198 lines
6.8 KiB
C
198 lines
6.8 KiB
C
// 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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/****************************************************************************
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*
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* This file is for gatt client. It can scan ble device, connect one device,
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*
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****************************************************************************/
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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 "controller.h"
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#include "bt.h"
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#include "bt_trace.h"
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#include "bt_types.h"
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#include "btm_api.h"
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#include "bta_api.h"
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#include "bta_gatt_api.h"
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#include "esp_gap_ble_api.h"
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#include "esp_gattc_api.h"
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#include "esp_gatt_defs.h"
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#include "esp_bt_main.h"
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#define BT_BD_ADDR_STR "%02x:%02x:%02x:%02x:%02x:%02x"
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#define BT_BD_ADDR_HEX(addr) addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]
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esp_gatt_if_t client_if;
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esp_gatt_status_t status = ESP_GATT_ERROR;
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bool connet = false;
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uint16_t simpleClient_id = 0xEE;
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const char device_name[] = "Heart Rate";
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static esp_ble_scan_params_t ble_scan_params = {
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.scan_type = BLE_SCAN_TYPE_ACTIVE,
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.own_addr_type = ESP_PUBLIC_ADDR,
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.scan_filter_policy = BLE_SCAN_FILTER_ALLOW_ALL,
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.scan_interval = 0x50,
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.scan_window = 0x30
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};
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static void esp_gap_cb(uint32_t event, void *param);
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static void esp_gattc_cb(uint32_t event, void *param);
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static void esp_gap_cb(uint32_t event, void *param)
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{
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uint8_t *adv_name = NULL;
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uint8_t adv_name_len = 0;
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switch (event) {
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case ESP_GAP_BLE_SCAN_PARAM_SET_COMPLETE_EVT: {
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//the unit of the duration is second
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uint32_t duration = 10;
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esp_ble_gap_start_scanning(duration);
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break;
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}
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case ESP_GAP_BLE_SCAN_RESULT_EVT: {
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esp_ble_gap_cb_param_t *scan_result = (esp_ble_gap_cb_param_t *)param;
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switch (scan_result->scan_rst.search_evt) {
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case ESP_GAP_SEARCH_INQ_RES_EVT:
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for (int i = 0; i < 6; i++) {
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LOG_INFO("%x:", scan_result->scan_rst.bda[i]);
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}
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LOG_INFO("\n");
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adv_name = esp_ble_resolve_adv_data(scan_result->scan_rst.ble_adv,
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ESP_BLE_AD_TYPE_NAME_CMPL, &adv_name_len);
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LOG_INFO("adv_name_len=%x\n", adv_name_len);
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for (int j = 0; j < adv_name_len; j++) {
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LOG_INFO("%c", adv_name[j]);
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}
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LOG_INFO("\n");
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for (int j = 0; j < adv_name_len; j++) {
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LOG_INFO("%c", device_name[j]);
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}
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LOG_INFO("\n");
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if (adv_name != NULL) {
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if (strcmp((char *)adv_name, device_name) == 0) {
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LOG_INFO("the name eque to Heart Rate.\n");
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if (status == ESP_GATT_OK && connet == false) {
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connet = true;
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LOG_INFO("Connet to the remote device.\n");
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esp_ble_gap_stop_scanning();
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esp_ble_gattc_open(client_if, scan_result->scan_rst.bda, true);
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}
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}
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}
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break;
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case ESP_GAP_SEARCH_INQ_CMPL_EVT:
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break;
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default:
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break;
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}
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break;
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}
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default:
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break;
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}
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}
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static void esp_gattc_cb(uint32_t event, void *param)
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{
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uint16_t conn_id = 0;
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esp_ble_gattc_cb_param_t *p_data = (esp_ble_gattc_cb_param_t *)param;
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LOG_INFO("esp_gattc_cb, event = %x\n", event);
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switch (event) {
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case ESP_GATTC_REG_EVT:
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status = p_data->reg.status;
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client_if = p_data->reg.gatt_if;
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LOG_INFO("status = %x, client_if = %x\n", status, client_if);
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break;
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case ESP_GATTC_OPEN_EVT:
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conn_id = p_data->open.conn_id;
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LOG_INFO("ESP_GATTC_OPEN_EVT conn_id %d, if %d, status %d\n", conn_id, p_data->open.gatt_if, p_data->open.status);
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esp_ble_gattc_search_service(conn_id, NULL);
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break;
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case ESP_GATTC_SEARCH_RES_EVT: {
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esp_gatt_srvc_id_t *srvc_id = &p_data->search_res.srvc_id;
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conn_id = p_data->open.conn_id;
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LOG_INFO("SEARCH RES: conn_id = %x\n", conn_id);
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if (srvc_id->id.uuid.len == ESP_UUID_LEN_16) {
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LOG_INFO("UUID16: %x\n", srvc_id->id.uuid.uuid.uuid16);
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} else if (srvc_id->id.uuid.len == ESP_UUID_LEN_32) {
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LOG_INFO("UUID32: %x\n", srvc_id->id.uuid.uuid.uuid32);
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} else if (srvc_id->id.uuid.len == ESP_UUID_LEN_128) {
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LOG_INFO("UUID128: %x,%x,%x,%x,%x,%x,%x,%x,%x,%x,%x,%x,%x,%x,%x,%x\n", srvc_id->id.uuid.uuid.uuid128[0],
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srvc_id->id.uuid.uuid.uuid128[1], srvc_id->id.uuid.uuid.uuid128[2], srvc_id->id.uuid.uuid.uuid128[3],
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srvc_id->id.uuid.uuid.uuid128[4], srvc_id->id.uuid.uuid.uuid128[5], srvc_id->id.uuid.uuid.uuid128[6],
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srvc_id->id.uuid.uuid.uuid128[7], srvc_id->id.uuid.uuid.uuid128[8], srvc_id->id.uuid.uuid.uuid128[9],
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srvc_id->id.uuid.uuid.uuid128[10], srvc_id->id.uuid.uuid.uuid128[11], srvc_id->id.uuid.uuid.uuid128[12],
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srvc_id->id.uuid.uuid.uuid128[13], srvc_id->id.uuid.uuid.uuid128[14], srvc_id->id.uuid.uuid.uuid128[15]);
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} else {
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LOG_ERROR("UNKNOWN LEN %d\n", srvc_id->id.uuid.len);
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}
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break;
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}
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case ESP_GATTC_SEARCH_CMPL_EVT:
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conn_id = p_data->search_cmpl.conn_id;
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LOG_INFO("SEARCH_CMPL: conn_id = %x, status %d\n", conn_id, p_data->search_cmpl.status);
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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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void ble_client_appRegister(void)
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{
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LOG_INFO("register callback\n");
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//register the scan callback function to the gap moudule
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if ((status = esp_ble_gap_register_callback(esp_gap_cb)) != ESP_OK) {
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LOG_ERROR("gap register error, error code = %x\n", status);
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return;
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}
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//register the callback function to the gattc module
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if ((status = esp_ble_gattc_register_callback(esp_gattc_cb)) != ESP_OK) {
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LOG_ERROR("gattc register error, error code = %x\n", status);
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return;
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}
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esp_ble_gattc_app_register(simpleClient_id);
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esp_ble_gap_set_scan_params(&ble_scan_params);
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}
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void gattc_client_test(void)
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{
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esp_init_bluetooth();
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esp_enable_bluetooth();
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ble_client_appRegister();
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}
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void app_main()
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{
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bt_controller_init();
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gattc_client_test();
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}
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