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Configuring Gemma M0
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Configuring Gemma M0

by tigerfire on Sun Feb 09, 2020 10:29 pm

I am trying to reinstall CircuitPython on a new Gemma M0 that miraculously lost some files before I ever plugged in a USB cable...
I can get it to boot mode, but when I copy the 'adafruit-circuitpython-gemma_m0-en_US-4.1.2.uf2' file over it disconnects and doesn't come back up with CIRCUITPY as expected. The board just sits there with a pink indicator LED and flashing the small red light.
Any pointers greatly appreciated. Thanks!

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Re: Configuring Gemma M0

by dastels on Sun Feb 09, 2020 10:34 pm

This was the first time you hooked up the Gemma and tried to use it?

Dave

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Re: Configuring Gemma M0

by tigerfire on Mon Feb 10, 2020 6:10 pm

Second time I've powered it up (I tested it a couple days ago). First time I accessed the drive.

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Re: Configuring Gemma M0

by dastels on Mon Feb 10, 2020 9:45 pm

So it worked first time? And not the next time?

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Re: Configuring Gemma M0

by tigerfire on Tue Feb 11, 2020 8:49 am

Let me try again.
I was able to access the file system via USB but some files appeared to be missing.
I tried to reinstall CircuitPython following the instructions but now, after I get GEMMABOOT and load the newest version, it does not come up. I only have a pink LED on the board and no access to the file system.

What does the pink light mean? It is not in the documentation.
Why would the system not come up (as expected) after installation?

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Re: Configuring Gemma M0

by adafruit2 on Tue Feb 11, 2020 12:24 pm

do you mind trying this 'total chip eraser' which clears out any old data on the chip?
https://learn.adafruit.com/welcome-to-c ... t-m0-20-40

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Re: Configuring Gemma M0

by tigerfire on Tue Feb 11, 2020 10:25 pm

I copied the erase file to GEMMABOOT. It restarted in boot mode (as expected), so I copied CircuitPython to GEMMABOOT. It went back to not being connected and shining a pink (sometimes orange?) light.

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Re: Configuring Gemma M0

by adafruit2 on Tue Feb 11, 2020 11:29 pm

does the Serial port get created?

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Re: Configuring Gemma M0

by tigerfire on Tue Feb 18, 2020 9:20 pm

For anyone else who ever stumbles upon this thread: apparently the pink light is a low power indicator. Check that your Gemma is getting at least 4V.

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