int led[7] = {25, 26, 27, 14, 12, 13, 4};
byte matrix[10] = {0x7e, 0x30, 0x6d, 0x79, 0x33, 0, 0, 0, 0, 0};

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  int i;
  for (i = 0; i < 7; i++)
    pinMode(led[i], OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:

  for (int c = 0 ; c < 5; c++ ) { // 產生 0-5
    byte l = matrix[c]; 
    for (int i = 0; i < 7; i++ ) { // 送到 7 段
      if ((l & 0x40) == 0x40) {
        digitalWrite(led[i], LOW);
      } else {
        digitalWrite(led[i], HIGH);
      }
      l <<= 1;
    }
    delay(500); // this speeds up the simulation
  }

}

void m0() {
  digitalWrite(led[0], HIGH);
  digitalWrite(led[1], HIGH);
  digitalWrite(led[2], HIGH);
  digitalWrite(led[3], HIGH);
  digitalWrite(led[4], HIGH);
  digitalWrite(led[5], HIGH);
  digitalWrite(led[6], LOW);
  Serial.println("Hello, 0");
}

void m1() {
  digitalWrite(led[0], LOW);
  digitalWrite(led[1], HIGH);
  digitalWrite(led[2], HIGH);
  digitalWrite(led[3], LOW);
  digitalWrite(led[4], LOW);
  digitalWrite(led[5], LOW);
  digitalWrite(led[6], LOW);
  Serial.println("Hello, 1");
}