COUNTING THE NUMBER OF PULSES

RE: COUNTING THE NUMBER OF PULSES

Jørn — Thu, 31 Aug 2017 13:50:51 GMT

PPI is a way to connect two hardware peripherals without involving the CPU core. This allows for faster interaction between the peripherals, and adds autonomy. This way the CPU core can focus on other things (such as maintaining the BLE connection) while the hardware peripherals are working. That way you reduce the amount of CPU time you need to dedicate to the task the peripherals are performing.

RE: COUNTING THE NUMBER OF PULSES

ANKITTY — Thu, 31 Aug 2017 13:21:23 GMT

SO WHY EXACTLY PPI IS USED HERE

RE: COUNTING THE NUMBER OF PULSES

Jørn — Thu, 31 Aug 2017 12:08:04 GMT

Hello ANKITTY

I recommend you look at this post

In your case you would only need one GPIOTE pin configured to generate an event on LowtoHigh, and connect that to a timer set in count mode via PPI. You could then use a timer to trigger an interrupt to read out the number of pulses registered per unit time.

Best regards

Jørn Frøysa