在proteus中仿真数码管,在12m晶振时,数码管的第四个不显示, 4m晶振时,数码管都显示,但是闪烁。。。。。。
下周板子回来后,用板子实验。。。。。。
感觉程序应该没什么问题。。。。。
就是每10ms在定时中断中调用显示函数Dis();
#include <pic.h>
#include "delay.h"
unsigned char tick;
unsigned char sec;
const unsigned char num_code[]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90,0xC6};
unsigned char dis_buf[4]={1,2,3,5};
unsigned int ad_result[8];
__CONFIG( HS & WDTDIS& PWRTEN& BORDIS& UNPROTECT );
interrupt ISR()
{
if(TMR1IF&&TMR1IE)
{
TMR1IF=0;
TMR1H=(65526-83000/3)/256;
TMR1L=(65526-83000/3)%256;//11.0592M 10.017MS
tick++;
if(tick>=100)
{
tick=0;
sec++;
dis_buf[2]=sec%10;
dis_buf[1]=(sec%100)/10;
dis_buf[0]=sec/100;
}
Dis();//显示
}
}
Init_Tmr1()
{
PEIE=1;
TMR1IF=0;
TMR1IE=1;
T1CKPS1=0;
T1CKPS0=0;
TMR1CS=0;
TMR1H=(65526-83000/3)/256;
TMR1L=(65526-83000/3)%256;//11.0592M 10.017MS
TMR1ON=1;
}
Init_Dis()
{
TRISC0=0;
TRISC1=0;
TRISC2=0;
TRISC3=0;//BIT
TRISB=0X0;
PORTB=0XFF;
}
Dis()
{
static unsigned char step=3;
switch(step){
case 0:
RC0=0;
RC1=1;
RC2=1;
RC3=1;
PORTB=num_code[dis_buf[0]];
break;
case 1:
RC0=1;
RC1=0;
RC2=1;
RC3=1;
PORTB=num_code[dis_buf[1]];
break;
case 2:
RC0=1;
RC1=1;
RC2=0;
RC3=1;
PORTB=num_code[dis_buf[2]];
break;
case 3:
RC0=1;
RC1=1;
RC2=1;
RC3=0;
PORTB=num_code[dis_buf[3]];
break;
default: break;
}
step++;
if(step>=4)
step=0;
}
void Ad_Init(void)
{
ADCON1=0X80;//right ,all pin analog
ADCS1=1; ADCS0=0;//F_OSC/32
TRISA0=1;
TRISA1=1;
TRISA2=1;
TRISA3=1;
TRISA5=1;
TRISE|=0X07;
ADON=1;//AD MODULE WORK
}
unsigned int Ad_Convert(unsigned char ch)
{
unsigned int ad_result;
Ad_Init();
if(ch<=7)
{
ADCON0&=~(7<<3);
ADCON0|=ch<<3;
}
DelayUs(20);
ADGO=1;
for(ad_result=0;ad_result<1000;ad_result++)
{
if(ADGO==0)
break;
}
DelayMs(1);
ad_result=ADRESH&0XFF;
ad_result=ad_result<<8;
ad_result=ad_result+ADRESL;
return ad_result;
}
main()
{
unsigned char i=0;
Ad_Init();
Init_Tmr1();
Init_Dis();
GIE=1;
while(1)
{
for (i=0;i<8;i++)
ad_result=Ad_Convert(i);
}
}
友情提示: 此问题已得到解决,问题已经关闭,关闭后问题禁止继续编辑,回答。
you also do NOT call another function from within the ISR(). put the dis() call in your main loop.
其实,也怀疑程序有错的,但是找不出来。。。。。
下周,在板子上试试看。。。。。。。。。
另外,main loop中还要添加很多其他任务中的,不太适合加DIS........
as to dis(), you can set up a software flag in the isr() so that every 10ms, that flag is set by the isr() and in the main loop, you run dis() which checks the flag. if that flag is up, it clears that flag and then does its thing. aka create a "software" interrupt of your own for dis() but outside of the real isr().
proteus不能在修改段显示时,必须禁止全部位选。。。。。。。。
实际电路中应该没有这个问题。。。。。
例如;
case 1:
RC0=1;
RC1=0;
RC2=1;
RC3=1;
PORTB=num_code[dis_buf[1]];
break;
改为:
case 1:
RC0=1;
RC1=1;
RC2=1;
RC3=1;
PORTB=num_code[dis_buf[1]];
case 1:
RC0=1;
RC1=0;
RC2=1;
RC3=1;
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