#define LED1_PIN PA5
#define LED2_PIN PA6
#define LED3_PIN PA7
#define LED4_PIN PB6
#define LED5_PIN PB7

int leds[] = {LED1_PIN, LED2_PIN, LED3_PIN, LED4_PIN, LED5_PIN};
const int NUM_LEDS = 5;

#define LED_TIME 200

void setup() {
  for (int i = 0; i < NUM_LEDS; i++) {
    pinMode(leds[i], OUTPUT);
    digitalWrite(leds[i], LOW);  
  }
}

void loop() {

  for (int i = 0; i < NUM_LEDS; i++) {
    digitalWrite(leds[i], HIGH);
    delay(LED_TIME);
    digitalWrite(leds[i], LOW);
  }
}