51单片机按键控制流水灯模式，程序加proteus仿真

#include <reg52.h> #define uchar unsigned char #define uint unsigned int int flag=0; uchar code Pattern_P0[]= { 0xff,0xf0,0x0f,0x00,0xff,0x0f }; uchar code Pattern_P2[]= { 0xf5,0xf6,0xfe,0x54,0x56,0x76,0xd7,0x49,0xa9,0xe4,0xc6 }; void DelayMS(uint x) { uchar t; while(x--) { for(t=0;t<120;t--); } } void main() { uchar k,t,Key_State; P0 = 0xff; P1 = 0xff; while(1) { uchar i; t = P1; { DelayMS(10); if(t != P1) continue; Key_State = ~t >> 4; k = 0; while(Key_State != 0) { k++; Key_State >>= 1; } switch(k) { case 1: flag=1; break; case 2: flag=2; break; case 3: P0 = 0x0f; flag=0; break; case 4: P0 = 0xff; flag=0; } if(flag==1) { for(i=6;i>0;i--) { //P0=Pattern_P0[i]; P0=Pattern_P0[i]; DelayMS(15000); } } if(flag==2) { for(i=10;i>0;i--) { //P0=Pattern_P0[i]; P0=Pattern_P2[i]; DelayMS(15000); } } } } }