A27系列优化I2C/RTC处理，新增版本A270Y

A27-AMTLDR/Src/fs/diskio.c

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+/*-----------------------------------------------------------------------*/
+/* Low level disk I/O module skeleton for FatFs     (C)ChaN, 2007        */
+/*-----------------------------------------------------------------------*/
+/* This is a stub disk I/O module that acts as front end of the existing */
+/* disk I/O modules and attach it to FatFs module with common interface. */
+/*-----------------------------------------------------------------------*/
+
+#include "diskio.h"
+
+//#include <windows.h>
+
+//#include "sdfmd.h"
+//#include <ethdbg.h>
+//#include <halether.h>
+
+//extern DWORD SDInitialize(void);
+//extern DWORD WriteSector(PBYTE pData, DWORD dwStartSector, DWORD dwNumber);
+//extern DWORD ReadSector(PBYTE pData, DWORD dwStartSector, DWORD dwNumber);
+//extern void Delay(UINT32 count);
+
+
+
+extern void lcd_printstr(char* str);
+#define printf lcd_printstr
+/*-----------------------------------------------------------------------*/
+/* Correspondence between physical drive number and physical drive.      */
+/* Note that Tiny-FatFs supports only single drive and always            */
+/* accesses drive number 0.                                              */
+
+/*-----------------------------------------------------------------------*/
+/* Inidialize a Drive                                                    */
+DSTATUS disk_initialize (
+	BYTE drv				/* Physical drive nmuber (0..) */
+)
+{
+	DSTATUS stat;
+	int result;
+
+	switch (drv) {
+	/*case ATA :
+		result = ATA_disk_initialize();
+		// translate the reslut code here
+
+		return stat;*/
+
+	case SDMMC :
+		result = MMC_disk_initialize();
+		// translate the reslut code here
+		if(result < 0)
+			stat = STA_NOINIT;
+		else
+			stat = 0;
+		return stat;
+#if 0
+	case USB :
+		result = USB_disk_initialize();
+		// translate the reslut code here
+		if(result < 0)
+			stat = STA_NOINIT;
+		else
+			stat = 0;
+		
+		return stat;
+#endif
+	}
+	return STA_NOINIT;
+
+}
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Return Disk Status                                                    */
+
+DSTATUS disk_status (
+	BYTE drv		/* Physical drive nmuber (0..) */
+)
+{
+	//drv = drv;
+	return 0;
+#if 0
+
+	DSTATUS stat;
+	int result;
+
+
+	switch (drv) {
+	case ATA :
+		result = ATA_disk_status();
+		// translate the reslut code here
+
+		return stat;
+
+	case SDMMC :
+		result = MMC_disk_status();
+		// translate the reslut code here
+
+		return stat;
+#if 0
+	case USB :
+		result = USB_disk_status();
+		// translate the reslut code here
+
+		return stat;
+#endif
+	}
+	return STA_NOINIT;
+#endif	
+}
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Read Sector(s)                                                        */
+
+DRESULT disk_read (
+	BYTE drv,		/* Physical drive nmuber (0..) */
+	BYTE *buff,		/* Data buffer to store read data */
+	DWORD sector,	/* Sector address (LBA) */
+	BYTE count		/* Number of sectors to read (1..255) */
+)
+{
+	DRESULT res;
+	int result;
+
+	switch (drv) {
+	/*case ATA :
+		result = ATA_disk_read(buff, sector, count);
+		// translate the reslut code here
+
+		return res;*/
+
+	case SDMMC :
+		result = MMC_disk_read(buff, sector, count);
+		// translate the reslut code here
+		if(result < 0)
+			res = RES_ERROR;
+		else
+			res = RES_OK;
+		return res;
+#if 0
+	case USB :
+		result = USB_disk_read(buff, sector, count);
+		// translate the reslut code here
+		if(result < 0)
+			res = RES_ERROR;
+		else
+			res = RES_OK;
+		return res;
+#endif
+	}
+	
+	return RES_PARERR;
+}
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Write Sector(s)                                                       */
+
+#if _READONLY == 0
+DRESULT disk_write (
+	BYTE drv,			/* Physical drive nmuber (0..) */
+	const BYTE *buff,	/* Data to be written */
+	DWORD sector,		/* Sector address (LBA) */
+	BYTE count			/* Number of sectors to write (1..255) */
+)
+{
+	DRESULT res;
+	int result;
+
+	switch (drv) {
+	case ATA :
+		result = ATA_disk_write(buff, sector, count);
+		// translate the reslut code here
+
+		return res;
+
+	case SDMMC :
+		result = MMC_disk_write(buff, sector, count);
+		// translate the reslut code here
+
+		return res;
+#if 0
+	case USB :
+		result = USB_disk_write(buff, sector, count);
+		// translate the reslut code here
+
+		return res;
+#endif
+	}
+	return RES_PARERR;
+}
+#endif /* _READONLY */
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Miscellaneous Functions                                               */
+
+DRESULT disk_ioctl (
+	BYTE drv,		/* Physical drive nmuber (0..) */
+	BYTE ctrl,		/* Control code */
+	void *buff		/* Buffer to send/receive control data */
+)
+{
+	DRESULT res;
+	int result;
+
+	switch (drv) {
+	/*case ATA :
+		// pre-process here
+
+		result = ATA_disk_ioctl(ctrl, buff);
+		// post-process here
+
+		return res;*/
+
+	case SDMMC :
+		// pre-process here
+
+		result = MMC_disk_ioctl(ctrl, buff);
+		// post-process here
+		if(result < 0)
+			res = RES_PARERR;
+		else
+			res = RES_OK;
+		return res;
+
+	/*case USB :
+		// pre-process here
+
+		result = USB_disk_ioctl(ctrl, buff);
+		if(result < 0)
+			res = RES_PARERR;
+		else
+			res = RES_OK;
+
+		return res;*/
+	}
+	return RES_PARERR;
+}
+