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https://github.com/espressif/esp-idf.git
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fb22c1f182
FATFS provides a disk status and disk initialize callback which were not implemented. Implementation has very low impact on SD/MMC speed and fixes issues, when trying to open file when SD card was removed from slot and not deinited. If disk_status returns STA_NOINIT, it will always continue with disk_initialize. If that returns 0, it will continue like everything is working normally. So there has to be the same check as in disk_status. Return of disk_initialize is always checked like this for STA_NOINIT or STA_PROTECT so if command fails, we return the STA_NOINIT. stat = disk_initialize(pdrv); if (stat & STA_NOINIT) return FR_NOT_READY; if (stat & STA_PROTECT) return FR_WRITE_PROTECTED; Closes IDF-4125
111 lines
2.7 KiB
C
111 lines
2.7 KiB
C
/*
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* SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "diskio_impl.h"
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#include "ffconf.h"
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#include "ff.h"
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#include "sdmmc_cmd.h"
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#include "esp_log.h"
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#include "esp_compiler.h"
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static sdmmc_card_t* s_cards[FF_VOLUMES] = { NULL };
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static const char* TAG = "diskio_sdmmc";
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//Check if SD/MMC card is present
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static DSTATUS ff_sdmmc_card_available(BYTE pdrv)
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{
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sdmmc_card_t* card = s_cards[pdrv];
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assert(card);
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esp_err_t err = sdmmc_get_status(card);
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if (unlikely(err != ESP_OK)) {
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ESP_LOGE(TAG, "Check status failed (0x%x)", err);
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return STA_NOINIT;
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}
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return 0;
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}
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/**
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* ff_sdmmc_status() and ff_sdmmc_initialize() return STA_NOINIT when sdmmc_get_status()
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* fails. This error value is checked throughout the FATFS code.
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* Both functions return 0 on success.
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*/
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DSTATUS ff_sdmmc_initialize (BYTE pdrv)
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{
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return ff_sdmmc_card_available(pdrv);
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}
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DSTATUS ff_sdmmc_status (BYTE pdrv)
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{
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return ff_sdmmc_card_available(pdrv);
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}
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DRESULT ff_sdmmc_read (BYTE pdrv, BYTE* buff, DWORD sector, UINT count)
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{
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sdmmc_card_t* card = s_cards[pdrv];
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assert(card);
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esp_err_t err = sdmmc_read_sectors(card, buff, sector, count);
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if (unlikely(err != ESP_OK)) {
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ESP_LOGE(TAG, "sdmmc_read_blocks failed (%d)", err);
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return RES_ERROR;
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}
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return RES_OK;
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}
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DRESULT ff_sdmmc_write (BYTE pdrv, const BYTE* buff, DWORD sector, UINT count)
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{
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sdmmc_card_t* card = s_cards[pdrv];
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assert(card);
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esp_err_t err = sdmmc_write_sectors(card, buff, sector, count);
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if (unlikely(err != ESP_OK)) {
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ESP_LOGE(TAG, "sdmmc_write_blocks failed (%d)", err);
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return RES_ERROR;
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}
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return RES_OK;
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}
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DRESULT ff_sdmmc_ioctl (BYTE pdrv, BYTE cmd, void* buff)
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{
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sdmmc_card_t* card = s_cards[pdrv];
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assert(card);
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switch(cmd) {
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case CTRL_SYNC:
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return RES_OK;
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case GET_SECTOR_COUNT:
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*((DWORD*) buff) = card->csd.capacity;
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return RES_OK;
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case GET_SECTOR_SIZE:
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*((WORD*) buff) = card->csd.sector_size;
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return RES_OK;
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case GET_BLOCK_SIZE:
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return RES_ERROR;
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}
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return RES_ERROR;
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}
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void ff_diskio_register_sdmmc(BYTE pdrv, sdmmc_card_t* card)
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{
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static const ff_diskio_impl_t sdmmc_impl = {
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.init = &ff_sdmmc_initialize,
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.status = &ff_sdmmc_status,
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.read = &ff_sdmmc_read,
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.write = &ff_sdmmc_write,
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.ioctl = &ff_sdmmc_ioctl
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};
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s_cards[pdrv] = card;
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ff_diskio_register(pdrv, &sdmmc_impl);
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}
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BYTE ff_diskio_get_pdrv_card(const sdmmc_card_t* card)
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{
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for (int i = 0; i < FF_VOLUMES; i++) {
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if (card == s_cards[i]) {
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return i;
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}
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}
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return 0xff;
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}
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