To test the option of using a webserver that is already running, I modify one of the webserver examples of Arduino IDE.
First of all, it is very important to pass to the KNX Library, the already running webserver, as a pointer, so:
If in your program, the server is defined like:
ESP8266WebServer server ( 80 );
you have to use:
knx.start(&server);
If in your program, the server is defined like:
ESP8266WebServer *server;
server = new ESP8266WebServer ( 80 );
you have to use:
knx.start(server);
And also to modify the esp-knx-ip.h to have #define ROOT_PREFIX "/knx"
Following is a working example of that.
@envy, can be added the ROOT_PREFIXdirectly to knx.start(&server)?
To be something like knx.start(&server, "/knx");
Will be very handy that, and also there is no need of modifying the library to use this feature.
What do you think?
Example:
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#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>
#include <esp-knx-ip.h> // KNX Library
#define KNX_ROOT_PAGE "/knx" // KNX Root page. On web browser put <ip>/knx, where <ip> is the IP of the device. You can see the IP from the serial console.
const char *ssid = "SSID";
const char *password = "PASS";
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><center>\
<h1>Hello from ESP8266!</h1>\
<p>Uptime: %02d:%02d:%02d</p>\
<img src=\"/test.svg\" />\
<br>\
<p><a href='" KNX_ROOT_PAGE "'>KNX</a></p></center>\
</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.mode ( WIFI_STA );
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" );
// Set physical address (1.1.1)
knx.physical_address_set(knx.PA_to_address(1, 1, 1));
knx.start(&server);
//knx.start(&server, KNX_ROOT_PAGE);
}
void loop ( void ) {
server.handleClient();
knx.loop();
}
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);
}
Hi,
To test the option of using a webserver that is already running, I modify one of the webserver examples of Arduino IDE.
First of all, it is very important to pass to the KNX Library, the already running webserver, as a pointer, so:
ESP8266WebServer server ( 80 );
you have to use:
knx.start(&server);
you have to use:
knx.start(server);
And also to modify the esp-knx-ip.h to have
#define ROOT_PREFIX "/knx"
Following is a working example of that.
@envy, can be added the
ROOT_PREFIX
directly toknx.start(&server)
? To be something likeknx.start(&server, "/knx");
Will be very handy that, and also there is no need of modifying the library to use this feature.
What do you think?
Example: