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);
}
}
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