53 lines
1.0 KiB
C
53 lines
1.0 KiB
C
/** @file
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* @brief Button Service sample
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*/
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/*
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* Copyright (c) 2019 Marcio Montenegro <mtuxpe@gmail.com>
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "led_svc.h"
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#include <zephyr/kernel.h>
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#include <zephyr/drivers/gpio.h>
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#include <zephyr/logging/log.h>
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LOG_MODULE_REGISTER(led_svc);
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static const struct gpio_dt_spec led = GPIO_DT_SPEC_GET(DT_ALIAS(led0), gpios);
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static bool led_state; /* Tracking state here supports GPIO expander-based LEDs. */
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static bool led_ok;
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void led_update(void)
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{
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if (!led_ok) {
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return;
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}
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led_state = !led_state;
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LOG_INF("Turn %s LED", led_state ? "on" : "off");
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gpio_pin_set(led.port, led.pin, led_state);
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}
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int led_init(void)
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{
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int ret;
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led_ok = gpio_is_ready_dt(&led);
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if (!led_ok) {
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LOG_ERR("Error: LED on GPIO %s pin %d is not ready",
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led.port->name, led.pin);
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return -ENODEV;
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}
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ret = gpio_pin_configure_dt(&led, GPIO_OUTPUT_INACTIVE);
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if (ret < 0) {
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LOG_ERR("Error %d: failed to configure GPIO %s pin %d",
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ret, led.port->name, led.pin);
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}
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return ret;
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}
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