Application timer without enabling soft device

[RVM]

I  am trying to bring up an application that uses the soft device, but not right after power up.

I want to use an application timer to schedule a timeout say 10 minutes after power up, and then I want to enable the soft device and the BLE engine.

Unfortunately I am noticing that if I do not enable the Soft Device (e.g. do not call nrf_sdh_enable_request() ? perhaps) the timer interrupt is never received by my application.

I am using S132 v7.0.1, SDK 16.0.0 on a custom board.

Note that if I enable the Soft Device then the interrupts are received without any issues.

[N Ashelman]

The problem is that the LF (low frequency) clock is not started. (Softdevices do the startup internally).

See the example code for function lfclk_request() in this post:

devzone.nordicsemi.com/.../application-timer-tutorial

[RVM]

Thank you. That helped and I am now able to use the application timers when the Soft Device is not yet enabled.

Cheers
RMV

[N Ashelman]

Great! This one is not obvious...