Can't change certain GPIOs

[Alaa]

Hi,

I'm trying to toggle GPIOs 32-35 but it can't be done. Other GPIOs though such as 15,21,30 I change successfully.

Here's my code:

nrf_gpio_cfg_output(BATTERY_GPIO_PIN);
int gpio = nrf_gpio_pin_out_read(BATTERY_GPIO_PIN);
printf("GPIO %d before: %d\r\n",BATTERY_GPIO_PIN, gpio); // ==> 0
nrf_gpio_pin_toggle(BATTERY_GPIO_PIN);
gpio = nrf_gpio_pin_out_read(BATTERY_GPIO_PIN);
printf("GPIO %d after: %d\r\n",BATTERY_GPIO_PIN, gpio); // ==> 0

I saw a solution regarding NFC pins 9 and 10 by defining the macro CONFIG_NFCT_PINS_AS_GPIOS.

Is there a similar solution to GPIO 32? From the datasheet I see it's mapped to DEC2? What is that exactly? Can I disable it?

Thanks!

[Martin Lesund]

Hi Alaa,

I think you are confusing IC pin and GPIO pin number as jing mentions.

Please look at the Pin assignments, and remember to keep in mind these GPIO usage restrictions.

Here is also the connector interface for the nRF52 DK.