297 lines
8.8 KiB
C
297 lines
8.8 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 "stddef.h"
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/* Definitions of physical drive number for each drive */
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#define DEV_RAM 0 /* Example: Map Ramdisk to physical drive 0 */
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#define DEV_MMC 1 /* Example: Map MMC/SD card to physical drive 1 */
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#define DEV_USB 2 /* Example: Map USB MSD to physical drive 2 */
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FATFS_DiskioDriverTypeDef pDiskioDriver = {
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.RAM_disk_status = NULL,
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.MMC_disk_status = NULL,
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.USB_disk_status = NULL,
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.RAM_disk_initialize = NULL,
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.MMC_disk_initialize = NULL,
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.USB_disk_initialize = NULL,
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.RAM_disk_read = NULL,
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.MMC_disk_read = NULL,
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.USB_disk_read = NULL,
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.RAM_disk_write = NULL,
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.MMC_disk_write = NULL,
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.USB_disk_write = NULL,
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.RAM_disk_ioctl = NULL,
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.MMC_disk_ioctl = NULL,
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.USB_disk_ioctl = NULL,
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.Translate_Result_Code = NULL,
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};
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/*-----------------------------------------------------------------------*/
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/* init driver callback */
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/*-----------------------------------------------------------------------*/
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void disk_driver_callback_init(FATFS_DiskioDriverTypeDef *pNewDriver)
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{
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pDiskioDriver.RAM_disk_status = pNewDriver->RAM_disk_status;
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pDiskioDriver.MMC_disk_status = pNewDriver->MMC_disk_status;
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pDiskioDriver.USB_disk_status = pNewDriver->USB_disk_status;
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pDiskioDriver.RAM_disk_initialize = pNewDriver->RAM_disk_initialize;
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pDiskioDriver.MMC_disk_initialize = pNewDriver->MMC_disk_initialize;
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pDiskioDriver.USB_disk_initialize = pNewDriver->USB_disk_initialize;
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pDiskioDriver.RAM_disk_read = pNewDriver->RAM_disk_read;
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pDiskioDriver.MMC_disk_read = pNewDriver->MMC_disk_read;
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pDiskioDriver.USB_disk_read = pNewDriver->USB_disk_read;
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pDiskioDriver.RAM_disk_write = pNewDriver->RAM_disk_write;
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pDiskioDriver.MMC_disk_write = pNewDriver->MMC_disk_write;
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pDiskioDriver.USB_disk_write = pNewDriver->USB_disk_write;
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pDiskioDriver.RAM_disk_ioctl = pNewDriver->RAM_disk_ioctl;
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pDiskioDriver.MMC_disk_ioctl = pNewDriver->MMC_disk_ioctl;
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pDiskioDriver.USB_disk_ioctl = pNewDriver->USB_disk_ioctl;
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pDiskioDriver.Translate_Result_Code = pNewDriver->Translate_Result_Code;
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}
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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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int result = 0;
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switch (pdrv) {
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case DEV_RAM:
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if (pDiskioDriver.RAM_disk_status) {
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result = pDiskioDriver.RAM_disk_status();
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}
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break;
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case DEV_MMC:
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if (pDiskioDriver.MMC_disk_status) {
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result = pDiskioDriver.MMC_disk_status();
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}
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break;
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case DEV_USB:
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if (pDiskioDriver.USB_disk_status) {
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result = pDiskioDriver.USB_disk_status();
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}
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break;
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default:
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return STA_NOINIT;
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}
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/* translate the reslut code here */
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if (pDiskioDriver.Translate_Result_Code) {
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stat = pDiskioDriver.Translate_Result_Code(result);
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}
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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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int result = 0;
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switch (pdrv) {
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case DEV_RAM:
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if (pDiskioDriver.RAM_disk_initialize) {
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result = pDiskioDriver.RAM_disk_initialize();
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}
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break;
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case DEV_MMC:
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if (pDiskioDriver.MMC_disk_initialize) {
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result = pDiskioDriver.MMC_disk_initialize();
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}
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break;
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case DEV_USB:
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if (pDiskioDriver.USB_disk_initialize) {
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result = pDiskioDriver.USB_disk_initialize();
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}
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break;
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default:
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return STA_NOINIT;
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}
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/* translate the reslut code here */
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if (pDiskioDriver.Translate_Result_Code) {
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stat = pDiskioDriver.Translate_Result_Code(result);
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}
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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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DSTATUS stat = STA_NOINIT;
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int result = 0;
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switch (pdrv) {
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case DEV_RAM:
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if (pDiskioDriver.RAM_disk_read) {
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result = pDiskioDriver.RAM_disk_read(buff, sector, count);
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}
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break;
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case DEV_MMC:
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if (pDiskioDriver.MMC_disk_read) {
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result = pDiskioDriver.MMC_disk_read(buff, sector, count);
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}
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break;
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case DEV_USB:
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if (pDiskioDriver.USB_disk_read) {
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result = pDiskioDriver.USB_disk_read(buff, sector, count);
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}
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break;
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default:
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return RES_PARERR;
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}
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/* translate the reslut code here */
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if (pDiskioDriver.Translate_Result_Code) {
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stat = pDiskioDriver.Translate_Result_Code(result);
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}
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return stat;
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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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DSTATUS stat = STA_NOINIT;
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int result = 0;
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switch (pdrv) {
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case DEV_RAM:
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if (pDiskioDriver.RAM_disk_write) {
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result = pDiskioDriver.RAM_disk_write(buff, sector, count);
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}
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break;
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case DEV_MMC:
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if (pDiskioDriver.MMC_disk_write) {
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result = pDiskioDriver.MMC_disk_write(buff, sector, count);
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}
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break;
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case DEV_USB:
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if (pDiskioDriver.USB_disk_write) {
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result = pDiskioDriver.USB_disk_write(buff, sector, count);
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}
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break;
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default:
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return RES_PARERR;
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}
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/* translate the reslut code here */
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if (pDiskioDriver.Translate_Result_Code) {
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stat = pDiskioDriver.Translate_Result_Code(result);
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}
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return stat;
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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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DSTATUS stat = STA_NOINIT;
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int result = 0;
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switch (pdrv) {
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case DEV_RAM:
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if (pDiskioDriver.RAM_disk_ioctl) {
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result = pDiskioDriver.RAM_disk_ioctl(cmd, buff);
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}
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break;
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case DEV_MMC:
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if (pDiskioDriver.MMC_disk_ioctl) {
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result = pDiskioDriver.MMC_disk_ioctl(cmd, buff);
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}
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break;
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case DEV_USB:
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if (pDiskioDriver.USB_disk_ioctl) {
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result = pDiskioDriver.USB_disk_ioctl(cmd, buff);
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}
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break;
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default:
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return RES_PARERR;
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}
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/* translate the reslut code here */
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if (pDiskioDriver.Translate_Result_Code) {
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stat = pDiskioDriver.Translate_Result_Code(result);
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}
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return stat;
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}
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