Trying to run the RTC sample code from ncs/zephyr/samples/drivers with the ns board.

[Giannis Anastasopoulos]

Dear All,

I am trying to compile and run the ncs/zephyr/samples/drivers on the nrf9160_pca10090ns.

For this reason, I have copy-pasted the file under the ncs/nrf/samples/nrf9160 folder. I also followed the advice in this post in order to allow the rtc to run in the non secure mode.

When I try to open the project in SES, I am getting the following error.

What is it that I am missing? I have been able to run several examples from the driver, including the i2c and the watchdog examples from there.

[Hakon]

Hey,

The rtc sample hasn't been ported yet. If you want a similar functionality you can use the zephyr kernel timer instead.

[Giannis Anastasopoulos]

Hakon thank you for your reply. 

My application needs to transmit some data with utc timestamps. What I intended to do is get the time from Internet every so often (once a day let's say) and then have the rtc counting from the moment I last received my timestamp.

Is there a convinient way of doing this? 

[Hakon]

There is the at+cclk command that you can use to get a timestamp from the network, and as previously mentioned the zephyr kernel API can be used to implement a counter. I linked to the documentation in the previous comment, everything you need to know should be found there.

[Giannis Anastasopoulos]

Thank you for your response Hakon. The result of the CCLK command is the following:

Which is the time that my device has been active and not the network time. So is there a way to get the network time instead of this?

[Giannis Anastasopoulos]

Perhaps, in order to make my situation more clear to you, I have a requirement to send messages with a timestamp, every so often and also, while my application is working, I need to monitor at what moment a certain event occurred. What I noticed is that different networks have different behaviour on the AT+CCLK? command and because I need my application to work universally, I cannot rely on getting my time from the network.

Instead, now I am getting the EPOCH time from my server once a day (let's say) and I want to update that time every second in a power efficient way, so that the device keeps track of the EPOCH time, without querying my server all the time. So I wonder if there is a solution that will allow me to do that while in PSM, or when the device is in sleep mode.

Any suggestions are very much welcome!