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