89C51编程器端驱动程序的例子

/* 89C51系列CPU编程器接收CPU程序*/#include <reg51.h>#include <intrins.h>#include <absacc.h>#define e 8#define p 9#define l 10sbit led=P3^2;sbit p27=P2^7;sbit p26=P2^6;sbit p36=P3^6;sbit p37=P3^7;sbit rst=P3^3;sbit ale=P3^5;sbit vpp=P3^4;bit b_break;unsigned int adds;//// 13.8mSvoid int_t0(void) interrupt 1 { TH0=-100; b_break=1;}void wait(unsigned char w) { unsigned int t=w*184; b_break=0; TL0=-t%256-1;TH0=-t/256; while (b_break==0) {}}void nop(void) { _nop_();_nop_();_nop_();_nop_(); _nop_();_nop_();_nop_();_nop_(); _nop_();_nop_();_nop_();_nop_(); _nop_();_nop_();_nop_();_nop_(); _nop_();_nop_();_nop_();_nop_();}unsigned char command(void) { TH0=-100;b_break=0; while (RI==0) {if (b_break==1) return(0);} RI=0; return(SBUF);}void earsure(unsigned char cpu) { switch (cpu) { case 1:  //89C51 case 2:rst=p26=1;p27=p36=p37=0;nop();vpp=1;nop();  ale=0;wait(110);ale=1;nop();  break; case 3: case 4:break; case 5: case 6:break; }}void program(unsigned char cpu) { unsigned int bdata adds=0; unsigned char d; switch (cpu) { case 1: //89C51 case 2:  p36=p37=1;rst=1;  while (1) {   TH0=-100;b_break=0;   while (RI==0) {if (b_break==1) return;}   RI=0;   d=SBUF;   //address   P0=adds%256;   P2=adds/256;   p27=1;   //data   P1=d;   nop(); //48clcl   //vpp   vpp=1;   nop(); //48clcl   //ale   ale=0;   wait(1);//100uS   ale=1;   nop(); //10uS   vpp=0;   nop(); //48clcl   p27=0;   nop(); //48clcl   P1=0xff;   TH0=-100;b_break=0;   while (d!=P1) {if (b_break==1) return;} //data polling   SBUF=d;   adds++;  }  break; case 3: case 4: case 5: case 6:break; }}void lock(unsigned char cpu) { unsigned char i; switch (cpu) { case 1: //89c51 case 2:  //lock 1  rst=p26=p36=p27=p37=1;nop();  vpp=1;  nop();  ale=0; // for (i=0;i<6;i++) wait(100);  wait(1);  ale=1;  nop();  vpp=0;  nop();   //lock 2  rst=p26=p27=1;p36=p37=0;nop();  vpp=1;  nop();  ale=0; // for (i=0;i<6;i++) wait(100);  wait(1);  ale=1;  nop();  vpp=0;  nop();   //lock 3  rst=p26=p36=1;p27=p37=0;nop();  vpp=1;  nop();  ale=0; // for (i=0;i<6;i++) wait(100);  wait(1);  ale=1;  nop();  vpp=0;  nop();  break; case 3: case 4: case 5: case 6:break; }}void main(void) { unsigned char disp,flash,temp,cpu; EA=1; SCON=0xd8;PCON=0x80; TMOD=0x21; TL1=TH1=0xff;TR1=1; TH0=-100;ET0=TR0=1; flash=0x80;  while (1) {  temp=command();  switch (temp) {  case 0:  case 1:  //89c51  case 2:  //89C52  case 3:  //80f51  case 4:  //80F52  case 5:  //87F51  case 6:cpu=temp;SBUF=temp;break;//87f52  case e:SBUF=temp;earsure(cpu);break; //erasure  case p:SBUF=temp;program(cpu);break; //program  case l:lock(cpu);SBUF=temp;break; //lock  default:SBUF=temp;break;  }  b_break=0;  if ((++disp)>flash) {disp=0;led=!led;} }}