RE: how to blink led using gpio of nrf51422 dk?

Dave_Avatech — Thu, 05 Jan 2017 00:45:10 GMT

The "experimental ble app blinky" example in the SDK shows how to toggle the LED with a button press.

Or, if you are connecting an LED/resistor to an arbitrary GPIO:

uint8_t led_out = 0;  // led value
uint8_t led_pin = 23;  // led gpio pin number

rf_gpio_cfg_output(led_pin);
while(true)
{
      nrf_gpio_pin_set(led_pin);
     nrf_delay_ms(100);
     nrf_gpio_pin_clear(led_pin);
     nrf_delay_ms(100);
}