Hardware timer in counting mode. nRF Connect SDK.

RE: Hardware timer in counting mode. nRF Connect SDK.

SerhiiR — Mon, 13 Mar 2023 12:13:01 GMT

Okay, thanks for your help!

RE: Hardware timer in counting mode. nRF Connect SDK.

runsiv — Mon, 13 Mar 2023 12:06:14 GMT

Hi, it should be as easy as changing the value in "pulse_count_init(11);" in the main function

Regards
Runar

RE: Hardware timer in counting mode. nRF Connect SDK.

SerhiiR — Mon, 13 Mar 2023 11:10:25 GMT

Hi runsiv

Thank you, this is really an example that can help me solve my problem.
I checked it and it works.

I have one question about it, I'm sure I can figure it out on my own, but maybe I can get a quick answer from you.

In the example, the pin on which the pulses will be coming is set by the function pulse_count_init(pin);

This pin belongs to port gpio0, is there any way to set the pin which belongs to port gpio1?

RE: Hardware timer in counting mode. nRF Connect SDK.

runsiv — Mon, 13 Mar 2023 08:38:51 GMT

Hi Serhii

I have managed to dig up this example created by one of my coworkers which should do most of what you are after. I think the only this missing in converting the count to frequency. And its running on NCS.

https://github.com/too1/ncs-nrfx-pulse-count-example/blob/master/src/main.c

Just a disclaimer: Beware that this code/configuration is not fully tested or qualified and should be considered provided “as-is”. Please test it with your application and let me know if you find any issues

Cheers

Runar

RE: Hardware timer in counting mode. nRF Connect SDK.

SerhiiR — Fri, 10 Mar 2023 14:36:02 GMT

Thank you runsiv

The maximum frequency depends on what electrical components will be put in the node responsible for generating pulses, now I can not tell you a specific frequency.

I will study the link above, and will also look forward to perhaps a more recent example(or information) using Zephyr and the nRF Connect SDK.

RE: Hardware timer in counting mode. nRF Connect SDK.

runsiv — Fri, 10 Mar 2023 14:13:21 GMT

Hi,

I understand, do you know the maximum frequency?

A similar question was once posted and given this explanation Frequency Measurement

This was however using the nrf5 SDK, I will see I can find any better explanations however it will give you a idea of what to do.

Regards

Runar

RE: Hardware timer in counting mode. nRF Connect SDK.

SerhiiR — Fri, 10 Mar 2023 13:49:21 GMT

runsiv Thanks for the quick response.

I will look into it in more detail, but on a quick look, I did not see the use of a timer.

In my application, the timer is needed to eventually get the frequency at which the pulses come to the nRF52840 pin.

RE: Hardware timer in counting mode. nRF Connect SDK.

runsiv — Fri, 10 Mar 2023 13:30:48 GMT

Hi,

I think the nrfx driver for the GPIOE would be a better option for you https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrfx/drivers/gpiote/driver.html

I would take a look at examples mentioned in this question for a place to start RE: nRF5340 GPIOE

Regards

Runar