Queries on Application Timer functionality

RE: Queries on Application Timer functionality

beemavishnu — Fri, 14 Jun 2019 14:42:23 GMT

Sorry Simon, lot of changes I added and at this stage I can't share the code even in private forum.

Anyway I am able to write data into Flash.

Thank you for your support.

RE: Queries on Application Timer functionality

Simon — Fri, 14 Jun 2019 14:39:09 GMT

Could you upload your example, then I can test it myself and understand your problem better. I can make the case private if you would like so.

Best regards,

Simon

RE: Queries on Application Timer functionality

beemavishnu — Thu, 13 Jun 2019 03:33:01 GMT

Hi Simon,

As mentioned above, if I call Flash write within event handler, code gets hanged. To avoid this I set a flag to true in event handler and in ideal loop I will write data into Flash and reset the flag. With this its working fine.

Please let me know is this expected behavior, if not let me know any other alternate approach.

Thanks & Regards
Vishnu Beema

RE: Queries on Application Timer functionality

Simon — Wed, 12 Jun 2019 22:28:53 GMT

I have been quite busy lately, my apologies for that. Have you been able to figure this out?

Best regards,

Simon

RE: Queries on Application Timer functionality

beemavishnu — Thu, 06 Jun 2019 14:49:38 GMT

Hello Simon,

Could you able to cross check with below issue, while writing into Flash within event handler.

RE: Queries on Application Timer functionality

beemavishnu — Tue, 04 Jun 2019 17:49:41 GMT

Sorry, any updates on this query.

I have to set a flag and then in while loop I have to write the data into Flash. Otherwise it hangs without any error.

RE: Queries on Application Timer functionality

beemavishnu — Mon, 03 Jun 2019 14:18:48 GMT

Thank you for your inputs.

Can you please cross check 4). When I call Flash operations inside handle, code getting hanged.

Also please let me know whether handlers will execute in Interrupt context.

RE: Queries on Application Timer functionality

Simon — Mon, 03 Jun 2019 09:35:31 GMT

[quote user=""]1) Using “Application Timer module” how many max timers / handlers can be executed at a time with APP_TIMER_MODE_REPEATED. At application level I need 5 timers. Since RTC1 has CC[0..3] whether I can use only 4 at a time.[/quote]

I am not sure what the maximum amount of timers are, and what the limiting factor is, but I tried adding 6 timers to an application and that worked fine. I don't think APP_TIMER_CONFIG_OP_QUEUE_SIZE is the limiting factor, since I set it to 1 and all the 6 timers still fires. I can look into it further if you would like a more precise answer.

[quote user=""]2) I want to sleep & wakeup periodically for every 30 minutes. For this I need to change PRESCALER. To my understanding there will be only one prescaler for entire timer module. So if I change, will there be any impact on existing timers and SoftDevice (Not sure whether SoftDevice uses Application Timer).[/quote]

The APP_TIMER_CONFIG_RTC_FREQUENCY (RTC prescaler) is not used by the Softdevice

[quote user=""]3) I want to stop LED after 10 blink automatically. In this case with some conditions whether can I call app_timer_stop() within same handler (repeated_timer_handler()).[/quote]

No problem, you can do this

[quote user=""] 4) Whether handler will execute in Interrupt context. I want to read data over TWI and write data into Flash. Whether all there can be called within timer handler.[/quote]

This shouldn’t be a problem

Best regards,

Simon

RE: Queries on Application Timer functionality

beemavishnu — Mon, 03 Jun 2019 09:29:12 GMT

Please update on above queries.

RE: Queries on Application Timer functionality

Simon — Tue, 28 May 2019 16:04:37 GMT

I am sorry for the delay, I will try to provide you with an answer tomorrow.