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#include "diskio.h"
#include "string.h"
#include "hal_flash.h"
#define FLASH_START_ADDR 0x00040000 /*addr start from 256k */
#define FLASH_BLOCK_SIZE 4096
#define FLASH_BLOCK_COUNT 64
extern const char *FR_Table[];
int USB_disk_status(void)
{
return 0;
}
int USB_disk_initialize(void)
{
return RES_OK;
}
int USB_disk_read(BYTE *buff, LBA_t sector, UINT count)
{
flash_read(FLASH_START_ADDR + sector * FLASH_BLOCK_SIZE, (uint8_t *)buff, count * FLASH_BLOCK_SIZE);
return 0;
}
int USB_disk_write(const BYTE *buff, LBA_t sector, UINT count)
{
flash_erase(FLASH_START_ADDR + sector * FLASH_BLOCK_SIZE, 4096);
flash_write(FLASH_START_ADDR + sector * FLASH_BLOCK_SIZE, (uint8_t *)buff, count * FLASH_BLOCK_SIZE);
return 0;
}
int USB_disk_ioctl(BYTE cmd, void *buff)
{
int result = 0;
switch (cmd) {
case CTRL_SYNC:
result = RES_OK;
break;
case GET_SECTOR_SIZE:
*(WORD *)buff = FLASH_BLOCK_SIZE;
result = RES_OK;
break;
case GET_BLOCK_SIZE:
*(DWORD *)buff = 1;
result = RES_OK;
break;
case GET_SECTOR_COUNT:
*(DWORD *)buff = FLASH_BLOCK_COUNT;
result = RES_OK;
break;
default:
result = RES_PARERR;
break;
}
return result;
}
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