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https://github.com/espressif/esp-idf.git
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76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
/*
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* SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <string.h>
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#include "esp_gatt_common_api.h"
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#include "esp_bt_main.h"
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#include "esp_gatt_defs.h"
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#include "btc_gatt_common.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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esp_err_t esp_ble_gatt_set_local_mtu (uint16_t mtu)
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{
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btc_msg_t msg = {0};
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btc_ble_gatt_com_args_t arg;
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ESP_BLUEDROID_STATUS_CHECK(ESP_BLUEDROID_STATUS_ENABLED);
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if ((mtu < ESP_GATT_DEF_BLE_MTU_SIZE) || (mtu > ESP_GATT_MAX_MTU_SIZE)) {
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return ESP_ERR_INVALID_SIZE;
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}
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msg.sig = BTC_SIG_API_CALL;
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msg.pid = BTC_PID_GATT_COMMON;
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msg.act = BTC_GATT_ACT_SET_LOCAL_MTU;
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arg.set_mtu.mtu = mtu;
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return (btc_transfer_context(&msg, &arg, sizeof(btc_ble_gatt_com_args_t), NULL, NULL) == BT_STATUS_SUCCESS ? ESP_OK : ESP_FAIL);
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}
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#if (BLE_INCLUDED == TRUE)
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extern UINT16 L2CA_GetFreePktBufferNum_LE(void);
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/**
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* @brief This function is called to get currently sendable packets number on controller,
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* the function is called only in BLE running core and single connection now.
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*
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* @return
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* sendable packets number on controller
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*
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*/
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uint16_t esp_ble_get_sendable_packets_num (void)
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{
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return L2CA_GetFreePktBufferNum_LE();
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}
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/**
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* @brief This function is used to query the number of available buffers for the current connection.
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* When you need to query the current available buffer number, it is recommended to use this API.
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* @param[in] conn_id: current connection id.
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*
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* @return
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* Number of available buffers for the current connection
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*
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*/
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extern UINT16 L2CA_GetCurFreePktBufferNum_LE(UINT16 conn_id);
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uint16_t esp_ble_get_cur_sendable_packets_num (uint16_t connid)
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{
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return L2CA_GetCurFreePktBufferNum_LE(connid);
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}
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#endif
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