TMS570LS3137: TMS570LS3137 - CAN setup message format - Standard or Extended

Hi Nisal,

Xtd bit in IF1/IF2 register will enable the Extended ID for CAN frame

In HALCOGen you can enable the same by clicking on check box called "Enable Identifier Extension"

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Thanks & regards,
Jagadish.

Hi Jagadish,

Thank you very much. This solved my issue. However, let say that I need to have a mix of extended and standard IDs for the same CAN peripheral (e.g. CAN1), how can I accomplish this?

Do I need to manually edit some registers ?

Nisal

Hi Nisal

Nisal Bulathsinghala said:

Do I need to manually edit some registers ?

Yes, we can do that manually, but remember there must be some packet drop while switching in between extended and standard mode because 

for example if i configure in standard mode and i received a packet with extended mode then extended ID will get mismatched and packet will get dropped.

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Thanks & regards,
Jagadish.

Hi Jagadish,

As I recall in C2000 microcontroller line up, we can select standard or extended ID format for each mailbox separately ? Is it the same for this as well ? Or have I mistaken it ? Because in applications we get devices with both extended and standard IDs in the same CAN bus. How can I achieve this ?

Nisal 

Hi Nisal,

Sorry for the delay i am on vacation for last week.

Nisal Bulathsinghala said:

As I recall in C2000 microcontroller line up, we can select standard or extended ID format for each mailbox separately ?

As per my knowledge, i don't think it would be possible in hercules devices. Let me discuss with internal team for confirmation.

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Thanks & regards,
Jagadish.