Interrupt Based Pulse Counter on nRF52833 dk

RE: Interrupt Based Pulse Counter on nRF52833 dk

ovrebekk — Fri, 05 May 2023 12:36:53 GMT

Glad I could help Abhishek. The best of luck with your project 🙂

RE: Interrupt Based Pulse Counter on nRF52833 dk

starkAbhi — Fri, 05 May 2023 05:43:00 GMT

HI Torbjørn,

Thanks for your response . it is very useful.

Regards Abhishek

RE: Interrupt Based Pulse Counter on nRF52833 dk

ovrebekk — Tue, 02 May 2023 12:55:49 GMT

To calculate the frequency you just have to divide the pulse count with the measurement time.

As an example, if you measure every 100ms just divide the count by 0.1, which is the same as multiplying by 10.

If the measurement time is one second then the pulse count and the frequency is the same, and no conversion is required.

Please note that the accuracy of this method is poor if the pulse count value is small, and you need to adjust the measurement interval according to the expected range of pulses in your application (the lower the pulse count the higher measurement interval you need, generally speaking).

Best regards
Torbjørn

RE: Interrupt Based Pulse Counter on nRF52833 dk

starkAbhi — Tue, 02 May 2023 09:37:35 GMT

Hi Torbjørn,

thanks for Providing the Pulse counter example. its working fine. how can i calculate the frequency from pulse count? could you please guide me through code? what kind of changes are required to calculate frequency?

RE: Interrupt Based Pulse Counter on nRF52833 dk

ovrebekk — Tue, 02 May 2023 07:27:51 GMT

I made a small pulse counter example some time ago, and you can find it here.

If you read the pulse count at a fixed interval you can use that to calculate the frequency.

If you have any questions or comments regarding the example please let me know, and I will do my best to help 🙂

Best regards
Torbjørn