#define PIN_A 22
#define PIN_B 23
#define PIN_C 4
#define PIN_D 17
#define PIN_E 18
#define PIN_F 21
#define PIN_G 19

#define PINES_TOTAL 7

uint8_t pines[PINES_TOTAL] = {
  PIN_A, // A
  PIN_B, // B
  PIN_C,  // C
  PIN_D, // D
  PIN_E, // E
  PIN_F, // F
  PIN_G // G
};

char segmentos[PINES_TOTAL] = {
  'A',
  'B',
  'C',
  'D',
  'E',
  'F',
  'G',
}

void setup() {
  Serial.begin(9600);
  for(uint8_t segment = 0; segment < PINES_TOTAL; segment++) {
    pinMode(pines[segment], OUTPUT); 
  }
}

void loop() {
  char msg[30];
  
  for(uint8_t segment = 0; segment < PINES_TOTAL; segment++) {
    snprintf(msg, 30, "Segmento encendido: %c\n", segmentos[segmento];
    Serial.println(msg);
    digitalWrite(pines[segment], HIGH);
    delay(700);
    digitalWrite(pines[segment], LOW);
    snprintf(msg, 30, "Segmento apagado: %c\n", segmentos[segmento];
    Serial.println(msg);
    delay(700);
  } 
}