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1 Button to Start, Shutdown or Shutdown after 60 minutes

Former Member

Hello and thanks for reading my question!

 

I am building a simple Pi-based nightstand radio for my elderly mother, she likes to listen at night when she can't sleep.

It works now, it boots and automatically begins playing a radio stream from her favorite radio stations's website.

That's ALL she wants it to do and it does it well.

 

What I want to add is a single button, if possible, that serves 3 functions:

 

1-second button press = Pi boots up

3-second button press = Pi shuts down

6-second button press = Pi waits 60 minutes, then shuts down

 

Is this possible with just 1 button? I'd like to keep it to 1 button for simplicity sake

(mom is 84 and will be pressing the button in very low light) but if I must use more than 1 button I will.

 

Thanks for any ideas!

  • 0

    I can give you some of the logic like this:

     

    1. Loop forever.
    2. Pause .1 seconds.
    3. If pressed button, add 1 to counter.
    4. If not pressed, if counter > 6 seconds(60) then go to shut down in 60 minutes.
    5. Else If counter > 3 seconds(30) then go to shut down in 1 minute(I like to wait a bit).
    6. Else if counter >  1 seconds(10) then go to reboot Pi (the Pi is running to test the button, but maybe it is not playing music?).
    7. Otherwise clear counter to 0.
    8. Loop back to 1.
  • 0

    I think, you can use together with "click", "double click", and "long press".

  • 0

    How about this sequence...

    1 button, 2 LEDs

    1 push = power on (power  LED ON, Auto LED OFF)

    2nd push = 60 minutes auto shutdown (Power LED ON, Auto LED ON)

    3rd push = shutdown (all LEDs OFF)

     

    If you want just one LED, auto mode could be a slow blink or a different colour.

  • 0 in reply to clem57

    OK, I'm a newb, BTW, I just connected a single pushbutton SW to GPIO pins 18 and Ground. I then copied and pasted in a python script, set it to run at boot via rc.local, and I have the shutdown working when I press the button.

     

    Interpret Singh here on Element 14 forums posted a article and I took the code from that.

     

    Here is the code I have working now, and I need to add your ideas to it, (or do I need to scrap this code and start all over?)

     

    <code>

    1. #!/bin/python 
    2. # Simple script for shutting down the raspberry Pi at the press of a button. 
    3. # by Inderpreet Singh 
    4.  
    5. import RPi.GPIO as GPIO 
    6. import time 
    7. import os 
    9. # Use the Broadcom SOC Pin numbers 
    10. # Setup the Pin with Internal pullups enabled and PIN in reading mode. 
    11. GPIO.setmode(GPIO.BCM) 
    12. GPIO.setup(18, GPIO.IN, pull_up_down = GPIO.PUD_UP) 
    14. # Our function on what to do when the button is pressed 
    15. def Shutdown(channel): 
    16.     os.system("sudo shutdown -h now") 
    18. # Add our function to execute when the button pressed event happens 
    19. GPIO.add_event_detect(18, GPIO.FALLING, callback = Shutdown, bouncetime = 2000) 
    21. # Now wait! 
    22. while 1: 
    23.     time.sleep(1)

    </code>