ESP32-SPI-Arduino/src/W25QXXArduino/w25qxx.cpp

#include "w25qxx.h"
uint16_t W25QXX_TYPE = 0XFFFF;	//Ĭ<><C4AC><EFBFBD><EFBFBD>W25Q128

//4KbytesΪһ<CEAA><D2BB>Sector
//16<31><36><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ1<CEAA><31>Block
//W25Q128
//<2F><><EFBFBD><EFBFBD>Ϊ16M<36>ֽ<EFBFBD>,<2C><><EFBFBD><EFBFBD>256<35><36>Block,4096<39><36>Sector
static void delayus(uint32_t nus){
    volatile uint32_t i;
    while (nus-- > 0){
      i = 26;
      while (i-- > 0);
    }
}

void SPI1S_Init(void){
        // gpio init
    // pinMode(NORFLASH_HOLD_PIN, OUTPUT); 
    // pinMode(NORFLASH_WP_PIN, OUTPUT);
    // digitalWrite(NORFLASH_HOLD_PIN, HIGH);  //<2F><><EFBFBD><EFBFBD>
    // digitalWrite(NORFLASH_WP_PIN, HIGH);   //д<><D0B4><EFBFBD><EFBFBD>
#ifdef HARDWARE_SPI
    //ʹ<><CAB9>Ӳ<EFBFBD><D3B2>SPI
    SPI.begin(NORFLASH_CLK_PIN, NORFLASH_MISO_PIN, NORFLASH_MOSI_PIN, NORFLASH_CS_PIN);
    SPI.setDataMode(SPI_MODE0);
    SPI.setBitOrder(MSBFIRST);
    SPI.setFrequency(SPI_FREQUENCY);
    // SPI.setFrequency(1000000*20);
    pinMode(NORFLASH_CS_PIN, OUTPUT);
#endif
#ifdef SOFTWARE_SPI
    //ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģ<EFBFBD><C4A3>SPI
    pinMode(NORFLASH_CLK_PIN, OUTPUT);
    pinMode(NORFLASH_MOSI_PIN, OUTPUT);
    pinMode(NORFLASH_MISO_PIN, INPUT);
    pinMode(NORFLASH_CS_PIN, OUTPUT);

    digitalWrite(NORFLASH_CS_PIN,HIGH);
    digitalWrite(NORFLASH_CLK_PIN,LOW);
    delay(1);
#endif
#ifdef FLASH_TEST_ENABLE
    /* readwrite test */
    int g = 0;
    uint8_t str[1280];
    memset(str, 0, sizeof(str));
    unsigned int  j = 0;       
    for(int k=0; k < 5; k++)
    {
      for(int i = 0; i < 256; i++)
      {
        str[j] = i;
        j++;
      }
    }
    Serial.println("");
    Serial.println("-----write data-------");
    W25QXX_CS0;
    W25QXX_Erase_Sector(0x00);
    W25QXX_Write(str,0x10,256);
    memset(str, 0, sizeof(str));
    W25QXX_Read(str,0x00,512);
    W25QXX_CS1;
    Serial.println("str:");
    for(int k = 0; k < 512; k++) {
      if(g == 16){
            Serial.println("|");
            if(k % 256 == 0) Serial.println("---------------");
            {
              g = 1;
            }
        }   
        else {
          g++;
        }
        Serial.printf("%02X ", str[k]);
    }
#endif
}

//SPI1 <20><>дһ<D0B4><D2BB><EFBFBD>ֽ<EFBFBD>
//TxData:Ҫд<D2AA><D0B4><EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD>
//<2F><><EFBFBD><EFBFBD>ֵ:<3A><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD>
uint8_t SPI1_ReadWriteByte(uint8_t TxData)
{
    uint8_t Rxdata;
#ifdef HARDWARE_SPI
    Rxdata = SPI.transfer(TxData);
    return Rxdata;
#endif
#ifdef SOFTWARE_SPI
    uint8_t i = 0, Rxdata = 0;
    for(i = 0; i < 8; i++)
    {
        digitalWrite(NORFLASH_CLK_PIN, HIGH);
        digitalWrite(NORFLASH_CLK_PIN, LOW);
        if(digitalRead(NORFLASH_MISO_PIN)) 
        {
            Rxdata |= 0x80 >> i;
        }
    }
    return Rxdata;
#endif
    return Rxdata;          		    //<2F><><EFBFBD><EFBFBD><EFBFBD>յ<EFBFBD><D5B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
}

//<2F><>ʼ<EFBFBD><CABC>SPI FLASH<53><48>IO<49><4F>
void W25QXX_Init(void)
{
	SPI1S_Init();		   			        //<2F><>ʼ<EFBFBD><CABC>SPI
  W25QXX_TYPE = W25QXX_ReadID();	        //<2F><>ȡFLASH ID.
}

//<2F><>ȡW25QXX<58><58>״̬<D7B4>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD><EFBFBD>W25QXXһ<58><D2BB><EFBFBD><EFBFBD>3<EFBFBD><33>״̬<D7B4>Ĵ<EFBFBD><C4B4><EFBFBD>
//״̬<D7B4>Ĵ<EFBFBD><C4B4><EFBFBD>1<EFBFBD><31>
//BIT7  6   5   4   3   2   1   0
//SPR   RV  TB BP2 BP1 BP0 WEL BUSY
//SPR:Ĭ<><C4AC>0,״̬<D7B4>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ,<2C><><EFBFBD><EFBFBD>WPʹ<50><CAB9>
//TB,BP2,BP1,BP0:FLASH<53><48><EFBFBD><EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
//WEL:дʹ<D0B4><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
//BUSY:æ<><C3A6><EFBFBD><EFBFBD>λ(1,æ;0,<2C><><EFBFBD><EFBFBD>)
//Ĭ<><C4AC>:0x00
//״̬<D7B4>Ĵ<EFBFBD><C4B4><EFBFBD>2<EFBFBD><32>
//BIT7  6   5   4   3   2   1   0
//SUS   CMP LB3 LB2 LB1 (R) QE  SRP1
//״̬<D7B4>Ĵ<EFBFBD><C4B4><EFBFBD>3<EFBFBD><33>
//BIT7      6    5    4   3   2   1   0
//HOLD/RST  DRV1 DRV0 (R) (R) WPS ADP ADS
//regno:״̬<D7B4>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD>ţ<EFBFBD><C5A3><EFBFBD>:1~3
//<2F><><EFBFBD><EFBFBD>ֵ:״̬<D7B4>Ĵ<EFBFBD><C4B4><EFBFBD>ֵ
uint8_t W25QXX_ReadSR(uint8_t regno)
{
    uint8_t byte=0,command=0;
    switch(regno)
    {
        case 1:
            command = W25X_ReadStatusReg1;    //<2F><>״̬<D7B4>Ĵ<EFBFBD><C4B4><EFBFBD>1ָ<31><D6B8>
            break;
        case 2:
            command = W25X_ReadStatusReg2;    //<2F><>״̬<D7B4>Ĵ<EFBFBD><C4B4><EFBFBD>2ָ<32><D6B8>
            break;
        case 3:
            command = W25X_ReadStatusReg3;    //<2F><>״̬<D7B4>Ĵ<EFBFBD><C4B4><EFBFBD>3ָ<33><D6B8>
            break;
        default:
            command = W25X_ReadStatusReg1;
            break;
    }
    W25QXX_CS0;                            //ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    SPI1_ReadWriteByte(command);            //<2F><><EFBFBD>Ͷ<EFBFBD>ȡ״̬<D7B4>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    byte=SPI1_ReadWriteByte(0Xff);          //<2F><>ȡһ<C8A1><D2BB><EFBFBD>ֽ<EFBFBD>
    W25QXX_CS1;                            //ȡ<><C8A1>Ƭѡ
    return byte;
}
//дW25QXX״̬<D7B4>Ĵ<EFBFBD><C4B4><EFBFBD>
void W25QXX_Write_SR(uint8_t regno,uint8_t sr)
{
    uint8_t command=0;
    switch(regno)
    {
        case 1:
            command=W25X_WriteStatusReg1;    //д״̬<D7B4>Ĵ<EFBFBD><C4B4><EFBFBD>1ָ<31><D6B8>
            break;
        case 2:
            command=W25X_WriteStatusReg2;    //д״̬<D7B4>Ĵ<EFBFBD><C4B4><EFBFBD>2ָ<32><D6B8>
            break;
        case 3:
            command=W25X_WriteStatusReg3;    //д״̬<D7B4>Ĵ<EFBFBD><C4B4><EFBFBD>3ָ<33><D6B8>
            break;
        default:
            command=W25X_WriteStatusReg1;
            break;
    }
    W25QXX_CS0;                            //ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    SPI1_ReadWriteByte(command);            //<2F><><EFBFBD><EFBFBD>дȡ״̬<D7B4>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    SPI1_ReadWriteByte(sr);                 //д<><D0B4>һ<EFBFBD><D2BB><EFBFBD>ֽ<EFBFBD>
    W25QXX_CS1;                            //ȡ<><C8A1>Ƭѡ
}
//W25QXXдʹ<D0B4><CAB9>
//<2F><>WEL<45><4C>λ
void W25QXX_Write_Enable(void)
{
    W25QXX_CS0;                            //ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    SPI1_ReadWriteByte(W25X_WriteEnable);   //<2F><><EFBFBD><EFBFBD>дʹ<D0B4><CAB9>
    W25QXX_CS1;                            //ȡ<><C8A1>Ƭѡ
}
//W25QXXд<58><D0B4>ֹ
//<2F><>WEL<45><4C><EFBFBD><EFBFBD>
void W25QXX_Write_Disable(void)
{
  W25QXX_CS0;                            //ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  SPI1_ReadWriteByte(W25X_WriteDisable);  //<2F><><EFBFBD><EFBFBD>д<EFBFBD><D0B4>ָֹ<D6B9><D6B8>
  W25QXX_CS1;                            //ȡ<><C8A1>Ƭѡ
}

//<2F><>ȡоƬID
//<2F><><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD>:
//0XEF13,<2C><>ʾоƬ<D0BE>ͺ<EFBFBD>ΪW25Q80
//0XEF14,<2C><>ʾоƬ<D0BE>ͺ<EFBFBD>ΪW25Q16
//0XEF15,<2C><>ʾоƬ<D0BE>ͺ<EFBFBD>ΪW25Q32
//0XEF16,<2C><>ʾоƬ<D0BE>ͺ<EFBFBD>ΪW25Q64
//0XEF17,<2C><>ʾоƬ<D0BE>ͺ<EFBFBD>ΪW25Q128
//0XEF18,<2C><>ʾоƬ<D0BE>ͺ<EFBFBD>ΪW25Q256
uint16_t W25QXX_ReadID(void)
{
    uint16_t Temp = 0;
    W25QXX_CS0;
    SPI1_ReadWriteByte(0x90);//<2F><><EFBFBD>Ͷ<EFBFBD>ȡID<49><44><EFBFBD><EFBFBD>
    SPI1_ReadWriteByte(0x00);
    SPI1_ReadWriteByte(0x00);
    SPI1_ReadWriteByte(0x00);
    Temp|=SPI1_ReadWriteByte(0xFF)<<8;
    Temp|=SPI1_ReadWriteByte(0xFF);
    W25QXX_CS1;
    return Temp;
}
//<2F><>ȡSPI FLASH
//<2F><>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7>ʼ<EFBFBD><CABC>ȡָ<C8A1><D6B8><EFBFBD><EFBFBD><EFBFBD>ȵ<EFBFBD><C8B5><EFBFBD><EFBFBD><EFBFBD>
//pBuffer:<3A><><EFBFBD>ݴ洢<DDB4><E6B4A2>
//ReadAddr:<3A><>ʼ<EFBFBD><CABC>ȡ<EFBFBD>ĵ<EFBFBD>ַ(24bit)
//NumByteToRead:Ҫ<><D2AA>ȡ<EFBFBD><C8A1><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD>(<28><><EFBFBD><EFBFBD>65535)
void W25QXX_Read(uint8_t* pBuffer,uint32_t ReadAddr,uint16_t NumByteToRead)
{
    uint16_t i;
    W25QXX_CS0;                            //ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    SPI1_ReadWriteByte(W25X_ReadData);      //<2F><><EFBFBD>Ͷ<EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD>
    if(W25QXX_TYPE==W25Q256)                //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>W25Q256<35>Ļ<EFBFBD><C4BB><EFBFBD>ַΪ4<CEAA>ֽڵģ<DAB5>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>8λ
    {
        SPI1_ReadWriteByte((uint8_t)((ReadAddr)>>24));
    }
    SPI1_ReadWriteByte((uint8_t)((ReadAddr)>>16));   //<2F><><EFBFBD><EFBFBD>24bit<69><74>ַ
    SPI1_ReadWriteByte((uint8_t)((ReadAddr)>>8));
    SPI1_ReadWriteByte((uint8_t)ReadAddr);
    for(i=0; i<NumByteToRead; i++)
    {
        pBuffer[i]=SPI1_ReadWriteByte(0XFF);    //ѭ<><D1AD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    }
    W25QXX_CS1;
}
//SPI<50><49>һҳ(0~65535)<29><>д<EFBFBD><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>256<35><36><EFBFBD>ֽڵ<D6BD><DAB5><EFBFBD><EFBFBD><EFBFBD>
//<2F><>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7>ʼд<CABC><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>256<35>ֽڵ<D6BD><DAB5><EFBFBD><EFBFBD><EFBFBD>
//pBuffer:<3A><><EFBFBD>ݴ洢<DDB4><E6B4A2>
//WriteAddr:<3A><>ʼд<CABC><D0B4><EFBFBD>ĵ<EFBFBD>ַ(24bit)
//NumByteToWrite:Ҫд<D2AA><D0B4><EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD>(<28><><EFBFBD><EFBFBD>256),<2C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD>ó<EFBFBD><C3B3><EFBFBD><EFBFBD><EFBFBD>ҳ<EFBFBD><D2B3>ʣ<EFBFBD><CAA3><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD>!!!
void W25QXX_Write_Page(uint8_t* pBuffer,uint32_t WriteAddr,uint16_t NumByteToWrite)
{
    uint16_t i;
    W25QXX_Write_Enable();                  //SET WEL
    W25QXX_CS0;                            //ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    SPI1_ReadWriteByte(W25X_PageProgram);   //<2F><><EFBFBD><EFBFBD>дҳ<D0B4><D2B3><EFBFBD><EFBFBD>
    if(W25QXX_TYPE==W25Q256)                //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>W25Q256<35>Ļ<EFBFBD><C4BB><EFBFBD>ַΪ4<CEAA>ֽڵģ<DAB5>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>8λ
    {
        SPI1_ReadWriteByte((uint8_t)((WriteAddr)>>24));
    }
    SPI1_ReadWriteByte((uint8_t)((WriteAddr)>>16)); //<2F><><EFBFBD><EFBFBD>24bit<69><74>ַ
    SPI1_ReadWriteByte((uint8_t)((WriteAddr)>>8));
    SPI1_ReadWriteByte((uint8_t)WriteAddr);
    for(i=0; i<NumByteToWrite; i++)SPI1_ReadWriteByte(pBuffer[i]); //ѭ<><D1AD>д<EFBFBD><D0B4>
    W25QXX_CS1;                            //ȡ<><C8A1>Ƭѡ
    W25QXX_Wait_Busy();					   //<2F>ȴ<EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
}
//<2F>޼<EFBFBD><DEBC><EFBFBD>дSPI FLASH
//<2F><><EFBFBD><EFBFBD>ȷ<EFBFBD><C8B7><EFBFBD><EFBFBD>д<EFBFBD>ĵ<EFBFBD>ַ<EFBFBD><D6B7>Χ<EFBFBD>ڵ<EFBFBD><DAB5><EFBFBD><EFBFBD><EFBFBD>ȫ<EFBFBD><C8AB>Ϊ0XFF,<2C><><EFBFBD><EFBFBD><EFBFBD>ڷ<EFBFBD>0XFF<46><46>д<EFBFBD><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݽ<EFBFBD>ʧ<EFBFBD><CAA7>!
//<2F><><EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD><D4B6><EFBFBD>ҳ<EFBFBD><D2B3><EFBFBD><EFBFBD>
//<2F><>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7>ʼд<CABC><D0B4>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD><EFBFBD>ȵ<EFBFBD><C8B5><EFBFBD><EFBFBD><EFBFBD>,<2C><><EFBFBD><EFBFBD>Ҫȷ<D2AA><C8B7><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7>Խ<EFBFBD><D4BD>!
//pBuffer:<3A><><EFBFBD>ݴ洢<DDB4><E6B4A2>
//WriteAddr:<3A><>ʼд<CABC><D0B4><EFBFBD>ĵ<EFBFBD>ַ(24bit)
//NumByteToWrite:Ҫд<D2AA><D0B4><EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD>(<28><><EFBFBD><EFBFBD>65535)
//CHECK OK
void W25QXX_Write_NoCheck(uint8_t* pBuffer,uint32_t WriteAddr,uint16_t NumByteToWrite)
{
    uint16_t pageremain;
    pageremain=256-WriteAddr%256; //<2F><>ҳʣ<D2B3><CAA3><EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD>
    if(NumByteToWrite<=pageremain)pageremain=NumByteToWrite;//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>256<35><36><EFBFBD>ֽ<EFBFBD>
    while(1)
    {
        W25QXX_Write_Page(pBuffer,WriteAddr,pageremain);
        if(NumByteToWrite==pageremain)break;//д<><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
        else //NumByteToWrite>pageremain
        {
            pBuffer+=pageremain;
            WriteAddr+=pageremain;

            NumByteToWrite-=pageremain;			  //<2F><>ȥ<EFBFBD>Ѿ<EFBFBD>д<EFBFBD><D0B4><EFBFBD>˵<EFBFBD><CBB5>ֽ<EFBFBD><D6BD><EFBFBD>
            if(NumByteToWrite>256)pageremain=256; //һ<>ο<EFBFBD><CEBF><EFBFBD>д<EFBFBD><D0B4>256<35><36><EFBFBD>ֽ<EFBFBD>
            else pageremain=NumByteToWrite; 	  //<2F><><EFBFBD><EFBFBD>256<35><36><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD>
        }
    };
}
//дSPI FLASH
//<2F><>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7>ʼд<CABC><D0B4>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD><EFBFBD>ȵ<EFBFBD><C8B5><EFBFBD><EFBFBD><EFBFBD>
//<2F>ú<EFBFBD><C3BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>!
//pBuffer:<3A><><EFBFBD>ݴ洢<DDB4><E6B4A2>
//WriteAddr:<3A><>ʼд<CABC><D0B4><EFBFBD>ĵ<EFBFBD>ַ(24bit)
//NumByteToWrite:Ҫд<D2AA><D0B4><EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD>(<28><><EFBFBD><EFBFBD>65535)
uint8_t W25QXX_BUFFER[4096];
void W25QXX_Write(uint8_t* pBuffer,uint32_t WriteAddr,uint32_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;//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ
    secoff=WriteAddr%4096;//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڵ<EFBFBD>ƫ<EFBFBD><C6AB>
    secremain=4096-secoff;//<2F><><EFBFBD><EFBFBD>ʣ<EFBFBD><CAA3><EFBFBD>ռ<EFBFBD><D5BC><EFBFBD>С
// 	printf("ad:%X,nb:%X\r\n",WriteAddr,NumByteToWrite);//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    if(NumByteToWrite <= secremain) secremain = NumByteToWrite;    //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʣ<EFBFBD><CAA3><EFBFBD>ռ<EFBFBD><D5BC><EFBFBD>С
    while(1)
    {
        W25QXX_Read(W25QXX_BUF,secpos*4096,4096);//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
        for(i=0; i<secremain; i++) //У<><D0A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
        {
            if(W25QXX_BUF[secoff+i]!=0XFF) break;//<2F><>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>
        }
        if(i<secremain)//<2F><>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>
        {
            W25QXX_Erase_Sector(secpos);//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
            for(i=0; i<secremain; i++)	 //<2F><><EFBFBD><EFBFBD>
            {
                W25QXX_BUF[i+secoff]=pBuffer[i];
            }
            W25QXX_Write_NoCheck(W25QXX_BUF,secpos*4096,4096);//д<><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

        }
        else W25QXX_Write_NoCheck(pBuffer,WriteAddr,secremain); //д<>Ѿ<EFBFBD><D1BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD>,ֱ<><D6B1>д<EFBFBD><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʣ<EFBFBD><CAA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>.
        if(NumByteToWrite==secremain) break;//д<><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
        else//д<><D0B4>δ<EFBFBD><CEB4><EFBFBD><EFBFBD>
        {
            secpos++;//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7>1
            secoff=0;//ƫ<><C6AB>λ<EFBFBD><CEBB>Ϊ0

            pBuffer+=secremain;  //ָ<><D6B8>ƫ<EFBFBD><C6AB>
            WriteAddr+=secremain;//д<><D0B4>ַƫ<D6B7><C6AB>
            NumByteToWrite-=secremain;				//<2F>ֽ<EFBFBD><D6BD><EFBFBD><EFBFBD>ݼ<EFBFBD>
            if(NumByteToWrite>4096)secremain=4096;	//<2F><>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD>
            else secremain=NumByteToWrite;			//<2F><>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD>
        }
    };
}
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>оƬ
//<2F>ȴ<EFBFBD>ʱ<EFBFBD>䳬<EFBFBD><E4B3AC>...
void W25QXX_Erase_Chip(void)
{
    W25QXX_Write_Enable();                  //SET WEL
    W25QXX_Wait_Busy();
    W25QXX_CS0;                            //ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    SPI1_ReadWriteByte(W25X_ChipErase);        //<2F><><EFBFBD><EFBFBD>Ƭ<EFBFBD><C6AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    W25QXX_CS1;                            //ȡ<><C8A1>Ƭѡ
    W25QXX_Wait_Busy();   				   //<2F>ȴ<EFBFBD>оƬ<D0BE><C6AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
}
//<2F><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
//Dst_Addr:<3A><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ <20><><EFBFBD><EFBFBD>ʵ<EFBFBD><CAB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
//<2F><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1>:150ms
void W25QXX_Erase_Sector(uint32_t Dst_Addr)
{
    //<2F><><EFBFBD><EFBFBD>falsh<73><68><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,<2C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    //printf("fe:%x\r\n",Dst_Addr);
    Dst_Addr*=4096;
    W25QXX_Write_Enable();                  //SET WEL
    W25QXX_Wait_Busy();
    W25QXX_CS0;                            //ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    SPI1_ReadWriteByte(W25X_SectorErase);   //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8>
    if(W25QXX_TYPE==W25Q256)                //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>W25Q256<35>Ļ<EFBFBD><C4BB><EFBFBD>ַΪ4<CEAA>ֽڵģ<DAB5>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>8λ
    {
        SPI1_ReadWriteByte((uint8_t)((Dst_Addr)>>24));
    }
    SPI1_ReadWriteByte((uint8_t)((Dst_Addr)>>16));  //<2F><><EFBFBD><EFBFBD>24bit<69><74>ַ
    SPI1_ReadWriteByte((uint8_t)((Dst_Addr)>>8));
    SPI1_ReadWriteByte((uint8_t)Dst_Addr);
    W25QXX_CS1;                            //ȡ<><C8A1>Ƭѡ
    W25QXX_Wait_Busy();   				    //<2F>ȴ<EFBFBD><C8B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
}
//<2F>ȴ<EFBFBD><C8B4><EFBFBD><EFBFBD><EFBFBD>
void W25QXX_Wait_Busy(void)
{
    while((W25QXX_ReadSR(1)&0x01)==0x01);   // <20>ȴ<EFBFBD>BUSYλ<59><CEBB><EFBFBD><EFBFBD>
}
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģʽ
void W25QXX_PowerDown(void)
{
    W25QXX_CS0;                            //ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    SPI1_ReadWriteByte(W25X_PowerDown);     //<2F><><EFBFBD>͵<EFBFBD><CDB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    W25QXX_CS1;                            //ȡ<><C8A1>Ƭѡ
    delayus(3);                            //<2F>ȴ<EFBFBD>TPD
}
//<2F><><EFBFBD><EFBFBD>
void W25QXX_WAKEUP(void)
{
    W25QXX_CS0;                                //ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    SPI1_ReadWriteByte(W25X_ReleasePowerDown);  //  send W25X_PowerDown command 0xAB
    W25QXX_CS1;                                //ȡ<><C8A1>Ƭѡ
    delayus(3);                                //<2F>ȴ<EFBFBD>TRES1
}