FreeRTOS stucks at prvPortStartFirstTask in s32k3xx

leo_Z — Mon, 29 Sep 2025 15:29:55 GMT

Hi Everyone ,

i am trying to run FreeRTOS run in S32k328, i created a single task and try to run it , at first time runs properly , but after that code stuck at one

Hi Everyone ,

i am trying to run FreeRTOS run in S32k328, i created a single task and try to run it , at first time runs properly , but after that code stuck at one prvPortStartFirstTask(),

i changed the svc handler name in vector table , we got this error, posted the images for your reference,

do anything needs to change?

(),

i changed the svc handler name in vector table , we got this error, posted the images for your reference,

do anything needs to change?

Re: FreeRTOS stucks at prvPortStartFirstTask in s32k3xx

PavelL — Wed, 01 Oct 2025 09:52:21 GMT

Hello @leo_Z ,

Thank you for the additional information and screenshots.

From the register view, I can see that the VTOR (Vector Table Offset Register) is set to 0x20000000, which means the vector table is relocated to RAM. This is a valid configuration, but it requires that the vector table in RAM is correctly initialized, including the entry for the SVC_Handler.

Since you mentioned that you renamed the SVC_Handler, please ensure the following:

The vector table in RAM at 0x20000000 must contain the correct address of your renamed SVC_Handler.
If the table was copied from flash, make sure it reflects the updated symbol name.
If you are using C++, ensure the handler is declared with extern "C" to avoid name mangling:

extern "C" void My_SVC_Handler(void)
Verify that the vector table is correctly copied to RAM before setting VTOR.
This is typically done early in SystemInit() or main().
Double-check that the renamed handler is correctly linked and not discarded by the linker.

If the issue persists, could you please share a minimal version of your project that reproduces the problem? This would help us analyze the vector table setup and handler linkage in more detail.

Best regards,

Pavel

S32KのトピックFreeRTOS stucks at prvPortStartFirstTask in s32k3xx

FreeRTOS stucks at prvPortStartFirstTask in s32k3xx

Re: FreeRTOS stucks at prvPortStartFirstTask in s32k3xx