CCS/TMS320F28062F: ecan/ stuff bit error

user5060116

Part Number: TMS320F28062F

Tool/software: Code Composer Studio

when i run ecan code example"Example_2806xECanBack2Back"on TMS320F28062F at 1M/s(default in the code example),it works normally,But it goes wrong when i change the frequency to any other value(such as 500k or 250k),it can not work properly with "stuff bit error" (SE =i).I tried other value of BRPreg,TSEG1reg, TSEG2reg ,the problem is still unsolved. Dose anyone know how to solve this problem?Please help me !

over 6 years ago

0 Hareesh Janakiraman over 6 years ago

TI__Guru* 93755 points

I tried this myself @ 500 kbps and had no issues running the example. Not sure why it is not working for you. For 500 kbps, all you have to do is to change the BRP to 3. For 250 kbps, BRP = 7.

0 user5060116 over 6 years ago in reply to Hareesh Janakiraman

Prodigy 180 points

Thanks for your reply,sir! I have tried different BRP value,but it did not work. Do you konw any other reasons that may Lead to this consequences ?

0 Hareesh Janakiraman over 6 years ago in reply to user5060116

TI__Guru* 93755 points

Did you build the project after the change?
Did you reload the .out file after the build?
Are you able to single-step through your code?
When you single-step, are you able to see the updated values in the CANBTC register?
Does your code start working again when you restore the old BRP value?

No, I am unable to think of any reason why a simple change to the BRP value would make the code fail (that too in self-test mode, where other nodes are not involved)

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CCS/TMS320F28062F: ecan/ stuff bit error