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 Post subject: Bricked Receiver already
PostPosted: Mon Jul 13, 2015 2:26 pm 
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Joined: Mon May 18, 2015 6:27 pm
Posts: 4
Wellll, I bricked my board it seems. I was attempting to load the newest firmware, and the serial connection dropped. Once it dropped, restarting the board yields nothing at all. My assumption is the MCU is now in a bad state.

So.... Any suggestions? Hopefully I can bring this back to life. Somehow.


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PostPosted: Mon Jul 13, 2015 4:13 pm 
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Joined: Thu Jan 09, 2014 11:10 am
Posts: 68
Take a look at page 24 of the latest manual.


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PostPosted: Mon Jul 13, 2015 4:41 pm 
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Joined: Mon May 18, 2015 6:27 pm
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Completely overlooked that. Thank you! Working on that now!


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PostPosted: Mon Jul 13, 2015 6:41 pm 
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Joined: Mon May 18, 2015 6:27 pm
Posts: 4
Using the UART cable from the oDroid, I'm not getting any success. I'm getting a ton of g's returned (which looks to be the bootloader), but the TX doesn't work. Works on the odroid. I've ordered a true UART cable from Sparkfun, so hopefully I can recover this once it's in.


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PostPosted: Tue Jul 14, 2015 6:03 am 
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Joined: Mon Jul 23, 2012 6:25 am
Posts: 1143
Yes, the burned-in bootloader is smart enough not to overwrite itself but if something goes wrong writing the firmware, there's not way to invoke the bootloader except for jumpering pins at start-up.

There's always the 3rd level back-up; the ICSP so if you have a PICKIT or know someone who does, I can get you the FW+bootloader image that we burn into the PIC during factory test.

I'll also be happy to re-flash it if you send it to me.

73,
Jim WA2EUJ


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PostPosted: Thu Jul 16, 2015 12:41 pm 
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Joined: Mon May 18, 2015 6:27 pm
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I got it flashing right now, luckily. The UART cable I was using was a 1.8v UART (for the odroid). Bought a proper 3.3v uart cable from Sparkfun, and it's working now :)

Thank you everyone!


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