Advertising timer handler with DSPS

Hi all,

I am looking at DSPS source code with aspects of sleep mode. However, I didnt see advertising timer handler:

int app_adv_timer_handler(ke_msg_id_t const msgid,
void const *param,
ke_task_id_t const dest_id,
ke_task_id_t const src_id)

which is added in the proximity SDK and Smarttag Ref design. So that, How it could control the advertising time with out the metioned handler? Could i add it in the app_sps_device_project.c file to control sleep modes ? I do hope you all could give some recommends!

Thanks,

Chung Tran