TMS320F280039C: mcan_ex4_receive example, no more ISR after breakpoint.

Ari Mendes

Part Number: TMS320F280039C
Other Parts Discussed in Thread: C2000WARE

Hi,

MCAN interrupt stops occurring after breakpoint anywhere in the code.
How can I prevent a breakpoint from disabling interrupts?

Ari.

0 Sahil Deshpande over 1 year ago

Ari,

In case you are working with a C2000ware example, could you kindly specify the C2000ware version?

If it is a custom example, could you share the code of the ISR?

Thanks.

0 Hareesh Janakiraman over 1 year ago

Ari,

What are the values for the DBGSUSP_FREE and AUTOWAKEUP bits? Can you change those values and try?

0 Ari Mendes over 1 year ago in reply to Hareesh Janakiraman

Hareesh,

After MCAN initialization in the mcan_ex4_receive example:

DBGSUSP_FREE = 0;

AUTOWAKEUP = 0;

There was no effect on changing the value of AUTOWAKEUP.

If I set DBGSUSP_FREE = 1, breakpoints no longer disable MCAN interrupts from occurring.

I would like to know in which case it would be useful to set DBGSUSP_FREE = 0, why would I want debug to disable MCAN?

Ari

0 Ari Mendes over 1 year ago in reply to Sahil Deshpande

Sahil,

I'm using C2000Ware_5_00_00_00, this is not a custom example, it is the mcan_ex4_receive.

Ari

+1 Hareesh Janakiraman over 1 year ago in reply to Ari Mendes

Ari Mendes said:
I would like to know in which case it would be useful to set DBGSUSP_FREE = 0, why would I want debug to disable MCAN?

That bit is used for debug purposes. For normal use-case (like a customer application), it must be set to 1. We will add a note in our documentation.

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