Scheduler and Timer for Thingy 91 using nRF9160 DK

[Adeel]

I had a continuation question to this.

https://devzone.nordicsemi.com/f/nordic-q-a/64457/scheduler-for-thingy-91-using-nrf9160-dk

 Is there any sample tutorial for the nRf91 series regarding the scheduler or the timer application that I could as well look into. Can it be integrated into the existing asset tracker example ?

Thanks :).

[Didrik Rokhaug]

Hi.

What exactly are you trying to achieve?

The nRF Connect SDK is built on top of Zephyr, a real-time operating system.

As such, there is a scheduler automatically built into all the samples.

As for the asset_tracker sample application in particular, it relies heavily on a workqueue. In addition to the workqueue, some of the drivers also create their own threads, so the asset_tracker would not work without the scheduler.

Best regards,

Didrik

[Adeel]

Hi Didrik,

I have a thingy 91 that is sending data to the cloud every 1 hour running the asset tracker application. I am trying to have a scheduler that keeps the device inactive or on a power saving mode (PSM) during the time of no opeartion and only wakes up through an event or external input. As such, I want my device to be active for 1 min , send the data and then go into a sleep mode for 59 mins and wake up in between only if there is external signal or interrupt.                                                                                                                                                                                                                                                             Is it possible to acheive it through AT+CPSMS command by changing RPTAU and RAT times or is there any other way that I can acheive this functionality ?

                                                   

[Didrik Rokhaug]

The scheduler will automatically run the "idle thread" when there is nothing else to do.

The idle thread will put the device to sleep.

Therefore, what you need to do si something like this:

1. request PSM

2. Send your data

3. Sleep for 59 mins

Repeat steps 2 and 3.

The AT+CPSMS command can be used to request PSM from the network, but it will not have any effect on the application processor.

[Adeel]

Hi Didrik,

Thanks for this clarification. I will try this and update if it is done :).