1 /* main.c - Application main entry point */
2
3 /*
4 * Copyright (c) 2019 Aaron Tsui <aaron.tsui@outlook.com>
5 *
6 * SPDX-License-Identifier: Apache-2.0
7 */
8
9 #include <zephyr/types.h>
10 #include <stddef.h>
11 #include <string.h>
12 #include <errno.h>
13 #include <zephyr/sys/printk.h>
14 #include <zephyr/sys/byteorder.h>
15 #include <zephyr/kernel.h>
16
17 #include <zephyr/bluetooth/bluetooth.h>
18 #include <zephyr/bluetooth/hci.h>
19 #include <zephyr/bluetooth/conn.h>
20 #include <zephyr/bluetooth/uuid.h>
21 #include <zephyr/bluetooth/gatt.h>
22 #include <zephyr/bluetooth/services/bas.h>
23
24 #include "hts.h"
25
26 static const struct bt_data ad[] = {
27 BT_DATA_BYTES(BT_DATA_FLAGS, (BT_LE_AD_GENERAL | BT_LE_AD_NO_BREDR)),
28 BT_DATA_BYTES(BT_DATA_UUID16_ALL,
29 BT_UUID_16_ENCODE(BT_UUID_HTS_VAL),
30 BT_UUID_16_ENCODE(BT_UUID_DIS_VAL),
31 BT_UUID_16_ENCODE(BT_UUID_BAS_VAL)),
32 };
33
34 static const struct bt_data sd[] = {
35 BT_DATA(BT_DATA_NAME_COMPLETE, CONFIG_BT_DEVICE_NAME, sizeof(CONFIG_BT_DEVICE_NAME) - 1),
36 };
37
connected(struct bt_conn * conn,uint8_t err)38 static void connected(struct bt_conn *conn, uint8_t err)
39 {
40 if (err) {
41 printk("Connection failed, err 0x%02x %s\n", err, bt_hci_err_to_str(err));
42 } else {
43 printk("Connected\n");
44 }
45 }
46
disconnected(struct bt_conn * conn,uint8_t reason)47 static void disconnected(struct bt_conn *conn, uint8_t reason)
48 {
49 printk("Disconnected, reason 0x%02x %s\n", reason, bt_hci_err_to_str(reason));
50 }
51
52 BT_CONN_CB_DEFINE(conn_callbacks) = {
53 .connected = connected,
54 .disconnected = disconnected,
55 };
56
bt_ready(void)57 static void bt_ready(void)
58 {
59 int err;
60
61 printk("Bluetooth initialized\n");
62
63 hts_init();
64
65 err = bt_le_adv_start(BT_LE_ADV_CONN_FAST_1, ad, ARRAY_SIZE(ad), sd, ARRAY_SIZE(sd));
66 if (err) {
67 printk("Advertising failed to start (err %d)\n", err);
68 return;
69 }
70
71 printk("Advertising successfully started\n");
72 }
73
auth_cancel(struct bt_conn * conn)74 static void auth_cancel(struct bt_conn *conn)
75 {
76 char addr[BT_ADDR_LE_STR_LEN];
77
78 bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));
79
80 printk("Pairing cancelled: %s\n", addr);
81 }
82
83 static struct bt_conn_auth_cb auth_cb_display = {
84 .cancel = auth_cancel,
85 };
86
bas_notify(void)87 static void bas_notify(void)
88 {
89 uint8_t battery_level = bt_bas_get_battery_level();
90
91 battery_level--;
92
93 if (!battery_level) {
94 battery_level = 100U;
95 }
96
97 bt_bas_set_battery_level(battery_level);
98 }
99
main(void)100 int main(void)
101 {
102 int err;
103
104 err = bt_enable(NULL);
105 if (err) {
106 printk("Bluetooth init failed (err %d)\n", err);
107 return 0;
108 }
109
110 bt_ready();
111
112 bt_conn_auth_cb_register(&auth_cb_display);
113
114 /* Implement indicate. At the moment there is no suitable way
115 * of starting delayed work so we do it here
116 */
117 while (1) {
118 k_sleep(K_SECONDS(1));
119
120 /* Temperature measurements simulation */
121 hts_indicate();
122
123 /* Battery level simulation */
124 bas_notify();
125 }
126 return 0;
127 }
128
