pin_number for congiguring the GPIOs

[mio]

hi! I'm trying to use the following to configure the GPIOs in nRF52DK for the LED blinky.

nrf_gpio_cfg_output(pin_number)

But I'm not sure what number should I use for the "pin_number". I found the following GPIOs for LEDs.

Part         GPIO

LED1      P0.13

LED2      P0.14

LED3      P0.15

LED4      P0.16

For example, which number should I use for the "pin_number" when I use "LED1(P0.13)"? 

[awneil]

It's the xx number in P0.xx

An easy way to check would be to look in the board header file; eg, for the PCA10040 that's pca10040.h:

// LEDs definitions for PCA10040
#define LEDS_NUMBER    4

#define LED_START      17
#define LED_1          17
#define LED_2          18
#define LED_3          19
#define LED_4          20
#define LED_STOP       20

which corresponds to:

Part	GPIO	Short
LED 1	P0.17	SB5
LED 2	P0.18	SB6
LED 3	P0.19	SB7
LED 4	P0.20	SB8

infocenter.nordicsemi.com/.../hw_btns_leds.html

[mio]

Thank you so much for your quick replying.It's so helpful!