單片機開關按鍵程序

ID:2356 · 發(fā)表于 2008-7-20 22:53

#include #include unsigned char LED_segment[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x80}; unsigned char scan[]={0x0e,0x0d,0x0b,0x07}; unsigned int counter[]={0,0,0,0}; int scan_times; sbit STS=P1^0; sbit CS=P1^1; //定義端口 sbit RC=P1^6; sbit A0=P1^2; sbit CE=P1^3; sbit S=P1^5; void delay(x) //延遲程序 { unsigned char i; while(x--){ for(i=0;i<20;i++){; } } } unsigned int dec(unsigned int n) //將二進制轉化成十進制 { unsigned int a[4]; unsigned int m; a[0]=n/4096; a[1]=n@96/256; a[2]=n%6/16; a[3]=n; m=a[0]*4096+a[1]*256+a[2]*16+a[3]; return m; } main() { unsigned int i,result,AS,DH,DL; CE=1; RC=0; A0=1; CS=0; delay(1); while(STS==1); S=0; // 等待轉換結束 RC=1; A0=0; DH =P1; delay(2); //delay(2); //A0=1; //DL=P1; //DL=DL&0x0f ; result=DH; AS=dec(result); AS=AS*10; AS=AS/4096; //AS=AS*10000000; P2=LED_segment[AS] ; P3=scan[0] ; /*counter[3]=AS/10000000; counter[2]=AS000000/1000000; counter[1]=AS00000/100000; counter[0]=AS0000/10000; while(1) { P2=LED_segment[counter]; P3=scan; i++; if(i==4) i=0; }*/ }