f1c4eda373
- add esp_ble_gatt_set_local_mtu( ) API - modify esp_ble_gattc_config_mtu(esp_gatt_if_t gattc_if, uint16_t conn_id) - modify gattc demo
47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
// Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD
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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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// 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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#include <stdint.h>
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#include <stdbool.h>
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#include "esp_err.h"
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#include "esp_bt_defs.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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// Maximum Transmission Unit used in GATT
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#define ESP_GATT_DEF_BLE_MTU_SIZE 23 /* relate to GATT_DEF_BLE_MTU_SIZE in gatt_api.h */
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// Maximum Transmission Unit allowed in GATT
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#define ESP_GATT_MAX_MTU_SIZE 517 /* relate to GATT_MAX_MTU_SIZE in gatt_api.h */
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/**
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* @brief This function is called to set local MTU,
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* the function is called before BLE connection.
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*
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* @param[in] mtu: the size of MTU.
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*
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* @return
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* - ESP_OK: success
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* - other: failed
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*
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*/
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extern esp_err_t esp_ble_gatt_set_local_mtu (uint16_t mtu);
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#ifdef __cplusplus
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}
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#endif
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