Declaring timers

RE: Declaring timers

Einar Thorsrud — Mon, 11 May 2020 14:27:08 GMT

Hi Malcolm,

No, that should be good. And just to be clear, CONCAT_2 in turn, is just basic concatenation (##). So if the timer was "my_timer" then you would have "my_timer" and "my_timer_data".

RE: Declaring timers

Malcolm — Mon, 11 May 2020 14:18:46 GMT

Thank you for a prompt response. I have basically followed your method (less CONCAT2). It is helpful to know I did not miss any alternative.

Malcolm

RE: Declaring timers

Einar Thorsrud — Mon, 11 May 2020 13:06:17 GMT

Hi,

There is no recommended way (this is not recommended since it is easy to get things wrong). If you do, remember to look closely at the _APP_TIMER_DEF implementation, or observe the preprocessor output to be sure that you did not miss anything. Assuming you use SDK 16 you are probably using app_timer2, and then this is what you need:

#define _APP_TIMER_DEF(timer_id)                                      \
    static app_timer_t CONCAT_2(timer_id,_data) = { {0} };           \
    static const app_timer_id_t timer_id = &CONCAT_2(timer_id,_data)