[mw_shl_code=c,true]void WRITE_X25042(uint8_t* pBuffer, uint8_t WriteAddr, uint16_t NumByteToWrite)
{
//sFLASH_WaitForWriteEnd();
/*!< Enable the write access to the FLASH */
sFLASH_WriteEnable();
/*!< Select the FLASH: Chip Select low */
sFLASH_CS_LOW();
/*!< Send "Write to Memory " instruction */
sFLASH_SendByte(sFLASH_CMD_WRITE);
sFLASH_CS_HIGH();
for(Index=0;Index<10;Index++);
sFLASH_CS_LOW();
/*!< Send WriteAddr high nibble address byte to write to */
// sFLASH_SendByte((WriteAddr & 0xFF0000) >> 16);
/*!< Send WriteAddr medium nibble address byte to write to */
//sFLASH_SendByte((WriteAddr & 0x0100) >> 8);
/*!< Send WriteAddr low nibble address byte to write to */
sFLASH_SendByte(WriteAddr & 0xFF);
/*!< while there is data to be written on the FLASH */
while (NumByteToWrite--)
{
/*!< Send the current byte */
sFLASH_SendByte(*pBuffer);
/*!< Point on the next byte to be written */
printf("%c",*pBuffer);
pBuffer++;
}
/*!< Deselect the FLASH: Chip Select high */
sFLASH_CS_HIGH();
/*!< Wait the end of Flash writing */
sFLASH_WaitForWriteEnd();
}
void READ_X25042(uint8_t* pBuffer, uint8_t ReadAddr, uint16_t NumByteToRead)
{
/*!< Select the FLASH: Chip Select low */
sFLASH_CS_LOW();
/*!< Send "Read from Memory " instruction */
sFLASH_SendByte(sFLASH_CMD_READ);
/*!< Send ReadAddr high nibble address byte to read from */
//sFLASH_SendByte((ReadAddr & 0xFF0000) >> 16);
/*!< Send ReadAddr medium nibble address byte to read from */
// sFLASH_SendByte((ReadAddr& 0x0100) >> 8);
/*!< Send ReadAddr low nibble address byte to read from */
sFLASH_SendByte(ReadAddr & 0xFF);
while (NumByteToRead--) /*!< while there is data to be read */
{
/*!< Read a byte from the FLASH */
*pBuffer = sFLASH_SendByte(sFLASH_DUMMY_BYTE);
/*!< Point to the next location where the byte read will be saved */
printf("%c",*pBuffer);
pBuffer++;
}
/*!< Deselect the FLASH: Chip Select high */
sFLASH_CS_HIGH();
}
int main(void)
{
STM_EVAL_LEDInit(LED1);
STM_EVAL_LEDInit(LED2);
USART_Config();//USART配置
/* Initialize the SPI FLASH driver */
sFLASH_Init();
/* Write Tx_Buffer data to SPI FLASH memory */
WRITE_X25042(Tx_Buffer, FLASH_WRITE_ADDRESS, BufferSize);
printf("\n");
/* Read data from SPI FLASH memory */
READ_X25042(Rx_Buffer, FLASH_READ_ADDRESS, BufferSize);
printf("\n");
/* Check the correctness of written dada */
TransferStatus1 = Buffercmp(Tx_Buffer, Rx_Buffer, BufferSize);
/* TransferStatus1 = PASSED, if the transmitted and received data by SPI1
are the same */
/* TransferStatus1 = FAILED, if the transmitted and received data by SPI1
are different */
if(TransferStatus1 == PASSED)
{ STM_EVAL_LEDOn(LED1);
printf("SPI_EEPROM demo is successful \n"); }
else
{
STM_EVAL_LEDOn(LED2);
printf("SPI_EEPROM demo is failed \n");
}
while (1){}
}[/mw_shl_code]
| 
/2 
|手机版|OpenEdv-开源电子网
( 粤ICP备12000418号-1 )
发表于 2014-7-14 21:48:57
楼主
发表于 2014-7-14 22:42:13
