想实现单片机100-0循环，不知道错在哪里？附原理图

ID:744168 · 发表于 2020-5-4 21:15

本帖最后由飞鱼seraet 于 2020-5-5 21:11 编辑

#include<reg52.h>
unsigned char code DuanMa[16]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x80,0xc6,0xc0,0x86,0x8e,};
unsigned char number;

void Delay(unsigned int t)
{
  while(t--);
}

void DisplaySMG(unsigned char dat,unsigned char pos)
{
  P2=(P2&0x1f)|0xc0;
  P0=0x01<<pos;
  P2=(P2&0x1f)|0xe0;
  P0=dat;
}

void dynamic()
{
  DisplaySMG(DuanMa[number/100],1);
  Delay(200);
  DisplaySMG(DuanMa[number%100/10],2);
  Delay(200);
  DisplaySMG(DuanMa[number%10],3);
  Delay(200);
}

void delay2(unsigned char t)
{
  while(t--);
  {
dynamic();
  }
}

void main()
{ number=0x64;
while(1)
  {
      Delay(200);
      dynamic();
      number--;
if(number=0)
{
number=100;
}
delay2(60);
  }
}

ID:452950 · 发表于 2020-5-5 09:04

if(number==0)number=100;

ID:744168 · 发表于 2020-5-5 13:57

xxpp2011 发表于 2020-5-5 09:04
if(number==0)number=100;

谢谢！！

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