102 lines
2.8 KiB
C
102 lines
2.8 KiB
C
/*
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* Copyright (c) 2024 Nordic Semiconductor ASA
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* SPDX-License-Identifier: Apache-2.0
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*/
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#define DT_DRV_COMPAT blink_gpio_led
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#include <zephyr/device.h>
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#include <zephyr/devicetree.h>
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#include <zephyr/drivers/gpio.h>
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#include <zephyr/kernel.h>
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#include <zephyr/logging/log.h>
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#include <app/drivers/blink.h>
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LOG_MODULE_REGISTER(blink_gpio_led, CONFIG_BLINK_LOG_LEVEL);
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struct blink_gpio_led_data {
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struct k_timer timer;
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};
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struct blink_gpio_led_config {
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struct gpio_dt_spec led;
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unsigned int period_ms;
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};
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static void blink_gpio_led_on_timer_expire(struct k_timer *timer)
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{
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const struct device *dev = k_timer_user_data_get(timer);
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const struct blink_gpio_led_config *config = dev->config;
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int ret;
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ret = gpio_pin_toggle_dt(&config->led);
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if (ret < 0) {
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LOG_ERR("Could not toggle LED GPIO (%d)", ret);
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}
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}
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static int blink_gpio_led_set_period_ms(const struct device *dev,
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unsigned int period_ms)
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{
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const struct blink_gpio_led_config *config = dev->config;
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struct blink_gpio_led_data *data = dev->data;
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if (period_ms == 0) {
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k_timer_stop(&data->timer);
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return gpio_pin_set_dt(&config->led, 0);
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}
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k_timer_start(&data->timer, K_MSEC(period_ms), K_MSEC(period_ms));
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return 0;
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}
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static const struct blink_driver_api blink_gpio_led_api = {
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.set_period_ms = &blink_gpio_led_set_period_ms,
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};
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static int blink_gpio_led_init(const struct device *dev)
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{
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const struct blink_gpio_led_config *config = dev->config;
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struct blink_gpio_led_data *data = dev->data;
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int ret;
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if (!gpio_is_ready_dt(&config->led)) {
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LOG_ERR("LED GPIO not ready");
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return -ENODEV;
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}
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ret = gpio_pin_configure_dt(&config->led, GPIO_OUTPUT_INACTIVE);
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if (ret < 0) {
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LOG_ERR("Could not configure LED GPIO (%d)", ret);
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return ret;
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}
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k_timer_init(&data->timer, blink_gpio_led_on_timer_expire, NULL);
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k_timer_user_data_set(&data->timer, (void *)dev);
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if (config->period_ms > 0) {
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k_timer_start(&data->timer, K_MSEC(config->period_ms),
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K_MSEC(config->period_ms));
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}
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return 0;
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}
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#define BLINK_GPIO_LED_DEFINE(inst) \
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static struct blink_gpio_led_data data##inst; \
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\
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static const struct blink_gpio_led_config config##inst = { \
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.led = GPIO_DT_SPEC_INST_GET(inst, led_gpios), \
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.period_ms = DT_INST_PROP_OR(inst, blink_period_ms, 0U), \
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}; \
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\
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DEVICE_DT_INST_DEFINE(inst, blink_gpio_led_init, NULL, &data##inst, \
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&config##inst, POST_KERNEL, \
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CONFIG_BLINK_INIT_PRIORITY, \
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&blink_gpio_led_api);
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DT_INST_FOREACH_STATUS_OKAY(BLINK_GPIO_LED_DEFINE)
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