📄 driver_wr.c
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#include "Driver_WR.h"
#include "sd_driver.h"
#include "sd_cmd.h"
#include "ch375_driver.h"
#include "ch375_cmd.h"
extern volatile DSTATUS Stat;
extern volatile unsigned char CardType;
UINT8 sd_u;
/********************************************************************************************************************
** 函数名称: UINT8 RBC_Read( UINT32 iLbaStart, UINT8 iSectorCount,UINT8 xdata *mBufferPoint )
** Name: UINT8 RBC_Read( UINT32 iLbaStart, UINT8 iSectorCount,UINT8 xdata *mBufferPoint )
** 功能描述: 读取物理扇区
** Function: Read physic sector in the disk
** 输 入: UINT32 iLbaStart : 扇区开始地址
UINT8 iSectorCount ：扇区数目
UINT8 xdata *mBufferPoint ：数据缓存
** Input: UINT32 iLbaStart : start address of reading
UINT8 iSectorCount ：reading sector number
UINT8 xdata *mBufferPoint ：the reading buffer
** 输 出: 0: 正确 >0: 错误码
** Output: 0: right >0: error code
*********************************************************************************************************************/
UINT8 RBC_Read( UINT32 iLbaStart, UINT8 iSectorCount,UINT8 xdata *mBufferPoint )
{
if(!sd_u) ////sd card
{
if(!iSectorCount)
{
printf("Error: RBC_Read() Parameter error \n");
return CH_ERROR;
}
if(Stat == STA_NOINIT)
{
printf("Error: RBC_Read() Chip is not inited \n");
return CH_ERROR;
}
if(!(CardType==8)) iLbaStart = iLbaStart*512;
SPI_TransferByte(0xff);
if(iSectorCount ==1)
{
if((Write_Command_MMC(CMD17,iLbaStart)<=1)&&rcvr_datablock(mBufferPoint,512))
iSectorCount = 0;
}
else
{
if(Write_Command_MMC(CMD18,iLbaStart)==0)
{
do{
if(!rcvr_datablock(mBufferPoint, 512))
break;
mBufferPoint =mBufferPoint + 512;
}while(--iSectorCount);
Write_Command_MMC(CMD12,0);
}
}
SPI_TransferByte(0xff);
if(iSectorCount)
{
printf("Error: RBC_Read() quit, write is not finished \n");
return CH_ERROR;
}
else
{
// printf("Success: RBC_Read() success \n");
return CH_OK;
}
}
else
{
UINT8 mIntStatus;
UINT16 mBlockCount;
UINT8 mLength;
UINT8 i;
for( i=0; i!=3; i++ )
{
CH375_CMD_PORT_d_out(CMD_DISK_READ); /* 从USB存储器读数据块 */
CH375_DAT_PORT_d_out((UINT8)iLbaStart); /* LBA的最低8位 */
CH375_DAT_PORT_d_out((UINT8)(iLbaStart >> 8 ));
CH375_DAT_PORT_d_out((UINT8)(iLbaStart >> 16 ));
CH375_DAT_PORT_d_out((UINT8)( iLbaStart >> 24 )); /* LBA的最高8位 */
CH375_DAT_PORT_d_out( iSectorCount); /* 扇区数 */
for ( mBlockCount = iSectorCount * CH375_BLK_PER_SEC; mBlockCount != 0; mBlockCount -- ) { /* 数据块计数 */
mIntStatus = mWaitInterrupt( ); /* 等待中断并获取状态 */
if ( mIntStatus == USB_INT_DISK_READ ) { /* USB存储器读数据块,请求数据读出 */
CH375_CMD_PORT_d_out(CMD_RD_USB_DATA); /* 从CH375缓冲区读取数据块 */
mLength = CH375_DAT_PORT_d_in(); /* 后续数据的长度 */
/* 通常数据长度是64,有些U盘要求单片机必须在2mS之内取走64字节数据,否则U盘可能数据丢失 */
/* 建议优化下面的循环程序,确保单片机在1mS之内完成64字节的数据传输 */
if ( mLength ) { /* 根据长度读取数据 */
do { // 对于C51,这个DO+WHILE结构效率高,速度快
*mBufferPoint = CH375_DAT_PORT_d_in(); /* 读出数据并保存 */
mBufferPoint ++;
} while ( -- mLength );
}
CH375_CMD_PORT_d_out( CMD_DISK_RD_GO); /* 继续执行USB存储器的读操作 */
}
else
{
printf("mIntStatus is not USB_INT_DISK_READ \n"); //0x1F 错误
break;
}
}
if ( mBlockCount == 0 )
{
mIntStatus = mWaitInterrupt( ); /* 等待中断并获取状态 */
if ( mIntStatus == USB_INT_SUCCESS )
return CH_OK; /* 操作成功 */
else if( mIntStatus == USB_INT_DISK_ERR )
{
DelayMs( 50 );
CH375_CMD_PORT_d_out( CMD_DISK_R_SENSE ); /* 获取USB存储器的容量 */
mIntStatus = mWaitInterrupt( ); /* 等待中断并获取状态 */
if ( mIntStatus != USB_INT_SUCCESS ) /* 出现错误 */
{
printf("Error: read sector Error! position 1 \n");
return CH_ERROR;
}
}
}
}
//CSTR( "mIntStatus: ", 0 );
//CHEX( &mIntStatus, 1, 1 );
printf("Error: read sector Error! position 2 \n");
return CH_ERROR; /* 操作失败 */
}
}
/********************************************************************************************************************
** 函数名称: UINT8 RBC_Write( UINT32 iLbaStart, UINT8 iSectorCount,UINT8 xdata *mBufferPoint )
** Name: UINT8 RBC_Write( UINT32 iLbaStart, UINT8 iSectorCount,UINT8 xdata *mBufferPoint )
** 功能描述: 写物理扇区
** Function: Write physic sector in the disk
** 输 入: UINT32 iLbaStart : 扇区开始地址
UINT8 iSectorCount ：扇区数目
UINT8 xdata *mBufferPoint ：数据缓存
** Input: UINT32 iLbaStart : start address of reading
UINT8 iSectorCount ：sector number
UINT8 xdata *mBufferPoint ：the Writting buffer
** 输 出: 0: 正确 >0: 错误码
** Output: 0: right >0: error code
*********************************************************************************************************************/
UINT8 RBC_Write(UINT32 iLbaStart, UINT8 iSectorCount,UINT8 xdata *mBufferPoint)
{
if(!sd_u)
{
UINT8 temp;
UINT16 write_wait = 65535;
if(!iSectorCount)
{
printf("Error: RBC_Write() Parameter error \n");
return CH_ERROR;
}
if(Stat == STA_NOINIT)
{
printf("Error: RBC_Write() Chip is not inited \n");
return CH_ERROR;
}
if(Stat == STA_PROTECT)
{
printf("Error: RBC_Write() Chip is protected \n");
return CH_ERROR;
}
if(!(CardType & 8)) iLbaStart = iLbaStart * 512;
SPI_TransferByte(0xff);
SPI_TransferByte(0xff); //wait at least 8 clock
if(iSectorCount == 1)
{
if(Write_Command_MMC(CMD24, iLbaStart)==0x00)
{
if(xmit_datablock(mBufferPoint,0xFE))
iSectorCount = 0;
write_wait = 65535;
do{
temp = SPI_TransferByte(0xff);
write_wait--;
}while((temp!=0xff)&&write_wait); //wait for write complete
if(!write_wait)
{
printf("Error: RBC_Write(), single sector write time out \n");
return CH_ERROR;
}
}
}
else
{
if(CardType == 6)
Write_Command_MMC(ACMD23, iSectorCount);
if(Write_Command_MMC(CMD25,iLbaStart)==0x00)
{
do{
if(!xmit_datablock(mBufferPoint,0xFC)) break;
mBufferPoint = mBufferPoint +512;
write_wait = 65535;
do{
temp = SPI_TransferByte(0xff);
write_wait--;
}while((temp!=0xff)&&write_wait);
if(!write_wait)
{
printf("Error: RBC_Write(), multi sectors write time out \n");
return CH_ERROR;
}
}while(--iSectorCount);
xmit_datablock(0,0xFD);
write_wait = 65535;
do{
temp = SPI_TransferByte(0xff);
write_wait--;
}while((temp!=0xff)&&write_wait);
if(!write_wait)
{
printf("Error: RBC_Write(), write return to ilde time out \n");
return CH_ERROR;
}
}
}
if(iSectorCount)
{
printf("Error: RBC_Write() quit, write is not finished \n");
return CH_ERROR;
}
else
{
// printf("Success: RBC_Write() success \n");
return CH_OK;
}
}
else
{
UINT8 mIntStatus;
UINT16 mBlockCount;
UINT8 mLength;
CH375_CMD_PORT_d_out( CMD_DISK_WRITE); /* 向USB存储器写数据块 */
CH375_DAT_PORT_d_out((UINT8)iLbaStart); /* LBA的最低8位 */
CH375_DAT_PORT_d_out((UINT8)( iLbaStart >> 8 ));
CH375_DAT_PORT_d_out((UINT8)( iLbaStart >> 16 ));
CH375_DAT_PORT_d_out((UINT8)( iLbaStart >> 24 )); /* LBA的最高8位 */
CH375_DAT_PORT_d_out(iSectorCount); /* 扇区数 */
//mBufferPoint = &DATA_BUFFER; /* 指向缓冲区起始地址 */
for ( mBlockCount = iSectorCount * CH375_BLK_PER_SEC; mBlockCount != 0; mBlockCount -- ) { /* 数据块计数 */
mIntStatus = mWaitInterrupt( ); /* 等待中断并获取状态 */
if ( mIntStatus == USB_INT_DISK_WRITE ) { /* USB存储器写数据块,请求数据写入 */
CH375_CMD_PORT_d_out( CMD_WR_USB_DATA7); /* 向CH375缓冲区写入数据块 */
mLength = CH375_BLOCK_SIZE;
CH375_DAT_PORT_d_out(mLength); /* 后续数据的长度 */
/* 通常数据长度是64,有些U盘要求单片机必须在2mS之内写入64字节数据,否则U盘可能数据丢失 */
/* 建议优化下面的循环程序,确保单片机在1mS之内完成64字节的数据传输 */
do { // 对于C51,这个DO+WHILE结构效率高,速度快
CH375_DAT_PORT_d_out(*mBufferPoint); /* 将数据写入 */
mBufferPoint ++;
} while ( -- mLength );
CH375_CMD_PORT_d_out( CMD_DISK_WR_GO); /* 继续执行USB存储器的写操作 */
}
else break; /* 返回错误状态 */
}
if ( mBlockCount == 0 ) {
mIntStatus = mWaitInterrupt( ); /* 等待中断并获取状态 */
if ( mIntStatus == USB_INT_SUCCESS ) return CH_OK; /* 操作成功 */
}
printf("Error: Write sector Error!\n");
return CH_ERROR; /* 操作失败 */
}
}
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