arduino-esp32/tools/sdk/include/bluedroid/esp_gatt_common_api.h

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2017-09-12 08:40:52 +02:00
// Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <stdint.h>
#include <stdbool.h>
#include "esp_err.h"
#include "esp_bt_defs.h"
#ifdef __cplusplus
extern "C" {
#endif
// Maximum Transmission Unit used in GATT
#define ESP_GATT_DEF_BLE_MTU_SIZE 23 /* relate to GATT_DEF_BLE_MTU_SIZE in gatt_api.h */
// Maximum Transmission Unit allowed in GATT
#define ESP_GATT_MAX_MTU_SIZE 517 /* relate to GATT_MAX_MTU_SIZE in gatt_api.h */
/**
* @brief This function is called to set local MTU,
* the function is called before BLE connection.
*
* @param[in] mtu: the size of MTU.
*
* @return
* - ESP_OK: success
* - other: failed
*
*/
extern esp_err_t esp_ble_gatt_set_local_mtu (uint16_t mtu);
#ifdef __cplusplus
}
#endif