ESP-IDF
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Outline
#include <string.h>
#include "esp_gatt_common_api.h"
#include "esp_bt_main.h"
#include "esp_gatt_defs.h"
#include "btc_gatt_common.h"
esp_ble_gatt_set_local_mtu(uint16_t)
esp_ble_get_sendable_packets_num()
esp_ble_get_cur_sendable_packets_num(uint16_t)
Files
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SourceVuESP-IDF Framework and ExamplesESP-IDFcomponents/bt/host/bluedroid/api/esp_gatt_common_api.c
 
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/* * SPDX-FileCopyrightText: 2015-2023 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 *//* ... */ #include <string.h> #include "esp_gatt_common_api.h" #include "esp_bt_main.h" #include "esp_gatt_defs.h" #include "btc_gatt_common.h"5 includes /** * @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 = {0}; btc_ble_gatt_com_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_GATT_COMMON; msg.act = BTC_GATT_ACT_SET_LOCAL_MTU; arg.set_mtu.mtu = mtu; return (btc_transfer_context(&msg, &arg, sizeof(btc_ble_gatt_com_args_t), NULL, NULL) == BT_STATUS_SUCCESS ? ESP_OK : ESP_FAIL); }{ ... } #if (BLE_INCLUDED == TRUE) extern UINT16 L2CA_GetFreePktBufferNum_LE(void); /** * @brief This function is called to get currently sendable packets number on controller, * the function is called only in BLE running core and single connection now. * * @return * sendable packets number on controller * *//* ... */ uint16_t esp_ble_get_sendable_packets_num (void) { return L2CA_GetFreePktBufferNum_LE(); }{ ... } /** * @brief This function is used to query the number of available buffers for the current connection. * When you need to query the current available buffer number, it is recommended to use this API. * @param[in] conn_id: current connection id. * * @return * Number of available buffers for the current connection * *//* ... */ extern UINT16 L2CA_GetCurFreePktBufferNum_LE(UINT16 conn_id); uint16_t esp_ble_get_cur_sendable_packets_num (uint16_t connid) { return L2CA_GetCurFreePktBufferNum_LE(connid); }{ ... } #endif/* ... */
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