1 /* main.c - Application main entry point */
2
3 /*
4 * Copyright (c) 2023 Nordic Semiconductor ASA
5 *
6 * SPDX-License-Identifier: Apache-2.0
7 */
8
9 #include <stdint.h>
10 #include <stddef.h>
11
12 #include <zephyr/kernel.h>
13 #include <zephyr/device.h>
14
15 #include <zephyr/drivers/gpio.h>
16
17 #include <zephyr/sys/util.h>
18 #include <zephyr/sys/printk.h>
19
20 #include <zephyr/bluetooth/ead.h>
21 #include <zephyr/bluetooth/conn.h>
22
23 #include <zephyr/logging/log.h>
24
25 #include "common.h"
26
27 LOG_MODULE_DECLARE(ead_central_sample, CONFIG_BT_EAD_LOG_LEVEL);
28
29 /*
30 * Get button configuration from the devicetree sw0 alias. This is mandatory.
31 */
32 #define SW0_NODE DT_ALIAS(sw0)
33 #if !DT_NODE_HAS_STATUS(SW0_NODE, okay)
34 #error "Unsupported board: sw0 devicetree alias is not defined"
35 #endif
36 static const struct gpio_dt_spec button = GPIO_DT_SPEC_GET_OR(SW0_NODE, gpios, {0});
37 static struct gpio_callback button_cb_data;
38
39 extern int run_central_sample(int get_passkey_confirmation(struct bt_conn *conn),
40 uint8_t *received_data, size_t received_data_size,
41 struct key_material *keymat);
42
43 static struct k_poll_signal button_pressed_signal;
44
button_pressed(const struct device * dev,struct gpio_callback * cb,uint32_t pins)45 static void button_pressed(const struct device *dev, struct gpio_callback *cb, uint32_t pins)
46 {
47 LOG_DBG("Button pressed...");
48
49 k_poll_signal_raise(&button_pressed_signal, 0);
50 k_sleep(K_SECONDS(1));
51 k_poll_signal_reset(&button_pressed_signal);
52 }
53
get_passkey_confirmation(struct bt_conn * conn)54 static int get_passkey_confirmation(struct bt_conn *conn)
55 {
56 int err;
57
58 printk("Confirm passkey by pressing button at %s pin %d...\n", button.port->name,
59 button.pin);
60
61 await_signal(&button_pressed_signal);
62
63 err = bt_conn_auth_passkey_confirm(conn);
64 if (err) {
65 LOG_DBG("Failed to confirm passkey.");
66 return -1;
67 }
68
69 printk("Passkey confirmed.\n");
70
71 return 0;
72 }
73
setup_btn(void)74 static int setup_btn(void)
75 {
76 int ret;
77
78 k_poll_signal_init(&button_pressed_signal);
79
80 if (!gpio_is_ready_dt(&button)) {
81 LOG_ERR("Error: button device %s is not ready", button.port->name);
82 return -1;
83 }
84
85 ret = gpio_pin_configure_dt(&button, GPIO_INPUT);
86 if (ret != 0) {
87 LOG_ERR("Error %d: failed to configure %s pin %d", ret, button.port->name,
88 button.pin);
89 return -1;
90 }
91
92 ret = gpio_pin_interrupt_configure_dt(&button, GPIO_INT_EDGE_TO_ACTIVE);
93 if (ret != 0) {
94 LOG_ERR("Error %d: failed to configure interrupt on %s pin %d", ret,
95 button.port->name, button.pin);
96 return -1;
97 }
98
99 gpio_init_callback(&button_cb_data, button_pressed, BIT(button.pin));
100 gpio_add_callback(button.port, &button_cb_data);
101 LOG_DBG("Set up button at %s pin %d", button.port->name, button.pin);
102
103 return 0;
104 }
105
main(void)106 int main(void)
107 {
108 int err;
109
110 err = setup_btn();
111 if (err) {
112 return 0;
113 }
114
115 LOG_DBG("Starting central sample...");
116
117 (void)run_central_sample(get_passkey_confirmation, NULL, 0, NULL);
118
119 return 0;
120 }
121
