146 wiersze
4.3 KiB
C++
146 wiersze
4.3 KiB
C++
/*
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* Copyright (c) 2015, Majenko Technologies
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice, this
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* list of conditions and the following disclaimer in the documentation and/or
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* other materials provided with the distribution.
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*
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* * Neither the name of Majenko Technologies nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <WiFiClient.h>
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#include <ESP32WebServer.h>
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#include <WiFi.h>
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#include <ESPmDNS.h>
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const char* ssid = "mieu mieu 01";
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const char* password = "09471919479";
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ESP32WebServer server ( 80 );
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const int led = 13;
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void handleRoot() {
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digitalWrite ( led, 1 );
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char temp[400];
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int sec = millis() / 1000;
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int min = sec / 60;
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int hr = min / 60;
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snprintf ( temp, 400,
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"<html>\
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<head>\
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<meta http-equiv='refresh' content='5'/>\
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<title>ESP32 Demo</title>\
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<style>\
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body { background-color: #cccccc; font-family: Arial, Helvetica, Sans-Serif; Color: #000088; }\
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</style>\
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</head>\
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<body>\
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<h1>Hello from ESP32!</h1>\
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<p>Uptime: %02d:%02d:%02d</p>\
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<img src=\"/test.svg\" />\
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</body>\
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</html>",
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hr, min % 60, sec % 60
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);
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server.send ( 200, "text/html", temp );
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digitalWrite ( led, 0 );
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}
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void handleNotFound() {
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digitalWrite ( led, 1 );
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String message = "File Not Found\n\n";
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message += "URI: ";
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message += server.uri();
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message += "\nMethod: ";
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message += ( server.method() == HTTP_GET ) ? "GET" : "POST";
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message += "\nArguments: ";
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message += server.args();
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message += "\n";
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for ( uint8_t i = 0; i < server.args(); i++ ) {
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message += " " + server.argName ( i ) + ": " + server.arg ( i ) + "\n";
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}
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server.send ( 404, "text/plain", message );
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digitalWrite ( led, 0 );
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}
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void setup ( void ) {
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pinMode ( led, OUTPUT );
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digitalWrite ( led, 0 );
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Serial.begin ( 115200 );
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WiFi.begin ( ssid, password );
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Serial.println ( "" );
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// Wait for connection
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while ( WiFi.status() != WL_CONNECTED ) {
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delay ( 500 );
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Serial.print ( "." );
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}
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Serial.println ( "" );
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Serial.print ( "Connected to " );
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Serial.println ( ssid );
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Serial.print ( "IP address: " );
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Serial.println ( WiFi.localIP() );
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if ( MDNS.begin ( "esp32" ) ) {
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Serial.println ( "MDNS responder started" );
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}
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server.on ( "/", handleRoot );
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server.on ( "/test.svg", drawGraph );
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server.on ( "/inline", []() {
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server.send ( 200, "text/plain", "this works as well" );
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} );
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server.onNotFound ( handleNotFound );
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server.begin();
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Serial.println ( "HTTP server started" );
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}
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void loop ( void ) {
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server.handleClient();
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}
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void drawGraph() {
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String out = "";
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char temp[100];
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out += "<svg xmlns=\"http://www.w3.org/2000/svg\" version=\"1.1\" width=\"400\" height=\"150\">\n";
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out += "<rect width=\"400\" height=\"150\" fill=\"rgb(250, 230, 210)\" stroke-width=\"1\" stroke=\"rgb(0, 0, 0)\" />\n";
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out += "<g stroke=\"black\">\n";
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int y = rand() % 130;
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for (int x = 10; x < 390; x+= 10) {
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int y2 = rand() % 130;
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sprintf(temp, "<line x1=\"%d\" y1=\"%d\" x2=\"%d\" y2=\"%d\" stroke-width=\"1\" />\n", x, 140 - y, x + 10, 140 - y2);
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out += temp;
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y = y2;
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}
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out += "</g>\n</svg>\n";
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server.send ( 200, "image/svg+xml", out);
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}
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