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hellotouchGFX/SPI_W25QXX_Template/HARDWARE/W25QXX/w25qxx.c
Aladdin-Wang ca118fab5e STM32F429读取外部flash图片
2020-07-07 19:56:01 +08:00

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#include "w25qxx.h"
#include "spi.h"
#include "delay.h"
#include "usart.h"
//////////////////////////////////////////////////////////////////////////////////
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֻ<EFBFBD><D6BB>ѧϰʹ<CFB0>ã<EFBFBD>δ<EFBFBD><CEB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɣ<EFBFBD><C9A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>κ<EFBFBD><CEBA><EFBFBD>;
//ALIENTEK STM32<33><32><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
//W25QXX<58><58><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
//<2F><><EFBFBD><EFBFBD>ԭ<EFBFBD><D4AD>@ALIENTEK
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>̳:www.openedv.com
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>:2015/12/28
//<2F>汾<EFBFBD><E6B1BE>V1.0
//<2F><>Ȩ<EFBFBD><C8A8><EFBFBD>У<EFBFBD><D0A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ؾ<EFBFBD><D8BE><EFBFBD>
//Copyright(C) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӿƼ<D3BF><C6BC><EFBFBD><EFBFBD>޹<EFBFBD>˾ 2014-2024
//All rights reserved
//////////////////////////////////////////////////////////////////////////////////
u16 W25QXX_TYPE=W25Q256; //Ĭ<><C4AC><EFBFBD><EFBFBD>W25Q256
//4KbytesΪһ<CEAA><D2BB>Sector
//16<31><36><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ1<CEAA><31>Block
//W25Q256
//<2F><><EFBFBD><EFBFBD>Ϊ32M<32>ֽ<EFBFBD>,<2C><><EFBFBD><EFBFBD>512<31><32>Block,8192<39><32>Sector
//<2F><>ʼ<EFBFBD><CABC>SPI FLASH<53><48>IO<49><4F>
void W25QXX_Init(void)
{
u8 temp;
RCC->AHB1ENR|=1<<5; //ʹ<><CAB9>PORTFʱ<46><CAB1>
GPIO_Set(GPIOF,PIN6,GPIO_MODE_OUT,GPIO_OTYPE_PP,GPIO_SPEED_100M,GPIO_PUPD_PU); //PF6<46><36><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
W25QXX_CS=1; //SPI FLASH<53><48>ѡ<EFBFBD><D1A1>
SPI5_Init(); //<2F><>ʼ<EFBFBD><CABC>SPI
SPI5_SetSpeed(SPI_SPEED_2); //<2F><><EFBFBD><EFBFBD>Ϊ48Mʱ<4D><CAB1>(<28><>Ƶ<EFBFBD><C6B5>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>),<2C><><EFBFBD><EFBFBD>ģʽ
W25QXX_TYPE=W25QXX_ReadID(); //<2F><>ȡFLASH ID.
if(W25QXX_TYPE==W25Q256) //SPI FLASHΪW25Q256
{
temp=W25QXX_ReadSR(3); //<2F><>ȡ״̬<D7B4>Ĵ<EFBFBD><C4B4><EFBFBD>3<EFBFBD><33><EFBFBD>жϵ<D0B6>ַģʽ
if((temp&0X01)==0) //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>4<EFBFBD>ֽڵ<D6BD>ַģʽ,<2C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>4<EFBFBD>ֽڵ<D6BD>ַģʽ
{
W25QXX_CS=0; //ѡ<><D1A1>
SPI5_ReadWriteByte(W25X_Enable4ByteAddr);//<2F><><EFBFBD>ͽ<EFBFBD><CDBD><EFBFBD>4<EFBFBD>ֽڵ<D6BD>ַģʽָ<CABD><D6B8>
W25QXX_CS=1; //ȡ<><C8A1>Ƭѡ
}
}
}
//<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>ֵ
u8 W25QXX_ReadSR(u8 regno)
{
u8 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_CS=0; //ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
SPI5_ReadWriteByte(command); //<2F><><EFBFBD>Ͷ<EFBFBD>ȡ״̬<D7B4>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
byte=SPI5_ReadWriteByte(0Xff); //<2F><>ȡһ<C8A1><D2BB><EFBFBD>ֽ<EFBFBD>
W25QXX_CS=1; //ȡ<><C8A1>Ƭѡ
return byte;
}
//дW25QXX״̬<D7B4>Ĵ<EFBFBD><C4B4><EFBFBD>
void W25QXX_Write_SR(u8 regno,u8 sr)
{
u8 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_CS=0; //ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
SPI5_ReadWriteByte(command); //<2F><><EFBFBD><EFBFBD>дȡ״̬<D7B4>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
SPI5_ReadWriteByte(sr); //д<><D0B4>һ<EFBFBD><D2BB><EFBFBD>ֽ<EFBFBD>
W25QXX_CS=1; //ȡ<><C8A1>Ƭѡ
}
//W25QXXдʹ<D0B4><CAB9>
//<2F><>WEL<45><4C>λ
void W25QXX_Write_Enable(void)
{
W25QXX_CS=0; //ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
SPI5_ReadWriteByte(W25X_WriteEnable); //<2F><><EFBFBD><EFBFBD>дʹ<D0B4><CAB9>
W25QXX_CS=1; //ȡ<><C8A1>Ƭѡ
}
//W25QXXд<58><D0B4>ֹ
//<2F><>WEL<45><4C><EFBFBD><EFBFBD>
void W25QXX_Write_Disable(void)
{
W25QXX_CS=0; //ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
SPI5_ReadWriteByte(W25X_WriteDisable); //<2F><><EFBFBD><EFBFBD>д<EFBFBD><D0B4>ָֹ<D6B9><D6B8>
W25QXX_CS=1; //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
u16 W25QXX_ReadID(void)
{
u16 Temp = 0;
W25QXX_CS=0;
SPI5_ReadWriteByte(0x90);//<2F><><EFBFBD>Ͷ<EFBFBD>ȡID<49><44><EFBFBD><EFBFBD>
SPI5_ReadWriteByte(0x00);
SPI5_ReadWriteByte(0x00);
SPI5_ReadWriteByte(0x00);
Temp|=SPI5_ReadWriteByte(0xFF)<<8;
Temp|=SPI5_ReadWriteByte(0xFF);
W25QXX_CS=1;
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>ַ(<28><><EFBFBD><EFBFBD>32bit)
//NumByteToRead:Ҫ<><D2AA>ȡ<EFBFBD><C8A1><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD>(<28><><EFBFBD><EFBFBD>65535)
void W25QXX_Read(u8* pBuffer,u32 ReadAddr,u16 NumByteToRead)
{
u16 i;
W25QXX_CS=0; //ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
SPI5_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
{
SPI5_ReadWriteByte((u8)((ReadAddr)>>24));
}
SPI5_ReadWriteByte((u8)((ReadAddr)>>16)); //<2F><><EFBFBD><EFBFBD>24bit<69><74>ַ
SPI5_ReadWriteByte((u8)((ReadAddr)>>8));
SPI5_ReadWriteByte((u8)ReadAddr);
for(i=0;i<NumByteToRead;i++)
{
pBuffer[i]=SPI5_ReadWriteByte(0XFF); //ѭ<><D1AD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
}
W25QXX_CS=1;
}
//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>ַ(<28><><EFBFBD><EFBFBD>32bit)
//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(u8* pBuffer,u32 WriteAddr,u16 NumByteToWrite)
{
u16 i;
W25QXX_Write_Enable(); //SET WEL
W25QXX_CS=0; //ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
SPI5_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
{
SPI5_ReadWriteByte((u8)((WriteAddr)>>24));
}
SPI5_ReadWriteByte((u8)((WriteAddr)>>16)); //<2F><><EFBFBD><EFBFBD>24bit<69><74>ַ
SPI5_ReadWriteByte((u8)((WriteAddr)>>8));
SPI5_ReadWriteByte((u8)WriteAddr);
for(i=0;i<NumByteToWrite;i++)SPI5_ReadWriteByte(pBuffer[i]);//ѭ<><D1AD>д<EFBFBD><D0B4>
W25QXX_CS=1; //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>ַ(<28><><EFBFBD><EFBFBD>32bit)
//NumByteToWrite:Ҫд<D2AA><D0B4><EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD>(<28><><EFBFBD><EFBFBD>65535)
//CHECK OK
void W25QXX_Write_NoCheck(u8* pBuffer,u32 WriteAddr,u16 NumByteToWrite)
{
u16 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>ַ(<28><><EFBFBD><EFBFBD>32bit)
//NumByteToWrite:Ҫд<D2AA><D0B4><EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD>(<28><><EFBFBD><EFBFBD>65535)
u8 W25QXX_BUFFER[4096];
void W25QXX_Write(u8* pBuffer,u32 WriteAddr,u16 NumByteToWrite)
{
u32 secpos;
u16 secoff;
u16 secremain;
u16 i;
u8 * 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>4096<39><36><EFBFBD>ֽ<EFBFBD>
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_CS=0; //ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
SPI5_ReadWriteByte(W25X_ChipErase); //<2F><><EFBFBD><EFBFBD>Ƭ<EFBFBD><C6AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
W25QXX_CS=1; //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(u32 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_CS=0; //ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
SPI5_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
{
SPI5_ReadWriteByte((u8)((Dst_Addr)>>24));
}
SPI5_ReadWriteByte((u8)((Dst_Addr)>>16)); //<2F><><EFBFBD><EFBFBD>24bit<69><74>ַ
SPI5_ReadWriteByte((u8)((Dst_Addr)>>8));
SPI5_ReadWriteByte((u8)Dst_Addr);
W25QXX_CS=1; //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_CS=0; //ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
SPI5_ReadWriteByte(W25X_PowerDown); //<2F><><EFBFBD>͵<EFBFBD><CDB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
W25QXX_CS=1; //ȡ<><C8A1>Ƭѡ
delay_us(3); //<2F>ȴ<EFBFBD>TPD
}
//<2F><><EFBFBD><EFBFBD>
void W25QXX_WAKEUP(void)
{
W25QXX_CS=0; //ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
SPI5_ReadWriteByte(W25X_ReleasePowerDown); // send W25X_PowerDown command 0xAB
W25QXX_CS=1; //ȡ<><C8A1>Ƭѡ
delay_us(3); //<2F>ȴ<EFBFBD>TRES1
}
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