pwm.c.120731134740

atmega128串行操作lcd12864

#include<iom128v.h>
#define uint unsigned int
uint pwm1=500,pwm2=500;
void int_io(void)
{
TCCR1A=0XFF;//三通道
TCCR1B=0X0A;//8分频   0x09不分频
TCNT1=0X0000;
TIMSK=0X00;
ETIMSK=0X00;
DDRB=0XFF;
OCR1A=500;;
OCR1B=500;
}
void main(void)
{
DDRD=0X00;
PORTD=0XFF;
int_io();
while(1)
{
if(PIND==0XFE)
{
pwm1-=100;
}
if(PIND==0XFD)
{
pwm2-=100;
}
if(PIND==0XFB)
{
pwm1+=100;
}
if(PIND==0XF7)
{
pwm2+=100;
}
}
}