topic Hardfault problem in S32K344 in S32K

Hardfault problem in S32K344

Andrew101 — Thu, 09 Oct 2025 10:35:10 GMT

Hello everyone,

I reused an example code named "SIUL2_DIO_Ip_Example_S32K344" and added UART peripheral. However, when I called the init function of UART, the program jumped to hardfault function. I suspect that the clock of this peripherals is not configed correctly but I don't know how to fix it. Besides, does it have any reasons causing to hardfault? Here are some picture of my program. Thanks for your help.

Re: Hardfault problem in S32K344

Julián_AragónM — Thu, 09 Oct 2025 17:39:36 GMT

Hi @Andrew101,

Please check if UART0 is gated in the Clocks view, and if the Lpuart component has your clock config correctly assigned:

You can also check the register for the specific clock enable register:

Best regards,
Julián

Re: Hardfault problem in S32K344

Andrew101 — Fri, 10 Oct 2025 06:20:31 GMT

Thanks for your answer. When I checked as your guide, actually the clock of this peripheral was not turn on . In this case, I need to turn on it manually by register or do I have a another way?

Re: Hardfault problem in S32K344

Julián_AragónM — Fri, 10 Oct 2025 15:26:36 GMT

Hi @Andrew101,

If you have the peripheral's clock gated in the Clocks GUI, the register should be updated to 1 after calling Clock_Ip_Init(). To do it manually, you must add the "Power" component to the project, and individually enable the clocks in the McuPeripheral tab:

After this, you also need to call the initialization and set mode functions:

Power_Ip_Init(&Power_Ip_HwIPsConfigPB);
Power_Ip_SetMode(&Power_Ip_aModeConfigPB[0]);
 

Best regards,
Julián