softpwm.ino

#include <SoftPWM.h>

void setup() {
   SoftPWMBegin();
   SoftPWMSet(A0, 0);

}

void loop() {
  int i = 0;
  while(i<255)
  {
    SoftPWMSet(A0, i);
    i++;
    delay(3);
  }
  i = 255;
  while(i>0)
  {
   SoftPWMSet(A0, i);
   i--;
   delay(3);
  } 
}