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174 lines
3.9 KiB
174 lines
3.9 KiB
/*-----------------------------------------------------------------------*/
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/* Low level disk I/O module skeleton for FatFs (C)ChaN, 2016 */
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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 "diskio.h" /* FatFs lower layer API */
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/* Definitions of physical drive number for each drive */
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#define DEV_SD 0 /* Example: Map MMC/SD card to physical drive 1 */
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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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if(pdrv == DEV_SD){
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return RES_OK;
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};
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return STA_NODISK;
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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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int result;
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if(pdrv == DEV_SD){
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result=sd_init();
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if(result != 0) {
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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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return STA_NODISK;
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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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DWORD 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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uint8_t res=0;
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if(pdrv == DEV_SD){
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res=sd_read((uint8_t*)buff,sector,count);
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if(res){
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return RES_ERROR;
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}else{
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return RES_OK;
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}
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};
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return RES_PARERR;
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}
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/*-----------------------------------------------------------------------*/
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/* Write Sector(s) */
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/*-----------------------------------------------------------------------*/
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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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DWORD 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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uint8_t res;
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if(pdrv == DEV_SD){
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res=sd_write((uint8_t*)buff,sector,count);
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if(res){
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return RES_ERROR;
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}else{
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return RES_OK;
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}
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};
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return RES_PARERR;
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}
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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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if(pdrv == DEV_SD){
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switch (cmd)
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{
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case CTRL_SYNC:
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res = RES_OK;
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break;
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case GET_SECTOR_SIZE:
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*(DWORD*)buff = 512;
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res= RES_OK;
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break;
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case GET_BLOCK_SIZE:
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*(DWORD*)buff = 512;
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res= RES_OK;
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break;
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}
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return res;
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};
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return(RES_OK);
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};
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DWORD get_fattime (void) {
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uint32_t d,ret;
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d=2018-1980;
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ret=(d << 25);
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d=02;
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ret |= (d << 21);
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d=12;
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d=((d > 0) && (d < 32)) ? d : 1;
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ret |= (d << 16);
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d=12;
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d=((d > 0) && (d < 25)) ? d : 1;
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ret |= (d << 11);
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d=25;
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d=((d > 0) && (d < 60)) ? d : 1;
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ret |= (d << 5);
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d=30 / 2;
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d=((d > 0) && (d < 30)) ? d : 1;
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ret |= d ;
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return ret;
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};
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