const byte KEY = 27;
SemaphoreHandle_t xSemaphore;

void vTaskKey(void *pvParam){
  pinMode(KEY, INPUT_PULLUP);
  bool key_status = false;
  uint32_t key_during = 0;
  while(1){
    if((digitalRead(KEY) == LOW) && (key_status == false)){
      vTaskDelay(pdMS_TO_TICKS(10));
      if(digitalRead(KEY) == LOW){
        key_status = true;
        key_during = micros();
        Serial.println("KEY DOWN!");
      }      
    }
    if((digitalRead(KEY) == LOW) && (key_status == true)){
      if(micros() - key_during > 1000000){
        key_during = micros();
        Serial.println("KEY LONG PRESSED!");
      }
    }
    if(digitalRead(KEY) == HIGH) {
      if(key_status == true){
        Serial.println("KEY UP!");
        xSemaphoreGive(xSemaphore);
      }
      key_status = false;
    }
  }
}

void vTaskDisplay(void *pvParam){
  while(1){
    if(xSemaphoreTake(xSemaphore, 1000) == pdPASS){
      Serial.println("Test OK!");
    }
  }
}
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  xSemaphore = xSemaphoreCreateBinary();
  if(xSemaphore != NULL){
    xTaskCreate(vTaskKey,"KEY", 1024, NULL, 1, NULL);
    xTaskCreate(vTaskDisplay,"DIS", 1024 *4, NULL , 1, NULL);
  }
  vTaskDelete(NULL);
  
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
}