NRF9160 watchdog + OTA Update fails

RE: NRF9160 watchdog + OTA Update fails

Albrecht Markus Schellenberger — Thu, 11 Nov 2021 15:14:49 GMT

[quote user="danielboe"]which version of the SDK I need and where can I configure this? [/quote]

You should be able to do this configuration in NCS v1.7.0.

The parameter is located in ../bootloader/mcuboot/boot/zephyr/Kconfig and can be enabled via <application root>/child_image/mcuboot.conf, as demonstrated by the Serial LTE modem application.

Regards,

Markus

RE: NRF9160 watchdog + OTA Update fails

danielboe — Thu, 11 Nov 2021 12:11:06 GMT

Okay thanks. which version of the SDK I need and where can I configure this?

I use NRF Connect 1.7.0 and I cant set the option in prj.conf

thanks

Daniel

RE: NRF9160 watchdog + OTA Update fails

Albrecht Markus Schellenberger — Thu, 11 Nov 2021 09:36:08 GMT

Hello Daniel,

[quote user="danielboe"]can you explain a bit more here?[/quote]

Once the watchdog is started it can not be stopped and it neither will be by a soft reset leading to a FOTA image swap. I assume that the firmware image validation takes a little bit too long time triggering a watchdog reset. CONFIG_BOOT_WATCHDOG_FEED will feed the watchdog during that time avoiding this.

As an alternative (which I normally would not recommend), you could try to perform an application reset by triggering the watchdog instead, which will stop the peripheral during image swapping.

Regards,

Markus

RE: NRF9160 watchdog + OTA Update fails

danielboe — Wed, 10 Nov 2021 16:14:50 GMT

Hi Markus,

can you explain a bit more here? I can´t find any documentation to this and dont understand what is it doing.

thanks and best regards

daniel

RE: NRF9160 watchdog + OTA Update fails

Albrecht Markus Schellenberger — Tue, 09 Nov 2021 15:36:50 GMT

Hello Daniel,

In MCUboot v1.7.0, watchdog feed has been added via CONFIG_BOOT_WATCHDOG_FEED. This should solve the problem you are facing.

Viele Grüße,

Markus