Raspberry Pi Forums

Code: Select all

#!/usr/bin/env python3

import os
from time import sleep
import signal
import sys
import RPi.GPIO as GPIO
pin1 = 18
led1 = 23
maxTMP = 60
minTMP = 40

def setup():
    GPIO.setmode(GPIO.BCM)
    GPIO.setup(pin1, GPIO.OUT)
    GPIO.setup(led1, GPIO.OUT)
    GPIO.setwarnings(False)
    GPIO.output(led1, GPIO.HIGH)
    return()
    
def getCPUtemperature():
    res = os.popen('vcgencmd measure_temp').readline()
    temp =(res.replace("temp=","").replace("'C\n",""))
   # print("temp is {0}".format(temp))
    return temp
    
def getTEMP():
    CPU_temp = float(getCPUtemperature())
    if CPU_temp>maxTMP:
        setPin1(True)
    elif CPU_temp<minTMP:
        setPin1(False)
    return()

def setPin1(mode):
    GPIO.output(pin1, mode)
    return()
    
try:
    setup()
    while True:
        getTEMP()
        sleep(5)
        
except KeyboardInterrupt:
    GPIO.cleanup()

Code: Select all

#!/usr/bin/python3

from gpiozero import Button
from signal import pause
from subprocess import check_call
off1 = 3

held_for=0.0

def rls():
        global held_for
        if (held_for > 5.0):
                check_call(['/sbin/poweroff'])
        elif (held_for > 2.0):
                check_call(['/sbin/reboot'])
        else:
                held_for = 0.0

def hld():
        global held_for
        held_for = max(held_for, button.held_time + button.hold_time)

button=Button(off1, hold_time=1.0, hold_repeat=True)
button.when_held = hld
button.when_released = rls
pause()

Code: Select all

Turn on led

while true
         If temp > threshold
               turn on fans
         if temp < normal
               turn off fans
         if reset = pressed
                reboot system
         sleep 5 seconds

Code: Select all

Turn on led
time0, time1= now
while true
        if reset = pressed
                reboot system
         if time1-time0 =0
               	If temp > threshold
               		turn on fans
         	if temp < normal
               		turn off fans
        time1= now
        if time1 >= time0 +5seconds
        	time0,time1=now       		
      
         

Code: Select all

Turn on led
time0, time1= now
ButtonStartTime =0
ButtonStopTime =0
ButtonTimerFlag=0   # 3 states 0 waiting, 1 testing , 2 awaiting resolution
while true
        if (reset = pressed ) AND (ButtonTimerFlag = 0)	
		ButtonTimerFlag =1
		ButtonStartTime= now
	elseif (reset = NOT pressed ) AND (ButtonTimerFlag = 1)
		ButtonStopTime = now		                
		ButtonTimerFlag =2

	if ButtonTimerflag=2
		ButtonTimerflag=0
		if ButtonStopTime>= buttonstarttime 5seconds
			system shutdown
		elseif ButtonStopTime>= buttonstarttime 2seconds
			system reboot

         if time1-time0 =0
               	If temp > threshold
               		turn on fans
         	if temp < normal
               		turn off fans
        time1= now
        if time1 >= time0 +5seconds
        	time0,time1=now