256_WriteDisable

{HAL_GPIO_WritePin(SPI5_NSS_GPIO_Port,

SPI5_NSS_Pin,

{HAL_GPIO_WritePin(SPI5_NSS_GPIO_Port,

SPI5_NSS_Pin,

拉低片选线开始通信SPI_FLASH_NSS_LOW();//

发送获取W25Q256芯片ID指令SPI_FLASH_SendByte(W25Q256_JedecDeviceID);//

接收数据temp0

拉高片选线结束通信SPI_FLASH_NSS_HIGH();temp

temp0

拉低片选线开始通信SPI_FLASH_NSS_LOW();//

发送写使能指令SPI_FLASH_SendByte(W25Q256_WriteEnable);//

}/***

SPI_FLASH_WaitForWriteEnd(void)

{uint8_t

拉低片选线开始通信SPI_FLASH_NSS_LOW();//

发送写状态寄存器1指令SPI_FLASH_SendByte(W25Q256_ReadStatusReg);do{//

获取写状态寄存器1的值并做判断。

0空闲、1忙碌FLASH_Status

while

使能写命令SPI_FLASH_WriteEnable();//

拉低片选线开始通信SPI_FLASH_NSS_LOW();//

发送擦除扇区命令SPI_FLASH_SendByte(W25Q256_SectorErase);//

发送擦除地址24

31bitSPI_FLASH_SendByte((SectorAddr

0xFF000000)

23bitSPI_FLASH_SendByte((SectorAddr

0xFF0000)

15bitSPI_FLASH_SendByte((SectorAddr

0xFF00)

7bitSPI_FLASH_SendByte(SectorAddr

0xFF);//

拉高片选线结束通信SPI_FLASH_NSS_HIGH();//

HAL_Delay(3000);//

等待擦除操作结束SPI_FLASH_WaitForOperaEnd();

}/***

使能写命令SPI_FLASH_WriteEnable();//

拉低片选线开始通信SPI_FLASH_NSS_LOW();//

发送写状态寄存器3命令SPI_FLASH_SendByte(W25Q256_WriteStatusRegister3);//

发送要写的数据SPI_FLASH_SendByte(0x02);//

拉高片选线结束通信SPI_FLASH_NSS_HIGH();//

拉低片选线开始通信SPI_FLASH_NSS_LOW();//

发送读状态寄存器3命令SPI_FLASH_SendByte(W25Q256_ReadStatusRegister3);//

读取数据temp

拉高片选线结束通信SPI_FLASH_NSS_HIGH();if

(0x02

拉低片选线开始通信SPI_FLASH_NSS_LOW();//

发送配置四字节模式指令SPI_FLASH_SendByte(W25Q256_Enter4ByteMode);//

拉高片选线结束通信SPI_FLASH_NSS_HIGH();}SPI_FLASH_WaitForOperaEnd();

}/***

NumByteToWrite写入数据长度。

必须小于等于SPI_FLASH_PerWritePageSize*

retval

使能写命令SPI_FLASH_WriteEnable();//

拉低片选线开始通信SPI_FLASH_NSS_LOW();//

发送页写入指令SPI_FLASH_SendByte(W25Q256_PageProgram);//

发送写入地址[24,31]bitSPI_FLASH_SendByte((WriteAddr

0xFF000000)

发送写入地址[16,23]bitSPI_FLASH_SendByte((WriteAddr

0xFF0000)

发送写入地址[8,15]bitSPI_FLASH_SendByte((WriteAddr

0xFF00)

发送写入地址[0,7]bitSPI_FLASH_SendByte(WriteAddr

0xFF);if

SPI_FLASH_PerWritePageSize){NumByteToWrite

SPI_FLASH_PerWritePageSize;printf(256\r\n);}for

(int

i){SPI_FLASH_SendByte(pBuffer[i]);}//

}/***

FALSH不定量数据写入函数调用本函数写入数据前需要先擦除扇区*

param

NumOfPage){SPI_FLASH_PageWrite(pBuffer,

WriteAddr,

NumByteToWrite);SPI_FLASH_WaitForOperaEnd();

等待操作完成}else{/*

i){SPI_FLASH_PageWrite(pBuffer,

WriteAddr,

NumByteToWrite);SPI_FLASH_WaitForOperaEnd();

等待操作完成WriteAddr

NumOfSingle);SPI_FLASH_WaitForOperaEnd();

等待操作完成}}else

count);SPI_FLASH_WaitForOperaEnd();

等待操作完成WriteAddr

temp);SPI_FLASH_WaitForOperaEnd();

等待操作完成}else

*/{SPI_FLASH_PageWrite(pBuffer,

WriteAddr,

NumByteToWrite);SPI_FLASH_WaitForOperaEnd();

等待操作完成}}else

SPI_FLASH_PageSize*/{/*先把距离页地址的count个数据减去计算需要写的页数和NumOfSingle然后写数据时先把原来减去的count个数据写入写满当前页*//*再写剩余数据即计算好的NumOfPage和NumOfSingle*/NumByteToWrite

count;NumOfPage

SPI_FLASH_PageSize;SPI_FLASH_PageWrite(pBuffer,

WriteAddr,

count);SPI_FLASH_WaitForOperaEnd();

等待操作完成WriteAddr

i){SPI_FLASH_PageWrite(pBuffer,

WriteAddr,

SPI_FLASH_PageSize);SPI_FLASH_WaitForOperaEnd();

等待操作完成WriteAddr

NumOfSingle){SPI_FLASH_PageWrite(pBuffer,

WriteAddr,

NumOfSingle);SPI_FLASH_WaitForOperaEnd();

等待操作完成}}}

拉低片选线开始通信SPI_FLASH_NSS_LOW();//

发送读取数据指令SPI_FLASH_SendByte(W25Q256_ReadData);//

发送读取地址[24,31]bitSPI_FLASH_SendByte((ReadAddr

0xFF000000)

发送读取地址[16,23]bitSPI_FLASH_SendByte((ReadAddr

0xFF0000)

发送读取地址[8,15]bitSPI_FLASH_SendByte((ReadAddr

0xFF00)

发送读取地址[0,7]bitSPI_FLASH_SendByte(ReadAddr

0xFF);//

拉高片选线结束通信SPI_FLASH_NSS_HIGH();SPI_FLASH_WaitForOperaEnd();

等待操作完成

SPI_FLASH_WaitForOperaEnd(void)

{uint8_t

拉低片选线开始通信SPI_FLASH_NSS_LOW();//

发送读状态寄存器1指令SPI_FLASH_SendByte(W25Q256_ReadStatusReg);do{//

while

Configuration--------------------------------------------------------*//*

Reset

*/MX_GPIO_Init();MX_SPI5_Init();MX_USART1_UART_Init();/*

USER

进入4字节地址模式SPI_FLASH_FOUR_MODE();printf(W25Q256

SPI

SPI_FLASH_ReadID();printf(device_ID

0x%x\r\n,

device_ID);SPI_FLASH_SectorErase(0x00);

擦除扇区数据//

读取擦除后的数据SPI_FLASH_BufferRead(ReadBuff,

0x00,

4096);printf(*****************读取擦出后的数据*****************\r\n);for

(int

i;}SPI_FLASH_BufferWrite(WriteBuff,

0xFF,

256);SPI_FLASH_WaitForOperaEnd();

等待操作完成//

读数据SPI_FLASH_BufferRead(ReadBuff,

0xFF,

256);SPI_FLASH_WaitForOperaEnd();

等待操作完成printf(*****************读取写入后的数据*****************\r\n);for

(int