基于51单片机的8路AD电压采集与测量

/************************************************************************** By MAKE ***************************************************************************/ #include "adc0809.c" #define LED_Data P2 #define A 10 #define U 11 sbit LED1=P3^0; sbit LED2=P3^1; sbit LED3=P3^2; sbit LED4=P3^3; sbit dp=P3^5; #define LED_slect P3 static uchar dispdata[4]; void decodenum(float adv,uchar chn) { uint temp; temp=(uint)(adv*100); dispdata[0]=temp/100; dispdata[1]=temp/10%10; dispdata[2]=temp%10; dispdata[3]=chn; } void select(uchar LED) { switch(LED) { case 0:LED1=0;break; case 1:LED2=0;break; case 2:LED3=0;break; case 3:LED4=0;break; default: LED_slect=0xff; } } void dispone(uchar LED,bit ifpoint,uchar number) //,number 0--9 { select(LED); if(ifpoint) dp=1; else dp=0; LED_Data=num[number]|0x80; delayus(200); LED_slect=0xff; } void disp() { uchar i; bit point; for(i=0;i<4;i++) { if(i==1) point=0; else point=1; dispone(i,point,dispdata[i]); } }