Control script startup fails with standalone controller in v1.8.0-dev11

[ghandye]

Describe the bug Control script does not start properly on current version of PiFire dev branch (v1.8.0-dev11) with my configuration.

Traceback shows from grill_platform.get_input_status() in grillplat/raspberry_pi_all.py.

Snippet from control.err.log:

INFO:control:Control Script Starting Up.
Traceback (most recent call last):
  File "/usr/local/bin/pifire/control.py", line 1058, in <module>
    last = grill_platform.get_input_status()
  File "/usr/local/bin/pifire/grillplat/raspberry_pi_all.py", line 153, in get_input_status
    return self.selector.is_active
AttributeError: 'NoneType' object has no attribute 'is_active'

Steps to reproduce the behavior:

1. Configure grill platform as a standalone controller
2. Try to start PiFire

Expected behavior Normal startup of control script

PiFire Version:

• 1.8.0-dev11

Additional context Platform: raspberry_pi_all (PWM board) Display: st7789_240x320e Distance sensor: vl53l0x Rotary encoder for input

[ghandye]

I did a little more sleuthing on this...sharing in case it helps.

Trying to follow the logic, it looks like the code[1] in grillplat/raspberry_pi_all.py for get_input_status() checks if the grill platform is standalone or not here:

                if not self.standalone:
                        self.selector = Button(self.in_pins['selector'])
                else:
                        self.selector = None

[1] https://github.com/nebhead/PiFire/blob/ede00b55/grillplat/raspberry_pi_all.py#L63-66

so in my case (standalone controller) that logic should hit the else statement and set self.selector = None.

When we get down to here[2] in the code:

        def get_input_status(self):
                if self.in_pins['selector'] is not None or self.standalone == False:
                        return self.selector.is_active
                return False

[2] https://github.com/nebhead/PiFire/blob/ede00b55/grillplat/raspberry_pi_all.py#L151-154

If I understand correctly, a standalone controller should fail that if statement since selector /is/ None, and it should just return False. But that doesn't seem to be happening, triggering the traceback and bug.

[ghandye]

FYI, since I know my setup is standalone, I was able to hack around this on my controller by commenting out the if statement in L152-153 so it always returns False.

[nebhead]

Thanks for the bug report and sorry it took me until now to look into this.

Also, thanks for debugging it for me! I changed the 'or' to an 'and' - so I'm hoping that will fix the issue. Pushed to the development branch: 8f9488b793fddd23daceb6733827c21cb3f4bfb7

Hopefully it works for you!

[nebhead]

v1.8.0 is out today, hopefully this issue is resolved, but feel free to open an issue if you still see this.