//
//PWM控制LED
//
#include <iostream>
#include <wiringPi.h>
#include <softPwm.h>
using namespace std;
const int led = 1;// GPIO1
int main (void) {
if ( wiringPiSetup ()==-1)//设定WiringPi
return 0;
softPwmCreate( led, 0,100 );//设定软醋 PWM值介於0~100之間
while ( 1 ){
int val;
for ( val = 0 ; val <= 100 ; val++){//从暗樊亮
softPwmWrite( led, val );
delay( 20 );
}
for ( val = 100 ; val >= 0 ; val--){//徙亮燮暗
softPwmWrite( led, val );
delay( 20 );
}
}
return 1;
}