These registers are used when a GPIOTE channel is connected to an input GPIO pin. , EVENTS_IN: these 32-bit event registers are updated when an event happens in a GPIOTE channel 0, …, 7, respectively. Configure operation in input that will trigger IN event in event mode.When writing to OUT task register, the operation that will be performed depending on CONFIG register. The OUT task can set, clear or toggle an output pin. Configure operation in task mode when OUT task is triggered.Initial value of GPIO pin when in task mode.GPIO pin: to select which GPIO pin is connected to the GPIOTE Channel.Use event mode when GPIOTE channel is connected to an input pin, and use task mode when GPIOTE Channel is connected to an output pin. Mode: To configure GPIOTE channel in event mode or task mode., CONFIG: These registers configures GPIOTE channel 0 to 7, respectively, including:

GPIOTE Output Pin <- GPIOTE Channel <- Tasks This is done by writing to a GPIOTE task register.

If a GPIOTE channel is connected to a GPIO output pin, it can control its digital output (e.g.

GPIO Input Pin -> GPIOTE Channel -> Events

If a GPIOTE channel is connected to a GPIO Input Pin, it can generate events on the input state change (rising edge, falling edge or any change).

Each channel can be configured to connect to a GPIO pin. GPIOTE is a peripheral which has 8 channels. You can connect a GPIO pin to a GPIOTE channel and configure it to generate an interrupt on the GPIO pin state change.

GPIOTE can generate interrupt when an event happens.

Using tasks and events allow a peripheral to trigger another peripheral without CPU intervention, hence you can use GPIOTE (in combination with PPI) to implement interesting low power applications.

Here are some reasons why would you might want to use GPIOTE in your project: The GPIOTE peripheral in nRF52 provides a way for accessing GPIO pins using tasks and events.

Adafruit Feather nRF52 Bluefruit LE – nRF52832Īffiliate Disclosure: When you click on links in this section and make a purchase, this may result in this site earning a commission at no extra cost to you.

To compile and run your code on real nRF52 hardware, it is recommended that you have a nRF52 development kit such as

Build a project using GPIOTE to control digital input and output ports.Some commonly used APIs in nrfx_gpiote library.How to include nrfx_gpiote in your project.The nrfx_gpiote driver in nRF52 SDK to interact with GPIOTE.Why you might want to use GPIOTE in your project.In this article, I will discuss the GPIOTE ( General Purpose Input Output Tasks and Events) peripheral in nRF52. There’s another way to interact with digital I/O ports of nRF52 which involves tasks and events. In previous article, I have introduced APIs to control GPIO ports of nRF52 using nrf_gpio.h driver in nRF5 SDK.

Nrf52 totem pole output