266 lines
8.8 KiB
C
266 lines
8.8 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 for iBeacon demo. It supports both iBeacon sender and receiver
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* which is distinguished by macros IBEACON_SENDER and IBEACON_RECEIVER,
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*
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* iBeacon is a trademark of Apple Inc. Before building devices which use iBeacon technology,
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* visit https://developer.apple.com/ibeacon/ to obtain a license.
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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 "nvs_flash.h"
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#include "bt.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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/* Because current ESP IDF version doesn't support scan and adv simultaneously,
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* so iBeacon sender and receiver should not run simultaneously */
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#define IBEACON_SENDER 0
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#define IBEACON_RECEIVER 1
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#define IBEACON_MODE IBEACON_RECEIVER
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static const char* DEMO_TAG = "IBEACON_DEMO";
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/* Major and Minor part are stored in big endian mode in iBeacon packet,
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* need to use this macro to transfer while creating or processing
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* iBeacon data */
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#define ENDIAN_CHANGE_U16(x) ((((x)&0xFF00)>>8) + (((x)&0xFF)<<8))
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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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#if (IBEACON_MODE == IBEACON_RECEIVER)
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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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#elif (IBEACON_MODE == IBEACON_SENDER)
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static esp_ble_adv_params_t ble_adv_params = {
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.adv_int_min = 0x20,
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.adv_int_max = 0x40,
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.adv_type = ADV_TYPE_NONCONN_IND,
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.own_addr_type = BLE_ADDR_TYPE_PUBLIC,
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.channel_map = ADV_CHNL_ALL,
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.adv_filter_policy = ADV_FILTER_ALLOW_SCAN_ANY_CON_ANY,
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};
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#endif
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typedef struct {
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uint8_t flags[3];
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uint8_t length;
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uint8_t type;
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uint16_t company_id;
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uint16_t beacon_type;
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}__attribute__((packed)) esp_ble_ibeacon_head_t;
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typedef struct {
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uint8_t proximity_uuid[16];
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uint16_t major;
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uint16_t minor;
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int8_t measured_power;
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}__attribute__((packed)) esp_ble_ibeacon_vendor_t;
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typedef struct {
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esp_ble_ibeacon_head_t ibeacon_head;
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esp_ble_ibeacon_vendor_t ibeacon_vendor;
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}__attribute__((packed)) esp_ble_ibeacon_t;
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const uint8_t uuid_zeros[ESP_UUID_LEN_128] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
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/* For iBeacon packet format, please refer to Apple "Proximity Beacon Specification" doc */
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/* Constant part of iBeacon data */
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const esp_ble_ibeacon_head_t ibeacon_common_head = {
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.flags = {0x02, 0x01, 0x06},
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.length = 0x1A,
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.type = 0xFF,
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.company_id = 0x004C,
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.beacon_type = 0x1502
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};
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/* Vendor part of iBeacon data*/
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esp_ble_ibeacon_vendor_t vendor_config = {
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.proximity_uuid = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0XFF},
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.major = ENDIAN_CHANGE_U16(0x0001), //Major=0x0001
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.minor = ENDIAN_CHANGE_U16(0x0010), //Minor=0x0010
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.measured_power = 0xC5
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};
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BOOLEAN esp_ble_is_ibeacon_packet (uint8_t *adv_data, uint8_t adv_data_len){
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BOOLEAN result = FALSE;
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false;
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if ((adv_data != NULL) && (adv_data_len == 0x1E)){
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if (!memcmp(adv_data, (uint8_t*)&ibeacon_common_head, sizeof(ibeacon_common_head))){
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result = TRUE;
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}
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}
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return result;
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}
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esp_err_t esp_ble_config_ibeacon_data (esp_ble_ibeacon_vendor_t *vendor_config, esp_ble_ibeacon_t *ibeacon_adv_data){
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if ((vendor_config == NULL) || (ibeacon_adv_data == NULL) || (!memcmp(vendor_config->proximity_uuid, uuid_zeros, sizeof(uuid_zeros)))){
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return ESP_ERR_INVALID_ARG;
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}
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memcpy(&ibeacon_adv_data->ibeacon_head, &ibeacon_common_head, sizeof(esp_ble_ibeacon_head_t));
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memcpy(&ibeacon_adv_data->ibeacon_vendor, vendor_config, sizeof(esp_ble_ibeacon_vendor_t));
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return ESP_OK;
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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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case ESP_GAP_BLE_ADV_DATA_RAW_SET_COMPLETE_EVT:{
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#if (IBEACON_MODE == IBEACON_SENDER)
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esp_ble_gap_start_advertising(&ble_adv_params);
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#endif
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break;
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}
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case ESP_GAP_BLE_SCAN_PARAM_SET_COMPLETE_EVT: {
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#if (IBEACON_MODE == IBEACON_RECEIVER)
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//the unit of the duration is second, 0 means scan permanently
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uint32_t duration = 0;
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esp_ble_gap_start_scanning(duration);
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#endif
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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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//scan start complete event to indicate scan start successfully or failed
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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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break;
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case ESP_GAP_BLE_ADV_START_COMPLETE_EVT:
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//adv start complete event to indicate adv start successfully or failed
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if (param->adv_start_cmpl.status != ESP_BT_STATUS_SUCCESS) {
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ESP_LOGE(DEMO_TAG, "Adv start failed");
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}
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break;
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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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/* Search for BLE iBeacon Packet */
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if (esp_ble_is_ibeacon_packet(scan_result->scan_rst.ble_adv, scan_result->scan_rst.adv_data_len)){
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esp_ble_ibeacon_t *ibeacon_data = (esp_ble_ibeacon_t*)(scan_result->scan_rst.ble_adv);
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ESP_LOGI(DEMO_TAG, "----------iBeacon Found----------");
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esp_log_buffer_hex("IBEACON_DEMO: Device address:", scan_result->scan_rst.bda, BD_ADDR_LEN );
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esp_log_buffer_hex("IBEACON_DEMO: Proximity UUID:", ibeacon_data->ibeacon_vendor.proximity_uuid, ESP_UUID_LEN_128);
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ESP_LOGI(DEMO_TAG, "Major: 0x%04x", ENDIAN_CHANGE_U16(ibeacon_data->ibeacon_vendor.major));
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ESP_LOGI(DEMO_TAG, "Minor: 0x%04x", ENDIAN_CHANGE_U16(ibeacon_data->ibeacon_vendor.minor));
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ESP_LOGI(DEMO_TAG, "Measured power (RSSI at a 1m distance):%d dbm", ibeacon_data->ibeacon_vendor.measured_power);
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ESP_LOGI(DEMO_TAG, "RSSI of packet:%d dbm", scan_result->scan_rst.rssi);
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}
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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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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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case ESP_GAP_BLE_ADV_STOP_COMPLETE_EVT:
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if (param->adv_stop_cmpl.status != ESP_BT_STATUS_SUCCESS){
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ESP_LOGE(DEMO_TAG, "Adv stop failed");
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}
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else {
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ESP_LOGI(DEMO_TAG, "Stop adv successfully");
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}
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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_ibeacon_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 ble_ibeacon_init(void)
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{
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esp_bluedroid_init();
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esp_bluedroid_enable();
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ble_ibeacon_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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ble_ibeacon_init();
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/* set scan parameters */
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#if (IBEACON_MODE == IBEACON_RECEIVER)
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esp_ble_gap_set_scan_params(&ble_scan_params);
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#elif (IBEACON_MODE == IBEACON_SENDER)
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esp_ble_ibeacon_t ibeacon_adv_data;
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esp_err_t status = esp_ble_config_ibeacon_data (&vendor_config, &ibeacon_adv_data);
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if (status == ESP_OK){
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esp_ble_gap_config_adv_data_raw((uint8_t*)&ibeacon_adv_data, sizeof(ibeacon_adv_data));
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}
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else {
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ESP_LOGE(DEMO_TAG, "Config iBeacon data failed, status =0x%x\n", status);
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}
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#endif
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}
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