#define DHTPIN 2

#define PIN_RED 3
#define PIN_YELLOW 5
#define PIN_GREEN 6

int thermoPins[] = {7, 8, 9, 10, 11, 12, 13};
int thermoCount = 7;
int tempStep = 5;
int minTemp = 0;
int maxTemp = 35;

byte data[5];
float temperature = 0;
float humidity = 0;
unsigned long lastReadTime = 0;

void setup() {
  Serial.begin(9600);

  pinMode(PIN_RED, OUTPUT);
  pinMode(PIN_YELLOW, OUTPUT);
  pinMode(PIN_GREEN, OUTPUT);
  
  for (int i = 0; i < thermoCount; i++) {
    pinMode(thermoPins[i], OUTPUT);
  }

  turnOffHumidityLEDs();
  turnOffThermoLEDs();
}

void loop() {
  if (millis() - lastReadTime > 2000) {
    if (readDHT22()) {
      Serial.print("Влажность: ");
      Serial.print(humidity);
      Serial.print("% | Температура: ");
      Serial.print(temperature);
      Serial.println("°C");

      controlHumidityLEDs(humidity);

      controlThermoLEDs(temperature);
    } else {
      Serial.println("Ошибка чтения с датчика DHT!");
    }
    
    lastReadTime = millis();
  }
}

bool readDHT22() {
  memset(data, 0, sizeof(data));
  pinMode(DHTPIN, OUTPUT);
  digitalWrite(DHTPIN, LOW);
  delay(2);
  digitalWrite(DHTPIN, HIGH);
  delayMicroseconds(40);
  pinMode(DHTPIN, INPUT_PULLUP);

  unsigned long timeout = micros() + 1000;
  while (digitalRead(DHTPIN) == HIGH) {
    if (micros() > timeout) return false;
  }
  
  timeout = micros() + 1000;
  while (digitalRead(DHTPIN) == LOW) {
    if (micros() > timeout) return false;
  }
  
  timeout = micros() + 1000;
  while (digitalRead(DHTPIN) == HIGH) {
    if (micros() > timeout) return false;
  }

  for (int i = 0; i < 40; i++) {
    timeout = micros() + 1000;
    while (digitalRead(DHTPIN) == LOW) {
      if (micros() > timeout) return false;
    }
    
    unsigned long t = micros();
    
    timeout = micros() + 1000;
    while (digitalRead(DHTPIN) == HIGH) {
      if (micros() > timeout) return false;
    }
    
    if ((micros() - t) > 40) {
      data[i / 8] |= (1 << (7 - (i % 8)));
    }
  }
  byte checksum = data[0] + data[1] + data[2] + data[3];
  if (data[4] != checksum) return false;
  
  humidity = word(data[0], data[1]) * 0.1;
  
  int16_t temp = word(data[2] & 0x7F, data[3]);
  temperature = temp * 0.1;
  if (data[2] & 0x80) {
    temperature = -temperature;
  }
  
  return true;
}

void controlHumidityLEDs(float humidity) {
  turnOffHumidityLEDs();
  
  if (humidity < 25) {
    digitalWrite(PIN_RED, HIGH);
  } else if (humidity < 50) {
    digitalWrite(PIN_YELLOW, HIGH);
  } else {
    digitalWrite(PIN_GREEN, HIGH);
  }
}

void turnOffHumidityLEDs() {
  digitalWrite(PIN_RED, LOW);
  digitalWrite(PIN_YELLOW, LOW);
  digitalWrite(PIN_GREEN, LOW);
}

void controlThermoLEDs(float temperature) {
  controlThermoLEDs();
}