topic Re: How to reset EPC5200 programmatically. in Processor Expert Software

How to reset EPC5200 programmatically.

AlexVM — Mon, 01 Nov 2021 20:35:20 GMT

Dear experts,

I am a novice with this processor, but got a task recently: reset EPC5200 programmatically.

Under 'reset' I mean - force to execute bootloader same way as it occurs on power cycle.

Here is the code I've got from team lead:

// Turn ethernet off
Ethernet::Close();

//mask all interrupts
ICTL->cprimmsk = 0x1FFFF;

//wait to make sure everything is off
SystemUtils::MSleep(1000);

void(*localProgramAddressFPtr)(void) = reinterpret_cast<void(*)(void)>(0xFFF00000 + 0x100);

//call the reset routine
(*localProgramAddressFPtr)();

But instead of rebooting, the application freezes.

What I am doing wrong? Might there be a different way to accomplish? Some standard API call etc.

Thank you,

Alex

ZhangJennie — Tue, 02 Nov 2021 03:40:38 GMT

Thank you for contacting us.

Please let us know your NXP chip part number, thus we can assign right engineer for your issue.

Thanks,

Jun Zhang

AlexVM — Tue, 02 Nov 2021 15:41:31 GMT

Hi,

Thanks for your reply.

If I understand correctly, it is SPC5200CBV400B.

Thanks,

Alex

Pavel — Fri, 05 Nov 2021 16:04:52 GMT

The MPC5200 hardware does not have possibility to produce the same reset as POREST. It is possible to produce HRESET assertion only.

The simplest is the following for HRESET assertion:

produce Machine check exception and HRESET assertion

produce HREST using watchdog.

AlexVM — Fri, 05 Nov 2021 16:08:19 GMT

Thanks for your reply.

I've just resolved it using watchdog, works for me.

Thanks again,

Alex