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Unread 06-02-2010, 19:44
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Re: Bricked black Jaguar after bad firmware update

Quote:
Originally Posted by simpsonboy77 View Post
Could you elaborate on this? Is it black jaguar specific? We are using the 2can to connect the CAN bus to the cRio instead of the black jaguar. I am mostly hung up on what you mean by "active board".

Thanks in advance
Don't know much about 2CAN, but when using BDC-COMM, the utility will poll the CAN bus to see what devices are connected. Each device has a unique ID. You must choose an ID before sending commands; the commands you send will go to the device with that ID (what I called the "active board").

When you assign a new ID to a device, the utility re-polls the CAN bus for devices (since one of the IDs probably just changed) and lists their IDs again. It automatically selects the lowest ID as the active device. In our case, this happened to be the black Jaguar.

The scene went something like this:

1. We are flashing our grey Jaguars by connecting them one at a time to the black one.
2. We plug in the next grey Jag and select its ID (1 by default) in BDC-COMM.
3. We assign an ID of 5 to the grey Jag.
4. We realize, "oh, crap; we forgot to update the firmware."
5. We quickly click "update firmware," not realizing the active ID has reset to 2 (the black Jag).
6. In our attempts to get the black Jaguar working again, and before hearing about the proper recovery procedure, (I presume) we do something that messes it up even more.

So yeah, our Jag is still dead and TI's tech support isn't being very quick: yesterday was the third day in a row I got an, "I've forwarded this to the correct team; you should hear from us shortly" email and didn't hear from them for the rest of the day. So I just went ahead and ordered another black Jag from Digikey.
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