)", err);
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goto fail;
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}
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// Try to mount partition
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FRESULT res = f_mount(fs, "", 1);
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if (res != FR_OK) {
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err = ESP_FAIL;
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ESP_LOGW(TAG, "failed to mount card (%d)", res);
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if (!(res == FR_NO_FILESYSTEM && mount_config->format_if_mount_failed)) {
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goto fail;
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}
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ESP_LOGW(TAG, "partitioning card");
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DWORD plist[] = {100, 0, 0, 0};
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workbuf = malloc(workbuf_size);
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res = f_fdisk(0, plist, workbuf);
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if (res != FR_OK) {
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err = ESP_FAIL;
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ESP_LOGD(TAG, "f_fdisk failed (%d)", res);
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goto fail;
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}
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ESP_LOGW(TAG, "formatting card");
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res = f_mkfs("", FM_ANY, s_card->csd.sector_size, workbuf, workbuf_size);
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if (res != FR_OK) {
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err = ESP_FAIL;
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ESP_LOGD(TAG, "f_mkfs failed (%d)", res);
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goto fail;
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}
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free(workbuf);
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ESP_LOGW(TAG, "mounting again");
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res = f_mount(fs, "", 0);
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if (res != FR_OK) {
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err = ESP_FAIL;
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ESP_LOGD(TAG, "f_mount failed after formatting (%d)", res);
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goto fail;
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}
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}
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return ESP_OK;
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fail:
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free(workbuf);
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esp_vfs_unregister(base_path);
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free(s_card);
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s_card = NULL;
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return err;
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}
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esp_err_t esp_vfs_fat_sdmmc_unmount()
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{
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if (s_card == NULL) {
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return ESP_ERR_INVALID_STATE;
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}
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// unmount
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f_mount(0, "", 0);
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// release SD driver
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free(s_card);
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s_card = NULL;
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sdmmc_host_deinit();
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return esp_vfs_fat_unregister();
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}
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