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main.c
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main.c
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/*
* Copyright (c) 2021 Nordic Semiconductor ASA
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/types.h>
#include <stddef.h>
#include <errno.h>
#include <zephyr/kernel.h>
#include <zephyr/sys/printk.h>
#include <zephyr/bluetooth/bluetooth.h>
#include <zephyr/bluetooth/direction.h>
#include <zephyr/sys/byteorder.h>
#include <zephyr/sys/util.h>
/* Length of CTE in unit of 8[us] */
#define CTE_LEN (0x14U)
/* Number of CTE send in single periodic advertising train */
#define PER_ADV_EVENT_CTE_COUNT 5
static void adv_sent_cb(struct bt_le_ext_adv *adv,
struct bt_le_ext_adv_sent_info *info);
static struct bt_le_ext_adv_cb adv_callbacks = {
.sent = adv_sent_cb,
};
static struct bt_le_ext_adv *adv_set;
static struct bt_le_adv_param param =
BT_LE_ADV_PARAM_INIT(BT_LE_ADV_OPT_EXT_ADV |
BT_LE_ADV_OPT_USE_IDENTITY |
BT_LE_ADV_OPT_USE_NAME,
BT_GAP_ADV_FAST_INT_MIN_2,
BT_GAP_ADV_FAST_INT_MAX_2,
NULL);
static struct bt_le_ext_adv_start_param ext_adv_start_param = {
.timeout = 0,
.num_events = 0,
};
static struct bt_le_per_adv_param per_adv_param = {
.interval_min = BT_GAP_ADV_SLOW_INT_MIN,
.interval_max = BT_GAP_ADV_SLOW_INT_MAX,
.options = BT_LE_ADV_OPT_USE_TX_POWER,
};
#if defined(CONFIG_BT_DF_CTE_TX_AOD)
static uint8_t ant_patterns[] = {0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA };
#endif /* CONFIG_BT_DF_CTE_TX_AOD */
struct bt_df_adv_cte_tx_param cte_params = { .cte_len = CTE_LEN,
.cte_count = PER_ADV_EVENT_CTE_COUNT,
#if defined(CONFIG_BT_DF_CTE_TX_AOD)
.cte_type = BT_DF_CTE_TYPE_AOD_2US,
.num_ant_ids = ARRAY_SIZE(ant_patterns),
.ant_ids = ant_patterns
#else
.cte_type = BT_DF_CTE_TYPE_AOA,
.num_ant_ids = 0,
.ant_ids = NULL
#endif /* CONFIG_BT_DF_CTE_TX_AOD */
};
static void adv_sent_cb(struct bt_le_ext_adv *adv,
struct bt_le_ext_adv_sent_info *info)
{
printk("Advertiser[%d] %p sent %d\n", bt_le_ext_adv_get_index(adv),
adv, info->num_sent);
}
void main(void)
{
char addr_s[BT_ADDR_LE_STR_LEN];
struct bt_le_oob oob_local;
int err;
printk("Starting Direction Finding periodic advertising Beacon Demo\n");
/* Initialize the Bluetooth Subsystem */
printk("Bluetooth initialization...");
err = bt_enable(NULL);
if (err) {
printk("failed (err %d)\n", err);
return;
}
printk("success\n");
printk("Advertising set create...");
err = bt_le_ext_adv_create(¶m, &adv_callbacks, &adv_set);
if (err) {
printk("failed (err %d)\n", err);
return;
}
printk("success\n");
printk("Update CTE params...");
err = bt_df_set_adv_cte_tx_param(adv_set, &cte_params);
if (err) {
printk("failed (err %d)\n", err);
return;
}
printk("success\n");
printk("Periodic advertising params set...");
err = bt_le_per_adv_set_param(adv_set, &per_adv_param);
if (err) {
printk("failed (err %d)\n", err);
return;
}
printk("success\n");
printk("Enable CTE...");
err = bt_df_adv_cte_tx_enable(adv_set);
if (err) {
printk("failed (err %d)\n", err);
return;
}
printk("success\n");
printk("Periodic advertising enable...");
err = bt_le_per_adv_start(adv_set);
if (err) {
printk("failed (err %d)\n", err);
return;
}
printk("success\n");
printk("Extended advertising enable...");
err = bt_le_ext_adv_start(adv_set, &ext_adv_start_param);
if (err) {
printk("failed (err %d)\n", err);
return;
}
printk("success\n");
printk("Get extended advertising address...");
err = bt_le_ext_adv_oob_get_local(adv_set, &oob_local);
if (err) {
printk("failed (err %d)\n", err);
return;
}
printk("success\n");
bt_addr_le_to_str(&oob_local.addr, addr_s, sizeof(addr_s));
printk("Started extended advertising as %s\n", addr_s);
}