387 lines
12 KiB
C
387 lines
12 KiB
C
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/**
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* @file w25qxx.c
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*
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* @brief Create by AnKun on 2020/6/18
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*
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*/
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#include "w25qxx.h"
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#include "spi.h"
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uint16_t W25QXX_TYPE = 0;
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uint32_t W25QXX_SIZE = 0;
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uint8_t W25QXX_UID[8];
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static void delay_us(uint32_t us)
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{
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uint32_t delay = (HAL_RCC_GetHCLKFreq() / 4000000 * us);
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while (delay--)
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{
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;
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}
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}
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//SPI读写一个字节
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//TxData:要写入的字节
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//返回值:读取到的字节
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static uint8_t W25QXX_SPI_ReadWriteByte(uint8_t TxData)
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{
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uint8_t RxData = 0X00;
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if(HAL_SPI_TransmitReceive(W25QXX_SPI_Handle, &TxData, &RxData, 1, 10) != HAL_OK)
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{
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RxData = 0XFF;
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}
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return RxData;
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}
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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128个Block,4096个Sector
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//初始化SPI FLASH的IO口
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int W25QXX_Init(void)
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{
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MX_SPI1_Init();
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W25QXX_CS_L(); /* 拉低选中 */
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W25QXX_SPI_ReadWriteByte(0XFF);
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W25QXX_CS_H(); /* 拉高取消 */
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W25QXX_TYPE = W25QXX_ReadID(); // 读取FLASH ID.
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W25QXX_SIZE = W25QXX_ReadCapacity(); // 读取容量
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W25QXX_ReadUniqueID(W25QXX_UID); // 读取唯一ID
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if((W25QXX_TYPE & 0XEF00) != 0XEF00)
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{
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return -1;
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}
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return 0;
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}
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//读取W25QXX的状态寄存器
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//BIT7 6 5 4 3 2 1 0
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//SPR RV TB BP2 BP1 BP0 WEL BUSY
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//SPR:默认0,状态寄存器保护位,配合WP使用
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//TB,BP2,BP1,BP0:FLASH区域写保护设置
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//WEL:写使能锁定
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//BUSY:忙标记位(1,忙;0,空闲)
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//默认:0x00
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uint8_t W25QXX_ReadSR(void)
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{
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uint8_t byte = 0;
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W25QXX_CS_L(); //使能器件
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W25QXX_SPI_ReadWriteByte(W25X_ReadStatusReg); //发送读取状态寄存器命令
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byte = W25QXX_SPI_ReadWriteByte(0Xff); //读取一个字节
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W25QXX_CS_H(); //取消片选
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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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//只有SPR,TB,BP2,BP1,BP0(bit 7,5,4,3,2)可以写!!!
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void W25QXX_Write_SR(uint8_t sr)
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{
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W25QXX_CS_L(); //使能器件
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W25QXX_SPI_ReadWriteByte(W25X_WriteStatusReg); //发送写取状态寄存器命令
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W25QXX_SPI_ReadWriteByte(sr); //写入一个字节
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W25QXX_CS_H(); //取消片选
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}
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//W25QXX写使能
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//将WEL置位
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void W25QXX_Write_Enable(void)
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{
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W25QXX_CS_L(); //使能器件
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W25QXX_SPI_ReadWriteByte(W25X_WriteEnable); //发送写使能
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W25QXX_CS_H(); //取消片选
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}
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//W25QXX写禁止
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//将WEL清零
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void W25QXX_Write_Disable(void)
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{
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W25QXX_CS_L(); //使能器件
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W25QXX_SPI_ReadWriteByte(W25X_WriteDisable); //发送写禁止指令
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W25QXX_CS_H(); //取消片选
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}
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//读取芯片ID
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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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uint16_t W25QXX_ReadID(void)
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{
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uint16_t Temp = 0;
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W25QXX_CS_L();
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W25QXX_SPI_ReadWriteByte(0x90); //发送读取ID命令
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W25QXX_SPI_ReadWriteByte(0x00);
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W25QXX_SPI_ReadWriteByte(0x00);
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W25QXX_SPI_ReadWriteByte(0x00);
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Temp |= W25QXX_SPI_ReadWriteByte(0xFF) << 8;
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Temp |= W25QXX_SPI_ReadWriteByte(0xFF);
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W25QXX_CS_H();
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return Temp;
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}
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uint32_t W25QXX_ReadCapacity(void)
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{
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int i = 0;
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uint8_t arr[4] = {0,0,0,0};
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W25QXX_CS_L();
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W25QXX_SPI_ReadWriteByte(0x5A);
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W25QXX_SPI_ReadWriteByte(0x00);
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W25QXX_SPI_ReadWriteByte(0x00);
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W25QXX_SPI_ReadWriteByte(0x84);
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W25QXX_SPI_ReadWriteByte(0x00);
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for(i = 0; i < sizeof(arr); i++)
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{
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arr[i] = W25QXX_SPI_ReadWriteByte(0xFF);
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}
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W25QXX_CS_H();
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return ((((*(uint32_t *)arr)) + 1) >> 3);
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}
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void W25QXX_ReadUniqueID(uint8_t UID[8])
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{
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int i = 0;
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W25QXX_CS_L();
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W25QXX_SPI_ReadWriteByte(0x4B);
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W25QXX_SPI_ReadWriteByte(0x00);
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W25QXX_SPI_ReadWriteByte(0x00);
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W25QXX_SPI_ReadWriteByte(0x00);
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W25QXX_SPI_ReadWriteByte(0x00);
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for(i = 0; i < 8; i++)
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{
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UID[i] = W25QXX_SPI_ReadWriteByte(0xFF);
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}
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W25QXX_CS_H();
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}
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//读取SPI FLASH
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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(24bit)
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//NumByteToRead:要读取的字节数(最大65535)
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void W25QXX_Read(uint8_t *pBuffer, uint32_t ReadAddr, uint16_t NumByteToRead)
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{
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volatile static int timeReadTemp1, timeReadTemp2, timeReadTemp3, timeReadTemp4, timeReadTemp5;
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timeReadTemp1 = HAL_GetTick();
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uint16_t i;
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W25QXX_CS_L(); //使能器件
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W25QXX_SPI_ReadWriteByte(W25X_ReadData); //发送读取命令
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W25QXX_SPI_ReadWriteByte((uint8_t)((ReadAddr) >> 16)); //发送24bit地址
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W25QXX_SPI_ReadWriteByte((uint8_t)((ReadAddr) >> 8));
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W25QXX_SPI_ReadWriteByte((uint8_t)ReadAddr);
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timeReadTemp2 = HAL_GetTick();
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for (i = 0; i < NumByteToRead; i++)
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{
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pBuffer[i] = W25QXX_SPI_ReadWriteByte(0XFF); //循环读数
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}
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W25QXX_CS_H();
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timeReadTemp3 = HAL_GetTick();
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timeReadTemp4 = NumByteToRead;
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timeReadTemp5 = ReadAddr;
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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(24bit)
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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(uint8_t *pBuffer, uint32_t WriteAddr, uint16_t NumByteToWrite)
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{
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uint16_t i;
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W25QXX_Write_Enable(); //SET WEL
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W25QXX_CS_L(); //使能器件
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W25QXX_SPI_ReadWriteByte(W25X_PageProgram); //发送写页命令
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W25QXX_SPI_ReadWriteByte((uint8_t)((WriteAddr) >> 16)); //发送24bit地址
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W25QXX_SPI_ReadWriteByte((uint8_t)((WriteAddr) >> 8));
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W25QXX_SPI_ReadWriteByte((uint8_t)WriteAddr);
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for (i = 0; i < NumByteToWrite; i++)
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W25QXX_SPI_ReadWriteByte(pBuffer[i]); //循环写数
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W25QXX_CS_H(); //取消片选
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W25QXX_Wait_Busy(); //等待写入结束
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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(24bit)
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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(uint8_t *pBuffer, uint32_t WriteAddr, uint16_t NumByteToWrite)
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{
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uint16_t pageremain;
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pageremain = 256 - WriteAddr % 256; //单页剩余的字节数
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if (NumByteToWrite <= pageremain)
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pageremain = NumByteToWrite; //不大于256个字节
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while (1)
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{
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W25QXX_Write_Page(pBuffer, WriteAddr, pageremain);
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if (NumByteToWrite == pageremain)
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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)
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pageremain = 256; //一次可以写入256个字节
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else
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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(24bit)
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//NumByteToWrite:要写入的字节数(最大65535)
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uint8_t W25QXX_BUFFER[4096];
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void W25QXX_Write(uint8_t *pBuffer, uint32_t WriteAddr, uint16_t NumByteToWrite)
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{
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// volatile static int timeReadTemp1, timeReadTemp2, timeReadTemp3, timeReadTemp4, timeReadTemp5, timeReadTemp6;
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uint32_t secpos;
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uint16_t secoff;
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uint16_t secremain;
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uint16_t i;
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uint8_t *W25QXX_BUF;
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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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if (NumByteToWrite <= secremain)
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secremain = NumByteToWrite; //不大于4096个字节
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while (1)
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{
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// timeReadTemp1 = HAL_GetTick();
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W25QXX_Read(W25QXX_BUF, secpos * 4096, 4096); //读出整个扇区的内容
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// timeReadTemp2 = HAL_GetTick();
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for (i = 0; i < secremain; i++) //校验数据
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{
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if (W25QXX_BUF[secoff + i] != 0XFF)
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break; //需要擦除
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}
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if (i < secremain) //需要擦除
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{
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W25QXX_Erase_Sector(secpos); //擦除这个扇区
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// timeReadTemp3 = HAL_GetTick();
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for (i = 0; i < secremain; i++) //复制
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{
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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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// timeReadTemp4 = HAL_GetTick();
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// timeReadTemp5 = NumByteToWrite;
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// timeReadTemp6 = WriteAddr;
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}
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else
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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)
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break; //写入结束了
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else //写入未结束
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{
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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)
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secremain = 4096; //下一个扇区还是写不完
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else
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secremain = NumByteToWrite; //下一个扇区可以写完了
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}
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};
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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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// // {
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// // if (W25QXX_BUF[secoff + i] != 0XFF)
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// // break; //需要擦除
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// // }
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// // if (i < secremain) //需要擦除
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// // {
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// W25QXX_Erase_Sector(secpos); //擦除这个扇区
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// for (i = 0; i < secremain; i++) //复制
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// {
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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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// // }
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// // else
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// // 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)
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// break; //写入结束了
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// else //写入未结束
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// {
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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)
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// secremain = 4096; //下一个扇区还是写不完
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// else
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// 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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W25QXX_CS_L(); //使能器件
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W25QXX_SPI_ReadWriteByte(W25X_ChipErase); //发送片擦除命令
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W25QXX_CS_H(); //取消片选
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W25QXX_Wait_Busy(); //等待芯片擦除结束
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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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//擦除一个山区的最少时间:150ms
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void W25QXX_Erase_Sector(uint32_t Dst_Addr)
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{
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//监视falsh擦除情况,测试用
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Dst_Addr *= 4096;
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W25QXX_Write_Enable(); //SET WEL
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W25QXX_Wait_Busy();
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W25QXX_CS_L(); //使能器件
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W25QXX_SPI_ReadWriteByte(W25X_SectorErase); //发送扇区擦除指令
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W25QXX_SPI_ReadWriteByte((uint8_t)((Dst_Addr) >> 16)); //发送24bit地址
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W25QXX_SPI_ReadWriteByte((uint8_t)((Dst_Addr) >> 8));
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W25QXX_SPI_ReadWriteByte((uint8_t)Dst_Addr);
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W25QXX_CS_H(); //取消片选
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W25QXX_Wait_Busy(); //等待擦除完成
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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() & 0x01) == 0x01); // 等待BUSY位清空
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}
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//进入掉电模式
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void W25QXX_PowerDown(void)
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{
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W25QXX_CS_L(); //使能器件
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W25QXX_SPI_ReadWriteByte(W25X_PowerDown); //发送掉电命令
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W25QXX_CS_H(); //取消片选
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delay_us(3); //等待TPD
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}
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//唤醒
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void W25QXX_WAKEUP(void)
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{
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W25QXX_CS_L(); //使能器件
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W25QXX_SPI_ReadWriteByte(W25X_ReleasePowerDown); // send W25X_PowerDown command 0xAB
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W25QXX_CS_H(); //取消片选
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delay_us(3); //等待TRES1
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}
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