169 lines
4.9 KiB
C
169 lines
4.9 KiB
C
/*-----------------------------------------------------------------------*/
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/* Low level disk I/O module SKELETON for FatFs (C)ChaN, 2019 */
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/*-----------------------------------------------------------------------*/
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/* If a working storage control module is available, it should be */
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/* attached to the FatFs via a glue function rather than modifying it. */
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/* This is an example of glue functions to attach various exsisting */
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/* storage control modules to the FatFs module with a defined API. */
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/*-----------------------------------------------------------------------*/
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#include "ff.h" /* Obtains integer types */
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#include "diskio.h" /* Declarations of disk functions */
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#include <stdio.h>
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#include "main.h"
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#include "stm32f4xx_hal.h"
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/*-----------------------------------------------------------------------*/
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/* Get Drive Status */
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/*-----------------------------------------------------------------------*/
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DSTATUS disk_status (
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BYTE pdrv /* Physical drive nmuber to identify the drive */
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)
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{
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DSTATUS stat = STA_NOINIT;
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HAL_StatusTypeDef card_result = HAL_SD_GetCardState(&hsd);
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if(card_result == HAL_SD_CARD_TRANSFER) {
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stat &= ~STA_NOINIT;
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}
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// printf("card stat: %d\n", card_result);
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return stat;
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}
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/*-----------------------------------------------------------------------*/
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/* Inidialize a Drive */
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/*-----------------------------------------------------------------------*/
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DSTATUS disk_initialize (
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BYTE pdrv /* Physical drive nmuber to identify the drive */
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)
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{
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DSTATUS stat = STA_NOINIT;
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HAL_StatusTypeDef init_result = HAL_SD_InitCard(&hsd);
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if (init_result == HAL_OK) {
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stat &= ~STA_NOINIT;
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}
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// printf("card init: %d\n", init_result);
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return stat;
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}
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/*-----------------------------------------------------------------------*/
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/* Read Sector(s) */
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/*-----------------------------------------------------------------------*/
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DRESULT disk_read (
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BYTE pdrv, /* Physical drive nmuber to identify the drive */
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BYTE *buff, /* Data buffer to store read data */
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LBA_t sector, /* Start sector in LBA */
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UINT count /* Number of sectors to read */
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)
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{
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DRESULT res = RES_OK;
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uint32_t timeout = 100000;
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HAL_StatusTypeDef read_result = HAL_SD_ReadBlocks(&hsd, buff, sector, count, 500);
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if (read_result == HAL_OK) {
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while(HAL_SD_GetCardState(&hsd) != HAL_SD_CARD_TRANSFER) { //wait busy
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timeout --;
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if (timeout == 0) {
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res = RES_ERROR;
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}
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}
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} else {
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res = RES_ERROR;
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}
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// printf("card read %d block%s @ %d: %d\n", count, count == 1 ? "" : "s", sector, read_result);
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return res;
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}
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/*-----------------------------------------------------------------------*/
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/* Write Sector(s) */
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/*-----------------------------------------------------------------------*/
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#if FF_FS_READONLY == 0
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DRESULT disk_write (
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BYTE pdrv, /* Physical drive nmuber to identify the drive */
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const BYTE *buff, /* Data to be written */
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LBA_t sector, /* Start sector in LBA */
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UINT count /* Number of sectors to write */
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)
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{
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DRESULT res = RES_OK;
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uint32_t timeout = 100000;
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HAL_StatusTypeDef write_result = HAL_SD_WriteBlocks(&hsd, (uint8_t *)buff, sector, count, 500);
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if (write_result == HAL_OK) {
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while(HAL_SD_GetCardState(&hsd) != HAL_SD_CARD_TRANSFER) { //wait busy
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timeout --;
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if (timeout == 0) {
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res = RES_ERROR;
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}
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}
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} else {
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res = RES_ERROR;
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}
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// printf("card write %d block%s @ %d: %d\n", count, count == 1 ? "" : "s", sector, write_result);
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return res;
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}
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#endif
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/*-----------------------------------------------------------------------*/
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/* Miscellaneous Functions */
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/*-----------------------------------------------------------------------*/
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DRESULT disk_ioctl (
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BYTE pdrv, /* Physical drive nmuber (0..) */
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BYTE cmd, /* Control code */
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void *buff /* Buffer to send/receive control data */
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)
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{
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DRESULT res = RES_ERROR;
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HAL_SD_CardInfoTypeDef card_info;
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switch (cmd) {
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/* Make sure that no pending write process */
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case CTRL_SYNC:
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res = RES_OK;
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break;
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/* Get number of sectors on the disk (DWORD) */
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case GET_SECTOR_COUNT:
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HAL_SD_GetCardInfo(&hsd, &card_info);
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*(DWORD *)buff = card_info.LogBlockNbr;
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res = RES_OK;
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break;
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/* Get R/W sector size (WORD) */
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case GET_SECTOR_SIZE:
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/* Get erase block size in unit of sector (DWORD) */
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case GET_BLOCK_SIZE:
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HAL_SD_GetCardInfo(&hsd, &card_info);
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*(WORD *)buff = card_info.LogBlockSize;
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res = RES_OK;
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break;
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default:
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res = RES_PARERR;
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}
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return res;
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}
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