using timer with usbd ble uart example

RE: using timer with usbd ble uart example

nikola — Thu, 24 Jun 2021 09:07:00 GMT

thank you very much
I solved my problem by removing my function sendcom in the handler function

RE: using timer with usbd ble uart example

Einar Thorsrud — Tue, 22 Jun 2021 13:48:21 GMT

Isn't that what you want to use the timer for? Then you call it from your (app_timer) timeout handler instead.

RE: using timer with usbd ble uart example

nikola — Tue, 22 Jun 2021 13:17:39 GMT

Okay
how i can implement app_timer in my example
will the app_timer_start call be in while loop where do I call my sendcom function or in the main function?
Do I want to use RTC0 which is already used for bluetooth or else I have to use another RTC because the creation of timer is already done for bluetooth

RE: using timer with usbd ble uart example

nikola — Tue, 22 Jun 2021 13:06:52 GMT

Yes that's it
if I want to remove the while loop function call
where do I want to do it then?

RE: using timer with usbd ble uart example

Einar Thorsrud — Tue, 22 Jun 2021 12:49:10 GMT

Please enable logging and select "Debug" from the build target drop down. Then test again, and the log should give a good indication about what the problem is.

RE: using timer with usbd ble uart example

Einar Thorsrud — Tue, 22 Jun 2021 12:48:21 GMT

Good, then you know it. It is much better to use this here as well. Having more app_timers is no problem (there is no practical limitation to how many you can have)

RE: using timer with usbd ble uart example

Einar Thorsrud — Tue, 22 Jun 2021 12:47:43 GMT

[quote user="nikola "]why am I removing this function[/quote]

I thought the point of all this was to send only every second, is it not? If you continue calling this in your main loop there is not much help in continuing to do so while also doing it every second. Or did I misunderstand something?

RE: using timer with usbd ble uart example

nikola — Tue, 22 Jun 2021 12:14:57 GMT

when I want to test the app_timer function the debugger stops in the lfclk_request function

I have got this error

RE: using timer with usbd ble uart example

nikola — Tue, 22 Jun 2021 11:57:59 GMT

already app_timer is used to send data through the uart or bleutooth

RE: using timer with usbd ble uart example

nikola — Tue, 22 Jun 2021 11:50:42 GMT

why am I removing this function

[quote userid="7377" url="~/f/nordic-q-a/76616/using-timer-with-usbd-ble-uart-example/316458#316458"]Did you remember to remove the vall to sendcom() in your main loop?[/quote]

I firstly try with this example and it doesn't work

[quote userid="7377" url="~/f/nordic-q-a/76616/using-timer-with-usbd-ble-uart-example/316458#316458"]Using a TIMER peripheral should work, but you would be much better off using the timer library (app_timer). This use an RTC so it is low power, and intended for this exact use case. See nRF5 SDK Application Timer Tutorial.[/quote]

RE: using timer with usbd ble uart example

Einar Thorsrud — Tue, 22 Jun 2021 11:43:41 GMT

Hi,

[quote user=""]the "sdk_config.h" content accordingly using the timer "1" and the data still send quickly[/quote]

Did you remember to remove the vall to sendcom() in your main loop?

[quote user=""]For this purpose, I copied the content of the "peripheral_timer" example into "usbd ble uart " example.[/quote]

Using a TIMER peripheral should work, but you would be much better off using the timer library (app_timer). This use an RTC so it is low power, and intended for this exact use case. See nRF5 SDK Application Timer Tutorial.