/** * @file w25qxx.c * * @brief Create by AnKun on 2020/6/18 * */ #include "w25qxx.h" #include "spi.h" uint16_t W25QXX_TYPE = 0; uint32_t W25QXX_SIZE = 0; uint8_t W25QXX_UID[8]; static void delay_us(uint32_t us) { uint32_t delay = (HAL_RCC_GetHCLKFreq() / 4000000 * us); while (delay--) { ; } } //SPI读写一个字节 //TxData:要写入的字节 //返回值:读取到的字节 static uint8_t W25QXX_SPI_ReadWriteByte(uint8_t TxData) { uint8_t RxData = 0X00; if(HAL_SPI_TransmitReceive(W25QXX_SPI_Handle, &TxData, &RxData, 1, 10) != HAL_OK) { RxData = 0XFF; } return RxData; } //4Kbytes为一个Sector //16个扇区为1个Block //W25Q128 //容量为16M字节,共有128个Block,4096个Sector //初始化SPI FLASH的IO口 int W25QXX_Init(void) { MX_SPI1_Init(); W25QXX_CS_L(); /* 拉低选中 */ W25QXX_SPI_ReadWriteByte(0XFF); W25QXX_CS_H(); /* 拉高取消 */ W25QXX_TYPE = W25QXX_ReadID(); // 读取FLASH ID. W25QXX_SIZE = W25QXX_ReadCapacity(); // 读取容量 W25QXX_ReadUniqueID(W25QXX_UID); // 读取唯一ID if((W25QXX_TYPE & 0XEF00) != 0XEF00) { return -1; } return 0; } //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; W25QXX_CS_L(); //使能器件 W25QXX_SPI_ReadWriteByte(W25X_ReadStatusReg); //发送读取状态寄存器命令 byte = W25QXX_SPI_ReadWriteByte(0Xff); //读取一个字节 W25QXX_CS_H(); //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) { W25QXX_CS_L(); //使能器件 W25QXX_SPI_ReadWriteByte(W25X_WriteStatusReg); //发送写取状态寄存器命令 W25QXX_SPI_ReadWriteByte(sr); //写入一个字节 W25QXX_CS_H(); //取消片选 } //W25QXX写使能 //将WEL置位 void W25QXX_Write_Enable(void) { W25QXX_CS_L(); //使能器件 W25QXX_SPI_ReadWriteByte(W25X_WriteEnable); //发送写使能 W25QXX_CS_H(); //取消片选 } //W25QXX写禁止 //将WEL清零 void W25QXX_Write_Disable(void) { W25QXX_CS_L(); //使能器件 W25QXX_SPI_ReadWriteByte(W25X_WriteDisable); //发送写禁止指令 W25QXX_CS_H(); //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; W25QXX_CS_L(); W25QXX_SPI_ReadWriteByte(0x90); //发送读取ID命令 W25QXX_SPI_ReadWriteByte(0x00); W25QXX_SPI_ReadWriteByte(0x00); W25QXX_SPI_ReadWriteByte(0x00); Temp |= W25QXX_SPI_ReadWriteByte(0xFF) << 8; Temp |= W25QXX_SPI_ReadWriteByte(0xFF); W25QXX_CS_H(); return Temp; } uint32_t W25QXX_ReadCapacity(void) { int i = 0; uint8_t arr[4] = {0,0,0,0}; W25QXX_CS_L(); W25QXX_SPI_ReadWriteByte(0x5A); W25QXX_SPI_ReadWriteByte(0x00); W25QXX_SPI_ReadWriteByte(0x00); W25QXX_SPI_ReadWriteByte(0x84); W25QXX_SPI_ReadWriteByte(0x00); for(i = 0; i < sizeof(arr); i++) { arr[i] = W25QXX_SPI_ReadWriteByte(0xFF); } W25QXX_CS_H(); return ((((*(uint32_t *)arr)) + 1) >> 3); } void W25QXX_ReadUniqueID(uint8_t UID[8]) { int i = 0; W25QXX_CS_L(); W25QXX_SPI_ReadWriteByte(0x4B); W25QXX_SPI_ReadWriteByte(0x00); W25QXX_SPI_ReadWriteByte(0x00); W25QXX_SPI_ReadWriteByte(0x00); W25QXX_SPI_ReadWriteByte(0x00); for(i = 0; i < 8; i++) { UID[i] = W25QXX_SPI_ReadWriteByte(0xFF); } W25QXX_CS_H(); } //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) { volatile static int timeReadTemp1, timeReadTemp2, timeReadTemp3, timeReadTemp4, timeReadTemp5; timeReadTemp1 = HAL_GetTick(); uint16_t i; W25QXX_CS_L(); //使能器件 W25QXX_SPI_ReadWriteByte(W25X_ReadData); //发送读取命令 W25QXX_SPI_ReadWriteByte((uint8_t)((ReadAddr) >> 16)); //发送24bit地址 W25QXX_SPI_ReadWriteByte((uint8_t)((ReadAddr) >> 8)); W25QXX_SPI_ReadWriteByte((uint8_t)ReadAddr); timeReadTemp2 = HAL_GetTick(); for (i = 0; i < NumByteToRead; i++) { pBuffer[i] = W25QXX_SPI_ReadWriteByte(0XFF); //循环读数 } W25QXX_CS_H(); timeReadTemp3 = HAL_GetTick(); timeReadTemp4 = NumByteToRead; timeReadTemp5 = ReadAddr; } //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_L(); //使能器件 W25QXX_SPI_ReadWriteByte(W25X_PageProgram); //发送写页命令 W25QXX_SPI_ReadWriteByte((uint8_t)((WriteAddr) >> 16)); //发送24bit地址 W25QXX_SPI_ReadWriteByte((uint8_t)((WriteAddr) >> 8)); W25QXX_SPI_ReadWriteByte((uint8_t)WriteAddr); for (i = 0; i < NumByteToWrite; i++) W25QXX_SPI_ReadWriteByte(pBuffer[i]); //循环写数 W25QXX_CS_H(); //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) { // volatile static int timeReadTemp1, timeReadTemp2, timeReadTemp3, timeReadTemp4, timeReadTemp5, timeReadTemp6; 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 if (NumByteToWrite <= secremain) secremain = NumByteToWrite; //不大于4096个字节 while (1) { // timeReadTemp1 = HAL_GetTick(); W25QXX_Read(W25QXX_BUF, secpos * 4096, 4096); //读出整个扇区的内容 // timeReadTemp2 = HAL_GetTick(); 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 // timeReadTemp3 = HAL_GetTick(); 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 // timeReadTemp4 = HAL_GetTick(); // timeReadTemp5 = NumByteToWrite; // timeReadTemp6 = WriteAddr; } 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 } }; // 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(); W25QXX_CS_L(); //使能器件 W25QXX_SPI_ReadWriteByte(W25X_ChipErase); //发送片擦除命令 W25QXX_CS_H(); //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 Dst_Addr *= 4096; W25QXX_Write_Enable(); //SET WEL W25QXX_Wait_Busy(); W25QXX_CS_L(); //使能器件 W25QXX_SPI_ReadWriteByte(W25X_SectorErase); //发送扇区擦除指令 W25QXX_SPI_ReadWriteByte((uint8_t)((Dst_Addr) >> 16)); //发送24bit地址 W25QXX_SPI_ReadWriteByte((uint8_t)((Dst_Addr) >> 8)); W25QXX_SPI_ReadWriteByte((uint8_t)Dst_Addr); W25QXX_CS_H(); //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) { W25QXX_CS_L(); //使能器件 W25QXX_SPI_ReadWriteByte(W25X_PowerDown); //发送掉电命令 W25QXX_CS_H(); //取消片选 delay_us(3); //等待TPD } //唤醒 void W25QXX_WAKEUP(void) { W25QXX_CS_L(); //使能器件 W25QXX_SPI_ReadWriteByte(W25X_ReleasePowerDown); // send W25X_PowerDown command 0xAB W25QXX_CS_H(); //取消片选 delay_us(3); //等待TRES1 }