int ledverde = 23;
int ledamarelo = 22;
int ledvermelho = 21;
int ldr = 4;
int led4 = 19;

void setup() {
  Serial.begin(9600);
pinMode(ledverde, OUTPUT);
pinMode(ledamarelo, OUTPUT);
pinMode(ledvermelho, OUTPUT);
pinMode(led4, OUTPUT);
pinMode(ldr, INPUT);
Serial.println("iniciando o gerenciador de tarefas FreeRTOS");
xTaskCreate(
  TarefaSemaforo,
  "Semafaro",
  10000,
  NULL,
  1,
  NULL
);

xTaskCreate(
  TarefaLDRLed,
  "LDR_LED",
  10000,
  NULL,
  1,
  NULL
);

}

void loop() {
  vTaskDelay(pdMS_TO_TICKS(1000));
}
void TarefaSemaforo(void *parametros){
  Serial.println("Tarefa semáfaro iniciada");
  while(true){
    digitalWrite(ledverde, HIGH);
    digitalWrite(ledamarelo, LOW);
    digitalWrite(ledvermelho, LOW);
    vTaskDelay(pdMS_TO_TICKS(5000));

    digitalWrite(ledverde, LOW);
    digitalWrite(ledamarelo, HIGH);
    digitalWrite(ledvermelho, LOW);
    vTaskDelay(pdMS_TO_TICKS(2000));

    digitalWrite(ledverde, LOW);
    digitalWrite(ledamarelo, LOW);
    digitalWrite(ledvermelho, HIGH);
    vTaskDelay(pdMS_TO_TICKS(4000));
  }
}

void TarefaLDRLed(void *parametros){
  Serial.println("Tarefa LDR/LED iniciada");
  while(true){
    int valorLDR = analogRead(ldr);
    Serial.println("ValorLDR: ");
      Serial.println(ValorLDR);
      if(valorldr < 1500){
  digitalWrite(led4, HIGH);
  }
  vTaskDelay(pdMS_TO_TICKS(500));
}