NXP MPC5748 FreeRTOS demo

Mina_Sameh_26 — Thu, 18 Dec 2025 19:45:03 GMT

we are testing FreeRTOS on the NXP MPC5748G by running the ready made demo provided by S32 design Studio it works fine when we Build and run the project but when we try to build and run the project as a standalone project the project main functionality does not run as intended after some trace we found that the problem is most likely to be in vtaskdelay() is not working so please can anyone suggest a solution

Re: NXP MPC5748 FreeRTOS demo

petervlna — Fri, 02 Jan 2026 09:46:07 GMT

Hello,

It sounds like your FreeRTOS tick isn’t running in the “standalone” build, so vTaskDelay() never wakes tasks. On the MPC5748G (PowerPC e200z4), that typically boils down to one of these in the move from “Run in IDE” → “Run from flash/standalone”:

Clock source isn’t actually configured (PLL not locked, bus clock different).
The tick timer isn’t initialized or its interrupt isn’t firing (STM/PIT/RTI).
Global interrupts aren’t enabled (MSR.EE = 0).
The interrupt vector table (IVPR) isn’t placed or the INTC isn’t set up in standalone.
Interrupt priorities conflict with FreeRTOS’s configMAX_SYSCALL_INTERRUPT_PRIORITY.
Linker/startup differences (missing startup code or wrong section placement).
Watchdog resetting before you notice.

Best regards,

Peter

topic NXP MPC5748 FreeRTOS demo in MPC5xxx

NXP MPC5748 FreeRTOS demo

Re: NXP MPC5748 FreeRTOS demo