1 /*
2 * Copyright (c) 2023 Phytec Messtechnik GmbH
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #include <zephyr/kernel.h>
8 #include <zephyr/sys/util_macro.h>
9 #include <zephyr/drivers/sensor.h>
10 #include <zephyr/device.h>
11 #include <zephyr/pm/device.h>
12 #include <zephyr/sys/printk.h>
13
14 /* getting all devices from device tree with alias "prox_sensor?" */
15 #define PROX_ALIASES(i) DT_ALIAS(_CONCAT(prox_sensor, i))
16 #define PROX_DEVICES(i, _) \
17 IF_ENABLED(DT_NODE_EXISTS(PROX_ALIASES(i)),\
18 (DEVICE_DT_GET(PROX_ALIASES(i)),))
19
20 /* creating a list with the first 10 devices */
21 static const struct device *prox_devices[] = {
22 LISTIFY(10, PROX_DEVICES, ())
23 };
24
print_prox_data(void)25 void print_prox_data(void)
26 {
27 struct sensor_value pdata;
28
29 for (int i = 0; i < ARRAY_SIZE(prox_devices); i++) {
30 const struct device *dev = prox_devices[i];
31
32 if (sensor_sample_fetch(dev)) {
33 printk("Failed to fetch sample from %s\n", dev->name);
34 }
35
36 sensor_channel_get(dev, SENSOR_CHAN_PROX, &pdata);
37 printk("Proximity on %s: %d\n", dev->name, pdata.val1);
38 }
39 }
40
main(void)41 int main(void)
42 {
43 printk("Proximity sensor sample application\n");
44 printk("Found %d proximity sensor(s): ", ARRAY_SIZE(prox_devices));
45 for (int i = 0; i < ARRAY_SIZE(prox_devices); i++) {
46 printk("%s ", prox_devices[i]->name);
47 }
48 printk("\n");
49
50 while (true) {
51 k_sleep(K_MSEC(2000));
52 print_prox_data();
53 }
54 return 0;
55 }
56
