RE: Aws fota sample and psm

Fabien Comte — Fri, 31 Jan 2020 16:35:43 GMT

Hello,

Thank you for your help.

Håkon Alseth — Tue, 28 Jan 2020 08:15:38 GMT

Hi,

[quote user=""]I want to use PSM with aws fota sample. Do the mqtt level is compatible ?[/quote]

MQTT QoS level is a protocol feature, and will require a longer sequence for ACKing a message, as described here: https://www.hivemq.com/blog/mqtt-essentials-part-6-mqtt-quality-of-service-levels/

This shouldn't interfere with your PSM, unless the active time is very low.

[quote user=""]How to activate psm and check if it s enabled ?[/quote]

This is essentially the AT+CPSMS command.

To check the interval you have dynamically received from the cell tower, you should issue a AT+CEREG=5 and query AT+CEREG?

The last two bit masks will then give a status on the PSM.

Kind regards,

Håkon