Unable to control GPIO pins in nRF51422

[YASH]

Hello, i am a beginner, i want to configure an LED to be connected on one of the GPIO pins, please help me with the code.

[Joakim Jakobsen]

Hi Verma.

I don't know excactly what you want to do with the LED. But i assume you want it to light up. The easiest way to control the LED is to use the nrf_gpio interface directly.

1. Configure the pin as an output: nrf_gpio_cfg_output(pin_number)
2. Turn on/off the LED:

• nrf_gpio_pin_set(pin_number)
• nrf_gpio_pin_clear(pin_number)

If you want it to blink, I suggest you take a look at this tutorial, which sets up a timer that toggles an LED.

Best regards

Joakim

[YASH]

Thank you so much. Can you help me on how to interface an OLED display 128x32 spi with nRF51422?

[Joakim Jakobsen]

Happy to help! I can see you have another question about the OLED display. I suggest you provide the details thats been asked for and wait for a reply there.