pwm信号读不出来求解救 -

标题: pwm信号读不出来求解救 [打印本页]

作者: 石头儿 时间: 2017-11-19 11:03
标题: pwm信号读不出来求解救
我再做一个帆板控制系统的设计，做到这里卡住了！这个设计主要功能是：用风扇吹动帆板，并测量帆板的角度；风扇用pwm控速，键盘输入pwm大小，

角速度传感器子程序运行正常！
12864子程序运行正常
只有pwm控制程序出错，pwm信号到不了定时器里面！

求各位大神帮帮忙！
20黑币悬赏！！！

目录.png (47.28 KB, 下载次数: 61)

pwm.png (168.96 KB, 下载次数: 70)

问题

51.zip

82.44 KB, 下载次数: 2

程序包

作者: 石头儿 时间: 2017-11-19 11:05
使用的stc89c52单片机 c语言编程

作者: 石头儿 时间: 2017-11-19 14:17
#include<reg52.h>
#include "control.h"
#include "12864.h"
#define uchar unsigned char
#define uint unsigned int
sbit A1=P2^2;
sbit A2=P2^3;
sbit ENA=P2^4;
signed int count=0;
unsigned char pwm=100;
unsigned char anjian=0;
uchar numshi=0;
uchar numge=0;

void anjian_dis()
{
numshi=anjian/10;
numge=anjian%10;
write_12864_data(0x30+numshi);
write_12864_data(0x30+numge);
}
void delayms(unsigned int xms)
{
unsigned int i,j;
for(i=0;i<xms;i++)
for(j=0;j<110;j++);
}

void keyscan_1()
{
unsigned char dat=0;
unsigned char num=0;
P1=0xfe;
dat=P1;
dat=dat&0xf0;
while(dat!=0xf0)
{
delayms(10);
dat=P1;
dat=dat&0xf0;
while(dat!=0xf0)
{
dat=P1;
switch(dat)
{
case 0xee:num=1;
break;
case 0xde:num=2;
break;
case 0xbe:num=3;
break;
case 0x7e:num=4;
break;
}
while(dat!=0xf0)
{
dat=P1;
dat=dat&0xf0;
}

}
}

P1=0xfd;
dat=P1;
dat=dat&0xf0;
while(dat!=0xf0)
{
delayms(10);
dat=P1;
dat=dat&0xf0;
while(dat!=0xf0)
{
dat=P1;
switch(dat)
{
case 0xed:num=5;
break;
case 0xdd:num=6;
break;
case 0xbd:num=7;
break;
case 0x7d:num=8;
break;
}
while(dat!=0xf0)
{
dat=P1;
dat=dat&0xf0;
}

}
}

P1=0xfb;
dat=P1;
dat=dat&0xf0;
while(dat!=0xf0)
{
delayms(10);
dat=P1;
dat=dat&0xf0;
while(dat!=0xf0)
{
dat=P1;
switch(dat)
{
case 0xeb:num=9;
break;
case 0xdb:num=10;
break;
case 0xbb:num=11;
break;
case 0x7b:num=12;
break;
}
while(dat!=0xf0)
{
dat=P1;
dat=dat&0xf0;
}

}
}

P1=0xf7;
dat=P1;
dat=dat&0xf0;
while(dat!=0xf0)
{
delayms(10);
dat=P1;
dat=dat&0xf0;
while(dat!=0xf0)
{
dat=P1;
switch(dat)
{
case 0xe7:num=13;
break;
case 0xd7:num=14;
break;
case 0xb7:num=15;
break;
case 0x77:num=16;
break;
}
while(dat!=0xf0)
{
dat=P1;
dat=dat&0xf0;
}

}
}

switch(num)
{
case 1:write_12864_addr(1,3);
anjian=0;
pwm=0;
anjian_dis();
break;
case 2:write_12864_addr(1,3);
anjian=10;
pwm=100;
anjian_dis();
break;
case 3:write_12864_addr(1,3);
anjian=20;
pwm=20;
anjian_dis();
break;
case 4:write_12864_addr(1,3);
anjian=30;
pwm=30;
anjian_dis();
break;
case 5:write_12864_addr(1,3);
anjian=40;
pwm=40;
anjian_dis();
break;
case 6:write_12864_addr(1,3);
anjian=50;
pwm=50;
anjian_dis();
break;
case 7:write_12864_addr(1,3);
anjian=60;
pwm=60;
anjian_dis();
break;
case 13:pwm=pwm+5;
break;
case 14:pwm=pwm-5;
break;
case 15:pwm=pwm+1;
break;
case 16:pwm=pwm-1;
break;
default:break;
}

}

void timer0() interrupt 3
{
TH1=(65535-1000)/256;
TL1=(65535-1000)%256;
count++;
if(count>=100)
count=0;
if(count<=pwm)
{
ENA=1;
A1=0;
A2=1;
}
else
{
ENA=0;
A1=0;
A2=1;
}
TR1=1;

}

作者: tututututu 时间: 2017-11-19 15:34
把中断里的判断拿出来试试

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