Setting the correct register and reset the pin configuration?

[Emil Jenssen]

Hi,

I've just got an Arduino Nano 33 BLE with the NRF52480 chip on it.

I've been trying to manage the Pin configuration by setting the register values through the Arduino IDE. Quite an experimental way I must say. I tried to do a quick test on how to set a pin to pull-down and I ended up having pin P0.27 as if it had a pull-up resistor. And I'm not sure how to reset the configuration. I'm wondering if you could take a look at the small code and also describe to me how I could reset the pin configuration?

I hope you could aswell pinpoint me to a tutorial to be able to understand the information in the datasheet

Best regards,

Emil Jenssen

[Kenneth]

I don't have any experience with Arduino, so you will need to refer to Arduino documentation on how to configure and use pins.

If you are not using Arduino you can find that nrf_gpio.h show how pins can be configured (e.g. using nrf_gpio_cfg_input(27, NRF_GPIO_PIN_PULLDOWN)):
https://github.com/NordicSemiconductor/nrfx/blob/master/hal/nrf_gpio.h

Best regards,
Kenneth