at89c52测频率程序出问题了

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楼主 | 2017-8-23 20:50 | 只看该作者回帖奖励

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at89c52, TE, se, TI, unsigned

#include <reg52.h>
#include <stdio.h>
#include <intrins.h>
#include <absacc.h>

extern serial_initial();

unsigned int a;
unsigned int n;
unsigned int count;
#define SEGMENT XBYTE[0x7fff]
#define BIT_LED XBYTE[0xbfff]
unsigned char code seg_code[]={0x3f,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6f,0x77,0x7C,0x39,0x5E,0x79,0x71,0x00};
main()
{
serial_initial();
TMOD=0x51;             //¼ÆêyÆ÷1￡¬16Î»1¤×÷·½ê½ ¶¨ê±Æ÷0￡¬16Î»1¤×÷·½ê½,int0¸ßμçÆ½′￥·￠
TH0 = 0x4c;                               //¶¨ê±Îa50ms
      TL0 = 0x00;
      TL1 = 0x00;                               //¼Æêy3õÖμÎa0¸ö
      TH1 = 0x00;
      TR0=1;
      TR1=1;             //Æô¶ˉ¶¨ê±Æ÷
EA=1;                                        //′ò¿a×üÖD¶Ï
      n=0;
      count=0;
      a=0;
while(1)
{
if(count==20)                //¶¨ê±Æ÷éè¶¨Îa1sμÄê±¼ä
{
TR1=0;
TR0=0;
a=n*65536+TH1*256+TL1;
a=a-1;
printf("a=%s",a);

n=0;
count=0;
TH0 = 0x4c;                               //¶¨ê±Îa50ms
TL0 = 0x00;
TL1 = 0x00;                               //¼Æêy3õÖμÎa0¸ö
TH1 = 0x00;
TR0=1;
TR1=1;                //ÖØDÂÆô¶ˉ¶¨ê±Æ÷
ET0=1;
ET1=1;                //′ò¿aÖD¶Ï
EA=1;                                        //′ò¿a×üÖD¶Ï
}
}

}

void TIME0(void) interrupt 1             //¶¨ê±Æ÷0òç3öÖD¶Ï
{
count ++;
      TH0 = 0x4c;                               //¶¨ê±Îa50ms
      TL0 = 0x00;
}
void TIME1(void) interrupt 3 //¼ÆêyÆ÷1òç3öÖD¶Ï
{
      n++;                //òç3ö′Îêy¼ó1
TL1 = 0x00;                               //¼Æêy3õÖμÎa0¸ö
      TH1 = 0x00;
}

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