调试，mega88,三个触摸键，逻辑出错
问题如下：三个触摸键，下载了该程序，三个键，触摸有效，但很快就乱了，我是用一个IO脚PC2连接LED灯看效果，一段时间后LED快速闪个不停，那时候触摸又失效了
源程序如下：
#ifndef _QTOUCH_
#define _QTOUCH_
#define QT_NUM_CHANNELS 8
#define QT_MAX_NUM_ROTORS_SLIDERS 2
#define _ROTOR_SLIDER_
#define SNSK B //B
#define SNSD //D
#define QT_DELAY_CYCLES 1 //10
//_QTOUCH_
#endif
#include<avr\io.h>
#include<avr\interrupt.h>
#include<touch_api.h>
#include"_QTOUCH_.h"
//unsigned char key_test_flag1=0;
//unsigned char key_test_flag2=0;
unsigned int hw_time_ms;
volatile unsigned char qt_measure_flag;//检测标志，全局变量
volatile qt_touch_status_t qt_touch_status;
//unsigned char test_time;
void delay(unsigned char m)
{
static unsigned char i,j,k;
for(i=0;i<m;i++)
{
for(j=0;j<200;j++)
{
for(k=0;k<200;k++);
}
}
}
SIGNAL(SIG_OVERFLOW1)
{
TCNT1H=0xFF;
TCNT1L=0xaa;//0x83
hw_time_ms++;
qt_measure_flag=1;
// test_time++;
}
void port_init(void)
{
MCUCR|=(1<<PUD);
DDRC=0xFF;
PORTC=0xFF;
// PORTC&=~(1<<PC0);
// PORTC&=~(1<<PC1);
// PORTC&=~(1<<PC5);
PORTC&=~(1<<PC2);
}
void timer1_init(void)
{
TCNT1H=0xFF;
TCNT1L=0xaa;//0x83
TCCR1B|=(1<<CS11)|(1<<CS10);
}
void int_ctrl(void)
{
sei();
TIMSK1|=(1<<TOIE1);
}
void sys_init(void)
{
port_init();
timer1_init();
int_ctrl();
hw_time_ms=0;
}
void channel_1()
{
if(qt_measure_data.qt_touch_status.sensor_states&0x01)
{
PORTC|=(1<<PC2);
//PORTC|=(1<<PC0);
}
}
void channel_2()
{
if(qt_measure_data.qt_touch_status.sensor_states&0x02)
{
PORTC&=~(1<<PC2);
//PORTC|=(1<<PC2);
//PORTC|=(1<<PC1);
}
}
void channel_3()
{
if(qt_measure_data.qt_touch_status.sensor_states&0x04)
{
PORTC&=~(1<<PC2);
//PORTC|=(1<<PC2);
//PORTC|=(1<<PC5);
}
}
int main(void)
{
sys_init();
qt_reset_sensing();
qt_enable_key(CHANNEL_0, NO_AKS_GROUP, 10, HYST_25);
// qt_enable_key(CHANNEL_2, AKS_GROUP_1, RECAL_12_5, HYST_6_25);
qt_enable_key(CHANNEL_4, NO_AKS_GROUP, 10, HYST_25);
qt_enable_key(CHANNEL_2, NO_AKS_GROUP, 10, HYST_25);//HYST_25
qt_init_sensing();
while(1)
{
if(qt_measure_flag)
{
qt_measure_flag=0;
qt_measure_sensors(hw_time_ms);
//hw_time_ms=0;
channel_1();
channel_2();
channel_3();
//delay(100);
}
}
} 今天调试，3.3V比较正常，5V的情况下，极其不稳定，不知道原因 什么原理里，电容式的？ 用的是AVR哪一款的单片机的？
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