TMS320F280049: LIN communication is stopped after increase working load

Part Number:TMS320F280049

Hi,

My customer use TMS320F280049 design DCDC with LIN communication. Under different DCDC working load, we found a LIN problem.

1.  When no load, LIN communication is normal.

2.  When increase load to 20A (rated power is 37A), LIN is stopped.

We use polling method for LIN communication(not interruption mode)

Here is LIN code:

Task Scheduler

Add LIN initialization and Rx progress code on below.

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