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/bluetooth/hci.h>
10 #include <zephyr/logging/log.h>
11 #include <zephyr/logging/log_backend_ble.h>
12
13 LOG_MODULE_REGISTER(ble_backend);
14
15
16 static const struct bt_data ad[] = {
17 BT_DATA_BYTES(BT_DATA_FLAGS, (BT_LE_AD_GENERAL | BT_LE_AD_NO_BREDR)),
18 BT_DATA_BYTES(BT_DATA_UUID128_ALL, LOGGER_BACKEND_BLE_ADV_UUID_DATA)
19 };
20
21 static const struct bt_data sd[] = {
22 BT_DATA(BT_DATA_NAME_COMPLETE, CONFIG_BT_DEVICE_NAME, sizeof(CONFIG_BT_DEVICE_NAME) - 1),
23 };
24
start_adv(void)25 static void start_adv(void)
26 {
27 int err;
28
29 err = bt_le_adv_start(BT_LE_ADV_CONN_ONE_TIME, ad, ARRAY_SIZE(ad), sd, ARRAY_SIZE(sd));
30 if (err) {
31 LOG_ERR("Advertising failed to start (err %d)", err);
32 return;
33 }
34
35 LOG_INF("Advertising successfully started");
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 LOG_ERR("Connection failed, err 0x%02x %s", err, bt_hci_err_to_str(err));
42 } else {
43 LOG_INF("Connected");
44 }
45 }
46
disconnected(struct bt_conn * conn,uint8_t reason)47 static void disconnected(struct bt_conn *conn, uint8_t reason)
48 {
49 LOG_INF("Disconnected, reason 0x%02x %s", reason, bt_hci_err_to_str(reason));
50 start_adv();
51 }
52
53 BT_CONN_CB_DEFINE(conn_callbacks) = {
54 .connected = connected,
55 .disconnected = disconnected,
56 };
57
auth_cancel(struct bt_conn * conn)58 static void auth_cancel(struct bt_conn *conn)
59 {
60 char addr[BT_ADDR_LE_STR_LEN];
61
62 bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));
63
64 LOG_INF("Pairing cancelled: %s", addr);
65 }
66
67 static struct bt_conn_auth_cb auth_cb_display = {
68 .cancel = auth_cancel,
69 };
70
backend_ble_hook(bool status,void * ctx)71 void backend_ble_hook(bool status, void *ctx)
72 {
73 ARG_UNUSED(ctx);
74
75 if (status) {
76 LOG_INF("BLE Logger Backend enabled.");
77 } else {
78 LOG_INF("BLE Logger Backend disabled.");
79 }
80 }
81
82
main(void)83 int main(void)
84 {
85 int err;
86
87 LOG_INF("BLE LOG Demo");
88 logger_backend_ble_set_hook(backend_ble_hook, NULL);
89 err = bt_enable(NULL);
90 if (err) {
91 LOG_ERR("Bluetooth init failed (err %d)", err);
92 return 0;
93 }
94
95 bt_conn_auth_cb_register(&auth_cb_display);
96
97 start_adv();
98
99 while (1) {
100 uint32_t uptime_secs = k_uptime_get_32()/1000U;
101
102 LOG_INF("Uptime %d secs", uptime_secs);
103 k_sleep(K_MSEC(1000));
104 }
105 return 0;
106 }
107
