Setting P0.30/AIN6 as GPIO enable pin

[redcorn32]

Hi. I am trying to make one sensor work on my nrf52840 based board. The problem is that eventhough the enable pin is set high in .dts file, it doesn't work. 

	bq35100@55 {
		compatible = "ti,bq35100";
		reg = <0x55>;
		enable-gpios = <&gpio0 30 GPIO_ACTIVE_HIGH>;
		label = "BQ35100";
	};

I figured out with documentation that I need to reconfigure AIN6 to serve as an GPIO. How do I do that? 

[SwRa]

Hi Igor,

Please take a look at this thread:  CONFIG_NFCT_PINS_AS_GPIOS=y doesn't work 

Regard,

Swathy 

[redcorn32]

I am sorry but it didn't find any solution there.  I've found that this statement fails though: 

if ((NRF_UICR->NFCPINS & UICR_NFCPINS_PROTECT_Msk) == (UICR_NFCPINS_PROTECT_NFC << UICR_NFCPINS_PROTECT_Pos))

What am I missing?

[Jason]

did you try the nrf_gpio functions?

#include <hal/nrf_gpio.h>
#define MY_LED_GREEN_PIN 29

nrf_gpio_cfg(MY_LED_GREEN_PIN, NRF_GPIO_PIN_DIR_OUTPUT, NRF_GPIO_PIN_INPUT_DISCONNECT, NRF_GPIO_PIN_NOPULL, NRF_GPIO_PIN_S0S1, NRF_GPIO_PIN_NOSENSE);

nrf_gpio_pin_clear(MY_LED_GREEN_PIN); // Switch off Green LED
nrf_gpio_pin_set(MY_LED_GREEN_PIN); // Switch on Green LED

#include <hal/nrf_gpio.h>