spi flash驱动

移植需要更改sendrcv函数里面内容，宏定义内容

#define     DRV_SPI_FLASH_WRITE_ENABLE              (0x06)    //Write Enable
#define     DRV_SPI_FLASH_WRITE_DISABLE             (0x04)    //Write Disable
#define     DRV_SPI_FLASH_READ_STATUS_REG           (0x05)    //Read Status Register
#define     DRV_SPI_FLASH_WRITE_STATUS_REG          (0x01)    //Write Status Register
#define     DRV_SPI_FLASH_READ_DATA                 (0x03)    //Read Data
#define     DRV_SPI_FLASH_FAST_READ                 (0x0B)    //Fast Read
#define     DRV_SPI_FLASH_FAST_READ_DUAL_OUTPUT     (0x3B)    //Fast Read Dual Output
#define     DRV_SPI_FLASH_PAGEPROGRAM               (0x02)    //Page Program
#define     DRV_SPI_FLASH_BLOCK_ERASE               (0xD8)    //Block Erase(64KB)
#define     DRV_SPI_FLASH_HALF_BLOCK_ERASE          (0x52)    //Half Block Erase(32KB)
#define     DRV_SPI_FLASH_SECTOR_ERASE              (0x20)    //Sector Erase(4KB)
#define     DRV_SPI_FLASH_CHIP_ERASE                (0xC7)    //Chip Erase
#define     DRV_SPI_FLASH_JEDEC_ID                  (0x9F)    //JEDEC ID#define APP_SPI3_CS_LOW                SCU_SetSpiCsn(SPI3_CSN,LOW)
#define APP_SPI3_CS_HIGH               SCU_SetSpiCsn(SPI3_CSN,HIGH)uint8_t DrvFlashSendRcvByte(uint8_t ucData)
{uint8_t ucTemp;while(SPI_GetFlagStatus(SGCC_SPI3_P,SPI_FLAG_RFNE))ucTemp = SPI_ReceiveData(SGCC_SPI3_P);SPI_SendData(SGCC_SPI3_P, ucData);while(0 == SPI_GetFlagStatus(SGCC_SPI3_P,SPI_FLAG_RFNE));ucTemp = SPI_ReceiveData(SGCC_SPI3_P);return ucTemp;
}uint32_t DrvFlashReadID(void)
{uint32_t ulDevID = 0;APP_SPI3_CS_LOW;DrvFlashSendRcvByte(DRV_SPI_FLASH_JEDEC_ID);ulDevID |= DrvFlashSendRcvByte(0xFF) << 16;ulDevID |= DrvFlashSendRcvByte(0xFF) << 8;ulDevID |= DrvFlashSendRcvByte(0xFF);APP_SPI3_CS_HIGH;return ulDevID;
}
uint8_t DrvFlashReadStausReg(void)
{uint8_t ucReg;APP_SPI3_CS_LOW;DrvFlashSendRcvByte(DRV_SPI_FLASH_READ_STATUS_REG);ucReg = DrvFlashSendRcvByte(0xFF);APP_SPI3_CS_HIGH;return ucReg;
}
void DrvFlashWaitBusy(void)
{while((DrvFlashReadStausReg() & 0x01) == 0x01);
}void DrvFlashWriteEnable(void)
{APP_SPI3_CS_LOW;DrvFlashSendRcvByte(DRV_SPI_FLASH_WRITE_ENABLE);APP_SPI3_CS_HIGH;
}void DrvFlashWriteDisable(void)
{APP_SPI3_CS_LOW;DrvFlashSendRcvByte(DRV_SPI_FLASH_WRITE_DISABLE);APP_SPI3_CS_HIGH;
}void DrvFlashReadData(uint8_t* pRcvBuf, uint32_t ulReAddr, uint16_t usReNum)
{uint16_t i;APP_SPI3_CS_LOW;DrvFlashSendRcvByte(DRV_SPI_FLASH_READ_DATA);DrvFlashSendRcvByte((uint8_t)((ulReAddr)>>16));DrvFlashSendRcvByte((uint8_t)((ulReAddr)>>8));DrvFlashSendRcvByte((uint8_t)ulReAddr);for(i=0; i < usReNum; i++){pRcvBuf[i] = DrvFlashSendRcvByte(0XFF);}APP_SPI3_CS_HIGH;}void DrvFlashPageWrite(uint8_t* pWrBuf, uint32_t ulWrAddr, uint16_t usWrNum)
{uint16_t i;DrvFlashWriteEnable();APP_SPI3_CS_LOW;DrvFlashSendRcvByte(DRV_SPI_FLASH_PAGEPROGRAM);DrvFlashSendRcvByte((uint8_t)((ulWrAddr)>>16));DrvFlashSendRcvByte((uint8_t)((ulWrAddr)>>8));DrvFlashSendRcvByte((uint8_t)ulWrAddr);for(i = 0; i < usWrNum; i++)DrvFlashSendRcvByte(pWrBuf[i]);APP_SPI3_CS_HIGH;DrvFlashWaitBusy();
}void DrvFlashWriteNoCheck(uint8_t* pBuffer, uint32_t addr, uint16_t num)
{uint16_t pageremain;pageremain = 256 - addr % 256;//鍗曢〉鍓╀綑瀛楄妭鏁�if(num <= pageremain)//涓嶅ぇ浜�256pageremain = num;while(1){DrvFlashPageWrite(pBuffer, addr, pageremain);if(num == pageremain)break;//鍐欑粨鏉熶簡else{pBuffer += pageremain;addr += pageremain;num -= pageremain;//鍑忓幓宸茬粡鍐欏叆鐨勫瓧鑺傛暟if(num  > 256)pageremain = 256;//鏈鍙互鍐欏叆涓�椤垫暟鎹�elsepageremain = num;//鏈�鍚庝竴娆″啓}};
}void DrvFlashWriteData(uint8_t* pBuffer,uint32_t addr,uint16_t num)
{uint32_t secpos;uint16_t secoff;uint16_t secremain;uint16_t i;uint8_t * W25QXX_BUF;uint8_t W25QXX_BUFFER[4096];W25QXX_BUF = W25QXX_BUFFER;secpos = addr / 4096;//鎵囧尯鍦板潃secoff = addr % 4096;//鍦ㄦ墖鍖哄唴鐨勫亸绉�secremain = 4096 - secoff;//鎵囧尯鍓╀綑绌洪棿澶у皬
//    printfif(num <= secremain)//涓嶅ぇ浜庡綋鍓嶆墖鍖哄墿浣欏瓧鑺�{secremain = num;}while(1){DrvFlashReadData(W25QXX_BUF, secpos * 4096, 4096);//璇诲彇鏁翠釜鎵囧尯for(i = 0; i < secremain; i++)//鏍￠獙鏁版嵁{if(W25QXX_BUF[secoff + i] != 0XFF)//闇�瑕佹摝鍑�break;}if(i < secremain)//闇�瑕佹摝鍑�{DrvFlashSectorErase(secpos * 4096);//鎿﹂櫎鏁翠釜鎵囧尯for(i = 0; i < secremain; i++){W25QXX_BUF[i + secoff] = pBuffer[i];//澶嶅埗}DrvFlashWriteNoCheck(W25QXX_BUF, secpos * 4096, 4096);//鍐欏叆鏁翠釜鎵囧尯}elseDrvFlashWriteNoCheck(pBuffer, addr, secremain);//鍐欏凡缁忔摝闄や簡鐨勶紝鐩存帴鍐欏叆鎵囧尯鍓╀綑绌洪棿if(num == secremain)break;//鍐欑粨鏉熶簡else//{secpos++;//鎵囧尯鍦板潃澧炲姞1secoff = 0;//鍋忕Щ浣嶇疆涓�0pBuffer += secremain;//鎸囬拡鍋忕Щaddr += secremain;//鍐欏湴鍧�鍋忕Щnum -= secremain;//瀛楄妭鏁伴�掑噺if(num > 4096)secremain = 4096;//涓嬩竴涓墖鍖鸿繕鏄啓涓嶅畬elsesecremain = num;//涓嬩竴涓墖鍖哄彲浠ュ啓瀹屼簡}};
}void DrvFlashChipErase(void)
{DrvFlashWriteEnable();DrvFlashWaitBusy();APP_SPI3_CS_LOW;DrvFlashSendRcvByte(DRV_SPI_FLASH_CHIP_ERASE);APP_SPI3_CS_HIGH;DrvFlashWaitBusy();
}void DrvFlashSectorErase(uint32_t ulErAddr)
{DrvFlashWriteEnable();DrvFlashWaitBusy();APP_SPI3_CS_LOW;DrvFlashSendRcvByte(DRV_SPI_FLASH_SECTOR_ERASE);DrvFlashSendRcvByte((uint8_t)((ulErAddr)>>16));DrvFlashSendRcvByte((uint8_t)((ulErAddr)>>8));DrvFlashSendRcvByte((uint8_t)ulErAddr);APP_SPI3_CS_HIGH;DrvFlashWaitBusy();
}

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