How to read data from GPIO pin?

[Harsh Jain`]

I am having a N20 Micro Gear Motor with Encoder, I want to read data of c1 and c2 using GPIO pins. Any specificAPI, method or suggestion for this?

I am using nRF5340 along with N20 Micro gear motor, I want to control motor direction, and rotate the motor based on the data coming from the Encoder. Encoder is updating data using c1 and C2 channels.

[Kenneth]

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

[Harsh Jain`]

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.

[Kenneth]

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

[Harsh Jain`]

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