semi-bricked (?) XMEGA A1U Xplained Pro

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Somewhere along the line Atmel Studio stopped talking to my XMEGA A1U Xplained Pro. 

 

It's partly alive:

  • When I unplug its USB cable, Windows makes the "dee-doh" sound, and when I plug it in, it goes "doh-dee".
  • The power light is on.
  • The yellow LED is on.  When I hold the reset button, it goes off.

But:

  • Neither `mode` nor my favorite terminal emulator (CoolTerm) find the XMEGA on a COM port.
  • My Atmel Microchip Studio project that previously worked doesn't recognize the device (i.e. doesn't show up under Tool)

 

Any suggestions for further diagnosis or -- even better -- resurrection?

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Does it show up Under device manager?

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On my PC, some items take like 5 full minutes to register (for some reason)...so you hear the bong, but if you try anything it won't work & you falsely think it never will (however, I can see my SSD LED furiously flashing away...so it is very busty installing/config/verifying something).

You can also try powering down & rebooting the PC.

Make sure to plug direct into the PC and not into a hub.  Apply power to the tool, if needed.

 

Has it been a long time (years?)...maybe delete the old drivers & let Windows freshen them.

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

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@kutch Good catch: the driver does show up under USB Controllers, but with a "danger" triangle ("This device cannot start.  (Code 10)  Insufficient system resources to complete the API.")  I uninstalled the driver and plugged it back in, but it's back with the danger triangle.  But at least you've pointed me in the right direction -- I'll keep marching.

 

Update:

 

Strange.  By way of background, I have five XPlained Pro boards plugged into my system [XMEGA A1U, SAMD11, SAMD21, SAME54, SAML11] -- what can I say?  I have a lot of clients...

 

I use good quality powered USB 3 hub extenders with 2.5A supplies, and (as experiments have shown), lack of power is not the issue. 

 

Rather, the system appears to support four XPlained Pro boards, but when I plug in a fifth board, its driver fails with "Insufficient Resources to complete the API".  And it's always the last board to be plugged in that fails, regardless of which board it is.  I thought it might be due to overloading the USB extender, but I plugged #5 into a separate USB extender and got the same result.

 

Methinks I need someone with a deep understanding of the USB system on Windows 10.

 

Update #2:

 

Make that SIX boards: I also have a Microchip ICE.  When I unplug it and plug it in last, it is the one that fails.  And it's worth noting that this one is on a totally separate USB port extender.

 

I'll see if my Microchip FAE has any insights about this...

Last Edited: Tue. Sep 7, 2021 - 04:47 AM
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maybe this video (can't vouch for it at all)

 

https://www.youtube.com/watch?v=...

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!