// 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. #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" #include "button_pro.h" #include "prf_defs.h" #if (BUT_PROFILE_CFG) #define ARRAY_SIZE(x) (sizeof(x)/sizeof((x)[0])) button_env_cb_t button_cb_env; /***************************************************************************** ** Constants *****************************************************************************/ static void button_profile_cb(esp_gatts_evt_t event, esp_gatts_t *p_data); /******************************************************************************* ** ** Function button_profile_cb ** ** Description the callback function after the profile has been register to the BTA manager module ** ** Returns NULL ** *******************************************************************************/ static void button_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_BUTTON}}; but_inst_t *p_inst = &button_cb_env.button_inst; uint8_t net_event = 0xff; uint8_t len = 0; uint8_t *p_rec_data = NULL; //LOG_ERROR("p_data->status = %x\n",p_data->status); //if(p_data->status != BTA_GATT_OK){ // LOG_ERROR("button profile register failed\n"); // return; //} LOG_ERROR("button profile cb event = %x\n", event); switch (event) { case ESP_GATTS_REG_EVT: LOG_ERROR("p_data->reg_oper.status = %x\n", p_data->reg_oper.status); LOG_ERROR("(p_data->reg_oper.uuid.uu.uuid16=%x\n", p_data->reg_oper.uuid.uu.uuid16); if (p_data->reg_oper.status != BTA_GATT_OK) { LOG_ERROR("button profile register failed\n"); } button_cb_env.gatt_if = p_data->reg_oper.server_if; button_cb_env.enabled = true; //button_cb_env.button_inst.app_id = p_data->reg_oper.uuid; //create the button service to the service data base. if (p_data->reg_oper.uuid.uu.uuid16 == ATT_SVC_BUTTON) { Button_CreateService(); } break; case ESP_GATTS_READ_EVT: //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: esp_ble_gatts_send_rsp(p_data->req_data.conn_id, p_data->req_data.trans_id, p_data->req_data.status, NULL); LOG_ERROR("Received button data:"); for (int i = 0; i < p_data->req_data.p_data->write_req.len; i++) { LOG_ERROR("%x", p_data->req_data.p_data->write_req.value[i]); } LOG_ERROR("\n"); if (p_data->req_data.p_data->write_req.handle == button_cb_env.button_inst.but_wirt_hdl) { p_rec_data = &p_data->req_data.p_data->write_req.value[0]; // button_msg_notify(len,p_rec_data); (*p_inst->p_cback)(button_cb_env.button_inst.app_id, net_event, len, p_rec_data); } break; case ESP_GATTS_CFM_EVT: break; case ESP_GATTS_CREATE_EVT: //tBT_UUID uuid_butt_write; uuid.uu.uuid16 = ATT_CHAR_BUTTON_WIT; //tBTA_GATT_PERM perm = (GATT_PERM_WRITE|GATT_PERM_READ); //tBTA_GATT_CHAR_PROP prop = (GATT_CHAR_PROP_BIT_READ|GATT_CHAR_PROP_BIT_WRITE); //uuid = {LEN_UUID_16, {ATT_SVC_BUTTON}}; button_cb_env.clcb.cur_srvc_id = p_data->create.service_id; button_cb_env.is_primery = p_data->create.is_primary; //uuid = {LEN_UUID_16, {ATT_CHAR_BUTTON_WIT}}; //start the button service after created esp_ble_gatts_start_srvc(p_data->create.service_id); //add the frist button characteristic --> write characteristic esp_ble_gatts_add_char(button_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_BUTTON_WIT) { uuid.uu.uuid16 = ATT_CHAR_BUTTON_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 button_cb_env.button_inst.but_wirt_hdl = p_data->add_result.attr_id; //add the frist button characteristic --> Notify characteristic esp_ble_gatts_add_char(button_cb_env.clcb.cur_srvc_id, &uuid, GATT_PERM_READ, (GATT_CHAR_PROP_BIT_READ | GATT_CHAR_PROP_BIT_NOTIFY)); } else if (p_data->add_result.char_uuid.uu.uuid16 == ATT_CHAR_BUTTON_NTF) { // add the gattc config descriptor to the notify charateristic //tBTA_GATT_PERM perm = (GATT_PERM_WRITE|GATT_PERM_WRITE); uuid.uu.uuid16 = GATT_UUID_CHAR_CLIENT_CONFIG; button_cb_env.button_inst.but_ntf_hdl = p_data->add_result.attr_id; esp_ble_gatts_add_char_descr (button_cb_env.clcb.cur_srvc_id, (GATT_PERM_WRITE | GATT_PERM_WRITE), &uuid); } break; case ESP_GATTS_ADD_CHAR_DESCR_EVT: if (p_data->add_result.char_uuid.uu.uuid16 == GATT_UUID_CHAR_CLIENT_CONFIG) { button_cb_env.button_inst.but_cfg_hdl = p_data->add_result.attr_id; } ///Start advertising LOG_ERROR("\n*******Start sent the ADV.*************\n"); //esp_ble_start_advertising (&adv_params); //BTA_GATTS_Listen(button_cb_env.gatt_if, true, NULL); break; case ESP_GATTS_CONNECT_EVT: LOG_ERROR("############BUTTON CONNCET EVT################\n"); //esp_ble_stop_advertising(); //set the connection flag to true button_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 button_cb_env.clcb.connected = false; break; case ESP_GATTS_OPEN_EVT: ///stop the advertising after connected break; case ESP_GATTS_CLOSE_EVT: if (button_cb_env.clcb.connected && (button_cb_env.clcb.conn_id == p_data->conn.conn_id)) { //set the connection channal congested flag to true button_cb_env.clcb.congest = p_data->congest.congested; } break; case ESP_GATTS_CONGEST_EVT: break; default: break; } } /******************************************************************************* ** ** Function Button_CreateService ** ** Description Create a Service for the button profile ** ** Returns NULL ** *******************************************************************************/ void Button_CreateService(void) { esp_gatts_if_t server_if ; esp_bt_uuid_t uuid = {LEN_UUID_16, {ATT_SVC_BUTTON}}; uint16_t num_handle = KEY_IDX_NB; uint8_t inst = 0x00; server_if = button_cb_env.gatt_if; button_cb_env.inst_id = inst; //if(!button_cb_env.enabled) //{ // LOG_ERROR("button service added error."); //} esp_ble_gatts_create_srvc(server_if, &uuid, inst, num_handle, true); } /******************************************************************************* ** ** Function button_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. ** *******************************************************************************/ but_clcb_t *button_env_clcb_alloc (uint16_t conn_id, BD_ADDR remote_bda) { but_clcb_t *p_clcb = NULL; p_clcb = &button_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 button_env_find_conn_id_by_bd_adddr ** ** Description The function searches all LCB with macthing bd address ** ** Returns total number of clcb found. ** *******************************************************************************/ uint16_t button_env_find_conn_id_by_bd_adddr(BD_ADDR remote_bda) { uint8_t i_clcb; but_clcb_t *p_clcb = NULL; for (i_clcb = 0, p_clcb = &button_cb_env.clcb; i_clcb < BUTT_MAX_APPS; 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 button_env_clcb_dealloc ** ** Description The function deallocates a GATT profile connection link control block ** ** Returns True the deallocation is successful ** *******************************************************************************/ BOOLEAN button_env_clcb_dealloc(uint16_t conn_id) { uint16_t i_clcb = 0; but_clcb_t *p_clcb = NULL; for (i_clcb = 0, p_clcb = &button_cb_env.clcb; i_clcb < 1; i_clcb++, p_clcb++) { if (p_clcb->in_use && p_clcb->connected && (p_clcb->conn_id == conn_id)) { memset(p_clcb, 0, sizeof(but_clcb_t)); return TRUE; } } return FALSE; } /******************************************************************************* ** ** Function button_init ** ** Description Initializa the GATT Service for button profiles. ** *******************************************************************************/ esp_gatt_status_t button_init (but_prf_cb_t call_back) { tBT_UUID app_uuid = {LEN_UUID_16, {ATT_SVC_BUTTON}}; LOG_ERROR("\n=============================button_init==============================================\n"); if (button_cb_env.enabled) { LOG_ERROR("button svc already initaliezd\n"); return ESP_GATT_ERROR; } else { memset(&button_cb_env, 0, sizeof(button_env_cb_t)); } if (call_back != NULL) { button_cb_env.button_inst.p_cback = call_back; } /* register the button profile to the BTA_GATTS module*/ esp_ble_gatts_app_register(&app_uuid, button_profile_cb); button_cb_env.enabled = TRUE; return ESP_GATT_OK; } void button_disable(uint16_t connid) { button_env_clcb_dealloc(connid); } void button_msg_notify(uint16_t len, uint8_t *button_msg) { BOOLEAN conn_status = button_cb_env.clcb.connected; uint16_t conn_id = button_cb_env.clcb.conn_id; uint16_t attr_id = button_cb_env.button_inst.but_ntf_hdl; //notify rsp==false; indicate rsp==true. BOOLEAN rsp = false; if (!conn_status && button_cb_env.clcb.congest) { LOG_ERROR("the conneciton for button profile has been loss\n"); return; } esp_ble_gatts_hdl_val_indica (conn_id, attr_id, len, button_msg, rsp); } #endif ///BUT_PROFILE_CFG