Initial commit
This commit is contained in:
351
FW/Core/my_src/w25qxx.c
Normal file
351
FW/Core/my_src/w25qxx.c
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#include "w25qxx.h"
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#define GET_CHIP_SELECT() LL_GPIO_IsOutputPinSet(GPIOC,LL_GPIO_PIN_1)
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unsigned short W25QXX_TYPE = 1;
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unsigned short norflash_get_busy_flag[2] = {0,0};
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unsigned short norflash_err_flag[2] = {0,0};
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//4Kbytes为一个Sector
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//16个扇区为1个Block
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//W25Q128
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//容量为16M字节,共有256个Block,4096个Sector
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static void wait(void)
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{
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__nop();
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__nop();
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__nop();
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__nop();
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__nop();
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__nop();
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}
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//初始化SPI FLASH的IO口
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void W25QXX_Init(void)
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{
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W25QXX_Write_Enable();
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W25QXX_Reset();
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HAL_Delay(10);
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W25QXX_Write_Enable();
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W25QXX_Qspi_Enable(); //使能QSPI模式
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W25QXX_TYPE = W25QXX_ReadID(); //读取FLASH ID.
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W25QXX_Wait_Busy();
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HAL_Delay(2);
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}
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void W25QXX_Qspi_Enable(void)
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{
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unsigned char stareg2;
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stareg2=W25QXX_ReadSR(2);
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do{
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W25QXX_Write_Enable();
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stareg2 |= 0x02;
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W25QXX_Write_SR(2,stareg2);
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HAL_Delay(1);
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stareg2 = W25QXX_ReadSR(2);
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}while(!(stareg2 & 0x02));
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}
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void W25QXX_Qspi_Disable(void)
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{
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unsigned char stareg2;
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stareg2=W25QXX_ReadSR(2);
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do{
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W25QXX_Write_Enable();
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stareg2 &=~0x02;
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W25QXX_Write_SR(2,stareg2);
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HAL_Delay(1);
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stareg2 = W25QXX_ReadSR(2);
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}while(stareg2 & 0x02);
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}
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unsigned char W25QXX_ReadSR(unsigned char regno)
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{
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unsigned char byte=0,command=0;
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switch(regno){
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case 1:
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command = W25Qx_CMD_ReadStatusReg1; //读状态寄存器1指令
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break;
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case 2:
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command = W25Qx_CMD_ReadStatusReg2; //读状态寄存器2指令
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break;
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case 3:
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command = W25Qx_CMD_ReadStatusReg3; //读状态寄存器3指令
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break;
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default:
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command = W25Qx_CMD_ReadStatusReg1;
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break;
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}
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wait();
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QSPI_Send_CMD(command,0,0,QSPI_INSTRUCTION_1_LINE,QSPI_ADDRESS_NONE,QSPI_ADDRESS_8_BITS,QSPI_DATA_1_LINE);
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QSPI_Receive(&byte,1);
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return byte;
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}
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//写W25QXX状态寄存器
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void W25QXX_Write_SR(unsigned char regno,unsigned char sr)
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{
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unsigned char command=0;
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switch(regno){
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case 1:
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command = W25Qx_CMD_WriteStatusReg1; //写状态寄存器1指令
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break;
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case 2:
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command = W25Qx_CMD_WriteStatusReg2; //写状态寄存器2指令
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break;
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case 3:
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command = W25Qx_CMD_WriteStatusReg3; //写状态寄存器3指令
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break;
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default:
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command = W25Qx_CMD_WriteStatusReg1;
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break;
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}
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QSPI_Send_CMD(command,0,0, QSPI_INSTRUCTION_1_LINE,QSPI_ADDRESS_NONE,QSPI_ADDRESS_8_BITS,QSPI_DATA_1_LINE);
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QSPI_Transmit(&sr,1);
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}
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void W25QXX_Write_Enable(void)
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{
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unsigned char stareg1;
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stareg1=W25QXX_ReadSR(1); //先读出状态寄存器1的原始值
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do{
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QSPI_Send_CMD(W25Qx_CMD_WriteEnable,0,0,QSPI_INSTRUCTION_1_LINE,QSPI_ADDRESS_NONE,QSPI_ADDRESS_8_BITS,QSPI_DATA_NONE);
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wait();
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stareg1 = W25QXX_ReadSR(1);
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}while(!(stareg1 & 0x02)); //WE位未使能
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}
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void W25QXX_Write_Disable(void)
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{
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QSPI_Send_CMD(W25Qx_CMD_WriteDisable,0,0,QSPI_INSTRUCTION_1_LINE,QSPI_ADDRESS_NONE,QSPI_ADDRESS_8_BITS,QSPI_DATA_NONE);
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}
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//返回值如下:
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//0XEF13,表示芯片型号为W25Q80
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//0XEF14,表示芯片型号为W25Q16
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//0XEF15,表示芯片型号为W25Q32
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//0XEF16,表示芯片型号为W25Q64
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//0XEF17,表示芯片型号为W25Q128
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//0XEF18,表示芯片型号为W25Q256
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unsigned short W25QXX_ReadID(void)
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{
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unsigned char temp[2];
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unsigned short deviceid;
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QSPI_Send_CMD(W25Qx_CMD_ManufactDeviceID,0,0,QSPI_INSTRUCTION_1_LINE,QSPI_ADDRESS_1_LINE,QSPI_ADDRESS_24_BITS,QSPI_DATA_1_LINE);
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QSPI_Receive(temp,2);
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deviceid=(temp[0]<<8)|temp[1];
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return deviceid;
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}
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//读取SPI FLASH,仅支持QPI模式
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//在指定地址开始读取指定长度的数据
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//pBuffer:数据存储区
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//ReadAddr:开始读取的地址(最大32bit)
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//NumByteToRead:要读取的字节数(最大65535)
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void W25QXX_Read(unsigned char* pBuffer,unsigned int ReadAddr,unsigned short NumByteToRead)
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{
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if((ReadAddr + NumByteToRead) > NOR_FLASH_SIZE)return;
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QSPI_Send_CMD(W25Qx_CMD_Quad_Read,ReadAddr,8,QSPI_INSTRUCTION_1_LINE,QSPI_ADDRESS_1_LINE,QSPI_ADDRESS_24_BITS,QSPI_DATA_4_LINES);
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QSPI_Receive(pBuffer,NumByteToRead);
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}
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//SPI在一页(0~65535)内写入少于256个字节的数据
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//在指定地址开始写入最大256字节的数据
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//pBuffer:数据存储区
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//WriteAddr:开始写入的地址(最大32bit)
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//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!!!
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void W25QXX_Write_Page(unsigned char* pBuffer,unsigned int WriteAddr,unsigned short NumByteToWrite)
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{
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if((WriteAddr + NumByteToWrite) > NOR_FLASH_SIZE)return;
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W25QXX_Write_Enable();
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QSPI_Send_CMD(W25Qx_CMD_Quad_PageProgram,WriteAddr,0,QSPI_INSTRUCTION_1_LINE,QSPI_ADDRESS_1_LINE,QSPI_ADDRESS_24_BITS,QSPI_DATA_4_LINES);
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QSPI_Transmit(pBuffer,NumByteToWrite);
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wait();
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W25QXX_Wait_Busy();
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}
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void W25QXX_Write_Byte_no_wait(unsigned char* pBuffer,unsigned int WriteAddr,unsigned short NumByteToWrite)
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{
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if(((WriteAddr&0xFF) + NumByteToWrite) > NOR_PAGE_SIZE)return;
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W25QXX_Write_Enable();
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QSPI_Send_CMD(W25Qx_CMD_Quad_PageProgram,WriteAddr,0,QSPI_INSTRUCTION_1_LINE,QSPI_ADDRESS_1_LINE,QSPI_ADDRESS_24_BITS,QSPI_DATA_4_LINES);
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QSPI_Transmit(pBuffer,NumByteToWrite);
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wait();
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}
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//无检验写SPI FLASH
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//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!
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//具有自动换页功能
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//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!
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//pBuffer:数据存储区
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//WriteAddr:开始写入的地址(最大32bit)
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//NumByteToWrite:要写入的字节数(最大65535)
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//CHECK OK
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void W25QXX_Write_NoCheck(unsigned char* pBuffer,unsigned int WriteAddr,unsigned short NumByteToWrite)
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{
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unsigned short pageremain;
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if((WriteAddr + NumByteToWrite) > NOR_FLASH_SIZE)return;
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pageremain=256-WriteAddr%256; //单页剩余的字节数
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if(NumByteToWrite<=pageremain)pageremain=NumByteToWrite;//不大于256个字节
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while(1){
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W25QXX_Write_Page(pBuffer,WriteAddr,pageremain);
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if(NumByteToWrite==pageremain)break;//写入结束了
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else //NumByteToWrite>pageremain
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{
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pBuffer+=pageremain;
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WriteAddr+=pageremain;
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NumByteToWrite-=pageremain; //减去已经写入了的字节数
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if(NumByteToWrite>256)pageremain=256; //一次可以写入256个字节
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else pageremain=NumByteToWrite; //不够256个字节了
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}
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}
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}
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//写SPI FLASH
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//在指定地址开始写入指定长度的数据
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//该函数带擦除操作!
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//pBuffer:数据存储区
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//WriteAddr:开始写入的地址(最大32bit)
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//NumByteToWrite:要写入的字节数(最大65535)
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unsigned char W25QXX_BUFFER[4096];
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void W25QXX_Write(unsigned char* pBuffer,unsigned int WriteAddr,unsigned short NumByteToWrite)
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{
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unsigned int secpos;
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unsigned short secoff;
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unsigned short secremain;
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unsigned short i;
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unsigned char * W25QXX_BUF;
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if((WriteAddr + NumByteToWrite) > NOR_FLASH_SIZE)return;
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W25QXX_BUF=W25QXX_BUFFER;
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secpos=WriteAddr/4096;//扇区地址
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secoff=WriteAddr%4096;//在扇区内的偏移
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secremain=4096-secoff;//扇区剩余空间大小
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//printf("ad:%X,nb:%X\r\n",WriteAddr,NumByteToWrite);//测试用
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if(NumByteToWrite<=secremain)secremain=NumByteToWrite;//不大于4096个字节
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while(1){
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W25QXX_Read(W25QXX_BUF,secpos*4096,4096);//读出整个扇区的内容
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for(i=0;i<secremain;i++){//校验数据
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if(W25QXX_BUF[secoff+i]!=0XFF)break;//需要擦除
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}
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if(i<secremain){//需要擦除
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W25QXX_Erase_Sector(secpos*4096);//擦除这个扇区
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for(i=0;i<secremain;i++){ //复制
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W25QXX_BUF[i+secoff]=pBuffer[i];
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}
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W25QXX_Write_NoCheck(W25QXX_BUF,secpos*4096,4096);//写入整个扇区
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}else W25QXX_Write_NoCheck(pBuffer,WriteAddr,secremain);//写已经擦除了的,直接写入扇区剩余区间.
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if(NumByteToWrite==secremain)break;//写入结束了
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else{//写入未结束
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secpos++;//扇区地址增1
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secoff=0;//偏移位置为0
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pBuffer+=secremain; //指针偏移
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WriteAddr+=secremain;//写地址偏移
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NumByteToWrite-=secremain; //字节数递减
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if(NumByteToWrite>4096)secremain=4096; //下一个扇区还是写不完
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else secremain=NumByteToWrite; //下一个扇区可以写完了
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}
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}
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}
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//擦除整个芯片
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//等待时间超长...
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void W25QXX_Erase_Chip(void)
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{
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W25QXX_Write_Enable(); //SET WEL
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W25QXX_Wait_Busy();
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QSPI_Send_CMD(W25Qx_CMD_ChipErase,0,0,QSPI_INSTRUCTION_1_LINE,QSPI_ADDRESS_NONE,QSPI_ADDRESS_8_BITS,QSPI_DATA_NONE);
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HAL_Delay(100);
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W25QXX_Wait_Busy();
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}
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void W25QXX_Erase_Chip_no_wait(void)
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{
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W25QXX_Write_Enable(); //SET WEL
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W25QXX_Wait_Busy();
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QSPI_Send_CMD(W25Qx_CMD_ChipErase,0,0,QSPI_INSTRUCTION_1_LINE,QSPI_ADDRESS_NONE,QSPI_ADDRESS_8_BITS,QSPI_DATA_NONE);
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__nop();
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}
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//擦除一个扇区
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//Dst_Addr:扇区地址 根据实际容量设置
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//擦除一个扇区的最少时间:150ms
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void W25QXX_Erase_Sector(unsigned int addr)
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{
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unsigned int addr_sector = addr & 0x00FFF000;
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W25QXX_Write_Enable(); //SET WEL
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W25QXX_Wait_Busy();
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QSPI_Send_CMD(W25Qx_CMD_SectorErase_4K,addr_sector,0,QSPI_INSTRUCTION_1_LINE,QSPI_ADDRESS_1_LINE,QSPI_ADDRESS_24_BITS,QSPI_DATA_NONE);
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HAL_Delay(5);
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W25QXX_Wait_Busy();
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}
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void W25QXX_Erase_Sector_4k_no_wait(unsigned int addr)
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{
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unsigned int addr_sector = addr & 0x00FFF000;
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W25QXX_Write_Enable(); //SET WEL
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W25QXX_Wait_Busy();
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QSPI_Send_CMD(W25Qx_CMD_SectorErase_4K,addr_sector,0,QSPI_INSTRUCTION_1_LINE,QSPI_ADDRESS_1_LINE,QSPI_ADDRESS_24_BITS,QSPI_DATA_NONE);
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__nop();
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}
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void W25QXX_Erase_Sector_32k_no_wait(unsigned int addr)
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{
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unsigned int addr_sector = addr & 0x00FF8000;
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W25QXX_Write_Enable(); //SET WEL
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W25QXX_Wait_Busy();
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QSPI_Send_CMD(W25Qx_CMD_SectorErase_32K,addr_sector,0,QSPI_INSTRUCTION_1_LINE,QSPI_ADDRESS_1_LINE,QSPI_ADDRESS_24_BITS,QSPI_DATA_NONE);
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__nop();
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}
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void W25QXX_Erase_Sector_64k_no_wait(unsigned int addr)
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{
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unsigned int addr_sector = addr & 0x00FF0000;
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W25QXX_Write_Enable(); //SET WEL
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W25QXX_Wait_Busy();
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QSPI_Send_CMD(W25Qx_CMD_SectorErase_64K,addr_sector,0,QSPI_INSTRUCTION_1_LINE,QSPI_ADDRESS_1_LINE,QSPI_ADDRESS_24_BITS,QSPI_DATA_NONE);
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__nop();
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}
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//等待空闲
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void W25QXX_Wait_Busy(void)
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{
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while((W25QXX_ReadSR(1)&0x01)==0x01){
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LL_IWDG_ReloadCounter(IWDG1); // 等待BUSY位清空
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norflash_get_busy_flag[GET_CHIP_SELECT()] = 1;
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if(norflash_err_flag[GET_CHIP_SELECT()])return;
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wait();
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}
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norflash_get_busy_flag[GET_CHIP_SELECT()] = 0;
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}
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void W25QXX_Reset(void)
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{
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QSPI_Send_CMD(W25Qx_CMD_Reset_Enble,0,0,QSPI_INSTRUCTION_1_LINE,QSPI_ADDRESS_NONE,QSPI_ADDRESS_8_BITS,QSPI_DATA_NONE);
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QSPI_Send_CMD(W25Qx_CMD_Reset_Memory,0,0,QSPI_INSTRUCTION_1_LINE,QSPI_ADDRESS_NONE,QSPI_ADDRESS_8_BITS,QSPI_DATA_NONE);
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}
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