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#include <wiringPi.h>
#include <softPwm.h>
 
int main (void)
{
  //wiringPiSetup () ;
  wiringPiSetupGpio();
  //pinMode(2,OUTPUT);
  //digitalWrite(18,LOW);
  //pinMode (2, PWM_OUTPUT ) ;
  softPwmCreate(2, 100, 100);
  //softPwmCreate (21, 0, 1024) ;
  for (int i=0;i<100;i++)
  {
    //pwmWrite(2, i) ;
    softPwmWrite (2, i);
    delay (20) ;
    //digitalWrite (21,  LOW) ; delay (500) ;
  }
  return 0 ;
}