Modem Low Level Warning

RE: Modem Low Level Warning

Michal — Thu, 12 Jun 2025 15:32:06 GMT

Hello Stefan,

I would recommend to do the same as I did and gather a modem trace and check in Cellular Monitor (and possibly wireshark) to see what kind of battery AT command notifications you get from the modem when it happens.

Best regards,

Michal

RE: Modem Low Level Warning

Stefan Schmidt — Thu, 12 Jun 2025 15:14:27 GMT

Hi Michal,

ähem, I was not aware that this sample exists! :-)

I use a custom application, and actually did the same as you did for testing: Using the PowerProfiler to control the supply to the board.

What I do not understand is why the modem_battery_pofwarn_handler_t is called even if the voltage is clearly above the level of 3000 mV.

Regards

Stefan

RE: Modem Low Level Warning

Michal — Thu, 12 Jun 2025 12:54:35 GMT

Hello Stefan,

I think I have managed to reproduce it with out battery sample. Is it how you tested it as well, or did you use your own custom application?

What I did is slowly change the voltage with a lab power supply.

I went
Normal level -> low level -> normal level and then when I turned the voltage down to low level again, the handler did not react for the second time.

I am reporting this internally as a bug.

Best regards,

Michal

RE: Modem Low Level Warning

Stefan Schmidt — Mon, 19 May 2025 08:56:23 GMT

Hi Michal,

NCS is v2.6.1 and Modem FW is 1.3.5.

Thanks

Stefan

RE: Modem Low Level Warning

Michal — Tue, 13 May 2025 11:39:21 GMT

Hello Stefan,

Sorry for the delay, the ticket got unfortunately a bit displaced. I forgot to ask, which NCS and Modem FW versions are you using?

Best regards,

Michal

RE: Modem Low Level Warning

Michal — Tue, 25 Mar 2025 18:31:09 GMT

Hello Stefan,

I will test it and get back to you.

Best regards,

Michal