blob: 06c87eebe708b1571db8aff1d7f4fc029c059fae [file] [log] [blame]
/** @file
* @brief BAS Service sample
*/
/*
* Copyright (c) 2016 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/types.h>
#include <stddef.h>
#include <string.h>
#include <errno.h>
#include <misc/printk.h>
#include <misc/byteorder.h>
#include <zephyr.h>
#include <bluetooth/bluetooth.h>
#include <bluetooth/hci.h>
#include <bluetooth/conn.h>
#include <bluetooth/uuid.h>
#include <bluetooth/gatt.h>
static struct bt_gatt_ccc_cfg blvl_ccc_cfg[BT_GATT_CCC_MAX] = {};
static u8_t simulate_blvl;
static u8_t battery = 100;
static void blvl_ccc_cfg_changed(const struct bt_gatt_attr *attr,
u16_t value)
{
simulate_blvl = (value == BT_GATT_CCC_NOTIFY) ? 1 : 0;
}
static ssize_t read_blvl(struct bt_conn *conn, const struct bt_gatt_attr *attr,
void *buf, u16_t len, u16_t offset)
{
const char *value = attr->user_data;
return bt_gatt_attr_read(conn, attr, buf, len, offset, value,
sizeof(*value));
}
/* Battery Service Declaration */
static struct bt_gatt_attr attrs[] = {
BT_GATT_PRIMARY_SERVICE(BT_UUID_BAS),
BT_GATT_CHARACTERISTIC(BT_UUID_BAS_BATTERY_LEVEL,
BT_GATT_CHRC_READ | BT_GATT_CHRC_NOTIFY),
BT_GATT_DESCRIPTOR(BT_UUID_BAS_BATTERY_LEVEL, BT_GATT_PERM_READ,
read_blvl, NULL, &battery),
BT_GATT_CCC(blvl_ccc_cfg, blvl_ccc_cfg_changed),
};
static struct bt_gatt_service bas_svc = BT_GATT_SERVICE(attrs);
void bas_init(void)
{
bt_gatt_service_register(&bas_svc);
}
void bas_notify(void)
{
if (!simulate_blvl) {
return;
}
battery--;
if (!battery) {
/* Software eco battery charger */
battery = 100;
}
bt_gatt_notify(NULL, &attrs[2], &battery, sizeof(battery));
}