buttons.py

import time
import RPi.GPIO as GPIO
from threading import Thread
from threading import Lock
GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)

class HumidifierController:

    fan_button = 24
    led_button = 27
    fan_out = 23
    led_out = 22


    def __init__(self):

        self.fan_button = 24
        self.led_button = 27
        self.fan_out = 23
        self.led_out = 22
        self.lock = Lock()
        self.thread = Thread(target=self.run)
        self.virtual_operation = None
        self.virtual_operation_done = False
        self.operation_time_started = None
        self.is_fan_on = False
        self.is_led_on = False

        GPIO.setup(self.led_button, GPIO.IN, GPIO.PUD_UP)
        GPIO.setup(self.fan_button, GPIO.IN, GPIO.PUD_UP)
        GPIO.setup(self.fan_out, GPIO.OUT)
        GPIO.setup(self.led_out, GPIO.OUT)

        self.thread.start()

        print('turning on led')
        self.led_on()
        time.sleep(4)
        print('turning off led')
        self.led_off()

    def run(self):

        try:
            while True:
                operation = self.virtual_operation
                print(f'operation = {operation}')

                if operation is not None:
                    print(f'operation = {operation}')
                    self.virtual_operation_done = False

                    if operation == 'led_off':
                        if self.operation_time_started == None:
                            self.operation_time_started = time.time()
                            GPIO.output(self.led_out, GPIO.LOW)
                        else:
                            elapsed_time = time.time() - self.operation_time_started
                            print(f'operation elapsed time: {elapsed_time}')
                            if elapsed_time >= 3:
                                GPIO.output(self.led_out, GPIO.HIGH)
                                self.operation_time_started = None
                                self.virtual_operation_done = True


                    if operation == 'led_on':
                        if self.operation_time_started == None:
                            self.operation_time_started = time.time()
                            GPIO.output(self.led_out, GPIO.LOW)
                        else:
                            elapsed_time = time.time() - self.operation_time_started
                            print(f'operation elapsed time: {elapsed_time}')
                            if elapsed_time >= 1:
                                GPIO.output(self.led_out, GPIO.HIGH)
                                self.operation_time_started = None
                                self.virtual_operation_done = True


                    if operation == 'fan_off':
                        if self.operation_time_started == None:
                            self.operation_time_started = time.time()
                            GPIO.output(self.led_out, GPIO.LOW)
                        else:
                            elapsed_time = time.time() - self.operation_time_started
                            if elapsed_time >= 1:
                                GPIO.output(self.led_out, GPIO.HIGH)
                                self.operation_time_started = None
                                self.virtual_operation_done = True


                    if operation == 'fan_on':
                        if self.operation_time_started == None:
                            self.operation_time_started = time.time()
                            GPIO.output(self.led_out, GPIO.LOW)
                        else:
                            elapsed_time = time.time() - self.operation_time_started
                            if elapsed_time >= 1:
                                GPIO.output(self.led_out, GPIO.HIGH)
                                self.operation_time_started = None
                                self.virtual_operation_done = True


                else:
                   led_state = GPIO.input(self.led_button)
                   fan_state = GPIO.input(self.fan_button)
                   GPIO.output(self.led_out, led_state)
                   GPIO.output(self.fan_out, fan_state)


                time.sleep(0.1)

        except Exception as e:
            print(e)

        finally:
            GPIO.cleanup()


    def run_operation(self, operation):
        print('LOCKING')
        with self.lock:
            self.virtual_operation = operation
            while not self.virtual_operation_done:
                print('still running operation')
                continue
            self.virtual_operation = None


    def led_on(self):
        self.run_operation('led_on')

    def led_off(self):
        self.run_operation('led_off')

    def fan_on(self):
        self.run_operation('fan_on')

    def fan_off(self):
        self.run_operation('fan_off')



if __name__ == "__main__":
    controller = HumidifierController()