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wifi_connect_tool.h
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wifi_connect_tool.h
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#ifndef _WIFI_CONNECT_TOOL_H_
#define _WIFI_CONNECT_TOOL_H_
#include <ESP8266WiFi.h>
#include <DNSServer.h>
#include <ESP8266WebServer.h>
#include <EEPROM.h>
#include <FS.h>
#define LED 2
int Signal_filtering = -200;
String Hostname = "ESP8266";
String smart_data = "";
int size_data = 0; //WIFI数据长度
String wifiname="";
String wifipsw="";
int wifiname_len; // wifi名的长度
void write_eeprom() //写入函数
{
while (1)
{
wifiname_len = wifiname.length(); //获取wifi名的长度
if (wifiname_len < 9) {//判断wifi名是否为个位数，是则在前面补零
smart_data = String("0") + String(wifiname_len) + String(size_data) + String (wifiname.c_str()) + String(wifipsw.c_str());
size_data = String(smart_data).length();
smart_data = String("0") + String(wifiname_len) + String(size_data) + String (wifiname.c_str()) + String(wifipsw.c_str());
} else {
smart_data = String(wifiname_len) + String(size_data) + String (wifiname.c_str()) + String(wifipsw.c_str());
size_data = String(smart_data).length();
smart_data = String(wifiname_len) + String(size_data) + String (wifiname.c_str()) + String(wifipsw.c_str());
}
Serial.println(size_data);
Serial.println(smart_data); //打印出保存在eeprom数据
Serial.println(String(smart_data).length());//打印出保存在eeprom中的数据长度
for (int addr = 300; addr < size_data + 301; addr++)
{
//int data = addr%256; //在该代码中等同于int data = addr;因为下面write方法是以字节为存储单位的.
//String(smart_data).charAt(addr);
EEPROM.write(addr, toascii(String(smart_data).charAt(addr-300))); //写数据
delay(50);
}
EEPROM.commit(); //保存更改的数据
Serial.println("End write");
break;
}
EEPROM.end();
}
void read_eeprom() //读取函数
{
wifiname = "";
wifipsw = "";
int a = (int(EEPROM.read(300)) - int('0')) * 10 + (int(EEPROM.read(301)) - int('0')); //读数据，地址0和地址1分别保存wifi名称的长度的十位和个位
int b = (int(EEPROM.read(302)) - int('0')) * 10 + (int(EEPROM.read(303)) - int('0')) ; //读数据，地址2和地址3分别保存wifi密码的长度的十位和个位
Serial.println();
Serial.println(a);//打印出wifi名的长度，看是否正确
Serial.println(b);//打印出整个保存在eeprom中字符串的长度
for (int addr = 304; addr < b + 301; addr++)//地址304开始则是wifi的名称，然后依次是wifi密码
{
int data = EEPROM.read(addr); //读数据
if (addr < a + 304)
{
wifiname = wifiname + char(data);
}
else
{
wifipsw = wifipsw + char(data);
}
delay(2);
}
Serial.print("SSID:");
Serial.println(wifiname);
Serial.print("PASSWORD:");
Serial.println(wifipsw);
}
String wifi_flag = "0"; //配网标志
const char *AP_NAME = "智能灯控配网"; //wifi名字
String responseHTML = " <html><head><title>正在跳转</title></head><body><script language='javascript'>document.location = '/'</script></body></html>";
const byte DNS_PORT = 53; //DNS端口号
IPAddress apIP(6, 6, 6, 6); //esp8266-AP-IP地址
DNSServer dnsServer; //创建dnsServer实例
ESP8266WebServer webServer(80); //创建WebServer
void wwwroot()
{
if (wifi_flag == "1")
{
File file = SPIFFS.open("/index.html", "r");
webServer.streamFile(file, "text/html");
file.close();
}
else if (wifi_flag == "0")
{
Serial.println("网页加载完成");
File file = SPIFFS.open("/config.html", "r");
webServer.streamFile(file, "text/html");
file.close();
}
}
String wifi_type(int typecode)
{
if (typecode == ENC_TYPE_NONE)
return "Open";
if (typecode == ENC_TYPE_WEP)
return "WEP ";
if (typecode == ENC_TYPE_TKIP)
return "WPA ";
if (typecode == ENC_TYPE_CCMP)
return "WPA2";
if (typecode == ENC_TYPE_AUTO)
return "WPA*";
}
void wifiScan() //扫描周围的wifi信息
{
String req_json = "";
Serial.println("Scan WiFi");
int n = WiFi.scanNetworks();
if (n > 0)
{
int m = 0;
req_json = "{\"req\":[";
for (int i = 0; i < n; i++)
{
if ((int)WiFi.RSSI(i) >= Signal_filtering)
{
m++;
String a = "{\"ssid\":\"" + (String)WiFi.SSID(i) + "\"," + "\"encryptionType\":\"" + wifi_type(WiFi.encryptionType(i)) + "\"," + "\"rssi\":" + (int)WiFi.RSSI(i) + "},";
if (a.length() > 15)
req_json += a;
}
}
req_json.remove(req_json.length() - 1);
req_json += "]}";
webServer.send(200, "text/json;charset=UTF-8", req_json);
Serial.print("Found ");
Serial.print(m);
Serial.print(" WiFi! >");
Serial.print(Signal_filtering);
Serial.println("dB");
}
}
void wifiConfig()
{
Serial.println("进入wificonfig方法");
if (webServer.hasArg("ssid") && webServer.hasArg("password") && wifi_flag == "0")
{
int ssid_len = webServer.arg("ssid").length();
int password_len = webServer.arg("password").length();
if ((ssid_len > 0) && (ssid_len < 33) && (password_len > 7) && (password_len < 65))
{
String ssid_str = webServer.arg("ssid");
String password_str = webServer.arg("password");
const char *ssid = ssid_str.c_str();
const char *password = password_str.c_str();
Serial.print("SSID: ");
Serial.println(ssid);
Serial.print("Password: ");
Serial.println(password);
Serial.print("Connenting");
WiFi.begin(ssid, password);
delay(5000);
//连接wifi
unsigned long millis_time = millis();
while ((WiFi.status() != WL_CONNECTED) && (millis() - millis_time < 8000))
{
delay(500);
Serial.print(".");
}
if (WiFi.status() == WL_CONNECTED)
{
digitalWrite(LED, HIGH);
Serial.println("");
Serial.println("Connected successfully!");
Serial.print("IP Address: ");
Serial.println(WiFi.localIP());
Serial.print("http://");
Serial.println(Hostname);
webServer.send(200, "text/plain", "1");
delay(300);
wifi_flag = "1";
wifiname=ssid;
wifipsw=password;
Serial.println(wifiname);
Serial.println(wifipsw);
write_eeprom(); //调用保存函数
read_eeprom();
WiFi.softAPdisconnect();
delay(1000);
ESP.restart();
}
else
{
Serial.println("Connenting failed!");
webServer.send(200, "text/plain", "0");
}
}
else
{
Serial.println("Password format error");
webServer.send(200, "text/plain", "0");
}
}
else
{
Serial.println("Request parameter error");
webServer.send(200, "text/plain", "0");
}
}
void initSoftAP(void)
{ //初始化AP模式
WiFi.mode(WIFI_AP);
WiFi.softAPConfig(apIP, apIP, IPAddress(255, 255, 255, 0));
if (WiFi.softAP(AP_NAME))
{
Serial.println("ESP8266 SoftAP is right");
}
}
void initWebServer(void)
{ //初始化WebServer
Serial.println("启动http服务");
webServer.on("/", wwwroot);
if (SPIFFS.exists("/config.html") == 1)
{
Serial.println("页面已加载完成");
}
webServer.on("/wificonfig", wifiConfig);
webServer.on("/wifiscan", wifiScan);
if (wifi_flag == "0")
webServer.onNotFound([]()
{ webServer.send(200, "text/html", responseHTML); });
webServer.begin(); //启动WebServer
}
void initDNS(void)
{ //初始化DNS服务器
if (dnsServer.start(DNS_PORT, "*", apIP))
{ //判断将所有地址映射到esp8266的ip上是否成功
Serial.println("start dnsserver success.");
}
else
Serial.println("start dnsserver failed.");
}
void connectNewWifi(void)
{
WiFi.hostname(Hostname); //设置ESP8266设备名
WiFi.mode(WIFI_STA); //切换为STA模式
WiFi.setAutoConnect(true); //设置自动连接
read_eeprom(); //读取wifi信息
delay(100);
Serial.print(wifiname);
Serial.print(wifipsw);
WiFi.begin(wifiname, wifipsw); //连接上一次连接成功的wifi
Serial.println("");
Serial.print("start Connect to wifi");
int count = 0;
while (WiFi.status() != WL_CONNECTED)
{
digitalWrite(LED, LOW);
delay(1000);
digitalWrite(LED, HIGH);
delay(1000);
digitalWrite(LED, LOW);
count++;
if (count > 15)
{ //如果8秒内没有连上，就开启Web配网 可适当调整这个时间
initSoftAP();
initWebServer();
initDNS();
break; //跳出 防止无限初始化
}
Serial.print(".");
}
Serial.println("");
if (WiFi.status() == WL_CONNECTED)
{ //如果连接上 就输出IP信息 防止未连接上break后会误输出
Serial.println("WIFI Connected!");
wifi_flag = "1"; //标志为1
Serial.print("IP address: ");
Serial.println(WiFi.localIP()); //打印esp8266的IP地址
webServer.stop();
digitalWrite(LED, HIGH);
delay(1000);
}
}
void wifi_load()
{
Serial.begin(115200);
SPIFFS.begin();
if (SPIFFS.exists("/config.html") == 1)
{
Serial.println("存在");
Serial.println("/config.html");
}
pinMode(LED, OUTPUT);
digitalWrite(LED, LOW);
connectNewWifi();
}
void wifi_pant()
{
if (wifi_flag == "0")
{
digitalWrite(LED, LOW);
delay(150);
digitalWrite(LED, HIGH);
delay(150);
digitalWrite(LED, LOW);
webServer.handleClient();
dnsServer.processNextRequest();
}
}
#endif