How to power on LED in the nRF SDK for Thread and Zigbee

[purvisb]

I'm working with an nRF52840-MDK from MakerDiary in the nRF SDK for Thread and Zigbee. I would like to power on an LED when the chip is powered on. Here's a snippet of my code

/**@brief Function for initializing GPIO pins
 *
 */
static void nrf_gpio_init(void)
{
    nrf_gpio_cfg_input(sensorPin, NRF_GPIO_PIN_NOPULL);
    nrf_gpio_cfg_output(22);
    nrf_gpio_pin_set(22);
    nrf_gpio_pin_write(22, 1);
    //bsp_board_led_on(BSP_LED_0);
    
}



static void leds_init(void)
{
    bsp_board_init(BSP_INIT_LEDS);
}



static void nrf_bsp_init(void){
    uint32_t err_code = bsp_init(BSP_INIT_LEDS, NULL);
    APP_ERROR_CHECK(err_code);
}

This does not seem to work. I tried two methods I found with the bsp_board_led_on function and I tried just using the GPIO driver - neither worked. Please advise.

[Charlie]

Hi Purvisb,

I checked the nRF52840 MDK USB Dongle V1.0 Schematic, the pin should be set to low if you want to light the LED.

I also suggest you try the blinky example to confirm there is no hardware issue.

Charlie