bool ledstate = 1;
const int ledpin = 27;

void setup() {

    Serial.begin(115200);

    UBaseType_t uTaskPriority = uxTaskPriorityGet(NULL);
    Serial.print("setup优先级:");
    Serial.println(uTaskPriority);

    pinMode(ledpin, OUTPUT);
    digitalWrite(ledpin, HIGH);

}

void loop() {
  // put your main code here, to run repeatedly:
//   ledstate = !ledstate;
  digitalWrite(ledpin, ledstate);
  delay(500); // this speeds up the simulation

  UBaseType_t uTaskPriority = uxTaskPriorityGet(NULL);
  Serial.print("loop优先级:");
  Serial.println(uTaskPriority);
}