1 /*
2 * Copyright (c) 2019 Henrik Brix Andersen <henrik@brixandersen.dk>
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #include <zephyr/drivers/led.h>
8 #include <zephyr/devicetree.h>
9 #include <zephyr/kernel.h>
10 #include <zephyr/logging/log.h>
11
12 LOG_MODULE_REGISTER(main, CONFIG_LOG_DEFAULT_LEVEL);
13
14 #define LED_NODE DT_COMPAT_GET_ANY_STATUS_OKAY(holtek_ht16k33)
15
main(void)16 int main(void)
17 {
18 const struct device *const led = DEVICE_DT_GET(LED_NODE);
19 int i;
20
21 if (!device_is_ready(led)) {
22 LOG_ERR("LED device not ready");
23 return 0;
24 }
25
26 while (1) {
27 LOG_INF("Iterating through all LEDs, turning them on "
28 "one-by-one");
29 for (i = 0; i < 128; i++) {
30 led_on(led, i);
31 k_sleep(K_MSEC(100));
32 }
33
34 for (i = 500; i <= 2000; i *= 2) {
35 LOG_INF("Blinking LEDs with a period of %d ms", i);
36 led_blink(led, 0, i / 2, i / 2);
37 k_msleep(10 * i);
38 }
39 led_blink(led, 0, 0, 0);
40
41 for (i = 100; i >= 0; i -= 10) {
42 LOG_INF("Setting LED brightness to %d%%", i);
43 led_set_brightness(led, 0, i);
44 k_sleep(K_MSEC(1000));
45 }
46
47 LOG_INF("Turning all LEDs off and restoring 100%% brightness");
48 for (i = 0; i < 128; i++) {
49 led_off(led, i);
50 }
51 led_set_brightness(led, 0, 100);
52 }
53 return 0;
54 }
55
