178 lines
6.4 KiB
C
178 lines
6.4 KiB
C
// Copyright 2015-2017 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 used for eddystone receiver.
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*
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****************************************************************************/
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include "esp_bt.h"
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#include "nvs_flash.h"
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#include "esp_log.h"
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#include "esp_bt_defs.h"
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#include "esp_bt_main.h"
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#include "esp_gatt_defs.h"
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#include "esp_gattc_api.h"
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#include "esp_gap_ble_api.h"
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#include "freertos/FreeRTOS.h"
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#include "esp_eddystone_protocol.h"
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#include "esp_eddystone_api.h"
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static const char* DEMO_TAG = "EDDYSTONE_DEMO";
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/* declare static functions */
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static void esp_gap_cb(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t* param);
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static void esp_eddystone_show_inform(const esp_eddystone_result_t* res);
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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 = BLE_ADDR_TYPE_PUBLIC,
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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_eddystone_show_inform(const esp_eddystone_result_t* res)
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{
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switch(res->common.frame_type)
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{
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case EDDYSTONE_FRAME_TYPE_UID: {
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ESP_LOGI(DEMO_TAG, "Eddystone UID inform:");
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ESP_LOGI(DEMO_TAG, "Measured power(RSSI at 0m distance):%d dbm", res->inform.uid.ranging_data);
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ESP_LOGI(DEMO_TAG, "EDDYSTONE_DEMO: Namespace ID:0x");
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esp_log_buffer_hex(DEMO_TAG, res->inform.uid.namespace_id, 10);
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ESP_LOGI(DEMO_TAG, "EDDYSTONE_DEMO: Instance ID:0x");
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esp_log_buffer_hex(DEMO_TAG, res->inform.uid.instance_id, 6);
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break;
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}
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case EDDYSTONE_FRAME_TYPE_URL: {
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ESP_LOGI(DEMO_TAG, "Eddystone URL inform:");
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ESP_LOGI(DEMO_TAG, "Measured power(RSSI at 0m distance):%d dbm", res->inform.url.tx_power);
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ESP_LOGI(DEMO_TAG, "URL: %s", res->inform.url.url);
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break;
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}
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case EDDYSTONE_FRAME_TYPE_TLM: {
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ESP_LOGI(DEMO_TAG, "Eddystone TLM inform:");
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ESP_LOGI(DEMO_TAG, "version: %d", res->inform.tlm.version);
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ESP_LOGI(DEMO_TAG, "battery voltage: %d mV", res->inform.tlm.battery_voltage);
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ESP_LOGI(DEMO_TAG, "beacon temperature in degrees Celsius: %6.1f", res->inform.tlm.temperature);
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ESP_LOGI(DEMO_TAG, "adv pdu count since power-up: %d", res->inform.tlm.adv_count);
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ESP_LOGI(DEMO_TAG, "time since power-up: %d s", res->inform.tlm.time);
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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_gap_cb(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t* param)
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{
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switch(event)
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{
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case ESP_GAP_BLE_SCAN_PARAM_SET_COMPLETE_EVT: {
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uint32_t duration = 0;
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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_START_COMPLETE_EVT: {
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if(param->scan_start_cmpl.status != ESP_BT_STATUS_SUCCESS) {
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ESP_LOGE(DEMO_TAG,"Scan start failed");
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}
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else {
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ESP_LOGI(DEMO_TAG,"Start scanning...");
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}
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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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{
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case ESP_GAP_SEARCH_INQ_RES_EVT: {
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esp_eddystone_result_t eddystone_res;
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memset(&eddystone_res, 0, sizeof(eddystone_res));
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esp_err_t ret = esp_eddystone_decode(scan_result->scan_rst.ble_adv, scan_result->scan_rst.adv_data_len, &eddystone_res);
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if (ret) {
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// error:The received data is not an eddystone frame packet or a correct eddystone frame packet.
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// just return
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return;
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} else {
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// The received adv data is a correct eddystone frame packet.
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// Here, we get the eddystone infomation in eddystone_res, we can use the data in res to do other things.
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// For example, just print them:
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ESP_LOGI(DEMO_TAG, "--------Eddystone Found----------");
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esp_log_buffer_hex("EDDYSTONE_DEMO: Device address:", scan_result->scan_rst.bda, ESP_BD_ADDR_LEN);
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ESP_LOGI(DEMO_TAG, "RSSI of packet:%d dbm", scan_result->scan_rst.rssi);
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esp_eddystone_show_inform(&eddystone_res);
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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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break;
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}
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case ESP_GAP_BLE_SCAN_STOP_COMPLETE_EVT:{
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if(param->scan_stop_cmpl.status != ESP_BT_STATUS_SUCCESS) {
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ESP_LOGE(DEMO_TAG,"Scan stop failed");
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}
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else {
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ESP_LOGI(DEMO_TAG,"Stop scan successfully");
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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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void esp_eddystone_appRegister(void)
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{
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esp_err_t status;
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ESP_LOGI(DEMO_TAG,"Register callback");
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/*<! register the scan callback function to the gap module */
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if((status = esp_ble_gap_register_callback(esp_gap_cb)) != ESP_OK) {
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ESP_LOGE(DEMO_TAG,"gap register error,error code = %x",status);
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return;
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}
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}
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void esp_eddystone_init(void)
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{
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esp_bluedroid_init();
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esp_bluedroid_enable();
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esp_eddystone_appRegister();
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}
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void app_main()
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{
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ESP_ERROR_CHECK(nvs_flash_init());
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esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
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esp_bt_controller_init(&bt_cfg);
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esp_bt_controller_enable(ESP_BT_MODE_BTDM);
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esp_eddystone_init();
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/*<! set scan parameters */
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esp_ble_gap_set_scan_params(&ble_scan_params);
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}
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