1 /*
2 * Copyright (c) 2023 Phytec Messtechnik GmbH
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #include <zephyr/device.h>
8 #include <zephyr/drivers/led.h>
9 #include <zephyr/kernel.h>
10
11 #include <zephyr/logging/log.h>
12 LOG_MODULE_REGISTER(app, CONFIG_LED_LOG_LEVEL);
13
14 #define NUM_LEDS 9
15 #define DELAY_TIME_ON K_MSEC(1000)
16 #define DELAY_TIME_BREATHING K_MSEC(20)
17
main(void)18 int main(void)
19 {
20 const struct device *const led_dev = DEVICE_DT_GET_ANY(ti_lp5569);
21 uint8_t ch_buf[9] = {0};
22 int i, ret;
23
24 if (!led_dev) {
25 LOG_ERR("No device with compatible ti,lp5569 found");
26 return 0;
27 } else if (!device_is_ready(led_dev)) {
28 LOG_ERR("LED device %s not ready", led_dev->name);
29 return 0;
30 }
31
32 LOG_INF("Found LED device %s", led_dev->name);
33
34 /*
35 * Display a continuous pattern that turns on 9 LEDs at 1 s one by
36 * one until it reaches the end and fades off all LEDs.
37 * Afterwards, all LEDs get blinked once at the same time.
38 */
39
40 LOG_INF("Testing 9 LEDs ..");
41
42 while (1) {
43 /* Turn on LEDs one by one */
44 for (i = 0; i < NUM_LEDS; i++) {
45 ret = led_on(led_dev, i);
46 if (ret) {
47 return ret;
48 }
49
50 k_sleep(DELAY_TIME_ON);
51 }
52
53 /* Turn all LEDs off slowly to demonstrate set_brightness */
54 for (i = 0; i <= 100; i++) {
55 for (int j = 0; j < NUM_LEDS; j++) {
56 ret = led_set_brightness(led_dev, j, 100 - i);
57 if (ret) {
58 return ret;
59 }
60 }
61
62 k_sleep(DELAY_TIME_BREATHING);
63 }
64
65 k_sleep(DELAY_TIME_ON);
66
67 /* Turn on all LEDs at once to demonstrate write_channels */
68 memset(ch_buf, 255, ARRAY_SIZE(ch_buf));
69 ret = led_write_channels(led_dev, 0, ARRAY_SIZE(ch_buf), ch_buf);
70 if (ret) {
71 return ret;
72 }
73
74 k_sleep(DELAY_TIME_ON);
75
76 /* Turn off all LEDs at once to demonstrate write_channels */
77 memset(ch_buf, 0, ARRAY_SIZE(ch_buf));
78 ret = led_write_channels(led_dev, 0, ARRAY_SIZE(ch_buf), ch_buf);
79 if (ret) {
80 return ret;
81 }
82
83 k_sleep(DELAY_TIME_ON);
84 }
85 return 0;
86 }
87
