samples/bluetooth/scan_adv/src/main.c

/* main.c - Application main entry point */

/*
 * Copyright (c) 2015-2016 Intel Corporation
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <zephyr/types.h>
#include <stddef.h>
#include <zephyr/sys/printk.h>
#include <zephyr/sys/util.h>

#include <zephyr/bluetooth/bluetooth.h>
#include <zephyr/bluetooth/hci.h>

static uint8_t mfg_data[] = { 0xff, 0xff, 0x00 };

static const struct bt_data ad[] = {
	BT_DATA(BT_DATA_MANUFACTURER_DATA, mfg_data, 3),
};

static void scan_cb(const bt_addr_le_t *addr, int8_t rssi, uint8_t adv_type,
		    struct net_buf_simple *buf)
{
	mfg_data[2]++;
}

void main(void)
{
	struct bt_le_scan_param scan_param = {
		.type       = BT_HCI_LE_SCAN_PASSIVE,
		.options    = BT_LE_SCAN_OPT_NONE,
		.interval   = 0x0010,
		.window     = 0x0010,
	};
	int err;

	printk("Starting Scanner/Advertiser Demo\n");

	/* Initialize the Bluetooth Subsystem */
	err = bt_enable(NULL);
	if (err) {
		printk("Bluetooth init failed (err %d)\n", err);
		return;
	}

	printk("Bluetooth initialized\n");

	err = bt_le_scan_start(&scan_param, scan_cb);
	if (err) {
		printk("Starting scanning failed (err %d)\n", err);
		return;
	}

	do {
		k_sleep(K_MSEC(400));

		/* Start advertising */
		err = bt_le_adv_start(BT_LE_ADV_NCONN, ad, ARRAY_SIZE(ad),
				      NULL, 0);
		if (err) {
			printk("Advertising failed to start (err %d)\n", err);
			return;
		}

		k_sleep(K_MSEC(400));

		err = bt_le_adv_stop();
		if (err) {
			printk("Advertising failed to stop (err %d)\n", err);
			return;
		}
	} while (1);
}