AM2634: LIN driver is not sending a Published frame after Subscribed frame is sent

Prashanth Arun

Part Number: AM2634

Regrading issue raised for LIN which went to pre-silicon testing:

https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1208882/am2634-lin-driver-is-not-sending-a-published-frame-after-subscribed-frame-is-sent/4567441#4567441

We need to start using the LIN for our project. Please share us some temporary patch or permanent patch for the above issue which can solve us the frame corruption problem which is happening now.

A temporary fix also should be fine.

Thanks & regards,

Prashanth Arun

over 2 years ago

0 Ankur Baranwal over 2 years ago

TI__Mastermind 26205 points

Hi Prasanth Arun,

Closing this thread as this is duplicate of

https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1222639/am2634-lin-driver-is-not-sending-a-published-frame-after-subscribed-frame-is-sent

We will continue support of previous thread. We are trying to debug the issue with internal teams and get back as soon as possible

Regards,

Ankur

0 Prashanth Arun over 2 years ago in reply to Ankur Baranwal

Intellectual 255 points

Dear TI experts,

Can you please let me know if the problem has the solution now.

Is there is any workaround on this problem as we have to use LIN in our project.

Thanks & regards,

Prashanth Arun

0 Punit Sharma over 2 years ago in reply to Prashanth Arun

TI__Prodigy 160 points

Hi Prashanth Arun,

We have confirmed this is not an issue. To determine, if the packet is supposed to be received or transmitted, that id filter needs to be updated in the filter mask.

Hence, in case of transmit, you need to call -

txID = LIN_generateParityID(txID);
LIN_setTxMask(APP_LIN_BASE_ADDR, txID);

In case of receive -

rxID = LIN_generateParityID(rxID);
LIN_setRxMask(APP_LIN_BASE_ADDR, rxID);

We tested the same and we don't see the packet drop anymore.

Hope it helps.

Best Regards,

Arm-based microcontrollers

Arm-based microcontrollers forum

AM2634: LIN driver is not sending a Published frame after Subscribed frame is sent