Processing × スクーミー ③～画面のボタンでLEDを操作～【Python】

int ledPin = 10;            

void setup() {
  Serial.begin(9600);
  pinMode(ledPin, OUTPUT);
  }

void loop() {
  if(Serial.available() > 0){
    char val = Serial.read();

    if(val == 'h'){
      digitalWrite(ledPin, HIGH);
    }else if(val == 'l'){
      digitalWrite(ledPin, LOW);
    }
  }
}

add_library('serial')

myPort = None
available_serialport = 2
arduinoPort = Serial.list()[available_serialport]
sensingValue = 0

class PBtn:
    def __init__(self, xpos, ypos, wb, hb):
        self.x = xpos
        self.y = ypos
        self.w = wb
        self.h = hb

    def display(self, stat):
        if stat == 0:
            col_top = 230
            col_right = 100
            col_bottom = 80
            col_left = 210
        else:
            col_top = 80
            col_right = 210
            col_bottom = 230
            col_left = 100

        fill(255, 255, 0)
        rect(self.x, self.y, self.w, self.h)
        fill(col_top)
        quad(self.x - 10, self.y - 10, self.x + self.w + 10, self.y - 10, 
             self.x + self.w, self.y, self.x, self.y)
        fill(col_right)
        quad(self.x + self.w, self.y, self.x + self.w + 10, self.y - 10, 
             self.x + self.w + 10, self.y + self.h + 10, self.x + self.w, self.y + self.h)
        fill(col_bottom)
        quad(self.x, self.y + self.h, self.x + self.w, self.y + self.h, self.x + self.w + 10, self.y + self.h + 10, self.x - 10, self.y + self.h + 10)
        fill(col_left)
        quad(self.x - 10, self.y - 10, self.x, self.y, self.x, self.y + self.h, self.x - 10, self.y + self.h + 10)

        textSize(24)
        fill(0)
        text("PUSH", self.x + 15, self.y + self.h + 60)
        text("LED OFF", self.x, self.y + self.h + 80)

    def areachk(self):
        if mouseX > self.x and mouseX < self.x + self.w and mouseY > self.y and mouseY < self.y + self.h:
            return 1
        else:
            return 0

btn = PBtn(50, 50, 100, 50)

def setup():
    global myPort
    size(200, 200)
    noStroke()
    frameRate(10)
    myPort = Serial(this, arduinoPort, 9600)
    btn.display(0)

def draw():
    pass

def mousePressed():
    if btn.areachk() == 1:
        btn.display(1)
        myPort.write('h')

def mouseReleased():
    if btn.areachk() == 1:
        btn.display(0)
        myPort.write('l')