esp-idf/components/bt/host/bluedroid/api/esp_gatt_common_api.c

76 lines
2.1 KiB
C

/*
* SPDX-FileCopyrightText: 2015-2021 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"
/**
* @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