/*************** writer:shopping.w ******************/#include <reg52.h>#define uint unsigned int#define uchar unsigned charuchar Receive_Buffer[101];uchar Buf_Index = 0;uchar code DSY_CODE[]={ 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x00}; void Delay(uint x){ uchar i; while(x--) { for(i=0;i<120;i++); }} void main(){ uchar i; P0 = 0x00; Receive_Buffer[0]=i; SCON = 0x50; TMOD = 0x20; PCON = 0x00; TH1 = 0xfd; TL1 = 0xfd; EA = 1; EX0 = 1; IT0 = 1; ES = 1; IP = 0x01; TR1 = 1; while(1) { for(i=0;i<100;i++) { if(Receive_Buffer
==-1) break; P0 = DSY_CODE[Receive_Buffer]; Delay(200); } Delay(200); }} void Serial_INT() interrupt 4{ uchar c; if(RI==0) return; ES = 0; RI = 0; c = SBUF; if(c>='0' && c<='9') { Receive_Buffer[Buf_Index]=c-'0'; Receive_Buffer[Buf_Index+1]=-1; Buf_Index = (Buf_Index+1)%100; } ES = 1;} void EX_INT0() interrupt 0{ uchar *s = ("Receiving From 8051...
"); uchar i = 0; while(s!=' ') { SBUF = s; while(ti == 0); TI = 0; i++; }}
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