272 lines
9.3 KiB
C
272 lines
9.3 KiB
C
#include "wx_airsync_prf.h"
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// Copyright 2015-2016 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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#if (WX_AIRSYNC_CFG)
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#include <stdint.h>
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#include <string.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include "bt_target.h"
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#include "bt_trace.h"
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#include "bt_types.h"
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#include "gatt_api.h"
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#include "bta_api.h"
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#include "bta_gatt_api.h"
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#include "bta_gatts_int.h"
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tAIRSYNC_CB_ENV airsync_cb_env;
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/*****************************************************************************
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** Constants
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*****************************************************************************/
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static void airsync_profile_cb(esp_gatts_evt_t event, esp_gatts_t *p_data);
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/*******************************************************************************
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**
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** Function airsync_profile_cb
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**
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** Description the callback function after the profile has been register to the BTA manager module
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**
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** Returns NULL
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**
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*******************************************************************************/
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static void airsync_profile_cb(esp_gatts_evt_t event, esp_gatts_t *p_data)
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{
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esp_gatts_rsp_t rsp;
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esp_bt_uuid_t uuid = {LEN_UUID_16, {ATT_SVC_AIRSYNC}};
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tAirSync_INST *p_inst = &airsync_cb_env.airsync_inst;
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LOG_ERROR("airsync profile cb event = %x\n", event);
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switch (event) {
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case ESP_GATTS_REG_EVT:
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if (p_data->reg_oper.status != BTA_GATT_OK) {
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LOG_ERROR("button profile register failed\n");
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}
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airsync_cb_env.gatt_if = p_data->reg_oper.server_if;
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airsync_cb_env.enabled = true;
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if (p_data->reg_oper.uuid.uu.uuid16 == ATT_SVC_AIRSYNC) {
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AirSync_CreateService();
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}
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break;
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case ESP_GATTS_READ_EVT:
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if (airsync_cb_env.clcb.connected && airsync_cb_env.enabled) {
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//tBTA_GATTS_RSP rsp;
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memset(&rsp, 0, sizeof(tBTA_GATTS_API_RSP));
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rsp.attr_value.handle = p_data->req_data.p_data->read_req.handle;
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rsp.attr_value.len = 2;
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esp_ble_gatts_send_rsp(p_data->req_data.conn_id, p_data->req_data.trans_id,
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p_data->req_data.status, &rsp);
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}
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break;
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case ESP_GATTS_WRITE_EVT:
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if (airsync_cb_env.clcb.connected && airsync_cb_env.enabled) {
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esp_ble_gatts_send_rsp(p_data->req_data.conn_id, p_data->req_data.trans_id,
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p_data->req_data.status, NULL);
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}
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break;
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case ESP_GATTS_CFM_EVT:
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break;
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case ESP_GATTS_CREATE_EVT:
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uuid.uu.uuid16 = ATT_CHAR_AIRSYNC_WIT;
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airsync_cb_env.clcb.cur_srvc_id = p_data->create.service_id;
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airsync_cb_env.is_primery = p_data->create.is_primary;
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//start the airsync service after created
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esp_ble_gatts_start_srvc(p_data->create.service_id);
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//add the frist airsync characteristic --> write characteristic
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esp_ble_gatts_add_char(airsync_cb_env.clcb.cur_srvc_id, &uuid,
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(GATT_PERM_WRITE | GATT_PERM_READ),
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(GATT_CHAR_PROP_BIT_READ | GATT_CHAR_PROP_BIT_WRITE));
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break;
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case ESP_GATTS_ADD_CHAR_EVT:
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if (p_data->add_result.char_uuid.uu.uuid16 == ATT_CHAR_AIRSYNC_WIT) {
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uuid.uu.uuid16 = ATT_CHAR_AIRSYBC_NTF;
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//tBTA_GATT_PERM perm = GATT_PERM_READ;
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//tBTA_GATT_CHAR_PROP prop = (GATT_CHAR_PROP_BIT_READ|GATT_CHAR_PROP_BIT_NOTIFY);
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//save the att handle to the env
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airsync_cb_env.airsync_inst.airsync_wirt_hdl = p_data->add_result.attr_id;
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//add the second airsync characteristic --> Notify characteristic
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esp_ble_gatts_add_char(airsync_cb_env.clcb.cur_srvc_id, &uuid,
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GATT_PERM_READ, (GATT_CHAR_PROP_BIT_READ | GATT_CHAR_PROP_BIT_INDICATE));
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} else if (p_data->add_result.char_uuid.uu.uuid16 == ATT_CHAR_AIRSYBC_NTF) {
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//tBTA_GATT_PERM perm = (GATT_PERM_WRITE|GATT_PERM_WRITE);
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uuid.uu.uuid16 = GATT_UUID_CHAR_CLIENT_CONFIG;
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airsync_cb_env.airsync_inst.airsync_ntf_hdl = p_data->add_result.attr_id;
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esp_ble_gatts_add_char_descr (airsync_cb_env.clcb.cur_srvc_id,
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(GATT_PERM_WRITE | GATT_PERM_WRITE),
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&uuid);
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uuid.uu.uuid16 = ATT_CHAR_AIRSYNC_READ;
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//add the third airsync characteristic --> Read characteristic
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esp_ble_gatts_add_char(airsync_cb_env.clcb.cur_srvc_id, &uuid,
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GATT_PERM_READ,
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GATT_CHAR_PROP_BIT_READ);
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} else if (p_data->add_result.char_uuid.uu.uuid16 == ATT_CHAR_AIRSYNC_READ) {
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airsync_cb_env.airsync_inst.airsync_read_hdl = p_data->add_result.attr_id;
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}
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break;
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case ESP_GATTS_ADD_CHAR_DESCR_EVT:
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if (p_data->add_result.char_uuid.uu.uuid16 == GATT_UUID_CHAR_CLIENT_CONFIG) {
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airsync_cb_env.airsync_inst.airsync_cfg_hdl = p_data->add_result.attr_id;
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}
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break;
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case ESP_GATTS_CONNECT_EVT:
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//set the connection flag to true
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airsync_env_clcb_alloc(p_data->conn.conn_id, p_data->conn.remote_bda);
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break;
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case ESP_GATTS_DISCONNECT_EVT:
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//set the connection flag to true
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airsync_cb_env.clcb.connected = false;
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break;
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case ESP_GATTS_OPEN_EVT:
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break;
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case ESP_GATTS_CLOSE_EVT:
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if (airsync_cb_env.clcb.connected && (airsync_cb_env.clcb.conn_id == p_data->conn.conn_id)) {
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//set the connection channal congested flag to true
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airsync_cb_env.clcb.congest = p_data->congest.congested;
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}
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break;
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case ESP_GATTS_CONGEST_EVT:
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//set the congest flag
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airsync_cb_env.clcb.congest = p_data->congest.congested;
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break;
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default:
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break;
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}
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}
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/*******************************************************************************
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**
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** Function AirSync_CreateService
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**
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** Description Create a Service for the airsync profile
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**
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** Returns NULL
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**
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*******************************************************************************/
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void AirSync_CreateService(void)
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{
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esp_gatts_if_t server_if ;
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esp_bt_uuid_t uuid = {LEN_UUID_16, {ATT_SVC_AIRSYNC}};
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UINT16 num_handle = WX_IDX_NB;
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UINT8 inst = 0x00;
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server_if = airsync_cb_env.gatt_if;
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airsync_cb_env.inst_id = inst;
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esp_ble_gatts_create_srvc(server_if, &uuid, inst, num_handle, true);
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}
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/*******************************************************************************
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**
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** Function airsync_env_clcb_alloc
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**
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** Description The function allocates a GATT profile connection link control block
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**
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** Returns NULL if not found. Otherwise pointer to the connection link block.
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**
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*******************************************************************************/
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tAirSync_CLCB *airsync_env_clcb_alloc (UINT16 conn_id, BD_ADDR remote_bda)
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{
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tAirSync_CLCB *p_clcb = NULL;
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p_clcb = &airsync_cb_env.clcb;
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if (!p_clcb->in_use) {
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p_clcb->in_use = TRUE;
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p_clcb->conn_id = conn_id;
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LOG_ERROR("p_clcb->conn_id = %x\n", conn_id);
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p_clcb->connected = TRUE;
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memcpy(p_clcb->remote_bda, remote_bda, BD_ADDR_LEN);
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}
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return p_clcb;
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}
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/*******************************************************************************
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**
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** Function airsync_env_find_conn_id_by_bd_adddr
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**
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** Description The function searches all LCB with macthing bd address
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**
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** Returns total number of clcb found.
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**
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*******************************************************************************/
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UINT16 airsync_env_find_conn_id_by_bd_adddr(BD_ADDR remote_bda)
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{
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UINT8 i_clcb;
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tAirSync_CLCB *p_clcb = NULL;
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for (i_clcb = 0, p_clcb = &airsync_cb_env.clcb; i_clcb < 1; i_clcb++, p_clcb++) {
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if (p_clcb->in_use && p_clcb->connected && memcmp(p_clcb->remote_bda, remote_bda, BD_ADDR_LEN)) {
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return p_clcb->conn_id;
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}
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}
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return GATT_INVALID_CONN_ID;
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}
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/*******************************************************************************
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**
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** Function airsync_init
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**
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** Description Initializa the GATT Service for airsync profiles.
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**
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*******************************************************************************/
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tGATT_STATUS AirSync_Init(tAIRSYNC_CBACK *call_back)
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{
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esp_bt_uuid_t app_uuid = {LEN_UUID_16, {ATT_SVC_AIRSYNC}};
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if (airsync_cb_env.enabled) {
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LOG_ERROR("airsync svc already initaliezd\n");
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return ESP_GATT_ERROR;
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} else {
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memset(&airsync_cb_env, 0, sizeof(tAIRSYNC_CB_ENV));
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}
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if (call_back != NULL) {
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airsync_cb_env.airsync_inst.p_cback = call_back;
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}
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/* register the airsync profile to the BTA_GATTS module*/
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esp_ble_gatts_app_register(&app_uuid, airsync_profile_cb);
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airsync_cb_env.enabled = TRUE;
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return ESP_GATT_OK;
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}
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#endif ///WX_AIRSYNC_CFG
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