Cannot use port 1 on nRF52833

[SeanOY]

Hi engineers,

I want to use the pin P1.09(NRF_GPIO_PIN_MAP(1, 9)) as GPIO, but when I initiate it, it seems fail.

I've looked through the relevant issues here, but got nothing.

Cheers,

Sean

[Charlie]

Hi Sean,

Which kind of failure you experienced? Can you provide more details?

Best regards,

Charlie

[SeanOY]

Hi Charlie,

I use function "nrf_gpio_cfg_output(NRF_GPIO_PIN_MAP(1, 9))" to configure it as output state.

And then I watch its register but change nothing.

This is P0.11.

This is P1.09.

Cheers,

Sean

[Charlie]

Hi Sean,

Are you using a custom board or nRF52833DK? I only have an nRF52840DK on hand, but shouldn't have differences in using GPIO. I will get one nRF52833DK tomorrow, before this I want you to test on a common ground.

Can you test with the following main.c modified from  nRF5_SDK_17.0.2_d674dde\examples\peripheral\blinky? You will see LED1 blink and P1.09 toggle every 2 seconds. My nRF52840DK works as expected.

#include <stdbool.h>
#include <stdint.h>
#include "nrf_delay.h"
#include "boards.h"

/**
 * @brief Function for application main entry.
 */
int main(void)
{
    /* Configure board. */
    //bsp_board_init(BSP_INIT_LEDS);
    nrf_gpio_cfg_output(NRF_GPIO_PIN_MAP(0,13));
    nrf_gpio_cfg_output(NRF_GPIO_PIN_MAP(1,9));

    /* Toggle LEDs. */
    while (true)
    {
        for (int i = 0; i < LEDS_NUMBER; i++)
        {
            //bsp_board_led_invert(i);
            nrf_gpio_pin_toggle(NRF_GPIO_PIN_MAP(0,13));
            nrf_gpio_pin_toggle(NRF_GPIO_PIN_MAP(1,9));
            nrf_delay_ms(2000);
        }
    }
}

/**
 *@}
 **/

[SeanOY]

Hi Charlie,

Thanks! It works. But why I cannot configure this pin before, maybe the demo I use has some problem?

Best Regards,

Sean

[Charlie]

I guess so, please check the difference.

[SeanOY]

Thanks, i think the problem is fixed.