OVMS3-idf/components/sdmmc/include/sdmmc_cmd.h
2017-01-09 04:51:24 +08:00

77 lines
2.7 KiB
C

// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#pragma once
#include <stdio.h>
#include "esp_err.h"
#include "driver/sdmmc_types.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* Probe and initialize SD/MMC card using given host
*
* @note Only SD cards (SDSC and SDHC/SDXC) are supported now.
* Support for MMC/eMMC cards will be added later.
*
* @param host pointer to structure defining host controller
* @param out_card pointer to structure which will receive information about the card when the function completes
* @return
* - ESP_OK on success
* - One of the error codes from SDMMC host controller
*/
esp_err_t sdmmc_card_init(const sdmmc_host_t* host,
sdmmc_card_t* out_card);
/**
* @brief Print information about the card to a stream
* @param stream stream obtained using fopen or fdopen
* @param card card information structure initialized using sdmmc_card_init
*/
void sdmmc_card_print_info(FILE* stream, const sdmmc_card_t* card);
/**
* Write given number of sectors to SD/MMC card
*
* @param card pointer to card information structure previously initialized using sdmmc_card_init
* @param src pointer to data buffer to read data from; data size must be equal to sector_count * card->csd.sector_size
* @param start_sector sector where to start writing
* @param sector_count number of sectors to write
* @return
* - ESP_OK on success
* - One of the error codes from SDMMC host controller
*/
esp_err_t sdmmc_write_sectors(sdmmc_card_t* card, const void* src,
size_t start_sector, size_t sector_count);
/**
* Write given number of sectors to SD/MMC card
*
* @param card pointer to card information structure previously initialized using sdmmc_card_init
* @param dst pointer to data buffer to write into; buffer size must be at least sector_count * card->csd.sector_size
* @param start_sector sector where to start reading
* @param sector_count number of sectors to read
* @return
* - ESP_OK on success
* - One of the error codes from SDMMC host controller
*/
esp_err_t sdmmc_read_sectors(sdmmc_card_t* card, void* dst,
size_t start_sector, size_t sector_count);
#ifdef __cplusplus
}
#endif