How to read data from GPIO pin?

RE: How to read data from GPIO pin?

Harsh Jain` — Thu, 29 Sep 2022 21:30:48 GMT

I need to read the input pin on every rising edge. Also, output set and clear is not necessarily required here.

RE: How to read data from GPIO pin?

Kenneth — Thu, 29 Sep 2022 21:14:02 GMT

I think the implementation here will depend much on how fast you need to count and how fast you expect to set/clear the output.

Kenneth

RE: How to read data from GPIO pin?

Harsh Jain` — Thu, 29 Sep 2022 13:40:21 GMT

Actually I need to write code for a counter. I.e. if on PinX an rising edge comes, I will increase the counter by 1.

Any reference for this code. I know, I need to configure some pins as output pin and then set some callback functions which will be called whenever a system gets a rising edge on a particular pin.

RE: How to read data from GPIO pin?

Kenneth — Thu, 29 Sep 2022 13:36:14 GMT

Hi,

You can find the GPIO API doc here : https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/hardware/peripherals/gpio.html

And you have the "Button" sample demonstrating how to use the APIs here: https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/samples/basic/button/README.html

Best regards,
Kenneth