RE: App timer with 500 ms period filling app scheduler queue

Nathan — Wed, 26 Jul 2017 18:05:45 GMT

In the latest SDK the size of the queue is based on the value you set during the app_sched_init call. The first passed parameter is the maximum size of any queue message, and the second parameter is the number of messages that may be queued before you hit the no memory error. The only requirement should be that you make sure to call app_sched_execute to clear the messages before you hit your limit. Conveniently enough, a 500ms app timer will add one message every 500ms, so it should be easy to calculate how often you have to execute the messages.

All app scheduler messages go onto a common queue, so if you're using the scheduler for other operations such as handling BLE connection events, you have to take their contribution to the queue size into consideration.