RE: toggle a pin of nrf52

Martin Lesund — Wed, 14 Mar 2018 14:42:47 GMT

download link to SDKv14.2

RE: toggle a pin of nrf52

kirt — Wed, 14 Mar 2018 09:55:08 GMT

i gone through the step 1,2,6.where can i get nRF5_SDK_14.1.0_04a0bfd

and i am using nRF52Dk as a debugger/programmer.

RE: toggle a pin of nrf52

Martin Lesund — Mon, 12 Mar 2018 14:24:16 GMT

Look at Step 6 in this tutorial

RE: toggle a pin of nrf52

rishi.sikka — Sat, 10 Mar 2018 23:07:17 GMT

Hey Kirt, this shouldn't be a problem at all. I do believe this is also a common question on the forum.

Simply include nrf_gpio.h in your C/C++ source file. This is Nordic's API that will let you interface with board at a high level. You can read more about GPIO here.

I would define a pin at the top of your code like the following.

#include "nrf_delay.h"
#include "nrf_gpio.h"

#define YOUR_PIN 			NRF_GPIO_PIN_MAP(1,3)	// Example connection - P1.03
#define FREQUENcY_MS        500

// in your init function use this to configure the pin: 
nrf_gpio_cfg_output(YOUR_PIN);  /* Initialize with default config of pin */


// probably you will put this in main loop ...

nrf_gpio_pin_toggle(YOUR_PIN);
nrf_delay_ms(FREQUENCY_MS);

// other useful gpio functions 
// nrf_gpio_pin_set(YOUR_PIN);
// nrf_gpio_pin_clear(YOUR_PIN);

The NRF_GPIO_PIN_MAP is a simple macro that converts the Pin # printed on the DK to the appropriate map for the board. The cfg_output simply sets the pin as an output instead of an input (no need for internal pull resistors).

Then use the nrf_delay_ms function to create your frequency to continuously toggle a pin.

Hopefully this helps,

Rishi