49 lines
1.5 KiB
C
49 lines
1.5 KiB
C
// 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 <string.h>
|
|
#include "esp_gatt_common_api.h"
|
|
#include "esp_bt_main.h"
|
|
#include "esp_gatt_defs.h"
|
|
#include "btc_main.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
|
|
*
|
|
*/
|
|
esp_err_t esp_ble_gatt_set_local_mtu (uint16_t mtu)
|
|
{
|
|
btc_msg_t msg;
|
|
btc_ble_main_args_t arg;
|
|
|
|
ESP_BLUEDROID_STATUS_CHECK(ESP_BLUEDROID_STATUS_ENABLED);
|
|
|
|
if ((mtu < ESP_GATT_DEF_BLE_MTU_SIZE) || (mtu > ESP_GATT_MAX_MTU_SIZE)) {
|
|
return ESP_ERR_INVALID_SIZE;
|
|
}
|
|
|
|
msg.sig = BTC_SIG_API_CALL;
|
|
msg.pid = BTC_PID_MAIN_INIT;
|
|
msg.act = BTC_GATT_ACT_SET_LOCAL_MTU;
|
|
arg.set_mtu.mtu = mtu;
|
|
|
|
return (btc_transfer_context(&msg, &arg, sizeof(btc_ble_main_args_t), NULL) == BT_STATUS_SUCCESS ? ESP_OK : ESP_FAIL);
|
|
} |