blob: 875129ac185f87d2c42c6cc702a366a9fff5a35e [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 <zephyr/kernel.h>
#include <zephyr/init.h>
#include <zephyr/sys/check.h>
#include <zephyr/bluetooth/bluetooth.h>
#include <zephyr/bluetooth/hci.h>
#include <zephyr/bluetooth/conn.h>
#include <zephyr/bluetooth/uuid.h>
#include <zephyr/bluetooth/gatt.h>
#include <zephyr/bluetooth/services/hrs.h>
#define LOG_LEVEL CONFIG_BT_HRS_LOG_LEVEL
#include <zephyr/logging/log.h>
LOG_MODULE_REGISTER(hrs);
#define GATT_PERM_READ_MASK (BT_GATT_PERM_READ | \
BT_GATT_PERM_READ_ENCRYPT | \
BT_GATT_PERM_READ_AUTHEN)
#define GATT_PERM_WRITE_MASK (BT_GATT_PERM_WRITE | \
BT_GATT_PERM_WRITE_ENCRYPT | \
BT_GATT_PERM_WRITE_AUTHEN)
#ifndef CONFIG_BT_HRS_DEFAULT_PERM_RW_AUTHEN
#define CONFIG_BT_HRS_DEFAULT_PERM_RW_AUTHEN 0
#endif
#ifndef CONFIG_BT_HRS_DEFAULT_PERM_RW_ENCRYPT
#define CONFIG_BT_HRS_DEFAULT_PERM_RW_ENCRYPT 0
#endif
#ifndef CONFIG_BT_HRS_DEFAULT_PERM_RW
#define CONFIG_BT_HRS_DEFAULT_PERM_RW 0
#endif
#define HRS_GATT_PERM_DEFAULT ( \
CONFIG_BT_HRS_DEFAULT_PERM_RW_AUTHEN ? \
(BT_GATT_PERM_READ_AUTHEN | BT_GATT_PERM_WRITE_AUTHEN) : \
CONFIG_BT_HRS_DEFAULT_PERM_RW_ENCRYPT ? \
(BT_GATT_PERM_READ_ENCRYPT | BT_GATT_PERM_WRITE_ENCRYPT) : \
(BT_GATT_PERM_READ | BT_GATT_PERM_WRITE)) \
static uint8_t hrs_blsc;
static sys_slist_t hrs_cbs = SYS_SLIST_STATIC_INIT(&hrs_cbs);
static void hrmc_ccc_cfg_changed(const struct bt_gatt_attr *attr, uint16_t value)
{
ARG_UNUSED(attr);
struct bt_hrs_cb *listener;
bool notif_enabled = (value == BT_GATT_CCC_NOTIFY);
LOG_INF("HRS notifications %s", notif_enabled ? "enabled" : "disabled");
SYS_SLIST_FOR_EACH_CONTAINER(&hrs_cbs, listener, _node) {
if (listener->ntf_changed) {
listener->ntf_changed(notif_enabled);
}
}
}
static ssize_t read_blsc(struct bt_conn *conn, const struct bt_gatt_attr *attr,
void *buf, uint16_t len, uint16_t offset)
{
return bt_gatt_attr_read(conn, attr, buf, len, offset, &hrs_blsc,
sizeof(hrs_blsc));
}
/* Heart Rate Service Declaration */
BT_GATT_SERVICE_DEFINE(hrs_svc,
BT_GATT_PRIMARY_SERVICE(BT_UUID_HRS),
BT_GATT_CHARACTERISTIC(BT_UUID_HRS_MEASUREMENT, BT_GATT_CHRC_NOTIFY,
BT_GATT_PERM_NONE, NULL, NULL, NULL),
BT_GATT_CCC(hrmc_ccc_cfg_changed,
HRS_GATT_PERM_DEFAULT),
BT_GATT_CHARACTERISTIC(BT_UUID_HRS_BODY_SENSOR, BT_GATT_CHRC_READ,
HRS_GATT_PERM_DEFAULT & GATT_PERM_READ_MASK,
read_blsc, NULL, NULL),
BT_GATT_CHARACTERISTIC(BT_UUID_HRS_CONTROL_POINT, BT_GATT_CHRC_WRITE,
HRS_GATT_PERM_DEFAULT & GATT_PERM_WRITE_MASK,
NULL, NULL, NULL),
);
static int hrs_init(void)
{
hrs_blsc = 0x01;
return 0;
}
int bt_hrs_cb_register(struct bt_hrs_cb *cb)
{
CHECKIF(cb == NULL) {
return -EINVAL;
}
sys_slist_append(&hrs_cbs, &cb->_node);
return 0;
}
int bt_hrs_cb_unregister(struct bt_hrs_cb *cb)
{
CHECKIF(cb == NULL) {
return -EINVAL;
}
if (!sys_slist_find_and_remove(&hrs_cbs, &cb->_node)) {
return -ENOENT;
}
return 0;
}
int bt_hrs_notify(uint16_t heartrate)
{
int rc;
static uint8_t hrm[2];
hrm[0] = 0x06; /* uint8, sensor contact */
hrm[1] = heartrate;
rc = bt_gatt_notify(NULL, &hrs_svc.attrs[1], &hrm, sizeof(hrm));
return rc == -ENOTCONN ? 0 : rc;
}
SYS_INIT(hrs_init, APPLICATION, CONFIG_APPLICATION_INIT_PRIORITY);