串行編程器源程序(Keil C語言)
//FID=01:AT89C2051系列編程器
//實(shí)現(xiàn)編程的讀，寫，擦等細(xì)節(jié)
//AT89C2051的特殊處:給XTAL一個(gè)脈沖，地址計(jì)數(shù)加1;P1的引腳排列與AT89C51相反，需要用函數(shù)轉(zhuǎn)換
#include

#define C2051_P3_7?P1_0
#define C2051_P1?P0//注意引腳排列相反
#define C2051_P3_0 ?P1_1
#define C2051_P3_1?P1_2
#define C2051_XTAL?P1_4
#define C2051_P3_2?P1_5
#define C2051_P3_3?P1_6
#define C2051_P3_4?P1_7
#define C2051_P3_5?P3_5
?
void InitPro01()//編程前的準(zhǔn)備工作
{
?SetVpp0V();
?P0=0xff;
?P1=0xff;
?C2051_P3_5=1;
?C2051_XTAL=0;
?Delay_ms(20);
?nAddress=0x0000;
?SetVpp5V();
}

void ProOver01()//編程結(jié)束后的工作，設(shè)置合適的引腳電平
{
?SetVpp5V();
?P0=0xff;
?P1=0xff;
?C2051_P3_5=1;
?C2051_XTAL=1;
}

BYTE GetData()//從P0口獲得數(shù)據(jù)
{
?B_0=P0_7;
?B_1=P0_6;
?B_2=P0_5;
?B_3=P0_4;
?B_4=P0_3;
?B_5=P0_2;
?B_6=P0_1;
?B_7=P0_0;
?return B;
}

void SetData(BYTE DataByte)//轉(zhuǎn)換并設(shè)置P0口的數(shù)據(jù)
{
?B=DataByte;
?P0_0=B_7;
?P0_1=B_6;
?P0_2=B_5;
?P0_3=B_4;
?P0_4=B_3;
?P0_5=B_2;
?P0_6=B_1;
?P0_7=B_0;
}

void ReadSign01()//讀特征字
{
?InitPro01();
?Delay_ms(1);
//-----------------------------------------------------------------------------
?//根據(jù)器件的DataSheet，設(shè)置相應(yīng)的編程控制信號
?C2051_P3_3=0;
?C2051_P3_4=0;
?C2051_P3_5=0;
?C2051_P3_7=0;
?Delay_ms(20);
?ComBuf[2]=GetData();
?C2051_XTAL=1;
?C2051_XTAL=0;
?Delay_us(20);
?ComBuf[3]=GetData();
?ComBuf[4]=0xff;
//-----------------------------------------------------------------------------
?ProOver01();
}

void Erase01()//擦除器件
{
?InitPro01();
//-----------------------------------------------------------------------------
?//根據(jù)器件的DataSheet，設(shè)置相應(yīng)的編程控制信號
?C2051_P3_3=1;
?C2051_P3_4=0;
?C2051_P3_5=0;
?C2051_P3_7=0;
?Delay_ms(1);
?SetVpp12V();
?Delay_ms(1);
?C2051_P3_2=0;
?Delay_ms(10);
?C2051_P3_2=1;
?Delay_ms(1);
//-----------------------------------------------------------------------------
?ProOver01();
}

BOOL Write01(BYTE Data)//寫器件
{
//-----------------------------------------------------------------------------
?//根據(jù)器件的DataSheet，設(shè)置相應(yīng)的編程控制信號
?//寫一個(gè)單元
?C2051_P3_3=0;
?C2051_P3_4=1;
?C2051_P3_5=1;
?C2051_P3_7=1;
?SetData(Data);
?SetVpp12V();
?Delay_us(20);
?C2051_P3_2=0;
?Delay_us(20);
?C2051_P3_2=1;
?Delay_us(20);
?SetVpp5V();
?Delay_us(20);
?C2051_P3_4=0;
?Delay_ms(2);
?nTimeOut=0;
?P0=0xff;
?nTimeOut=0;
?while(!GetData()==Data)//效驗(yàn):循環(huán)讀，直到讀出與寫入的數(shù)相同
?{
??nTimeOut++;
??if(nTimeOut>1000)//超時(shí)了
??{
???return 0;
??}
?}
?C2051_XTAL=1;
?C2051_XTAL=0;//一個(gè)脈沖指向下一個(gè)單元
//-----------------------------------------------------------------------------
?return 1;
}

BYTE Read01()//讀器件
{
?BYTE Data;
//-----------------------------------------------------------------------------
?//根據(jù)器件的DataSheet，設(shè)置相應(yīng)的編程控制信號
?//讀一個(gè)單元
?C2051_P3_3=0;
?C2051_P3_4=0;
?C2051_P3_5=1;
?C2051_P3_7=1;
?Data=GetData();
?C2051_XTAL=1;
?C2051_XTAL=0;//一個(gè)脈沖指向下一個(gè)單元
//-----------------------------------------------------------------------------
?return Data;
}

void Lock01()//寫鎖定位
{
?InitPro01();//先設(shè)置成編程狀態(tài)
//-----------------------------------------------------------------------------
?//根據(jù)器件的DataSheet，設(shè)置相應(yīng)的編程控制信號
?if(ComBuf[2]>=1)//ComBuf[2]為鎖定位
?{
??C2051_P3_3=1;
??C2051_P3_4=1;
??C2051_P3_5=1;
??C2051_P3_7=1;
??Delay_us(20);
??SetVpp12V();
??Delay_us(20);
??C2051_P3_2=0;
??Delay_us(20);
??C2051_P3_2=1;
??Delay_us(20);
??SetVpp5V();
?}
?if(ComBuf[2]>=2)
?{
??C2051_P3_3=1;
??C2051_P3_4=1;
??C2051_P3_5=0;
??C2051_P3_7=0;
??Delay_us(20);
??SetVpp12V();
??Delay_us(20);
??C2051_P3_2=0;
??Delay_us(20);
??C2051_P3_2=1;
??Delay_us(20);
??SetVpp5V();
?}
//-----------------------------------------------------------------------------
?ProOver01();
}

void PreparePro01()//設(shè)置pw中的函數(shù)指針，讓主程序可以調(diào)用上面的函數(shù)
{
?pw.fpInitPro=InitPro01;
?pw.fpReadSign=ReadSign01;
?pw.fpErase=Erase01;
?pw.fpWrite=Write01;
?pw.fpRead=Read01;
?pw.fpLock=Lock01;
?pw.fpProOver=ProOver01;
}