TMS320F280025: How to enable multi-buffer on LIN as SCI?

Wayne Huang

Genius 15615 points

Part Number: TMS320F280025
Other Parts Discussed in Thread: C2000WARE

Dear Champs,

I am asking this for our customer.

The user can use LIN as SCI if multibuffer is not used.

But when they used multibuffer as below, it failed.

LinaRegs.SCIGCR1.bit.MBUFMODE =1;

Is there anything wrong?

Do we have any example to show how to use SCIGCR1.MBUFMODE ;

Is it shown in C2000ware?

If we overlook it, would you please show which example explicitly?

Wayne Huang

over 4 years ago

0 Nirav Ginwala over 4 years ago

TI__Genius 15385 points

Hi Wayne,

Below example in C2000Ware configures LIN as SCI and enables multi-buffer mode. Only difference is it does DMA reads, which customer can replace with CPU reads?

C:\ti\c2000\C2000Ware_3_04_00_00\driverlib\f28002x\examples\lin\lin_ex3_sci_dma.c

Best Regards,

Nirav

0 Xiang Li over 4 years ago

Prodigy 10 points

Dear Champs,

Can we use multi-buffer only in Tx but not in Rx?

Thanks!

Stone Peng

0 Nirav Ginwala over 4 years ago in reply to Xiang Li

TI__Genius 15385 points

You can use multi-buffer both RX and TX.

Best Regards,

Nirav

0 Wayne Huang over 4 years ago in reply to Nirav Ginwala

TI__Genius 15615 points

Dear Nirav,

Do you mean:

The user can use multi-buffer in either TX or RX, and both TX/RX together.

Is it right?

Wayne

0 Nirav Ginwala over 4 years ago in reply to Wayne Huang

TI__Genius 15385 points

Yes, LIN is single line communication so it will be either TX or RX at a time. Meaning you cannot transmit and receive at the same time.

Best Regards,

Nirav

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F280025: How to enable multi-buffer on LIN as SCI?