電壓表程序

ID:205169 · 發(fā)表于 2017-5-26 17:48

A/D

#include <reg51.h>

#define uchar unsigned char

#define uint unsigned int

uchar code LEDData[]= {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,

0x7f,0x6f};

sbit OE=P2^7;

sbit EOC=P2^6;

sbit START=P2^5;

sbit CLK=P2^4;

sbit ALE=P2^5;

void Delay(uint count)

{

uchar i;

while(count--)

for(i=0;i<120;i++);

}

void Display_Result(uchar num)

{

num=num*5/255;

P2 = 0xf7; //FB=1111 0111

P0 = LEDData[num%10];

Delay(5);

P2 = 0xfb;

P0 = LEDData[num%100/10];

Delay(5);

P2 = 0xfd;

P0 = LEDData[num/100];

Delay(5);

}

void main(void)

{

TMOD = 0x02;

TH0 = 206;

TL0 = 206;

TR0=1;

EA=1;

ET0=1;

ALE=0;

ALE=1;

while(1)

{

START = 0;

START= 1;

START = 0;

while(EOC==0);

OE = 1;

Display_Result(P1);

OE = 0;

}

void Timer0_INT() interrupt 1

{

CLK = !CLK;

}

ID:227504 · 發(fā)表于 2017-12-8 20:06

拜托，有原理圖可好

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電壓表程序

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