Serial LTE modem strange double Ready after wakeup

RE: Serial LTE modem strange double Ready after wakeup

Albrecht Markus Schellenberger — Wed, 06 Oct 2021 05:57:14 GMT

Hello Michal,

Our development team has done some analysis on this, and they are able to reproduce the behaviour you are describing, but not in NCS v1.7.0.

If you are not already have upgraded to v1.7.0, could you please test this patch and check if that solves the issue?

devzone.nordicsemi.com/.../138051_5F00_double_5F00_idle_5F00_wakeup.patch

Thanks and regards,

Markus

RE: Serial LTE modem strange double Ready after wakeup

Albrecht Markus Schellenberger — Tue, 13 Jul 2021 11:19:28 GMT

Okay, thanks! Will be reported to our application team.

Regards,

Markus

RE: Serial LTE modem strange double Ready after wakeup

Michal Mühlpachr — Mon, 12 Jul 2021 12:17:45 GMT

It is observation related to NCS v1.6.0 only.
I make "several pulses" by scratching GND plane on USB connector by wire.
It usually takes 3-5 trys (sleep-wake) to get double Ready from SLM during wakeup.

RE: Serial LTE modem strange double Ready after wakeup

Albrecht Markus Schellenberger — Mon, 12 Jul 2021 11:36:24 GMT

Hello Michal,

is this something you observe in NCS v1.6.0 only, or can you reproduce the behaviour in earlier versions as well?

I might want to be interested in how those “several pulses” look like. Can you elaborate?

Regards,

Markus

RE: Serial LTE modem strange double Ready after wakeup

Michal Mühlpachr — Mon, 12 Jul 2021 09:37:17 GMT