int pwm = D7;
int i = 0;

// the setup funtion runs once when you press reset and or power the board
void setup() {
  //Define Pin
  #define pwm = D7 // PWM on pin D7
  
  pinMode(pmw,OUTPUT);//set pin D7 as an OUTPUT
}

// the loop funtion runs over and over again forever
void loop() {
  for (i=0; i<= 200; i++) {
    analogWrite(pmw, i);
    analogWrite(5, 200 - i);
    delay(35);
  }
  for (i=200; i>= 0; i--) {
    analogWritepmw, i);
    analogWrite(5, 200 - i);
    delay(30);
  }
}