RE: Help with Blinky example

Vidar Berg — Tue, 07 Dec 2021 12:18:04 GMT

Hello,

Do you have an externally connected LED to P0.14? This pin is assigned to button 2 on the nRF52 DK, so it can't control any of the board LEDs (for pin assignments you can look at the silkscreen on the boards backside).

Either way, the problem with the code you posted is that nrf_gpio_pin_set() gets called immediately after nrf_gpio_pin_clear() with no delay in-between.

Please try to add this delay after turning on the LED:

while(1)
{
    nrf_gpio_pin_set(LED);
    nrf_gpio_pin_set(LED1);
     nrf_delay_ms(500); // Stay ON for 500 ms (LEDs are active low)
    nrf_gpio_pin_clear(LED);
    nrf_gpio_pin_clear(LED1);
    nrf_delay_ms(500); // Stay OFF for 500 ms
}

Hope this helps!

Best regards,

Vidar