File "base/stepmotor.py", line 1, in __init__ ValueError: invalid pin

Schnoble

Hi everyone

I am trying to use an Atomic stepmotor base (SKU:A132) with an Atom lite (SKU:C008) Uiflow2.0 (v2.2.8) but it does not work.
I get this error message :
File "base/stepmotor.py", line 1, in init ValueError: invalid pin
I think pins are sets correctly :

base_stepmotor = AtomicStepmotorBase(22, 23, 19, 25, 21)

I do not understand why it's throwing error and what i am doing wrong ?

felmue

Hello @Schnoble

you are not doing anything wrong I think. The issue is with UIFlow2 firmware for M5AtomLite. As far as I can tell the default pins are for M5AtomS3 (Lite) and there is one additional pin, which cannot be set from the init block and it is set to a GPIO (8) only available in S3. See here.

BTW: I've created a PR for the issue. So hopefully it will be fixed in a future firmware version.

Thanks
Felix

Schnoble

Thanks @felmue
Let's hope

Schnoble

For what it worth, I make it work by switching to micropython and replacing

from base import AtomicStepmotorBase

by a modified version of stepmotor.py before downloading the code

If you like using blockly, you need to paste modification each time though...

felmue

Hello @Schnoble

clever! Maybe you could put your modified version into an Execute mpy code (eg. import)? This block can be found under System.

Thanks
Felix