#!/usr/bin/python3

import RPi.GPIO as GPIO
import time
import subprocess

GPIO.setmode(GPIO.BCM)
GPIO.setup(14, GPIO.OUT)

pwm = GPIO.PWM(14, 100)

# print("\nPress Ctrl+C to quit \n")

dc = 0

pwm.start(dc)

try:
    while True:
        temp = subprocess.getoutput("vcgencmd measure_temp|sed 's/[^0-9.]//g'")
        print("CPU Temp: ",float(temp))
        if round(float(temp)) >= 45:
            dc = 100
            pwm.ChangeDutyCycle(dc)
            time.sleep(180)

        if round(float(temp)) >= 40:
            dc = 85
            pwm.ChangeDutyCycle(dc)
            time.sleep(120)
        else:
            dc = 70
            pwm.ChangeDutyCycle(dc)
            time.sleep(60)

except KeyboardInterrupt:
    pwm.stop()
    GPIO.cleanup()