zmk_mf68/app/boards/arm/nrfmicro/pinmux.c

/*
 * Copyright (c) 2020 The ZMK Contributors
 *
 * SPDX-License-Identifier: MIT
 */

#include <kernel.h>
#include <device.h>
#include <init.h>
#include <drivers/gpio.h>
#include <sys/sys_io.h>
#include <devicetree.h>

static int pinmux_nrfmicro_init(struct device *port) {
    ARG_UNUSED(port);

    struct device *p1 = device_get_binding("GPIO_1");

#if CONFIG_BOARD_NRFMICRO_13
    struct device *p0 = device_get_binding("GPIO_0");
    // enable EXT_VCC (use 0 for nRFMicro 1.3, use 1 for nRFMicro 1.1)
    gpio_pin_configure(p1, 9, GPIO_OUTPUT);
    gpio_pin_set(p1, 9, 0);

#if CONFIG_BOARD_NRFMICRO_CHARGER
    gpio_pin_configure(p0, 5, GPIO_OUTPUT);
    gpio_pin_set(p0, 5, 0);
#else
    gpio_pin_configure(p0, 5, GPIO_INPUT);
#endif

#else
    // enable EXT_VCC (use 0 for nRFMicro 1.3, use 1 for nRFMicro 1.1)
    gpio_pin_configure(p1, 9, GPIO_OUTPUT);
    gpio_pin_set(p1, 9, 1);
#endif
    return 0;
}

SYS_INIT(pinmux_nrfmicro_init, APPLICATION, CONFIG_APPLICATION_INIT_PRIORITY);