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烧录时版型和参数选择
测试样例1
说明：
- 程序输入 你要连接的路由器 名+密码。
- 烧录进入wemos d1 mini 板，程序自动连接路由器，并返回自己分配到的地址。
- 手机或电脑连接在同一个路由器下，打开网页，输入刚才返回的地址，网页看到结果。
1 烧录程序
/*
* Copyright (c) 2015, Majenko Technologies
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* * Neither the name of Majenko Technologies nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>
const char *ssid = "dongdong";
const char *password = "dongdong";
ESP8266WebServer server ( 80 );
const int led = 13;
void handleRoot() {
digitalWrite ( led, 1 );
char temp[400];
int sec = millis() / 1000;
int min = sec / 60;
int hr = min / 60;
snprintf ( temp, 400,
"<html> <head> <meta http-equiv=‘refresh‘ content=‘5‘/> <title>ESP8266 Demo</title> <style> body { background-color: #cccccc; font-family: Arial, Helvetica, Sans-Serif; Color: #000088; } </style> </head> <body> <h1>Hello from ESP8266!</h1> <p>Uptime: %02d:%02d:%02d</p> <img src=\\"/test.svg\\" /> </body></html>",
hr, min % 60, sec % 60
);
server.send ( 200, "text/html", temp );
digitalWrite ( led, 0 );
}
void handleNotFound() {
digitalWrite ( led, 1 );
String message = "File Not Found\\n\\n";
message += "URI: ";
message += server.uri();
message += "\\nMethod: ";
message += ( server.method() == HTTP_GET ) ? "GET" : "POST";
message += "\\nArguments: ";
message += server.args();
message += "\\n";
for ( uint8_t i = 0; i < server.args(); i++ ) {
message += " " + server.argName ( i ) + ": " + server.arg ( i ) + "\\n";
}
server.send ( 404, "text/plain", message );
digitalWrite ( led, 0 );
}
void setup ( void ) {
pinMode ( led, OUTPUT );
digitalWrite ( led, 0 );
Serial.begin ( 115200 );
WiFi.begin ( ssid, password );
Serial.println ( "" );
// Wait for connection
while ( WiFi.status() != WL_CONNECTED ) {
delay ( 500 );
Serial.print ( "." );
}
Serial.println ( "" );
Serial.print ( "Connected to " );
Serial.println ( ssid );
Serial.print ( "IP address: " );
Serial.println ( WiFi.localIP() );
if ( MDNS.begin ( "esp8266" ) ) {
Serial.println ( "MDNS responder started" );
}
server.on ( "/", handleRoot );
server.on ( "/test.svg", drawGraph );
server.on ( "/inline", []() {
server.send ( 200, "text/plain", "this works as well" );
} );
server.onNotFound ( handleNotFound );
server.begin();
Serial.println ( "HTTP server started" );
}
void loop ( void ) {
server.handleClient();
}
void drawGraph() {
String out = "";
char temp[100];
out += "<svg xmlns=\\"http://www.w3.org/2000/svg\\" version=\\"1.1\\" width=\\"400\\" height=\\"150\\">\\n";
out += "<rect width=\\"400\\" height=\\"150\\" fill=\\"rgb(250, 230, 210)\\" stroke-width=\\"1\\" stroke=\\"rgb(0, 0, 0)\\" />\\n";
out += "<g stroke=\\"black\\">\\n";
int y = rand() % 130;
for (int x = 10; x < 390; x+= 10) {
int y2 = rand() % 130;
sprintf(temp, "<line x1=\\"%d\\" y1=\\"%d\\" x2=\\"%d\\" y2=\\"%d\\" stroke-width=\\"1\\" />\\n", x, 140 - y, x + 10, 140 - y2);
out += temp;
y = y2;
}
out += "</g>\\n</svg>\\n";
server.send ( 200, "image/svg+xml", out);
}
2 连接路由器
我们只需要用浏览器打开这个IP就可以看到8266输出的内容了。