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Trinket M0 solid purple light - not responding to updates
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Trinket M0 solid purple light - not responding to updates

by caleb_kraft on Wed Sep 22, 2021 2:19 pm

Hey folks, feeling silly here. I got an M0 and when I plugged it in, the dotstar LED shines solid purple. I understand the default code is supposed to cycle through colors.

I've tried uploading other examples and can't get any other response out of it. Have I fried this thing somehow? It shows up as a drive. I can even double click and get to the bootlaoder. It just seems like the python code is not executing, or locking up.

more info--
It shows up as a drive. I can edit the python file, and I can see that changes are saved. However, nothing changes in the trinket's behavior. I've tried doing HID keyboard example and got nothing different out of it. I've put the default files from the website onto it and nothing changes.

further info
boot data: Adafruit CircuitPython 3.1.1 on 2018-11-02; Adafruit Trinket M0 with samd21e18
bootloader info: UF2 Bootloader v3.13.0 SFHWRO
Model: Trinket M0
Board-ID: SAMD21E18A-Trinket-v0

caleb_kraft
 
Posts: 5
Joined: Wed Sep 22, 2021 1:21 pm

Re: Trinket M0 solid purple light - not responding to update

by dastels on Wed Sep 22, 2021 2:52 pm

Are you making sure to call the python file either code.py or main.py?

Dave

dastels
 
Posts: 7465
Joined: Tue Oct 20, 2015 3:22 pm

Re: Trinket M0 solid purple light - not responding to update

by caleb_kraft on Wed Sep 22, 2021 3:24 pm

Yup. main.py

remember, the default code wasn't working.

In the meantime, I've hooked it up to the arduino IDE and loaded a blinking LED, and that worked. that means the trinket is functional and I've just got something screwy in my setup. I'd really like to use the circuit python HID gamepad library here. I need this to show up as a game pad (not keyboard/mouse).

caleb_kraft
 
Posts: 5
Joined: Wed Sep 22, 2021 1:21 pm

Re: Trinket M0 solid purple light - not responding to update

by caleb_kraft on Wed Sep 22, 2021 3:39 pm

Making progress!

after confirming the board is fine with arduino IDE. I installed the latest circuit python again and at least now the dotstar flashes red twice.

caleb_kraft
 
Posts: 5
Joined: Wed Sep 22, 2021 1:21 pm

Re: Trinket M0 solid purple light - not responding to update

by caleb_kraft on Wed Sep 22, 2021 3:54 pm

must be some kind of version or library mismatch. I can upload a sample LED blinking code via MU and it works fine.

caleb_kraft
 
Posts: 5
Joined: Wed Sep 22, 2021 1:21 pm

Re: Trinket M0 solid purple light - not responding to update

by dastels on Wed Sep 22, 2021 5:46 pm

Sounds like the libraries. Make sure you have the latest bundle for the version of CircuitPython you are using. Delete everything in CIRCUITPY/lib, empty trash, and copy over the new libraries you need.

Dave

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Joined: Tue Oct 20, 2015 3:22 pm

Please be positive and constructive with your questions and comments.