Skip to content

Commit 40fb2cb

Browse files
lightbulletlightbullet
committed
First version of the ESP8266WiFiConnect library
1 parent 3410505 commit 40fb2cb

File tree

5 files changed

+433
-0
lines changed

5 files changed

+433
-0
lines changed

‎libraries/ESP8266WiFiConnect/ESP8266WifiConnect.cpp

Lines changed: 319 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,319 @@
1+
#include "ESP8266WifiConnect.h"
2+
3+
void ESP8266WifiConnect::handleRoot()
4+
{
5+
if (server.method() == HTTP_GET && !connected)
6+
{
7+
String s = "<html><body>Select from the AP listed below<br>";
8+
s += apHTMLtable;
9+
s += "<form method=\"POST\" action=\"/\">";
10+
s += "SSID:<br>";
11+
s += "<input type=\"text\" length=32 name=\"ssid\"><br>";
12+
s += "Password:<br>";
13+
s += "<input type=\"password\" length=32 name=\"pass\"><br>";
14+
s += "<input type=\"submit\">";
15+
s += "</form></body></html>\r\n\r\n";
16+
17+
server.send(200, "text/html", s.c_str());
18+
delay(10);
19+
Serial.println("Sending 200");
20+
}
21+
else if (server.method() == HTTP_GET && connected)
22+
{
23+
String s = "<html><body>Connected to AP ";
24+
s += ssid;
25+
s += "</body></html>\r\n\r\n";
26+
27+
server.send(200, "text/html", s.c_str());
28+
delay(10);
29+
Serial.println("Sending 200");
30+
31+
finished = true;
32+
}
33+
else
34+
{
35+
ssid = server.arg("ssid");
36+
ssidLength = ssid.length();
37+
password = server.arg("pass");
38+
passLength = password.length();
39+
Serial.println(ssid);
40+
Serial.println(password);
41+
42+
String s = "<html><meta http-equiv=\"refresh\" content=\"10;url=http://192.168.4.1/\"/>Trying to connect in 10 sec. to AP ";
43+
s += ssid;
44+
s += "</html>\r\n\r\n";
45+
46+
server.send(200, "text/html", s.c_str());
47+
delay(10);
48+
Serial.println("Sending 200");
49+
50+
connected = connectAP();
51+
}
52+
}
53+
54+
ESP8266WifiConnect::ESP8266WifiConnect()
55+
{
56+
// Init values
57+
numRetries = 10;
58+
ssidLength = 0;
59+
passLength = 0;
60+
ssid = "";
61+
password = "";
62+
apHTMLtable = "";
63+
server = ESP8266WebServer(80);
64+
finished = false;
65+
connected = false;
66+
}
67+
68+
void ESP8266WifiConnect::begin()
69+
{
70+
// Open serial port for debug output
71+
Serial.begin(115200);
72+
delay(10);
73+
Serial.println();
74+
Serial.println();
75+
76+
// Read EEPROM data
77+
EEPROM.begin(512);
78+
delay(10);
79+
readEEPROM();
80+
81+
// Connect to the AP
82+
int r = 0;
83+
while (r < numRetries && !connected)
84+
{
85+
connected = connectAP();
86+
if(connected)
87+
{
88+
Serial.println("Connected!");
89+
break;
90+
}
91+
else
92+
{
93+
Serial.println("Not connected!");
94+
selectAP();
95+
}
96+
97+
r++;
98+
}
99+
}
100+
101+
bool ESP8266WifiConnect::connectAP()
102+
{
103+
// Init return value
104+
bool result = false;
105+
106+
if(ssidLength == 0)
107+
return result;
108+
109+
// Connect to the AP
110+
Serial.print("Connecting to AP ");
111+
Serial.println(ssid);
112+
WiFi.begin(ssid.c_str(), password.c_str());
113+
114+
int r = 0;
115+
while (r < numRetries)
116+
{
117+
if (WiFi.status() == WL_CONNECTED)
118+
{
119+
result = true;
120+
Serial.println("");
121+
Serial.println("WiFi connected");
122+
break;
123+
}
124+
125+
r++;
126+
delay(500);
127+
Serial.print(".");
128+
}
129+
130+
return result;
131+
}
132+
133+
bool ESP8266WifiConnect::selectAP()
134+
{
135+
// Scan for existing networks
136+
scanNetwork();
137+
138+
// Start the server
139+
std::function<void()> fpHandleRoot = std::bind(&ESP8266WifiConnect::handleRoot, this);
140+
server.on("/", fpHandleRoot);
141+
server.begin();
142+
143+
// Wait for a client to connect
144+
finished = false;
145+
while (!finished)
146+
{
147+
server.handleClient();
148+
}
149+
150+
// Stop the server
151+
server.close();
152+
153+
// Write SSID and password to the EEPROM
154+
writeEEPROM();
155+
156+
return true;
157+
}
158+
159+
void ESP8266WifiConnect::scanNetwork()
160+
{
161+
// Init return value
162+
apHTMLtable = "";
163+
164+
// Set WiFi to station mode and disconnect from an AP if it was previously connected
165+
Serial.println("Setting WiFi mode to STA");
166+
WiFi.mode(WIFI_STA);
167+
WiFi.disconnect();
168+
delay(100);
169+
170+
// WiFi.scanNetworks will return the number of networks found
171+
Serial.println("Scanning network");
172+
int numNetworks = WiFi.scanNetworks();
173+
174+
if(numNetworks > 0)
175+
{
176+
// Create a HTML table for each network found
177+
apHTMLtable += "<table>";
178+
apHTMLtable += "<tr>";
179+
apHTMLtable += "<th>SSID</th>";
180+
apHTMLtable += "<th>Encryption</th>";
181+
apHTMLtable += "<th>Signal strength (dBm)</th>";
182+
apHTMLtable += "</tr>";
183+
for (int i = 0; i < numNetworks; i++)
184+
{
185+
apHTMLtable += "<tr>";
186+
apHTMLtable += "<td>";
187+
apHTMLtable += WiFi.SSID(i);
188+
apHTMLtable += "</td>";
189+
apHTMLtable += "<td>";
190+
apHTMLtable += getEncryptionString(WiFi.encryptionType(i));
191+
apHTMLtable += "</td>";
192+
apHTMLtable += "<td>";
193+
apHTMLtable += WiFi.RSSI(i);
194+
apHTMLtable += "</td>";
195+
apHTMLtable += "</tr>";
196+
}
197+
apHTMLtable += "</table>";
198+
}
199+
else
200+
apHTMLtable = "No networks found!";
201+
202+
// Set WiFi to soft AP mode
203+
delay(100);
204+
Serial.println("Setting WiFi to Soft AP");
205+
WiFi.softAP(ssidAP);
206+
}
207+
208+
String ESP8266WifiConnect::getEncryptionString(uint8_t encryptionType)
209+
{
210+
String type;
211+
212+
if (encryptionType == ENC_TYPE_WEP)
213+
type = "WEP";
214+
else if(encryptionType == ENC_TYPE_TKIP)
215+
type = "WPA2-TKIP";
216+
else if(encryptionType == ENC_TYPE_CCMP)
217+
type = "WPA2-AES";
218+
else if(encryptionType == ENC_TYPE_NONE)
219+
type = "None";
220+
else if(encryptionType == ENC_TYPE_AUTO)
221+
type = "Auto";
222+
else
223+
type = "Unknown";
224+
225+
return type;
226+
}
227+
228+
void ESP8266WifiConnect::readEEPROM()
229+
{
230+
// Init iterator
231+
int it = 0;
232+
ssid = "";
233+
password = "";
234+
235+
// Read the length variable of the SSID data
236+
ssidLength = byte(EEPROM.read(it));
237+
it++;
238+
239+
// Read the SSID data
240+
for (int i = 0; i < ssidLength; i++)
241+
{
242+
ssid += char(EEPROM.read(it));
243+
it++;
244+
}
245+
246+
// Read the length variable of the password data
247+
passLength = byte(EEPROM.read(it));
248+
it++;
249+
250+
// Read the password datai
251+
for (int i = 0; i < passLength; i++)
252+
{
253+
password += char(EEPROM.read(it));
254+
it++;
255+
}
256+
257+
Serial.print("ssid: ");
258+
Serial.println(ssid);
259+
Serial.print("password: ");
260+
Serial.println(password);
261+
Serial.print("ssid length: ");
262+
Serial.println(ssidLength);
263+
Serial.print("password length: ");
264+
Serial.println(passLength);
265+
}
266+
267+
void ESP8266WifiConnect::writeEEPROM()
268+
{
269+
// Init iterator
270+
int it = 0;
271+
272+
// First clear the EEPROM
273+
clearEEPROM();
274+
275+
// Write the length variable of the SSID data
276+
ssidLength = ssid.length();
277+
EEPROM.write(it, ssidLength);
278+
it++;
279+
Serial.print("ssidLength: ");
280+
Serial.println(ssidLength);
281+
282+
// Write the SSID data
283+
for (int i = 0; i < ssidLength; i++)
284+
{
285+
EEPROM.write(it, ssid[i]);
286+
it++;
287+
Serial.println(ssid[i]);
288+
}
289+
290+
// Write the length variable of the password data
291+
passLength = password.length();
292+
EEPROM.write(it, passLength);
293+
it++;
294+
Serial.print("passLength: ");
295+
Serial.println(passLength);
296+
297+
// Write the password data
298+
for (int i = 0; i < passLength; i++)
299+
{
300+
EEPROM.write(it, password[i]);
301+
it++;
302+
Serial.println(password[i]);
303+
}
304+
305+
// Commit
306+
EEPROM.commit();
307+
Serial.println("Finished writing EEPROM");
308+
}
309+
310+
void ESP8266WifiConnect::clearEEPROM()
311+
{
312+
int dataLength = ssidLength + passLength + 2;
313+
for (int i = 0; i < dataLength; ++i)
314+
EEPROM.write(i, 0);
315+
316+
// Commit
317+
EEPROM.commit();
318+
Serial.println("Finished clearing EEPROM");
319+
}

‎libraries/ESP8266WiFiConnect/ESP8266WifiConnect.h

Lines changed: 38 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,38 @@
1+
// ensure this library description is only included once
2+
#ifndef ESP8266WIFICONNECT_H
3+
#define ESP8266WIFICONNECT_H
4+
5+
#include "ESP8266WiFi.h"
6+
#include <WiFiClient.h>
7+
#include <EEPROM.h>
8+
#include <ESP8266WebServer.h>
9+
10+
class ESP8266WifiConnect
11+
{
12+
public:
13+
ESP8266WifiConnect();
14+
void begin();
15+
void handleRoot();
16+
17+
private:
18+
int numRetries;
19+
byte ssidLength;
20+
byte passLength;
21+
ESP8266WebServer server;
22+
String ssid;
23+
String password;
24+
String apHTMLtable;
25+
bool finished;
26+
bool connected;
27+
const char* ssidAP = "WifiConnect";
28+
29+
bool connectAP();
30+
bool selectAP();
31+
void scanNetwork();
32+
String getEncryptionString(uint8_t encryptionType);
33+
void readEEPROM();
34+
void writeEEPROM();
35+
void clearEEPROM();
36+
};
37+
38+
#endif //ESP8266WIFICONNECT_H

‎libraries/ESP8266WiFiConnect/examples/SimpleConnect/SimpleConnect.ino

Lines changed: 14 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,14 @@
1+
#include <ESP8266WifiConnect.h>
2+
3+
ESP8266WifiConnect WifiCon;
4+
5+
void setup() {
6+
// put your setup code here, to run once:
7+
WifiCon.begin();
8+
9+
}
10+
11+
void loop() {
12+
// put your main code here, to run repeatedly:
13+
14+
}

‎libraries/ESP8266WiFiConnect/keywords.txt

Lines changed: 24 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,24 @@
1+
#######################################
2+
# Syntax Coloring Map For Test
3+
#######################################
4+
5+
#######################################
6+
# Datatypes (KEYWORD1)
7+
#######################################
8+
9+
ESP8266WifiConnect KEYWORD1
10+
11+
#######################################
12+
# Methods and Functions (KEYWORD2)
13+
#######################################
14+
15+
begin KEYWORD2
16+
17+
#######################################
18+
# Instances (KEYWORD2)
19+
#######################################
20+
21+
#######################################
22+
# Constants (LITERAL1)
23+
#######################################
24+

0 commit comments

Comments
 (0)