#include <ESP8266WebServer.h>
#include <ESP8266HTTPUpdateServer.h>
#include<time.h>
#include <Ticker.h>
#include <ESP8266WiFi.h>
#include <WiFiManager.h>
byte board_led = 4; //D1-mini板载灯脚，D4
Ticker slow_ticker; //用于板载灯慢闪烁控制
ESP8266WebServer httpServer(81); //用于web服务器
ESP8266HTTPUpdateServer httpUpdater;//用于代码OTA更新
// 建立WiFiManager对象
WiFiManager wifiManager;
void wifi_conn();
void setup() {
Serial.begin(9600);
pinMode(board_led, OUTPUT); //设置板载灯脚为输出状态
digitalWrite(board_led, LOW); //点亮板载灯（低电平有效），开始连接WiFi //预置WiFi名称和密码，这样模块在家和单位就都可以使用了
wifi_conn();//连接WiFi
//WiFi.printDiag(Serial);
}
void loop() {
// Handle http server.
httpServer.handleClient();
}
void handleRoot() {
String message = "<!DOCTYPE HTML>";
message += "<html><head><meta charset=\"UTF-8\"><title>固件OTA升级</title>";
message += "</head><body><div align=\"center\">";
message += "<br><br><a href=\"/update\">点击这里</a> 进入OTA升级界面";
message += "</div></div></body></html>";
httpServer.send ( 200, "text/html", message );
}
void handleNotFound() {
//digitalWrite(board_led, 1);
String message = "File Not Found\n\n";
message += "URI: ";
message += httpServer.uri();
message += "\nMethod: ";
message += (httpServer.method() == HTTP_GET) ? "GET" : "POST";
message += "\nArguments: ";
message += httpServer.args();
message += "\n";
for (uint8_t i = 0; i < httpServer.args(); i++) {
message += " " + httpServer.argName(i) + ": " + httpServer.arg(i) + "\n";
}
httpServer.send(404, "text/plain", message);
//digitalWrite(board_led, 0);
}
void led_blink(byte pin)
{ //指定pin脚改变其状态
bool state = digitalRead(pin); // 获得pin脚当前状态
digitalWrite(pin, !state); // 设置pin脚为反
}
void wifi_conn()
{
if (wifiManager.autoConnect("CMCC_X11_ESP82"))
{
Serial.println("");
Serial.print("ESP8266 Connected to ");
Serial.println(WiFi.SSID()); // WiFi名称
Serial.print("IP address:\t");
Serial.println(WiFi.localIP()); // IP
}
httpServer.on("/", handleRoot); //调用主页面
httpServer.onNotFound(handleNotFound); //出错调用
// 开启 Web Update server.
httpUpdater.setup(&httpServer);
// 开启 HTTP server
httpServer.begin();
// 检查连接状态
if (WiFi.status() == WL_CONNECTED)
{
//如果WiFi连接成功
slow_ticker.attach(0.8, led_blink, board_led);//WiFi连接正常，板载灯闪烁
}
else
{ //WiFi连接不成功
Serial.println("wifi connect fail!");
digitalWrite(board_led, HIGH); //WiFi连接失败，板载灯灭
}
}
