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本帖最后由 hero245 于 2022-3-19 11:07 编辑
用的是原子哥的例程
- #include "W25Q128.h"
- uint8_t SPIEERPOM[10]={1,2,3,4,5,6,7,8,9,10};
- uint8_t SPIREEPROM[10]={0,0,0,0,0,0,0,0,0,0};
- void GPIO_SPI_int(void)
- {
- stc_gpio_cfg_t SPIGPIOStruct;
- DDL_ZERO_STRUCT(SPIGPIOStruct);
- //Sysctrl_SetPeripheralGate(SysctrlPeripheralGpio,TRUE);
- ///< SPI0引脚配置:主机
- SPIGPIOStruct.enDrv = GpioDrvH;
- SPIGPIOStruct.enDir = GpioDirOut;
- Gpio_Init(SPI0_CS_PORT, SPI0_CS_PIN, &SPIGPIOStruct);
- Gpio_SetAfMode(SPI0_CS_PORT, SPI0_CS_PIN, GpioAf1); ///<配置SPI0_CS
- Gpio_Init(SPI0_SCK_PORT, SPI0_SCK_PIN, &SPIGPIOStruct);
- Gpio_SetAfMode(SPI0_SCK_PORT, SPI0_SCK_PIN, GpioAf1); ///<配置SPI0_SCK
- Gpio_Init(SPI0_MOSI_PORT, SPI0_MOSI_PIN, &SPIGPIOStruct);
- Gpio_SetAfMode(SPI0_MOSI_PORT, SPI0_MOSI_PIN, GpioAf1); ///<配置SPI0_MOSI
- SPIGPIOStruct.enDir = GpioDirIn;
- Gpio_Init(SPI0_MISO_PORT, SPI0_MISO_PIN, &SPIGPIOStruct);
- Gpio_SetAfMode(SPI0_MISO_PORT, SPI0_MISO_PIN, GpioAf1); ///<配置SPI0_MISO
- }
- /**
- ******************************************************************************
- ** \brief 初始化SPI
- **
- ** \return 无
- ******************************************************************************/
- static void App_SPIInit(void)
- {
- stc_spi_cfg_t SpiInitStruct;
- ///< 打开外设时钟
- Sysctrl_SetPeripheralGate(SysctrlPeripheralSpi0,TRUE);
- ///<复位模块
- Reset_RstPeripheral0(ResetMskSpi0);
- //SPI0模块配置:主机
- SpiInitStruct.enSpiMode = SpiMskMaster; //配置位主机模式
- SpiInitStruct.enPclkDiv = SpiClkMskDiv128; //波特率:PCLK/2
- SpiInitStruct.enCPHA = SpiMskCphafirst; //第一边沿采样
- SpiInitStruct.enCPOL = SpiMskcpollow; //极性为低
- Spi_Init(M0P_SPI0, &SpiInitStruct);
- }
- void initSPIFun(void)
- {
- GPIO_SPI_int();
-
- Spi_SetCS(M0P_SPI0, TRUE); //取消片选
-
-
-
-
- App_SPIInit();
- }
- //读取W25QXX的状态寄存器
- //BIT7 6 5 4 3 2 1 0
- //SPR RV TB BP2 BP1 BP0 WEL BUSY
- //SPR:默认0,状态寄存器保护位,配合WP使用
- //TB,BP2,BP1,BP0:FLASH区域写保护设置
- //WEL:写使能锁定
- //BUSY:忙标记位(1,忙;0,空闲)
- //默认:0x00
- uint8_t W25QXX_ReadSR(void)
- {
- uint8_t byte=0;
- Spi_SetCS(M0P_SPI0, FALSE); //使能器件
- delay10us(2);
- Spi_RWByte(M0P_SPI0,W25X_ReadStatusReg); //发送读取状态寄存器命令
- byte=Spi_RWByte(M0P_SPI0,0Xff); //读取一个字节
- Spi_SetCS(M0P_SPI0, TRUE); //取消片选
- return byte;
- }
- //写W25QXX状态寄存器
- //只有SPR,TB,BP2,BP1,BP0(bit 7,5,4,3,2)可以写!!!
- void W25QXX_Write_SR(uint8_t sr)
- {
- Spi_SetCS(M0P_SPI0, FALSE); //使能器件
- delay10us(2);
- Spi_RWByte(M0P_SPI0,W25X_WriteStatusReg); //发送写取状态寄存器命令
- Spi_RWByte(M0P_SPI0,sr); //写入一个字节
- Spi_SetCS(M0P_SPI0, TRUE); //取消片选
- }
- //W25QXX写使能
- //将WEL置位
- void W25QXX_Write_Enable(void)
- {
- Spi_SetCS(M0P_SPI0, FALSE); //使能器件
- delay10us(2);
- Spi_RWByte(M0P_SPI0, W25X_WriteEnable); //发送写使能
- Spi_SetCS(M0P_SPI0, TRUE); //取消片选
- }
- //W25QXX写禁止
- //将WEL清零
- void W25QXX_Write_Disable(void)
- {
- Spi_SetCS(M0P_SPI0, FALSE); //使能器件
- delay10us(2);
- Spi_RWByte(M0P_SPI0, W25X_WriteDisable); //发送写禁止指令
- Spi_SetCS(M0P_SPI0, TRUE); //取消片选
- }
- //读取芯片ID
- //返回值如下:
- //0XEF13,表示芯片型号为W25Q80
- //0XEF14,表示芯片型号为W25Q16
- //0XEF15,表示芯片型号为W25Q32
- //0XEF16,表示芯片型号为W25Q64
- //0XEF17,表示芯片型号为W25Q128
- uint16_t W25QXX_ReadID(void)
- {
- uint16_t Temp = 0;
- Spi_SetCS(M0P_SPI0, FALSE);
- delay10us(2);
- Spi_RWByte(M0P_SPI0, 0x90);//发送读取ID命令
- Spi_RWByte(M0P_SPI0, 0x00);
- Spi_RWByte(M0P_SPI0, 0x00);
- Spi_RWByte(M0P_SPI0, 0x00);
- Temp|=Spi_RWByte(M0P_SPI0,0xFF)<<8;
- Temp|=Spi_RWByte(M0P_SPI0,0xFF);
- Spi_SetCS(M0P_SPI0, TRUE);
- return Temp;
- }
- //////////////////////////////////////////////////////////////////////////////////////////////////////////////
- //读取SPI FLASH
- //在指定地址开始读取指定长度的数据
- //pBuffer:数据存储区
- //ReadAddr:开始读取的地址(24bit)
- //NumByteToRead:要读取的字节数(最大65535)
- void W25QXX_Read(uint8_t* pBuffer,uint32_t ReadAddr,uint16_t NumByteToRead)
- {
- uint16_t i;
- Spi_SetCS(M0P_SPI0, FALSE); //使能器件
- delay10us(2);
- Spi_RWByte(M0P_SPI0, W25X_ReadData); //发送读取命令
- Spi_RWByte(M0P_SPI0, (uint8_t)((ReadAddr)>>16)); //发送24bit地址
- Spi_RWByte(M0P_SPI0, (uint8_t)((ReadAddr)>>8));
- Spi_RWByte(M0P_SPI0, (uint8_t)ReadAddr);
- for(i=0; i<NumByteToRead; i++)
- {
- pBuffer[i]=Spi_RWByte(M0P_SPI0, 0XFF); //循环读数
- }
- Spi_SetCS(M0P_SPI0, TRUE);
- }
- void W254_readtest(uint32_t ReadAddr,uint16_t NumByteToRead)
- {
- uint16_t i;
- Spi_SetCS(M0P_SPI0, FALSE); //使能器件
- delay10us(2);
- Spi_RWByte(M0P_SPI0, W25X_ReadData); //发送读取命令
- Spi_RWByte(M0P_SPI0, (uint8_t)((ReadAddr)>>16)); //发送24bit地址
- Spi_RWByte(M0P_SPI0, (uint8_t)((ReadAddr)>>8));
- Spi_RWByte(M0P_SPI0, (uint8_t)ReadAddr);
- for(i=0; i<NumByteToRead; i++)
- {
- //pBuffer[i]=Spi_RWByte(M0P_SPI0, 0XFF); //循环读数
-
- SPIREEPROM[i]=Spi_RWByte(M0P_SPI0, 0XFF); //循环读数
-
-
- }
- Spi_SetCS(M0P_SPI0, TRUE);
- }
- //SPI在一页(0~65535)内写入少于256个字节的数据
- //在指定地址开始写入最大256字节的数据
- //pBuffer:数据存储区
- //WriteAddr:开始写入的地址(24bit)
- //NumByteToWrite:要写入的字节数(最大256),该数不应该超过该页的剩余字节数!!!
- void W25QXX_Write_Page(uint8_t* pBuffer,uint32_t WriteAddr,uint16_t NumByteToWrite)
- {
- uint16_t i;
- W25QXX_Write_Enable(); //SET WEL
- Spi_SetCS(M0P_SPI0, FALSE); //使能器件
- delay10us(2);
- Spi_RWByte(M0P_SPI0, W25X_PageProgram); //发送写页命令
- Spi_RWByte(M0P_SPI0, (uint8_t)((WriteAddr)>>16)); //发送24bit地址
- Spi_RWByte(M0P_SPI0, (uint8_t)((WriteAddr)>>8));
- Spi_RWByte(M0P_SPI0, (uint8_t)WriteAddr);
- for(i=0; i<NumByteToWrite; i++)
- Spi_RWByte(M0P_SPI0, pBuffer[i]); //循环写数
-
- Spi_SetCS(M0P_SPI0, TRUE); //取消片选
- W25QXX_Wait_Busy(); //等待写入结束
- }
- //无检验写SPI FLASH
- //必须确保所写的地址范围内的数据全部为0XFF,否则在非0XFF处写入的数据将失败!
- //具有自动换页功能
- //在指定地址开始写入指定长度的数据,但是要确保地址不越界!
- //pBuffer:数据存储区
- //WriteAddr:开始写入的地址(24bit)
- //NumByteToWrite:要写入的字节数(最大65535)
- //CHECK OK
- void W25QXX_Write_NoCheck(uint8_t* pBuffer,uint32_t WriteAddr,uint16_t NumByteToWrite)
- {
- uint16_t pageremain;
- pageremain=256-WriteAddr%256; //单页剩余的字节数
- if(NumByteToWrite<=pageremain)
- pageremain=NumByteToWrite;//不大于256个字节
- while(1)
- {
- W25QXX_Write_Page(pBuffer,WriteAddr,pageremain);
- if(NumByteToWrite==pageremain)
- break;//写入结束了
- else //NumByteToWrite>pageremain
- {
- pBuffer+=pageremain;
- WriteAddr+=pageremain;
- NumByteToWrite-=pageremain; //减去已经写入了的字节数
- if(NumByteToWrite>256)
- pageremain=256; //一次可以写入256个字节
- else
- pageremain=NumByteToWrite; //不够256个字节了
- }
- };
- }
- //写SPI FLASH
- //在指定地址开始写入指定长度的数据
- //该函数带擦除操作!
- //pBuffer:数据存储区
- //WriteAddr:开始写入的地址(24bit)
- //NumByteToWrite:要写入的字节数(最大65535)
- uint8_t W25QXX_BUFFER[4096];
- void W25QXX_Write(uint8_t* pBuffer,uint32_t WriteAddr,uint16_t NumByteToWrite)
- {
- uint32_t secpos;
- uint16_t secoff;
- uint16_t secremain;
- uint16_t i;
- uint8_t * W25QXX_BUF;
- W25QXX_BUF=W25QXX_BUFFER;
- secpos=WriteAddr/4096;//扇区地址
- secoff=WriteAddr%4096;//在扇区内的偏移
- secremain=4096-secoff;//扇区剩余空间大小
- //printf("ad:%X,nb:%X\r\n",WriteAddr,NumByteToWrite);//测试用
- if(NumByteToWrite<=secremain)
- secremain=NumByteToWrite;//不大于4096个字节
- while(1)
- {
- W25QXX_Read(W25QXX_BUF,secpos*4096,4096);//读出整个扇区的内容
- for(i=0; i<secremain; i++) //校验数据
- {
- if(W25QXX_BUF[secoff+i]!=0XFF)
- break;//需要擦除
- }
- if(i<secremain)//需要擦除
- {
- W25QXX_Erase_Sector(secpos);//擦除这个扇区
- for(i=0; i<secremain; i++) //复制
- {
- W25QXX_BUF[i+secoff]=pBuffer[i];
- }
- W25QXX_Write_NoCheck(W25QXX_BUF,secpos*4096,4096);//写入整个扇区
- }
- else
- W25QXX_Write_NoCheck(pBuffer,WriteAddr,secremain); //写已经擦除了的,直接写入扇区剩余区间.
-
-
- if(NumByteToWrite==secremain)
- break;//写入结束了
- else//写入未结束
- {
- secpos++;//扇区地址增1
- secoff=0;//偏移位置为0
- pBuffer+=secremain; //指针偏移
- WriteAddr+=secremain;//写地址偏移
- NumByteToWrite-=secremain; //字节数递减
- if(NumByteToWrite>4096)
- secremain=4096; //下一个扇区还是写不完
- else
- secremain=NumByteToWrite; //下一个扇区可以写完了
- }
- };
- }
- //擦除整个芯片
- //等待时间超长...
- void W25QXX_Erase_Chip(void)
- {
- W25QXX_Write_Enable(); //SET WEL
- W25QXX_Wait_Busy();
- Spi_SetCS(M0P_SPI0, FALSE); //使能器件
- Spi_RWByte(M0P_SPI0, W25X_ChipErase); //发送片擦除命令
- Spi_SetCS(M0P_SPI0, TRUE); //取消片选
- W25QXX_Wait_Busy(); //等待芯片擦除结束
- }
- //擦除一个扇区
- //Dst_Addr:扇区地址 根据实际容量设置
- //擦除一个山区的最少时间:150ms
- void W25QXX_Erase_Sector(uint32_t Dst_Addr)
- {
- //监视falsh擦除情况,测试用
- printf("fe:%x\r\n",Dst_Addr);
- Dst_Addr*=4096;
- W25QXX_Write_Enable(); //SET WEL
- W25QXX_Wait_Busy();
- Spi_SetCS(M0P_SPI0, FALSE); //使能器件
- Spi_RWByte(M0P_SPI0, W25X_SectorErase); //发送扇区擦除指令
- Spi_RWByte(M0P_SPI0, (uint8_t)((Dst_Addr)>>16)); //发送24bit地址
- Spi_RWByte(M0P_SPI0, (uint8_t)((Dst_Addr)>>8));
- Spi_RWByte(M0P_SPI0, (uint8_t)Dst_Addr);
- Spi_SetCS(M0P_SPI0, TRUE); //取消片选
- W25QXX_Wait_Busy(); //等待擦除完成
- }
- //等待空闲
- void W25QXX_Wait_Busy(void)
- {
- while((W25QXX_ReadSR()&0x01)==0x01); // 等待BUSY位清空
- }
- //进入掉电模式
- void W25QXX_PowerDown(void)
- {
- Spi_SetCS(M0P_SPI0, FALSE); //使能器件
- Spi_RWByte(M0P_SPI0, W25X_PowerDown); //发送掉电命令
- Spi_SetCS(M0P_SPI0, TRUE); //取消片选
- delay10us(1); //等待TPD
- }
- //唤醒
- void W25QXX_WAKEUP(void)
- {
- Spi_SetCS(M0P_SPI0, FALSE); //使能器件
- Spi_RWByte(M0P_SPI0, W25X_ReleasePowerDown); // send W25X_PowerDown command 0xAB
- Spi_SetCS(M0P_SPI0, TRUE); //取消片选
- delay10us(1); //等待TRES1
- }
复制代码
成功读取ID
写不成功
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