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Need help with Grand central M4
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Please be positive and constructive with your questions and comments.

Need help with Grand central M4

by 4MInnovations on Wed Jul 08, 2020 11:24 am

Hi,I have a problem with a Adafruit Grand Central M4 Express featuring SAMD51 .

It works well for several days and one morning when I feed it, nothing works.

When this happens, the led # 88 is lit in green and the intensity of the led # 13 goes from lit to almost off in loop.

I am able to restart it by downloading the software again.

Then it works as if nothing had happened.

So I'm looking for the cause of this failure so that it does not happen again.

4MInnovations
 
Posts: 8
Joined: Wed Jul 29, 2015 8:17 am

Re: Need help with Grand central M4

by dastels on Wed Jul 08, 2020 12:03 pm

It's not a failure, it just got into bootloader mode. Usually you do that by double-pressing reset. Could you have done that accidentally?

In that mode you can load a new CircuitPython UF2.

Dave

dastels
 
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Re: Need help with Grand central M4

by User_UMjT7KxnxP8YN8 on Wed Jul 08, 2020 12:04 pm


User_UMjT7KxnxP8YN8
 
Posts: 153
Joined: Tue Jul 17, 2018 1:28 pm

Re: Need help with Grand central M4

by 4MInnovations on Wed Jul 08, 2020 12:14 pm

Thanks,

It is impossible to push twice on reset, the button is not accessible and the reset pin is not connected.

But, I did not update the firmware, I will.

4MInnovations
 
Posts: 8
Joined: Wed Jul 29, 2015 8:17 am

Please be positive and constructive with your questions and comments.