implement nrf5-calendar-example in nrf51 and sdk12.3

[nguyen huy]

Hello guys, i want to implement nrf5-calendar-example in nrf51822 with SDK 12.3. 

This library can use RTC0/RTC1/RTC2. But i have only RTC0 and this RTC0 is for SD (am i right?). How can i implement this library ?  

[ovrebekk]

Hi 

You mean you are using RTC1 for something else?

Do you have the app_timer module in your example?
If so you can setup a 1 second callback through the app_timer library, and use that to update the second counter in nrf_calendar. 

It is also possible to use a TIMER module to trigger nrf_calendar every second, but doing this will increase the average current consumption significantly, so if you plan to run from battery this is not a good solution. 

Best regards
Torbjørn

[nguyen huy]

Hi, i dont understand too much about the  nrf5-calendar-example, i just know that i can change RTC in marco. But I used  app_timer as you said and time.h to create my own calender and it works well. Thank you for suggestion.  

[ovrebekk]

Good to hear you found a solution. I will close the case then