blob: 08ce43b43d0cb3321757552b4581701a6d0b6fb9 [file] [log] [blame]
/** @file
* @brief HRS 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 hrmc_ccc_cfg[BT_GATT_CCC_MAX] = {};
static u8_t simulate_hrm;
static u8_t heartrate = 90;
static u8_t hrs_blsc;
static void hrmc_ccc_cfg_changed(const struct bt_gatt_attr *attr,
u16_t value)
{
simulate_hrm = (value == BT_GATT_CCC_NOTIFY) ? 1 : 0;
}
static ssize_t read_blsc(struct bt_conn *conn, const struct bt_gatt_attr *attr,
void *buf, u16_t len, u16_t offset)
{
return bt_gatt_attr_read(conn, attr, buf, len, offset, &hrs_blsc,
sizeof(hrs_blsc));
}
/* Heart Rate Service Declaration */
static struct bt_gatt_attr attrs[] = {
BT_GATT_PRIMARY_SERVICE(BT_UUID_HRS),
BT_GATT_CHARACTERISTIC(BT_UUID_HRS_MEASUREMENT, BT_GATT_CHRC_NOTIFY),
BT_GATT_DESCRIPTOR(BT_UUID_HRS_MEASUREMENT, BT_GATT_PERM_READ, NULL,
NULL, NULL),
BT_GATT_CCC(hrmc_ccc_cfg, hrmc_ccc_cfg_changed),
BT_GATT_CHARACTERISTIC(BT_UUID_HRS_BODY_SENSOR, BT_GATT_CHRC_READ),
BT_GATT_DESCRIPTOR(BT_UUID_HRS_BODY_SENSOR, BT_GATT_PERM_READ,
read_blsc, NULL, NULL),
BT_GATT_CHARACTERISTIC(BT_UUID_HRS_CONTROL_POINT, BT_GATT_CHRC_WRITE),
/* TODO: Add write permission and callback */
BT_GATT_DESCRIPTOR(BT_UUID_HRS_CONTROL_POINT, BT_GATT_PERM_READ, NULL,
NULL, NULL),
};
static struct bt_gatt_service hrs_svc = BT_GATT_SERVICE(attrs);
void hrs_init(u8_t blsc)
{
hrs_blsc = blsc;
bt_gatt_service_register(&hrs_svc);
}
void hrs_notify(void)
{
static u8_t hrm[2];
/* Heartrate measurements simulation */
if (!simulate_hrm) {
return;
}
heartrate++;
if (heartrate == 160) {
heartrate = 90;
}
hrm[0] = 0x06; /* uint8, sensor contact */
hrm[1] = heartrate;
bt_gatt_notify(NULL, &attrs[2], &hrm, sizeof(hrm));
}