TMS570LC4357: CAN Extended Frame with 1000 kbps

Dobby

Part Number: TMS570LC4357
Other Parts Discussed in Thread: HALCOGEN

Hİ,

I want to use the Canbus Extended Frame rate at 1000 kbps, but when I configure it in Halcogen,
I get an error in CanAnalyzer Mini. This also applies to the standard frame rate at 1000 kbps. 
How can I resolve this? My Halcogen configuration and the code I want to run are below.

1 month ago

0 Dobby 1 month ago

Prodigy 155 points

0 QJ Wang 1 month ago in reply to Dobby

TI__Guru**** 199096 points

Hi Doddy,

The SEG1=SEG2=1 is not a good choice. You can manually change the value of SEG1 and SEG2, and also the BRP. For example BRP=2, the CAN bit clock will be 75/3=25MHz, nominal bit time=25, then sync=1 (fixed), seg2=5, and prog+seg1=19.

Or you can try 500 of propagation delay, then nominal bit time becomes 15 (BRP=4), and SEG2=3, and prop+seg1=11.

0 Dobby 1 month ago in reply to QJ Wang

Prodigy 155 points

Thanks for reply.
But i can not understand to change this value in halcogen. When i try change value , i can not change. How can i change manually ? or are there example projects to extended can with 1000 baudrate ?

0 QJ Wang 1 month ago in reply to Dobby

TI__Guru**** 199096 points

You can not chang ethe SEG1 and SEG2 directly, but you can modify the propagation delay which will affect the value of SEG1 and SEG2. Or you can change the SEG1 and SEG2 in the HAlCoGen generated code (canInt()).

+1 QJ Wang 1 month ago in reply to QJ Wang

TI__Guru**** 199096 points

0 Dobby 1 month ago in reply to QJ Wang

Prodigy 155 points

Hi QJ Wang,

My issue has solved thanks for you.

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TMS570LC4357: CAN Extended Frame with 1000 kbps