lin_master_baremetal_S32k144 change RX and TX pins

[6T9]

Hello,

I'm using the lin_master_baremetal_s32k144 example.

I'm using the S32K144EVB-Q100.

Lin component:

I want to change the standard pins from Rx: PTD6 to PTA8 and TX: PTD7 to PTA9.

When I run it, no LIN message is sent (measured via oscilloscope).

As soon as I press the SW2 button, LIN_DRV_MasterSendHeader(INST_LIN1, FRAME_MASTER_RECEIVE_DATA); is called, retval equals to STATUS_SUCCESS.

I realised the CallbackHandler is not triggered anymore (is only triggered once after reset).

Neither is LIN_LPUART2_RxTx_IRQHandler() triggered.

PTA8 and PTA9 are configured as the following:

Using the standard pins PTD6 and PTD7 works without any issues.

Did I overlook a configuration or something else?

Best regards

Thomas

[PetrS]

Hi,

LIN transceiver is connected to PTD6/PTD7 pins, so after you change pins, did you connect them to LIN transceiver too, either some external one or the one located on EVB? 
For latter one, you can simply connect PTD6 to PTA8 and PTD7 to PTA9 assuming PTA8/PTA9 are not configured.

BR, Petr

[6T9]

Hi,

sorry I forgot to mention that I connected PTA8 and PTA9 to an external LIN transceiver.

Best regards

Thomas

[PetrS · Accepted solution]

Hi,

to test proper pin setting you can disconnect your LIN transceiver and just connect  PTA8 and PTA9 together. Then send a frame.
Below is test I did, change pin setting, update PE code, built and debug. Upon SW2 press I see below

If this will work on your side, but not with transceiver connected then it is transceiver issue.

BR, Petr

[6T9]

Hi,

thank you for your help. The LIN Transceiver had an issue. I replaced it and now it is working as intended.

Best regards

Thomas