topic Re: S32K312: LPUART7 not working in S32K

S32K312: LPUART7 not working

himonkoch — Sat, 16 Nov 2024 14:30:08 GMT

Hi,

I am working on a project that uses S32K312 microcontroller. While working on the dev board and using LPUART1 for uart communication, it works fine and I am able tom see the required output.

However, my project needs to use LPUART0. So when I try to use LPUART0, the code goes into a hard-fault. The following line in Lpuart_Uart_Ip_HwAccess.c causes the hard-fault:

The same code using only LPUART1 works just fine.

What could be the issue?

Re: S32K312: LPUART7 not working

Robin_Shen — Tue, 19 Nov 2024 02:14:54 GMT

For projects developed based on NON-AUTOSAR MCAL, you need to enable the clock gate of LPUART7 in Clocks Tool:

For projects developed based on AUTOSAR MCAL, you need to enable the clock gate of LPUART7 in Mcu-> McuPeripheral -> Peripheral Clock Enable in Peripherals Tool: refer to the discussion in S32K312EVB-Q172 UART Example not working

Best Regards,
Robin
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Re: S32K312: LPUART7 not working

himonkoch — Tue, 19 Nov 2024 04:54:35 GMT

Hello @Robin_Shen ,

The Project is not AUTOSAR based. The clocks for all the LPUART peripherals are already enabled.

Another piece of information that I did not mention in the query is that currently we are only performing Transmission of uart messages, no receiving. Also, the tx is a synchronous tx. The following is the function we are calling for the same.

Regards,

Himon Koch

Re: S32K312: LPUART7 not working

Robin_Shen — Tue, 19 Nov 2024 04:59:01 GMT

If it is convenient, please send me a simple test project for a quick test.

Re: S32K312: LPUART7 not working

himonkoch — Wed, 20 Nov 2024 14:05:04 GMT

Hello @Robin_Shen ,

In the process of making the test project with uart, the issue was resolved. Thank you for the support.