通过５１仿真器能不能看出红外遥控器的脉冲宽度？我的意思是用２个中断测正脉冲宽度，在程序里定义一个数组，把每个脉冲的时间存入数组，这样有问题吗？我在Keil里看数组，结果都是有２个间隔是０，难道脉冲很短测不出吗？
#include<d:keilC51INCmath.h>
#include<d:keilC51INCabsacc.h>
#include<d:KeilC51INCintrins.h>
#include<d:KeilC51INCstring.h>
#include<d:KeilC51INCstdio.h>
#include <reg52.h>
#define uint unsigned int
#define uchar unsigned char
#define ulong unsigned long
#define code0_min 700
#define code0_max 500
#define code1_min 1400
#define code1_max 1900
uchar idata m_ncounter;//接受的一桢数据位数
uint idata m_wcode;//接收下来的数据
uint idata m_wircode;
uint xdata wcountervalue[100] ;
sbit BEEP = P1^0;
uint data flag;
#if 0
void delay_100us(void)
{
uchar i=48;
while(--i);
}
#endif
//初始化
void MCU_Init()
{
EA = 1;
TMOD = 0x11;
ET0 = 0;
ET1 = 0;
TH0 = 0;
TL0 = 0;
TR0 = 0;
EX0 = 1;
EX1 = 0;
IT0 = 1; //下降沿触发中断
IT0 = 1;
m_wcode = 0;
// P1 = 0;
// TH1 = 0x4C;
//TL1 = 0x00;
//TR1 = 1;
BEEP = 1;
}
void IR_int0() interrupt 0 //外部中断（脉冲后沿）
{
EX0 = 0;
TR0 = 1;
EX1 = 1;
EX0 = 1;
}
void IR_int1() interrupt 2 //外部中断（脉冲后沿）
{
EX1 = 0;
TR0 = 0;
flag++;
wcountervalue[flag] = TH0;
wcountervalue[flag]=(wcountervalue[flag] <<8);
wcountervalue[flag]=wcountervalue[flag] + TL0;
TH0 = 0;
TL0 = 0;
if(flag == 40)
{
BEEP = 0;
}
EX1 = 1;
}
void main()
{
MCU_Init();
while(1)
{
;
}
} ![]() |
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