TMS320F280039C: Lin can not work

Emma Wang

Expert 4940 points

Part Number: TMS320F280039C
Other Parts Discussed in Thread: C2000WARE

Hi expert,

Customer wants to configured Lin in Sci mode, but they found the data reception interrupt cannot be entered.

They located the reason in RXENA and TXENA cannot be written to 1.

Below is the configue code:

they also tried bit field method. but still not work.

And I alos tried the demo code in C2000ware, it can not set these bits to 1, either.

Could you kindly help to give some suggestion?

Emma

over 3 years ago

0 Nirav Ginwala over 3 years ago

TI__Genius 15385 points

Hi Emma,

How do you know that bit is not getting written? Can you send me the memory dump or the screenshot of the LINA regs memory space?

Thanks & Regards,

Nirav

0 Emma Wang over 3 years ago in reply to Nirav Ginwala

TI__Expert 4940 points

Nirav,

Emma

+1 Nirav Ginwala over 3 years ago in reply to Emma Wang

TI__Genius 15385 points

Hi Emma,

Looks like the register view is not read correctly. Can you please read in the memory browser address 0x6A04 when you execute those functions and see if they are getting updated or not?

Best Regards,

Nirav

0 Emma Wang over 3 years ago in reply to Nirav Ginwala

TI__Expert 4940 points

Nirav,

it is the screen shot which I test lin_ex2_sci_loopback in C2000ware.

it can run correctly and run into the interrupt. however, The TXENA and RXENA are not set, either.

so what the real function these bits for ? it seems the register is not updated correctly but they are already enabled. Am I right?

Emma

0 Emma Wang over 3 years ago in reply to Emma Wang

TI__Expert 4940 points

Nirav,

I found the register is not updated correctly, and the memory broser is correctly. I will open another thread for other lin questions.

Emma

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TMS320F280039C: Lin can not work