topic Re: About UJA1169 that config NWP via CAN bus in S32K

About UJA1169 that config NWP via CAN bus

fedora — Fri, 14 Jun 2024 10:58:36 GMT

Hi,
The following sentence comes from the UJA1169A datasheet:
【
2.7 System control and diagnostic features
Watchdog period selectable between 8 ms and 4s supporting remote flash programming via the CAN bus
】

Please refer to the attached png file.

I don't understand how to support remote flash programming via the CAN bus?
Is it means that I can config the NWP(Nominal Watchdog Period of Watchdog control register) via other devices on CAN bus?
Please help me explain it，thanks！

Best regards,

Fedora

Re: About UJA1169 that config NWP via CAN bus

TomasVaverka — Mon, 17 Jun 2024 10:59:34 GMT

Hi,

No, it says that the UJA1169A allows to set a long watchdog period up to 4s so that the microcontroller can quite easily be flashed via the CAN bus, basically without having to consider the integrated watchdog.

BRs, Tomas

Re: About UJA1169 that config NWP via CAN bus

fedora — Mon, 17 Jun 2024 11:34:48 GMT

Oh, I understand it now.

Setting a long watchdog period that can quite easily upgrade the MCU firmware via the CAN bus.

Thank you, Tomas !

Best Regards,
Fedora