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Suspected Bootloader Issue with New Neo Trinkey
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Please be positive and constructive with your questions and comments.

Suspected Bootloader Issue with New Neo Trinkey

by mdkling on Mon Jun 14, 2021 2:11 pm

Hello I just received a new Neo Trinkey (P/N 4870) and can't get it up and running. I've tried plugging it into multiple USB ports on multiple computers with both Windows and Linux, and the USB device is never detected. I was able to confirm with a Trinket M0 that there are no issues on the computer side detecting SAMD USB devices. Double-clicking the reset to enter UF2 mode does not appear to do anything. There is no activity on the NeoPixels, and the USB device is not detected.

Is there something else I can try to troubleshoot?

mdkling
 
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Re: Suspected Bootloader Issue with New Neo Trinkey

by adafruit_support_carter on Tue Jun 15, 2021 1:38 pm

Does the board seem solid when inserted into USB port? Since the Neo Trinkey has the simple exposed side edge USB connection, it won't be as solid as USB connectors with shields. So maybe it's not fully engaging?

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Re: Suspected Bootloader Issue with New Neo Trinkey

by mdkling on Tue Jun 15, 2021 2:11 pm

It feels like a solid connection. The PWB has the same width and thickness of my YubiKey and I don't have any issues with that.

Is any demo code loaded into the Neo Trinkey prior to shipment such that I would be able to see activity on the NeoPixels if I applied 5V directly to the VBUS and GND pads on the USB connector? Or does it come blank with just the bootloader?

mdkling
 
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Re: Suspected Bootloader Issue with New Neo Trinkey

by mdkling on Tue Jun 15, 2021 4:16 pm

Some more info: I just checked with the board plugged into a USB port and I'm getting a stable 3.3V out from the LDO and /RESET is going 'High', so I think the SAMD is alive and coming out of reset. It looks to me like the bootloader was either not flashed in or corrupted somehow, but I can't verify that without a SWD setup.

mdkling
 
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Re: Suspected Bootloader Issue with New Neo Trinkey

by adafruit_support_carter on Tue Jun 15, 2021 4:30 pm

It should have come with a demo that does a rainbow swirl on the NeoPixels. But without any USB enumeration.

Do you get anything if you double press the reset button?

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Re: Suspected Bootloader Issue with New Neo Trinkey

by mdkling on Tue Jun 15, 2021 6:37 pm

Yeah I'm definitely not seeing the rainbow swirl demo. Double pressing the reset button doesn't seem to do anything - I don't see the NeoPixels flash either red or green and the UF2 drive doesn't appear on my host PC. I double checked with my Trinket M0 to make sure I was getting the right timing pressing the button.

mdkling
 
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Re: Suspected Bootloader Issue with New Neo Trinkey

by adafruit_support_carter on Tue Jun 15, 2021 7:44 pm

OK, thanks for all the checking. Let's just replace it and see if that helps. Send an email to support@adafruit.com with a link to this thread and your order number and they can send you a replacement Neo Trinkey.

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Re: Suspected Bootloader Issue with New Neo Trinkey

by mdkling on Tue Jun 15, 2021 10:53 pm

Ok, thanks for your help!

mdkling
 
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Re: Suspected Bootloader Issue with New Neo Trinkey

by mdkling on Tue Jun 22, 2021 2:00 am

Update: just got my RMA replacement Neo Trinkey.

It comes right up with the standard rainbow-swirl pattern on the neopixels and correctly enters UF2 mode when I double-click the reset button (neopixels turn green and TRINKEYBOOT drive mounts).

Thanks for your help! Everything is working as expected so far on the replacement device.

mdkling
 
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Re: Suspected Bootloader Issue with New Neo Trinkey

by adafruit_support_carter on Tue Jun 22, 2021 10:52 am

Cool. Glad the replacement worked. Thanks for letting us know. Have fun!

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Please be positive and constructive with your questions and comments.