UART Communication not working- S32K344

DiaDev — Thu, 22 May 2025 15:50:29 GMT

Board : MR CAN HUBK344 - EVB
Code: LpuartFlexio_Uart_Ip_Example_S32K344

S32 DS platform 3.5.14
Hi,
I am trying to communicate using LPUART2, but I haven't been successful. I have changed the configuration of UART and Intctrl_Ip according to LPUART2 with help of schematic. I connected it to the 'Debug Interface' using the X-DCD-LZ adapter. An image of the X-DCD-LZ adapter and the schematic of the 'Debug Interface' connection are also attached. I would like to understand what might be going wrong.

Thanks!

Re: UART Communication not working- S32K344

Robin_Shen — Fri, 23 May 2025 07:48:19 GMT

Are the highlighted configurations in the picture the ones you modified?

Are PTA8(LPUART2_RX) and PTA9(LPUART2_TX) configured in Pins Tool?
After calling Lpuart_Uart_Ip_AsyncSend, can the logic analyzer or oscilloscope observe the UART signals at PTA9?

If it still doesn't work, I suggest you upload a simplified test project for me to check.

Best Regards,
Robin
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UART Communication not working- S32K344

Re: UART Communication not working- S32K344