pwm.py

import sys
import tkinter
import wiringpi

LED_GPIO = 26
PWM_MAX = 100

class Led:
    def __init__(self):
        self.isEnabled = False
        self.brightness = 0
    
    def initialize(self):
        wiringpi.wiringPiSetupGpio()
        wiringpi.pinMode(LED_GPIO, 1)
    
    def startPwm(self):
        wiringpi.softPwmCreate(LED_GPIO, self.brightness, PWM_MAX)
    
    def flushPwm(self):
        wiringpi.softPwmWrite(LED_GPIO, self.brightness)
    
    def stopPwm(self):
        wiringpi.softPwmStop(LED_GPIO)
        
    def setEnabled(self, isEnabled):
        if self.isEnabled == False and isEnabled == True:
            self.startPwm()
        elif self.isEnabled == True and isEnabled == False:
            self.stopPwm()
        self.isEnabled = isEnabled
    
    def setBrightness(self, brightness):
        self.brightness = brightness
        if self.isEnabled == True:
            self.flushPwm()
        
class App:
    def __init__(self):
        self.led = Led()
        self.led.initialize()
        self.window = tkinter.Tk()
        
    def onRadioVarChanged(self):
        self.led.setEnabled(self.radioVar.get())
    
    def onScaleVarChanged(self, value):
        self.led.setBrightness(self.scaleVar.get())

    def initializeLabel(self):
        label = tkinter.Label(self.window, text = "LEDスイッチ")
        label.grid(row = 0, columnspan = 2)
    
    def initializeRadiobutton(self, text, value):
        return tkinter.Radiobutton(
            self.window,
            text = text,
            variable = self.radioVar,
            value = value,
            command = self.onRadioVarChanged
        )
    
    def initializeRadiobuttons(self):
        self.radioVar = tkinter.BooleanVar()
        self.initializeRadiobutton("OFF", False).grid(row = 1, column = 0)
        self.initializeRadiobutton("ON", True).grid(row = 1, column = 1)
        
    def initializeScale(self):
        self.scaleVar = tkinter.IntVar()
        tkinter.Scale(
            self.window,
            label = "明るさ",
            orient = "h",
            from_ = 0,
            to = 100,
            variable = self.scaleVar,
            command = self.onScaleVarChanged
        ).grid(row = 2, columnspan = 2)
    
    def initializeButton(self):
        tkinter.Button(
            self.window,
            text = "終了",
            command = sys.exit
        ).grid(row = 3, columnspan = 2)
    
    def initialize(self):
        self.initializeLabel()
        self.initializeRadiobuttons()
        self.initializeScale()
        self.initializeButton()
    
    def show(self):
        self.window.mainloop()
    
    def main(self):
        self.initialize()
        self.show()

if __name__ == "__main__":
    App().main()