ble_app_hrs_c how to add 1 sec timer and goto sleep mode?

[Mike]

It's battery operation so I want to know how to setup 1sec timer and goto sleep_mode(power_down) after 1sec beacon scanning.

I'm using WDT to setup 60sec WDT reset so I want to scan only 1sec then goto sleep mode for 59sec to save battery lifetime.

Currently it works fine.

Power_on_reset

WDT setup to 60sec.

scanning for 60sec.

WDT_reset

scanning for 60sec.

WDT_reset

so on.....repeated

I want to know how to setup additional 1sec. timer and after 1sec. scanning, device goto sleep mode for 59sec.

I'm using S130 softdevice, ble_app_hrs_c and nRF51_SDK_9.0.0

[Mike]

Thanks a lot, now I understand all.

I'm not very proffetional on the code, can you guide me how to add init_app_timer and app_timer_IRQhandler into ble_app_hrs_c source code?

or is there any example code using S130 with app_timer?

I tried to put app_timer_init() but have got lot of error.

Your help is very much appreciated.

[Einar Thorsrud]

Hi,

There are many examples of using the app_timer. The simplest is perhaps the Template application (<SDK>examples\ble_peripheral\ble_app_template\main.c) where it is well explained and all the code is present, event though it is commented out. You can also look at for instance the HTS example (<SDK>\examples\ble_peripheral\ble_app_hts\main.c).