Epsidoe32.ino

#define led_pin 11
void analog(int pin,float dig)
{
  int an=dig*51;
  analogWrite(pin,an);
}
float atod(float Dig)
{
  float res=51*Dig;
  return res;
}
void light (int pin,int Time)
{
  int i;
  for(i=0;i<153;i++)
  {
    delay(Time);
    analogWrite(pin,i);
  }
  for(  ;i>=0;i--)
  {
    delay(Time);
    analogWrite(pin,i);
  }
}
void setup() {
  pinMode(led_pin,OUTPUT);

}

void loop() {
  light (led_pin,6);
}