Import fatfs R0.13b

[z180-stamp.git] / fatfs / source / diskio.c

/*-----------------------------------------------------------------------*/\r
/* Low level disk I/O module skeleton for FatFs     (C)ChaN, 2016        */\r
/*-----------------------------------------------------------------------*/\r
/* If a working storage control module is available, it should be        */\r
/* attached to the FatFs via a glue function rather than modifying it.   */\r
/* This is an example of glue functions to attach various exsisting      */\r
/* storage control modules to the FatFs module with a defined API.       */\r
/*-----------------------------------------------------------------------*/\r
\r
#include "diskio.h"		/* FatFs lower layer API */\r
\r
/* Definitions of physical drive number for each drive */\r
#define DEV_RAM		0	/* Example: Map Ramdisk to physical drive 0 */\r
#define DEV_MMC		1	/* Example: Map MMC/SD card to physical drive 1 */\r
#define DEV_USB		2	/* Example: Map USB MSD to physical drive 2 */\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Get Drive Status                                                      */\r
/*-----------------------------------------------------------------------*/\r
\r
DSTATUS disk_status (\r
	BYTE pdrv		/* Physical drive nmuber to identify the drive */\r
)\r
{\r
	DSTATUS stat;\r
	int result;\r
\r
	switch (pdrv) {\r
	case DEV_RAM :\r
		result = RAM_disk_status();\r
\r
		// translate the reslut code here\r
\r
		return stat;\r
\r
	case DEV_MMC :\r
		result = MMC_disk_status();\r
\r
		// translate the reslut code here\r
\r
		return stat;\r
\r
	case DEV_USB :\r
		result = USB_disk_status();\r
\r
		// translate the reslut code here\r
\r
		return stat;\r
	}\r
	return STA_NOINIT;\r
}\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Inidialize a Drive                                                    */\r
/*-----------------------------------------------------------------------*/\r
\r
DSTATUS disk_initialize (\r
	BYTE pdrv				/* Physical drive nmuber to identify the drive */\r
)\r
{\r
	DSTATUS stat;\r
	int result;\r
\r
	switch (pdrv) {\r
	case DEV_RAM :\r
		result = RAM_disk_initialize();\r
\r
		// translate the reslut code here\r
\r
		return stat;\r
\r
	case DEV_MMC :\r
		result = MMC_disk_initialize();\r
\r
		// translate the reslut code here\r
\r
		return stat;\r
\r
	case DEV_USB :\r
		result = USB_disk_initialize();\r
\r
		// translate the reslut code here\r
\r
		return stat;\r
	}\r
	return STA_NOINIT;\r
}\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Read Sector(s)                                                        */\r
/*-----------------------------------------------------------------------*/\r
\r
DRESULT disk_read (\r
	BYTE pdrv,		/* Physical drive nmuber to identify the drive */\r
	BYTE *buff,		/* Data buffer to store read data */\r
	DWORD sector,	/* Start sector in LBA */\r
	UINT count		/* Number of sectors to read */\r
)\r
{\r
	DRESULT res;\r
	int result;\r
\r
	switch (pdrv) {\r
	case DEV_RAM :\r
		// translate the arguments here\r
\r
		result = RAM_disk_read(buff, sector, count);\r
\r
		// translate the reslut code here\r
\r
		return res;\r
\r
	case DEV_MMC :\r
		// translate the arguments here\r
\r
		result = MMC_disk_read(buff, sector, count);\r
\r
		// translate the reslut code here\r
\r
		return res;\r
\r
	case DEV_USB :\r
		// translate the arguments here\r
\r
		result = USB_disk_read(buff, sector, count);\r
\r
		// translate the reslut code here\r
\r
		return res;\r
	}\r
\r
	return RES_PARERR;\r
}\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Write Sector(s)                                                       */\r
/*-----------------------------------------------------------------------*/\r
\r
DRESULT disk_write (\r
	BYTE pdrv,			/* Physical drive nmuber to identify the drive */\r
	const BYTE *buff,	/* Data to be written */\r
	DWORD sector,		/* Start sector in LBA */\r
	UINT count			/* Number of sectors to write */\r
)\r
{\r
	DRESULT res;\r
	int result;\r
\r
	switch (pdrv) {\r
	case DEV_RAM :\r
		// translate the arguments here\r
\r
		result = RAM_disk_write(buff, sector, count);\r
\r
		// translate the reslut code here\r
\r
		return res;\r
\r
	case DEV_MMC :\r
		// translate the arguments here\r
\r
		result = MMC_disk_write(buff, sector, count);\r
\r
		// translate the reslut code here\r
\r
		return res;\r
\r
	case DEV_USB :\r
		// translate the arguments here\r
\r
		result = USB_disk_write(buff, sector, count);\r
\r
		// translate the reslut code here\r
\r
		return res;\r
	}\r
\r
	return RES_PARERR;\r
}\r
\r
\r
\r
/*-----------------------------------------------------------------------*/\r
/* Miscellaneous Functions                                               */\r
/*-----------------------------------------------------------------------*/\r
\r
DRESULT disk_ioctl (\r
	BYTE pdrv,		/* Physical drive nmuber (0..) */\r
	BYTE cmd,		/* Control code */\r
	void *buff		/* Buffer to send/receive control data */\r
)\r
{\r
	DRESULT res;\r
	int result;\r
\r
	switch (pdrv) {\r
	case DEV_RAM :\r
\r
		// Process of the command for the RAM drive\r
\r
		return res;\r
\r
	case DEV_MMC :\r
\r
		// Process of the command for the MMC/SD card\r
\r
		return res;\r
\r
	case DEV_USB :\r
\r
		// Process of the command the USB drive\r
\r
		return res;\r
	}\r
\r
	return RES_PARERR;\r
}\r
\r