shithub: heymac-node

ref: ad1df2d2a01bd064e643287ff305673dfede3ce3
dir: /boards/xtensa/ttgo_lora32/board_init.c/

/*
 * Copyright (c) 2021 Instituto de Pesquisas Eldorado (eldorado.org.br)
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <zephyr/device.h>
#include <zephyr/drivers/gpio.h>
#include <zephyr/init.h>

#define VEXT_PIN  DT_GPIO_PIN(DT_NODELABEL(vext), gpios)
//#define OLED_RST  DT_GPIO_PIN(DT_NODELABEL(oledrst), gpios)

static int board_ttgo_lora32_v2_init(void)
{
	const struct device *gpio;

	gpio = DEVICE_DT_GET(DT_NODELABEL(gpio0));
	if (!device_is_ready(gpio)) {
		return -ENODEV;
	}

	/* turns external VCC on  */
	gpio_pin_configure(gpio, VEXT_PIN, GPIO_OUTPUT);
	gpio_pin_set_raw(gpio, VEXT_PIN, 0);

	/* turns OLED on */
	/*
	gpio_pin_configure(gpio, OLED_RST, GPIO_OUTPUT);
	gpio_pin_set_raw(gpio, OLED_RST, 1);
	*/

	return 0;
}

SYS_INIT(board_ttgo_lora32_v2_init, PRE_KERNEL_2, CONFIG_GPIO_INIT_PRIORITY);