Tracking My Car Trips Without GPS

1/*==========================================================
2
3     MrDIY  Geolocation - Find Me ( without GPS)
4
5     Getting the API: https://developers.google.com/maps/documentation/geolocation/intro
6
7     Watch the video - https://youtu.be/nHaEYJzduZM
8
9  ==========================================================  */
10
11#include <ESP8266WiFi.h>
12#include <TimeLib.h>
13#include "cert.h"
14
15#define  WIFI_NAME   "ssid"
16#define WIFI_PASS   "password"
17#define API_KEY     "api_key"
18
19const  char*         host = "www.googleapis.com";
20const String        url = "/geolocation/v1/geolocate?key=";
21
22
23/*  ##################### setup ################################ */
24
25void setup()  {
26
27  Serial.begin(115200);
28  Serial.println(); Serial.println(); Serial.println();
29  Serial.println("==================================================");
30  Serial.println("                         MrDIY Geolocation");
31  Serial.println("================================================\
32");
33
34  get_my_location();
35
36}
37
38
39void loop() {}
40
41
42void get_my_location()  {
43
44
45  // Searching for Wifis ------------------------------------------
46  int n = WiFi.scanNetworks();
47
48  Serial.print("------ Scan (");  Serial.print(n);  Serial.println(")-------");
49
50  // Listing Wifis found ------------------------------------------
51  for (int j = 0; j < n; ++j) {
52    Serial.println( WiFi.BSSIDstr(j) );
53  }
54
55
56
57  // Preparing Json needed for API call -----------------------------
58
59  String  jsonString = "{ \\"considerIp\\": \\"false\\", \\"wifiAccessPoints\\": [";
60  for (int j = 0; j < n; ++j) {
61    jsonString += "{";
62    jsonString +=  "\\"macAddress\\":\\"";
63    jsonString += (WiFi.BSSIDstr(j));
64    jsonString  += "\\",";
65    jsonString += "\\"signalStrength\\":";
66    jsonString  += WiFi.RSSI(j);
67    jsonString += ",";
68    jsonString += "\\"channel\\":";
69    jsonString += WiFi.channel(j);
70    if (j < n - 1)  jsonString += "},";
71    else jsonString += "}";
72
73  }
74  jsonString += ("]}");
75  WiFi.scanDelete();
76
77  // Connecting to the API to get a location -----------------------
78
79  WiFi.begin(WIFI_NAME,  WIFI_PASS);
80
81  while (WiFi.status() != WL_CONNECTED) {
82    delay(500);
83  }
84
85  Serial.println("");
86  Serial.println("-------- CERT & TIME--------");
87  setClock();
88  WiFiClientSecure client;
89  BearSSL::X509List cert (GlobalSignCA);
90  client.setTrustAnchors (&cert);
91
92  Serial.println("");
93  Serial.println("--------  API --------");
94  Serial.println("https://" + (String) host + ":443");
95
96
97
98  if (int s = client.connect(host, 443)) {
99    String request = String("POST  ") + String(url) + API_KEY;
100    request += " HTTP/1.1\
\
101";
102    request  += "Host: " + (String)host + "\
\
103";
104    request += "User-Agent: ESP8266\
\
105";
106    request += "Content-Type: application/json\
\
107";
108    request += "Content-Length:  " + String(jsonString.length()) + "\
\
109";
110    request += "Connection: close\
\
111\
\
112";
113    request += jsonString;
114    Serial.println(request);
115    client.println(request);
116  }
117
118  // Parse reply from API call ------------------------------------
119  String response;
120  while (client.connected() && !client.available()) delay(1);
121  while (client.available()) {
122    response += client.readString();
123  }
124  client.stop();
125
126  Serial.println("");
127  Serial.println("-------- Response  --------+");
128  Serial.println(response);
129  Serial.println("+-------------------------");
130
131}
132
133
134void  setClock () {
135
136  configTime (3600, 0, "pool.ntp.org", "time.nist.gov");
137  time_t ntp_now = time (nullptr);
138  while (ntp_now < 8 * 3600 * 2) {
139    delay  (100);
140    ntp_now = time (nullptr);
141  }
142  setTime(ntp_now);
143  struct  tm timeinfo;
144  gmtime_r (&ntp_now, &timeinfo);
145
146}