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MXC-A36-Demo/MCU/components/modules/fatfs/source/diskio.c

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demo工程暂存 优化菜单界面UI和功能
2024-04-29 16:32:24 +08:00
/*-----------------------------------------------------------------------*/
/* Low level disk I/O module SKELETON for FatFs (C)ChaN, 2019 */
/*-----------------------------------------------------------------------*/
/* If a working storage control module is available, it should be */
/* attached to the FatFs via a glue function rather than modifying it. */
/* This is an example of glue functions to attach various exsisting */
/* storage control modules to the FatFs module with a defined API. */
/*-----------------------------------------------------------------------*/
#include <string.h>
#include "fr30xx.h"
#include "ff.h" /* Obtains integer types */
#include "diskio.h" /* Declarations of disk functions */
#include "IC_W25Qxx.h"
/* Definitions of physical drive number for each drive */
#define DEV_RAM 0 /* Example: Map Ramdisk to physical drive 0 */
#define DEV_MMC 1 /* Example: Map MMC to physical drive 1 */
#define DEV_SPI_FLASH 2 /* Example: Map SPI Flash to physical drive 2 */
#define DEV_NAND_FLASH 3 /* Example: Map Nand Flash to physical drive 3 */
#define DEV_SD_CARD 4 /* Example: Map SD Card to physical drive 4 */
#define RAM_SECTOR_SIZE 512
#define RAM_SECTOR_COUNT (16*48)
#define RAM_BLOCK_SIZE 4096
#define RAM_DISK_SIZE (RAM_SECTOR_SIZE * RAM_SECTOR_COUNT)
#define SD_CARD_SECTOR_SIZE 512
#define SD_CARD_BLOCK_SIZE 4096
#define SPI_FLASH_SECTOR_SIZE 512
#define SPI_FLASH_BLOCK_SIZE 4096
#define SPI_FLASH_SECTOR_COUNT (2*1024*4)
__ALIGNED(4) static uint8_t ram_disk_space[RAM_DISK_SIZE];
static uint8_t spi_flash_poll[4096];
extern SD_HandleTypeDef sdio_handle;
static void _SPI_Flash_Write(uint8_t* pBuffer,uint32_t WriteAddr,uint16_t NumByteToWrite)
{
uint32_t secpos;
uint16_t secoff;
uint16_t secremain;
uint16_t i;
secpos = WriteAddr/4096; // 扇区地址 0~511 for w25x16
secoff = WriteAddr%4096; // 在扇区内的偏<E79A84><E5818F>?
secremain = 4096 - secoff; // 扇区剩余空间大小
if (NumByteToWrite <= secremain) {
secremain=NumByteToWrite;//不大<E4B88D><E5A4A7>?4096个字<E4B8AA><E5AD97>?
}
while(1)
{
IC_W25Qxx_Read_Data(spi_flash_poll, secpos*4096, 4096); // 读出整个扇区的内<E79A84><E58685>?
for(i=0; i<secremain; i++) // 校验数据
{
if(spi_flash_poll[secoff+i] != 0xFF)
break; // 需要擦<E8A681><E693A6>?
}
if(i < secremain) // 需要擦<E8A681><E693A6>?
{
IC_W25Qxx_EraseSector(secpos * 4096);
for(i=0; i<secremain; i++) // 复制
{
spi_flash_poll[i+secoff] = pBuffer[i];
}
for (uint8_t j=0; j<16; j++) {
IC_W25Qxx_PageProgram(&spi_flash_poll[j * 256], secpos*4096 + j * 256, 256); // 写入整个扇区
}
}
else
{
IC_W25Qxx_PageProgram(pBuffer, WriteAddr, secremain); // 写已经擦除了<E999A4><E4BA86>?,直接写入扇区剩余区间.
}
if(NumByteToWrite==secremain)
{
break; // 写入结束<E7BB93><E69D9F>?
}
else // 写入未结<E69CAA><E7BB93>?
{
secpos++; // 扇区地址<E59CB0><E59D80>?1
secoff=0; // 偏移位置<E4BD8D><E7BDAE>?0
pBuffer += secremain; // 指针偏移
WriteAddr += secremain; // 写地址偏移
NumByteToWrite -= secremain; // 字节数递减
if(NumByteToWrite > 4096)
{
secremain=4096; // 下一个扇区还是写不完
}
else
{
secremain=NumByteToWrite; // 下一个扇区可以写完了
}
}
}
}
static DSTATUS RAM_disk_status(void)
{
return RES_OK;
}
static DSTATUS MMC_disk_status(void)
{
return RES_OK;
}
static DSTATUS SPI_flash_status(void)
{
return RES_OK;
}
static DSTATUS SD_Card_status(void)
{
return RES_OK;
}
static DSTATUS RAM_disk_initialize(void)
{
// memset(ram_disk_space, 0, RAM_DISK_SIZE);
return RES_OK;
}
static DSTATUS MMC_disk_initialize(void)
{
return RES_ERROR;
}
static DSTATUS SPI_flash_initialize(void)
{
return RES_OK;
}
static DSTATUS SD_Card_initialize(void)
{
// uint32_t EER;
//
// EER = SDCard_Init(&SDIO);
// if (EER != INT_NO_ERR) {
// return RES_ERROR;
// }
// EER = SDCard_BusWidth_Select(&SDIO, SDIO_BUS_WIDTH_4BIT);
// if (EER != INT_NO_ERR) {
// return RES_ERROR;
// }
return RES_OK;
}
static DSTATUS RAM_disk_read(BYTE *buff, LBA_t sector, UINT count)
{
printf("RAM_disk_read: sector = %d, count = %d\r\n", sector, count);
memcpy(buff, &ram_disk_space[sector*RAM_SECTOR_SIZE], count * RAM_SECTOR_SIZE);
return RES_OK;
}
static DSTATUS SPI_flash_read(BYTE *buff, LBA_t sector, UINT count)
{
printf("SPI_flash_read: sector = %d, count = %d\r\n", sector, count);
IC_W25Qxx_Read_Data(buff, sector * SPI_FLASH_SECTOR_SIZE, count * SPI_FLASH_SECTOR_SIZE);
return RES_OK;
}
static DSTATUS MMC_disk_read(BYTE *buff, LBA_t sector, UINT count)
{
return RES_ERROR;
}
static DSTATUS SD_Card_read(BYTE *buff, LBA_t sector, UINT count)
{
SDCard_ReadBolcks(&sdio_handle, (uint32_t *)buff, sector, count);
return RES_OK;
}
static DSTATUS RAM_disk_write(const BYTE *buff, LBA_t sector, UINT count)
{
printf("RAM_disk_write: sector = %d, count = %d\r\n", sector, count);
memcpy(&ram_disk_space[sector*RAM_SECTOR_SIZE], buff, count * RAM_SECTOR_SIZE);
return RES_OK;
}
static DSTATUS MMC_disk_write(const BYTE *buff, LBA_t sector, UINT count)
{
return RES_ERROR;
}
static DSTATUS SPI_flash_write(const BYTE *buff, LBA_t sector, UINT count)
{
printf("SPI_flash_write: sector = %d, count = %d\r\n", sector, count);
_SPI_Flash_Write((uint8_t *)buff, sector * SPI_FLASH_SECTOR_SIZE, count * SPI_FLASH_SECTOR_SIZE);
return RES_OK;
}
static DSTATUS SD_Card_write(const BYTE *buff, LBA_t sector, UINT count)
{
SDCard_WriteBolcks(&sdio_handle, (uint32_t *)buff, sector, count);
return RES_OK;
}
/*-----------------------------------------------------------------------*/
/* Get Drive Status */
/*-----------------------------------------------------------------------*/
DSTATUS disk_status (
BYTE pdrv /* Physical drive nmuber to identify the drive */
)
{
DSTATUS stat;
switch (pdrv) {
case DEV_RAM :
stat = RAM_disk_status();
// translate the reslut code here
return stat;
case DEV_MMC :
stat = MMC_disk_status();
// translate the reslut code here
return stat;
case DEV_SPI_FLASH :
stat = SPI_flash_status();
// translate the reslut code here
return stat;
case DEV_SD_CARD :
stat = SD_Card_status();
// translate the reslut code here
return stat;
}
return STA_NOINIT;
}
/*-----------------------------------------------------------------------*/
/* Inidialize a Drive */
/*-----------------------------------------------------------------------*/
DSTATUS disk_initialize (
BYTE pdrv /* Physical drive nmuber to identify the drive */
)
{
DSTATUS stat;
switch (pdrv) {
case DEV_RAM :
stat = RAM_disk_initialize();
// translate the reslut code here
return stat;
case DEV_MMC :
stat = MMC_disk_initialize();
// translate the reslut code here
return stat;
case DEV_SPI_FLASH :
stat = SPI_flash_initialize();
// translate the reslut code here
return stat;
case DEV_SD_CARD :
stat = SD_Card_initialize();
// translate the reslut code here
return stat;
}
return STA_NOINIT;
}
/*-----------------------------------------------------------------------*/
/* Read Sector(s) */
/*-----------------------------------------------------------------------*/
DRESULT disk_read (
BYTE pdrv, /* Physical drive nmuber to identify the drive */
BYTE *buff, /* Data buffer to store read data */
LBA_t sector, /* Start sector in LBA */
UINT count /* Number of sectors to read */
)
{
DRESULT res;
switch (pdrv) {
case DEV_RAM :
// translate the arguments here
res = RAM_disk_read(buff, sector, count);
// translate the reslut code here
return res;
case DEV_MMC :
// translate the arguments here
res = MMC_disk_read(buff, sector, count);
// translate the reslut code here
return res;
case DEV_SPI_FLASH :
// translate the arguments here
res = SPI_flash_read(buff, sector, count);
// translate the reslut code here
return res;
case DEV_SD_CARD :
// translate the arguments here
res = SD_Card_read(buff, sector, count);
// translate the reslut code here
return res;
}
return RES_PARERR;
}
/*-----------------------------------------------------------------------*/
/* Write Sector(s) */
/*-----------------------------------------------------------------------*/
#if FF_FS_READONLY == 0
DRESULT disk_write (
BYTE pdrv, /* Physical drive nmuber to identify the drive */
const BYTE *buff, /* Data to be written */
LBA_t sector, /* Start sector in LBA */
UINT count /* Number of sectors to write */
)
{
DRESULT res;
switch (pdrv) {
case DEV_RAM :
// translate the arguments here
res = RAM_disk_write(buff, sector, count);
// translate the reslut code here
return res;
case DEV_MMC :
// translate the arguments here
res = MMC_disk_write(buff, sector, count);
// translate the reslut code here
return res;
case DEV_SPI_FLASH :
// translate the arguments here
res = SPI_flash_write(buff, sector, count);
// translate the reslut code here
return res;
case DEV_SD_CARD :
// translate the arguments here
res = SD_Card_write(buff, sector, count);
// translate the reslut code here
return res;
}
return RES_PARERR;
}
#endif
/*-----------------------------------------------------------------------*/
/* Miscellaneous Functions */
/*-----------------------------------------------------------------------*/
DRESULT disk_ioctl (
BYTE pdrv, /* Physical drive nmuber (0..) */
BYTE cmd, /* Control code */
void *buff /* Buffer to send/receive control data */
)
{
DRESULT res = RES_PARERR;
switch (pdrv) {
case DEV_RAM :
// Process of the command for the RAM drive
switch(cmd)
{
case CTRL_SYNC:
res = RES_OK;
break;
case GET_SECTOR_SIZE:
*(WORD*)buff = RAM_SECTOR_SIZE;
res = RES_OK;
break;
case GET_BLOCK_SIZE:
*(WORD*)buff = RAM_BLOCK_SIZE;
res = RES_OK;
break;
case GET_SECTOR_COUNT:
*(DWORD*)buff = RAM_SECTOR_COUNT;
res = RES_OK;
break;
case CTRL_TRIM:
res = RES_OK;
break;
default:
res = RES_PARERR;
break;
}
return res;
case DEV_MMC :
// Process of the command for the MMC/SD card
return res;
case DEV_SPI_FLASH :
// Process of the command for the MMC/SD card
switch(cmd)
{
case CTRL_SYNC:
res = RES_OK;
break;
case GET_SECTOR_SIZE:
*(WORD*)buff = SPI_FLASH_SECTOR_SIZE;
res = RES_OK;
break;
case GET_BLOCK_SIZE:
*(WORD*)buff = SPI_FLASH_BLOCK_SIZE;
res = RES_OK;
break;
case GET_SECTOR_COUNT:
*(DWORD*)buff = SPI_FLASH_SECTOR_COUNT;
res = RES_OK;
break;
case CTRL_TRIM:
res = RES_OK;
break;
default:
res = RES_PARERR;
break;
}
return res;
case DEV_SD_CARD :
// Process of the command for the RAM drive
switch(cmd)
{
case CTRL_SYNC:
res = RES_OK;
break;
case GET_SECTOR_SIZE:
*(WORD*)buff = SD_CARD_SECTOR_SIZE;
res = RES_OK;
break;
case GET_BLOCK_SIZE:
*(WORD*)buff = SD_CARD_BLOCK_SIZE;
res = RES_OK;
break;
case GET_SECTOR_COUNT:
*(DWORD*)buff = SDCard_Get_Block_count(&sdio_handle);
res = RES_OK;
break;
case CTRL_TRIM:
res = RES_OK;
break;
default:
res = RES_PARERR;
break;
}
return res;
}
return RES_PARERR;
}