Mikro

byte hexadecimalNumbers[16][7] = { { 0,0,0,0,0,0,1},  // = 0
                                  { 1,0,0,1,1,1,1 },  // = 1
                                  { 0,0,1,0,0,1,0 },  // = 2
                                  { 0,0,0,0,1,1,0 },  // = 3
                                  { 1,0,0,1,1,0,0 },  // = 4
                                  { 0,1,0,0,1,0,0 },  // = 5
                                  { 0,1,0,0,0,0,0 },  // = 6
                                  { 0,0,0,1,1,1,1 },  // = 7
                                  { 0,0,0,0,0,0,0 },  // = 8
                                  { 0,0,0,1,1,0,0 },  // = 9
                                  { 0,0,0,1,0,0,0 },  // = A
                                  { 0,0,0,0,0,0,0 },  // = B
                                  { 0,1,1,0,0,0,1 },  // = C
                                  { 0,0,0,0,0,0,1 },  // = D
                                  { 0,1,1,0,0,0,0 },  // = E
                                  { 0,1,1,1,0,0,0 }   // = F
};

void setup() {
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(7, OUTPUT);
  pinMode(8, OUTPUT);

  pinMode(9, OUTPUT);
  pinMode(10, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(12, OUTPUT);
  digitalWrite(9, LOW);
  digitalWrite(10, LOW);
  digitalWrite(11, LOW);
  digitalWrite(12, LOW);
  Serial.begin(9600);
}

void sevenSegWrite(byte digit) {
  byte pin = 2;
  for (byte segCount = 0; segCount < 7; ++segCount) {
    digitalWrite(pin, hexadecimalNumbers[digit][segCount]);
    ++pin;
  }
}

void checkIfCorrectCommand(char firstCharacter){
  if(firstCharacter == "T"){
    numbersToDisplay();
  }
  else if(firstCharacter == "D"){
    timeOfDisplaying();
  }
  else if(firstCharacter == "B"){
    brightnessOfSegments();
  }
  else{
    Serial.println("Unknown command");
  }
}

void numbersToDisplay(){
  String numbersSequence = Serial.readString();
  if(numbersSequence.length() == 6){
    char characterToTest;
    for(int i = 0; i<6; i++){
      characterToTest = numbersSequence.charAt(i);
      if((characterToTest>='a' && characterToTest<='f') ||
        (characterToTest>='A' && characterToTest<='F') ||
        (characterToTest>='0' && characterToTest<='9')){
          //TO DO
        }
      else{
        Serial.println("Wrong sequence of characters");
      }
    }
  }
}

void timeOfDisplaying(){
  String time = Serial.readString();
  if(time.length() == 4){
    char characterToTest;
    for(int i = 0; i<4; i++){
      characterToTest = time.charAt(i);
      if((characterToTest>='0' && characterToTest<='9' && i!=0)
      || (characterToTest>='1' && characterToTest<='9' && i==0)){
          //TO DO
      }
      else{
        Serial.println("Wrong sequence of characters");
      }
    }
  }
  else{
    Serial.println("Too few characters");
  }
}

void brightnessOfSegments(){
  String brightness = Serial.readString();
  if(brightness.length() == 4){
    char characterToTest;
    for(int i = 0; i<4; i++){
      characterToTest = brightness.charAt(i);
      if(characterToTest>='0' && characterToTest<='2'){
          //TO DO
      }
      else{
        Serial.println("Wrong sequence of characters");
      }
    }
  }
  else{
    Serial.println("Too few characters");
  }
}

void loop() {
  if(Serial.available() > 0){
    for(int i=15; i>=0; i--){
      delay(1000);
      sevenSegWrite(i);
    }
  }
}