/**
* @brief 片选中SD卡，使其工作
* @param
* @retval 1 选中成功
0 选中失败
*/
u8 SD_Select(void)
{
/* 片选设备 */
SPI_SoftwareSELCmd(HT_SPI0, SPI_SEL_ACTIVE);
if(SD_WaitReady()) //等待成功
return 1;
else //等待失败
{
SD_DisSelect();
return 0;
}
}
DRESULT disk_ioctl (
BYTE drv, /* Physical drive nmuber (0..) */
BYTE ctrl, /* Control code */
void *buff /* Buffer to send/receive control data */
)
{
DRESULT res;
if (drv)
{
return RES_PARERR; // only supports single disk operation, or return parameter error
}
// FATFS only deal with the current version of CTRL_SYNC, GET_SECTOR_COUNT, GET_BLOCK_SIZ three commands
switch(ctrl)
{
case CTRL_SYNC:
MSD_CS_ENABLE();
if(SD_WaitReady()==0)
{
res = RES_OK;
}
else
{
res = RES_ERROR;
}
MSD_CS_DISABLE();
break;
case GET_BLOCK_SIZE:
*(WORD*)buff = 512;
res = RES_OK;
break;
case GET_SECTOR_COUNT:
*(DWORD*)buff = SD_GetCapacity();
res = RES_OK;
break;
default:
res = RES_PARERR;
break;
}
return res;
}
DRESULT disk_ioctl (
BYTE drv, /* Physical drive nmuber (0..) */
BYTE ctrl, /* Control code */
void *buff /* Buffer to send/receive control data */
)
{
DRESULT res;
if (drv)
{
return RES_PARERR; //仅支持单磁盘操作，否则返回参数错误
}
//FATFS目前版本仅需处理CTRL_SYNC，GET_SECTOR_COUNT，GET_BLOCK_SIZ三个命令
switch(ctrl)
{
case CTRL_SYNC:
SD_CS_ENABLE();
if(SD_WaitReady()==0)
{
res = RES_OK;
}
else
{
res = RES_ERROR;
}
SD_CS_DISABLE();
break;
case GET_BLOCK_SIZE:
*(WORD*)buff = 512;
res = RES_OK;
break;
case GET_SECTOR_COUNT:
*(DWORD*)buff = SD_GetCapacity();
res = RES_OK;
break;
default:
res = RES_PARERR;
break;
}
return res;
}
DRESULT disk_ioctl (
BYTE pdrv, /* Physical drive nmuber (0..) */
BYTE cmd, /* Control code */
void *buff /* Buffer to send/receive control data */
)
{
DRESULT res;
int result;
switch (cmd) {
case CTRL_SYNC:
SD_CS = 0;
if(0 == SD_WaitReady())
{
res = RES_OK;
}
else
{
res = RES_ERROR;
}
SD_CS = 1;
break;
case GET_SECTOR_SIZE:
*(DWORD*)buff = SD_SECTOR_SIZE;
res = RES_OK;
break;
case GET_SECTOR_COUNT:
*(DWORD*)buff = SD_GetSectorCount();
res = RES_OK;
break;
case GET_BLOCK_SIZE:
*(DWORD*)buff = 8;
res = RES_OK;
break;
default:
res = RES_PARERR;
}
return (res);
}
DRESULT disk_ioctl (BYTE drv,BYTE ctrl,void* buff)//哪个盘，控制命令（0刷新缓存，3获取块大小，1获取磁盘容量），块大小和磁盘容量存放的指针
{
DRESULT res;
if (drv)
{
return RES_PARERR; //仅支持单磁盘操作，否则返回参数错误
}
//FATFS目前版本仅需处理CTRL_SYNC，GET_SECTOR_COUNT，GET_BLOCK_SIZ三个命令
switch(ctrl)
{
case CTRL_SYNC: //刷新磁盘缓存
SD_CS_ENABLE();
if(SD_WaitReady()==0)
{
res = RES_OK;
}
else
{
res = RES_ERROR;
}
SD_CS_DISABLE();
break;
case GET_BLOCK_SIZE://获取块的大小
*(WORD*)buff = 512;
res = RES_OK;
break;
case GET_SECTOR_COUNT: //获取磁盘的容量
*(DWORD*)buff = SD_GetCapacity();
res = RES_OK;
break;
default:
res = RES_PARERR;
break;
}
return res;
}
/**
* @name SD_SendBlock
* @description 向sd卡写入一个数据包的内容，共512字节
* @param buf 数据缓存区
cmd 指令
* @return 1 发送成功
0 发送失败
* @notice
*/
u8 SD_SendBlock(u8 *buf, u8 cmd)
{
u16 cnt;
u8 r1;
if(!SD_WaitReady())
return 0; //等待准备失效
SD_SPI_ReadWriteByte(cmd);
if(cmd != 0XFD)//不是结束指令
{
for(cnt = 0;cnt < 512;cnt++)
SD_SPI_ReadWriteByte(buf[cnt]);
SD_SPI_ReadWriteByte(0xFF);//忽略crc
SD_SPI_ReadWriteByte(0xFF);
r1 = SD_SPI_ReadWriteByte(0xFF);//接收响应
if((r1 & 0x1F) != 0x05)
return 0; //响应错误
}
return 1; //写入成功
}
DRESULT disk_ioctl (
BYTE pdrv, /* Physical drive nmuber (0..) */
BYTE cmd, /* Control code */
void *buff /* Buffer to send/receive control data */
)
{
DRESULT res;
if(pdrv==SD_CARD)//SD卡
{
switch(cmd)
{
case CTRL_SYNC:
SD_CS_Clr();
if(SD_WaitReady()==0)res = RES_OK;
else res = RES_ERROR;
SD_CS_Set();
break;
case GET_SECTOR_SIZE:
*(WORD*)buff = 512;
res = RES_OK;
break;
case GET_BLOCK_SIZE:
*(WORD*)buff = 8;
res = RES_OK;
break;
case GET_SECTOR_COUNT:
*(DWORD*)buff = SD_GetSectorCount();
res = RES_OK;
break;
default:
res = RES_PARERR;
break;
}
}else res=RES_ERROR;//其他的不支持
return res;
}
