nrF52 IOT SDK Run function periodically

RE: nrF52 IOT SDK Run function periodically

amjabb — Tue, 01 Aug 2017 18:46:20 GMT

Thank you for your help. I was able to continue using the RTC1 peripheral with the app_timer working along side the iot_time. For anyone who is looking at this as well I am sending up to five messages periodically using app_time, however I am doing significant data validation on the receiving end.

RE: nrF52 IOT SDK Run function periodically

bjorn-spockeli — Mon, 31 Jul 2017 14:36:31 GMT

It appears that the iot_timer and the app_timer uses the same RTC periperal (RTC1). The app_timer library is hardcoded to use RTC so I would not recommend modifying it. Instead I would use RTC2 directly with the nrf_drv_rtc.c and use that to call your periodic functions. See the RTC peripheral example in the examples\peripheral\rtc folder.

RE: nrF52 IOT SDK Run function periodically

amjabb — Fri, 28 Jul 2017 17:39:16 GMT

I attempted following the tutorial on app_timer and it seems to be working, however it is never switching back to my iot timer once the timer is turned on. Also I should mention that the function which I am sending periodically are coap requests, so perhaps they are bound to the iot_timer?

RE: nrF52 IOT SDK Run function periodically

amjabb — Fri, 28 Jul 2017 16:48:35 GMT

Would this work with the iot_timer running at the same time, also would I be able to change the period at which it runs dynamically or does it just initialize it once?

RE: nrF52 IOT SDK Run function periodically

bjorn-spockeli — Fri, 28 Jul 2017 11:20:39 GMT

I think the easiest approach is to use the application timer library(app_timer.c) to create repeating timers and call you functions periodically from their timeout callbacks.