1 /*
2 * Copyright (c) 2023 Victor Chavez
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #include <zephyr/kernel.h>
8 #include <zephyr/bluetooth/gatt.h>
9 #include <zephyr/logging/log.h>
10 #include <zephyr/logging/log_backend_ble.h>
11
12 LOG_MODULE_REGISTER(ble_backend);
13
14
15 static const struct bt_data ad[] = {
16 BT_DATA_BYTES(BT_DATA_FLAGS, (BT_LE_AD_GENERAL | BT_LE_AD_NO_BREDR)),
17 BT_DATA_BYTES(BT_DATA_UUID128_ALL, LOGGER_BACKEND_BLE_ADV_UUID_DATA)
18 };
19
start_adv(void)20 static void start_adv(void)
21 {
22 int err;
23
24 err = bt_le_adv_start(BT_LE_ADV_CONN_NAME, ad, ARRAY_SIZE(ad), NULL, 0);
25 if (err) {
26 LOG_ERR("Advertising failed to start (err %d)", err);
27 return;
28 }
29
30 LOG_INF("Advertising successfully started");
31 }
32
connected(struct bt_conn * conn,uint8_t err)33 static void connected(struct bt_conn *conn, uint8_t err)
34 {
35 if (err) {
36 LOG_ERR("Connection failed (err 0x%02x)", err);
37 } else {
38 LOG_INF("Connected");
39 }
40 }
41
disconnected(struct bt_conn * conn,uint8_t reason)42 static void disconnected(struct bt_conn *conn, uint8_t reason)
43 {
44 LOG_INF("Disconnected (reason 0x%02x)", reason);
45 start_adv();
46 }
47
48 BT_CONN_CB_DEFINE(conn_callbacks) = {
49 .connected = connected,
50 .disconnected = disconnected,
51 };
52
auth_cancel(struct bt_conn * conn)53 static void auth_cancel(struct bt_conn *conn)
54 {
55 char addr[BT_ADDR_LE_STR_LEN];
56
57 bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));
58
59 LOG_INF("Pairing cancelled: %s", addr);
60 }
61
62 static struct bt_conn_auth_cb auth_cb_display = {
63 .cancel = auth_cancel,
64 };
65
backend_ble_hook(bool status,void * ctx)66 void backend_ble_hook(bool status, void *ctx)
67 {
68 ARG_UNUSED(ctx);
69
70 if (status) {
71 LOG_INF("BLE Logger Backend enabled.");
72 } else {
73 LOG_INF("BLE Logger Backend disabled.");
74 }
75 }
76
77
main(void)78 int main(void)
79 {
80 int err;
81
82 LOG_INF("BLE LOG Demo");
83 logger_backend_ble_set_hook(backend_ble_hook, NULL);
84 err = bt_enable(NULL);
85 if (err) {
86 LOG_ERR("Bluetooth init failed (err %d)", err);
87 return 0;
88 }
89
90 bt_conn_auth_cb_register(&auth_cb_display);
91
92 start_adv();
93
94 while (1) {
95 uint32_t uptime_secs = k_uptime_get_32()/1000U;
96
97 LOG_INF("Uptime %d secs", uptime_secs);
98 k_sleep(K_MSEC(1000));
99 }
100 return 0;
101 }
102
