W25Qxx.zip_w25Q80 源码_w25qxx

#include <STC12C5A60S2.H> #include "W25Q80.H" //4Kbytes为一个Sector //16个扇区为1个Block //W25X40 //容量为512K字节,共,128个Sector //读取SPI_FLASH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 /* 1 /CS I 片选端输入 2 DO(IO1) I/O 数据输出（数据输入输出1）*1 3 /WP(IO2) I/O 写保护输入（数据输入输出2）*2 5 DI(IO0) I/O 数据输入（数据输入输出0）*1 6 CLK I 串行时钟输入 7 /HOLD(IO3) I/O 保持端输入（数据输入输出3）*2 */ sbit CS = P1^7; sbit DO = P0^6; sbit WP = P1^5; sbit HOLD = P1^4; sbit CLK = P1^3; sbit DI0 = P1^2; sbit DI1 = P1^6; sbit DI2 = P1^5; sbit DI3 = P1^4; /* 模拟SPI时序 */ UINT8 spi(UINT8 Spi_Byte) { UINT8 i; for(i=0;i<8;i++) { if(Spi_Byte & 0x80) SI = 1; else SI = 0; Spi_Byte <<= 1; CLK = 1; if(SO) Spi_Byte |= 0X1; CLK = 0; } return Spi_Byte; } /* 写使能 */ UINT8 Write_Enable(void) { char Spi_Byte; while(BUSY);//等待芯片空闲 CS = 0; //片选 spi(0X06); //发送指令 CS = 1; return Spi_Byte; } /* 写禁止 */ void Write_Disable(void) { while(BUSY);//等待芯片空闲 CS = 0; //片选 spi(0X04); //发送指令 CS = 1; } /* 读状态寄存器 输入: 状态寄存器1 / 状态寄存器2 输出：u8 u8 状态寄存器值1 或者 u8 状态寄存器值2 */ UINT8 Read_Status_Register(UINT8 Status_Reg) { UINT8 temp=0; CS = 0; //片选 if(Status_Reg == 1) spi(0X05); //发送指令 if(Status_Reg == 2) spi(0x35); //发送指令 temp |= spi(0Xff); //读寄存器 CS = 1; return temp; } /* 写状态寄存器 输入: u16 状态寄存器值 */ void Wriet_Status_Register(UINT16 Status_Reg) { while(BUSY);//等待芯片空闲 CS = 0; //片选 spi(0X01); //发送指令 spi(Status_Reg>>8); //发送寄存器值 spi(Status_Reg); //发送寄存器值 CS = 1; } /* 掉电模式 */ void Power_down(void) { while(BUSY);//等待芯片空闲 CS = 0; //片选 spi(0XAB); //发送指令 CS = 1; } /* 读取制造商/设备 ID 输入: 无 输出：u16 b24-b16 数据0x00 b15-b8 Manufacturer ID b7-b0 Manufacturer ID */ UINT32 Read_ManufacturerID(void) { UINT32 temp=0; while(BUSY);//等待芯片空闲 CS = 0; //片选 spi(0X90); //发送指令 spi(0X00); spi(0X00); temp |= (temp|=spi(0Xff))<<16; temp |= (temp|=spi(0Xff))<<8; temp |= spi(0Xff); CS = 1; return temp; } /* 读取JEDEC ID 输入: 无 输出：u32 b24-b16 制造商 ID=0xEF b15-b8 JEDEC ID b7-b0 JEDEC ID */ UINT32 Read_JEDECID(void) { UINT32 temp=0; while(BUSY);//等待芯片空闲 CS = 0; //片选 spi(0X9f); //发送指令 temp |= (temp|=spi(0Xff))<<16; temp |= (temp|=spi(0Xff))<<8; temp |= spi(0Xff); CS = 1; return temp; } /* 读取Unique ID 输入: 8byt指针 输出：8byt Unique ID */ void Read_UniqueID(UINT8 *UniqueID) { UINT8 i; while(BUSY);//等待芯片空闲 CS = 0; //片选 spi(0X4b); //发送指令 spi(0Xff); spi(0Xff); spi(0Xff); spi(0Xff); for(i=0;i<8;i++) { *UniqueID++ = spi(0Xff); } CS = 1; } /* 读取Read SFDP Register 输入: 地址，指针，长度 输出：SFDP Register */ void Read_SFDP_Register(UINT8 SFDP_Addr, UINT8 *SFDP_Data, UINT16 SFDP_Length) { UINT16 i; while(BUSY);//等待芯片空闲 CS = 0; //片选 spi(0X5A); //发送指令 spi(0X00); spi(0X00); spi(SFDP_Addr); //发送地址 spi(0X00); for(i=0;i<SFDP_Length;i++) { *SFDP_Data++ = spi(0Xff); } CS = 1; } /* Erase Security Registers(擦除安全寄存器) 输入: 选择安全寄存器1,2,3 输出：NUM */ void Erase_Security_Registers(UINT8 Security_Registers) { while(BUSY);//等待芯片空闲 CS = 0; //片选 spi(0X44); //发送指令 spi(0x00); spi(Security_Registers<<4); spi(0x00); //发送地址 CS = 1; } /* Program Security Registers(编程安全寄存器) 输入: 选择安全寄存器1,2,3 寄存器开始地址 寄存器值指针 长度 输出：NUM */ void Program_Security_Registers(UINT8 Security_Registers, UINT8 Security_Add, UINT8 *Regedit_Data, UINT16 Length) { UINT16 i; while(BUSY);//等待芯片空闲 CS = 0; //片选 spi(0X42); //发送指令 spi(0x00); spi(Security_Registers<<4); spi(Security_Add); //发送地址 for(i=0;i<Length;i++) { spi(*Regedit_Data++); } CS = 1; } /* Read Security Registers(读取安全寄存器) 输入: 选择安全寄存器1,2,3 寄存器开始地址 寄存器值指针 长度 输出：读取指针 */ void Read_Security_Registers(UINT8 Security_Registers, UINT8 Security_Add, UINT8 *Regedit_Data, UINT16 Length) { UINT16 i; while(BUSY);//等待芯片空闲 CS = 0; //片选 spi(0X48); //发送指令 spi(0x00); spi(Security_Registers<<4); spi(Security_Add); //发送地址 spi(0x00); //伪数据 for(i=0;i<Length;i++) { *Regedit_Data++ = spi(0xff);//读取数据 } CS = 1; } /* 读取数据 输入: 24b地址 输出：地址上的数据 */ UINT8 Read_Data(UINT32 address) { UINT8 temp; while(BUSY);//等待芯片空闲 CS = 0; //片选 spi(0x03); //发送读指令 spi(address>>16); //发送地址 spi(address>>8); spi(address); temp = spi(0xff); CS = 1; return temp; } /* 快速读取单线数据 输入: 24b地址 缓存指针 长度 输出：地址上的数据 */ void Fast_Read(UINT32 address, UINT8* pBuffer, UINT16 Length) { UINT16 i; while(BUSY);//等待芯片空闲 CS = 0; //片选 spi(0x0b); //发送读指令 spi(address>>16); //发送地址 spi(address>>8); spi(address); spi(0x00); for(i=0;i<Length;i++) { *pBuffer++ = spi(0xff); } CS = 1; } /* 写入数据 (一次写入256字节，地址不为页开始地址会循环覆盖前面字节) 输入: 24b地址 缓存指针 长度 输出：无 */ void Page_Program(UINT32 address, UINT8* pBuffer, UINT16 Length) { UINT16 i; while(BUSY);//等待芯片空闲 CS = 0; //片选 spi(0x02); //发送读指令 spi(address>>16); //发送地址 spi(address>>8); spi(address); for(i=0;i<Length;i++) { spi(*pBuffer++); } CS = 1; } /* 擦除扇区（4kbye） 输入: 24b地址 输出：无 */ void Sector_Erase(UINT32 address) { while(BUSY);//等待芯片空闲 CS = 0; //片选 spi(0X20); //发送指令 spi(address>>16); //发送地址 spi(address>>8); spi(address); CS = 1; } /* 擦除块（32kbye） 输入: 24b地址 输出：无 */ void Block_Erase_32KB(UINT32 address) { while(BUSY);//等待芯片空闲 CS = 0; //片选 spi(0X52); //发送指令 spi(address>>16); //发送地址 spi(address>>8); spi(address); CS = 1; } /* 擦除块（64kbye） 输入: 24b地址 输出：无 */ void Block_Erase_64KB(UINT32 address) { while(BUSY);//等待芯片空闲 CS = 0; //片选 spi(0Xd8); //发送指令 spi(address>>16); //发送地址 spi(address>>8); spi(address); CS = 1; } /* 擦除整片 输入: 24b地址 输出：无 */ void Chip_Erase(void) { while(BUSY);//等待芯片空闲 CS = 0; //片选 spi(0XC7); //发送指令 CS = 1; } /* 暂停编程或擦除 输入: 无 输出：无 */ void Erase_Program_Suspend(void) { volatile i; CS = 0; //片选 spi(0X75); //发送指令 CS = 1; for(i=0;i<1000;i++); //延时大于20us } /* 恢复编程或擦除 输入: 无 输出：无 */ void Erase_Program_Resume(void) { while(BUSY);//等待芯片空闲 CS = 0; //片选 spi(0X7A); //发送指令 CS = 1; }