ee9f5c1784
This way the application can reuse the same callback for multiple CCC since it can track what CCC is affect by checking the attribute pointer. Change-Id: I608da643aea07de26b65d67e6db3268d717d0f53 Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
83 lines
2.1 KiB
C
83 lines
2.1 KiB
C
/** @file
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* @brief BAS Service sample
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*/
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/*
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* Copyright (c) 2016 Intel Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdint.h>
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#include <stddef.h>
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#include <string.h>
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#include <errno.h>
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#include <misc/printk.h>
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#include <misc/byteorder.h>
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#include <zephyr.h>
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#include <bluetooth/bluetooth.h>
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#include <bluetooth/hci.h>
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#include <bluetooth/conn.h>
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#include <bluetooth/uuid.h>
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#include <bluetooth/gatt.h>
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static struct bt_gatt_ccc_cfg blvl_ccc_cfg[CONFIG_BLUETOOTH_MAX_PAIRED] = {};
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static uint8_t simulate_blvl;
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static uint8_t battery = 100;
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static void blvl_ccc_cfg_changed(const struct bt_gatt_attr *attr,
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uint16_t value)
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{
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simulate_blvl = (value == BT_GATT_CCC_NOTIFY) ? 1 : 0;
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}
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static ssize_t read_blvl(struct bt_conn *conn, const struct bt_gatt_attr *attr,
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void *buf, uint16_t len, uint16_t offset)
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{
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const char *value = attr->user_data;
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return bt_gatt_attr_read(conn, attr, buf, len, offset, value,
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sizeof(*value));
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}
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/* Battery Service Declaration */
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static struct bt_gatt_attr attrs[] = {
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BT_GATT_PRIMARY_SERVICE(BT_UUID_BAS),
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BT_GATT_CHARACTERISTIC(BT_UUID_BAS_BATTERY_LEVEL,
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BT_GATT_CHRC_READ | BT_GATT_CHRC_NOTIFY),
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BT_GATT_DESCRIPTOR(BT_UUID_BAS_BATTERY_LEVEL, BT_GATT_PERM_READ,
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read_blvl, NULL, &battery),
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BT_GATT_CCC(blvl_ccc_cfg, blvl_ccc_cfg_changed),
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};
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void bas_init(void)
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{
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bt_gatt_register(attrs, ARRAY_SIZE(attrs));
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}
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void bas_notify(void)
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{
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if (!simulate_blvl) {
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return;
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}
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battery--;
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if (!battery) {
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/* Software eco battery charger */
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battery = 100;
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}
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bt_gatt_notify(NULL, &attrs[2], &battery, sizeof(battery));
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}
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