WinbondSPIFlashDataRecordWithFIFO源代码.rar

#include "w25xxx.h" #include "usart.h" #include "spi.h" #include "All_struct.h" #include "All_variable.h" #include "All_macro.h" #include "LCD.h" #include "rtc.h" #include "math.h" #include "stdlib.h" #include "string.h" #include "gpio.h" extern volatile uint8_t Work_Flag; uint16_t W25QXX_TYPE=W25Q64; //初始化SPI FLASH的IO口 void W25QXX_ReadRecordAddr(void); void W25QXX_Init(void) { uint8_t temp; // _LCD_ICON.LCDFlag_LOG=1; _LCD_ICON.FlashReady_Flag=Ture; W25QXX_CS(GPIO_PIN_SET); //SPI FLASH不选中 MX_SPI1_Init(); //初始化SPI W25QXX_TYPE=W25QXX_ReadID(); //读取FLASH ID. if(W25QXX_TYPE!=W25Q256) //SPI FLASH为W25Q256 { temp=W25QXX_ReadSR(3); //读取状态寄存器3，判断地址模式 if((temp&0X01)==0) //如果不是4字节地址模式,则进入4字节地址模式 { W25QXX_CS(GPIO_PIN_RESET); //选中 SPI1_ReadWriteByte(W25X_Enable4ByteAddr);//发送进入4字节地址模式指令 W25QXX_CS(GPIO_PIN_SET); //取消片选 } } W25QXX_TYPE=W25QXX_ReadID(); if(W25QXX_TYPE>W25Q64 || W25QXX_TYPE<W25x10) //检测不到Flash { _LCD_ICON.FlashReady_Flag=False; delay_ms(10); }else { // RECORD_Addr_Read(); // if(SYS_WorkParmData.RecordWriteAddr>RECORD_DATA_ADDR) // { // SYS_WorkParmData.RecordWriteAddr=0; // RECORD_Addr_Write(); // } } delay_ms(10); // RECORD_Addr_Read(); // W25QXX_Erase_Chip(); W25QXX_ReadRecordAddr(); } //读取W25QXX的状态寄存器，W25QXX一共有3个状态寄存器 //状态寄存器1： //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 //状态寄存器2： //BIT7 6 5 4 3 2 1 0 //SUS CMP LB3 LB2 LB1 (R) QE SRP1 //状态寄存器3： //BIT7 6 5 4 3 2 1 0 //HOLD/RST DRV1 DRV0 (R) (R) WPS ADP ADS //regno:状态寄存器号，范:1~3 //返回值:状态寄存器值 uint8_t W25QXX_ReadSR(uint8_t regno) { uint8_t byte=0,command=0; switch(regno) { case 1: command=W25X_ReadStatusReg1; //读状态寄存器1指令 break; case 2: command=W25X_ReadStatusReg2; //读状态寄存器2指令 break; case 3: command=W25X_ReadStatusReg3; //读状态寄存器3指令 break; default: command=W25X_ReadStatusReg1; break; } W25QXX_CS(GPIO_PIN_RESET); //使能器件 SPI1_ReadWriteByte(command); //发送读取状态寄存器命令 byte=SPI1_ReadWriteByte(0Xff); //读取一个字节 W25QXX_CS(GPIO_PIN_SET); //取消片选 return byte; } //写W25QXX状态寄存器 void W25QXX_Write_SR(uint8_t regno,uint8_t sr) { uint8_t command=0; switch(regno) { case 1: command=W25X_WriteStatusReg1; //写状态寄存器1指令 break; case 2: command=W25X_WriteStatusReg2; //写状态寄存器2指令 break; case 3: command=W25X_WriteStatusReg3; //写状态寄存器3指令 break; default: command=W25X_WriteStatusReg1; break; } W25QXX_CS(GPIO_PIN_RESET); //使能器件 SPI1_ReadWriteByte(command); //发送写取状态寄存器命令 SPI1_ReadWriteByte(sr); //写入一个字节 W25QXX_CS(GPIO_PIN_SET); //取消片选 } //W25QXX写使能 //将WEL置位 void W25QXX_Write_Enable(void) { W25QXX_CS(GPIO_PIN_RESET); //使能器件 SPI1_ReadWriteByte(W25X_WriteEnable); //发送写使能 W25QXX_CS(GPIO_PIN_SET); //取消片选 } //W25QXX写禁止 //将WEL清零 void W25QXX_Write_Disable(void) { W25QXX_CS(GPIO_PIN_RESET); //使能器件 SPI1_ReadWriteByte(W25X_WriteDisable); //发送写禁止指令 W25QXX_CS(GPIO_PIN_SET); //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 //0XEF18,表示芯片型号为W25Q256 uint16_t W25QXX_ReadID(void) { uint16_t Temp = 0; W25QXX_CS(GPIO_PIN_RESET); SPI1_ReadWriteByte(0x90);//发送读取ID命令 SPI1_ReadWriteByte(0x00); SPI1_ReadWriteByte(0x00); SPI1_ReadWriteByte(0x00); Temp|=SPI1_ReadWriteByte(0xFF)<<8; Temp|=SPI1_ReadWriteByte(0xFF); W25QXX_CS(GPIO_PIN_SET); 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; MX_SPI1_Init(); W25QXX_CS(GPIO_PIN_RESET); //使能器件 SPI1_ReadWriteByte(W25X_ReadData); //发送读取命令 if(W25QXX_TYPE==W25Q256) //如果是W25Q256的话地址为4字节的，要发送最高8位 { SPI1_ReadWriteByte((uint8_t)((ReadAddr)>>24)); } SPI1_ReadWriteByte((uint8_t)((ReadAddr)>>16)); //发送24bit地址 SPI1_ReadWriteByte((uint8_t)((ReadAddr)>>8)); SPI1_ReadWriteByte((uint8_t)ReadAddr); for(i=0; i<NumByteToRead; i++) { pBuffer[i]=SPI1_ReadWriteByte(0XFF); //循环读数 } W25QXX_CS(GPIO_PIN_SET); } //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 W25QXX_CS(GPIO_PIN_RESET); //使能器件 SPI1_ReadWriteByte(W25X_PageProgram); //发送写页命令 if(W25QXX_TYPE==W25Q256) //如果是W25Q256的话地址为4字节的，要发送最高8位 { SPI1_ReadWriteByte((uint8_t)((WriteAddr)>>24)); } SPI1_ReadWriteByte((uint8_t)((WriteAddr)>>16)); //发送24bit地址 SPI1_ReadWriteByte((uint8_t)((WriteAddr)>>8)); SPI1_ReadWriteByte((uint8_t)WriteAddr); for(i=0; i<NumByteToWrite; i++)SPI1_ReadWriteByte(pBuffer[i]); //循环写数 W25QXX_CS(GPIO_PIN_SET); //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 } }; } void W25QXX_Write_Init(void) { W25QXX_Write_Enable(); //SET WEL W25QXX_Write_SR(1,0); W25QXX_Wait_Busy(); //等待写入结束 } //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) //NumB