How to know if an OTA update just happened?

RE: How to know if an OTA update just happened?

mmnano — Tue, 21 Sep 2021 14:50:28 GMT

Using a general purpose retention register, I think I can avoid using the fw_info module.

Thank you for your help again

RE: How to know if an OTA update just happened?

Sigurd — Tue, 21 Sep 2021 14:39:42 GMT

[quote user="mmnano"]How would you implement this using this function ?[/quote]

I would have used it together with the general purpose retention register .It's e.g. used to store reset type: https://github.com/nrfconnect/sdk-zephyr/blob/01a38e7fa55913350c647df1f51715fea5d80daa/soc/arm/nordic_nrf/nrf52/soc.c#L52

E.g use nrf_power_gpregret2_set(), and set some value from what fw_info_find() returns, before you start the DFU. Then on reboot, check what fw_info_find() returns and compare with what nrf_power_gpregret2_get() returns. Could perhaps use this without fw_info_find() also. Just set the gpregret register to some magic value before the DFU reboots the app. On reboot, read the register, and check if the magic value is present or not. After the check, remember to set the register back to 0.

RE: How to know if an OTA update just happened?

mmnano — Mon, 20 Sep 2021 07:40:43 GMT

Hi,

Thank you very much, this is what I was looking for.

How would you implement this using this function ?

RE: How to know if an OTA update just happened?

Sigurd — Fri, 17 Sep 2021 11:19:14 GMT

Hi,

[quote user=""]Maybe I can store something in non-volatile storage or is there a function that can check that somewhere already ?[/quote]

You can use the fw_info module, and the fw_info_find() function.

developer.nordicsemi.com/.../fw_info.html