/*题目：
当按钮按下时，LED会闪烁两次，
整体步骤时长和亮度🔆可以用可以调电阻控制*/

int brightness;
int delayTime;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(11, OUTPUT);
  pinMode(12, INPUT_PULLUP);
  pinMode(A0, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  if (digitalRead(12) == 0) {
    getDelay();
    getBrightness();
    Serial.print("LED delay = " + String(delayTime) + "ms LED Brightness = " + String(brightness) + "\n");
    blink();
  }
}

void blink() {
  analogWrite(11, brightness);
  delay(delayTime);
  analogWrite(11, 0);
  delay(delayTime);
  analogWrite(11, brightness);
  delay(delayTime);
  analogWrite(11, 0);
}

void getDelay() {
  int value = analogRead(A0);
  delayTime = map(value, 0, 1023, 500, 2000);
}

void getBrightness() {
  int value = analogRead(A0);
  brightness = map(value, 0, 1023, 10, 255);
}