2398625_en-US

Yes

S32K388 JumpApp Only runs with core 0 active.

I created a bootloader program and placed it at addresses 0x400000 to 0x420000. Whenever I update the program via serial port, only Core 0 continues to run. How can I enable the other cores to also run?

S32_SCB->VTOR = 0x00422000;

__asm volatile(

"msr msp, %0"

:

: "r"(appStack)

: "memory");

((pFunction)appEntry)();

Re: S32K388 JumpApp Only runs with core 0 active.

Hi @zhangyu5454,

You can enable the cores in the startup code. Refer to the startup code (startup_cm7.s) of the default S32DS project.

For example, if CM7_2_ENABLE == 1, the startup code will enable CM7_2 during system startup.

The cores can also be enabled later from the CM7_0 application, either by configuring the relevant registers directly or by using the MCU MCAL driver or the Power_Ip driver. Refer to this example:

https://community.nxp.com/t5/S32K-Knowledge-Base/S32K358-Multicore-Start-CM7-2-from-CM7-0/ta-p/19238...

BR, Daniel

Re: S32K388 JumpApp Only runs with core 0 active.

Thank you for your response. I have tried using Power_Ip, but when the line “Power_Ip_Init(&Power_Ip_HwIPsConfigPB);” appears in the program, the debugging process automatically ends. Moreover, even when I don’t press the reset button, the reset light remains illuminated, resulting in the device not being able to operate at all. When I use IP_MC_ME, the program runs normally, but it doesn’t produce any results. The other components also fail to start. This code snippet seems not to work well for model 388.

Re: S32K388 JumpApp Only runs with core 0 active.

Hi @zhangyu5454,

If the MCU goes through a system reset, you need to read the source of the reset.

You can call

Power_Ip_GetResetReason();

at the beginning of main() before

Power_Ip_Init();

Likely root cause is the V15 Switched-mode power supply - it must match the HW design.

BR, Daniel

Re: S32K388 JumpApp Only runs with core 0 active.#S32K388

According to your advice, I will implement it in the int main(void) section. Power_Ip_GetResetReason() was called. However, the test results remain unchanged.

int main(void)

{

Power_Ip_GetResetReason();

Power_Ip_Init(&Power_Ip_HwIPsConfigPB);

Clock_Ip_Init(&Mcu_aClockConfigPB[0]);

Power_Ip_SetMode(&Power_Ip_aModeConfigPB[0]);

while (1)
{

Re: S32K388 JumpApp Only runs with core 0 active.#S32K388

Hi @zhangyu5454,

What is the reset reason then?

If I had to guess, it would be a POR/LVR.

How is V15 powered on the PCB?

Do you configure Power_Ip accordingly?

Regards,

Daniel

Thank you.