APP_TIMER_TICKS with different PRESCALER

[Henry]

Hi Nordic,

From the topic: APP_TIMER_TICKS value, I've know how to use it, but is it possible to use different prescaler value in the same code?

For example the nRF5_SDK_12.0.0_12f24da\examples\ble_peripheral\ble_app_hrs\main.c:

#define APP_TIMER_PRESCALER              0
#define BATTERY_LEVEL_MEAS_INTERVAL      APP_TIMER_TICKS(2000, APP_TIMER_PRESCALER)
#define HEART_RATE_MEAS_INTERVAL         APP_TIMER_TICKS(1000, APP_TIMER_PRESCALER)

Can I change the macro like below?

#define APP_TIMER_PRESCALER1              0
#define APP_TIMER_PRESCALER2              1000
#define BATTERY_LEVEL_MEAS_INTERVAL      APP_TIMER_TICKS(2000, APP_TIMER_PRESCALER1)
#define HEART_RATE_MEAS_INTERVAL         APP_TIMER_TICKS(1, APP_TIMER_PRESCALER2)

Is the above work normal when calling app_timer_start()?

Thanks.

[Sigurd]

No, you can't use multiple prescaler values. The prescaler is used to set the counter increment frequency for the RTC, and it can't use different frequencies at the same time.

If you want to learn more about application timers, and how to use them, I recommend the Application Timer Tutorial.