Button on robot frame needs a function

[kristinellis]

Overview

This is the button. There are many buttons like it, but this one is ours.

The button is lovely and glowy and blue... and currently doesn't do anything when pressed.
Linked to this issue in our software repo.

Behavior

Current behavior: Nothing!
Desired behavior: Something!

Suggested things to do:

• Make it play music! 🎶
• Make the colors change! 🌈
• Try your hand at the suggested fix in the linked issue

[btmorr]

Notes to anyone who wants to work with The Button. The button is wired up to the GPIO pins of the RaspberryPi, so you can poll the associated pin's value to see if the button is currently pressed or not.

The relevant library source code is here: https://github.com/Opentrons/opentrons/blob/edge/api/src/opentrons/drivers/rpi_drivers/gpio.py

You can import and check it in your code using:

from opentrons.drivers.rpi_drivers import gpio

while True:
  if gpio.read(gpio.INPUT_PINS['BUTTON_INPUT']):
    print('The button is currently being pushed!')

The above code will print as fast as possible over and over as long as the button is pushed, which is probably not what you want to do. Replace the print statement with something more interesting, and remember that the loop will keep going, so make it behave sanely (or a fun kind of insanely) if the button is held down!

[kristinellis]

@theosanderson proposes what I think is an ideal way to implement this feature: Disco Bot v 1.0

[MarcelRobitaille]

Does this still work? Looks like there's a class there now. Does initializing it hurt anything? What is chip_name?