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研发客服#include #include #include #define e 8 #define p 9 #define l 10 sbit 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; // 13.8mS void 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;} } }
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