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/* Web_Image.pde - example sketch for Webduino library */
/* For webduino version 1.2 */
/* DISCLAIMER -- the Webduino server can only handle one web connection
* at a time. Because of this, loading the root page on this sketch may
* not correctly show the LED icon if the browser starts requesting that
* picture before the page has finished loading.
*
* This problem should be reduced greatly once the Ethernet library
* has been modified to do proper packet buffering. With the library
* in Arduino 15, each character is sent in its own TCP/IP packet.
* This is very inefficient and means that it takes much longer to
* send a web page than it should. When this bug is fixed, the web
* server will have sent its last data and closed the connection by
* the time the client reads the HTML, so it's ready to handle the
* image request.
*/
#include "SPI.h"
#include "Ethernet.h"
#include "WebServer.h"
// CHANGE THIS TO YOUR OWN UNIQUE VALUE
static uint8_t mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
static uint8_t ip[] = { 192, 168, 1, 210 };
WebServer webserver("", 80);
/* The default page just returns HTML to show the image */
void defaultCmd(WebServer &server, WebServer::ConnectionType type, char *url_tail, bool tail_complete)
{
if (type == WebServer::POST)
{
// ignore POST data
server.httpFail();
return;
}
/* for a GET or HEAD, send the standard "it's all OK headers" */
server.httpSuccess();
/* we don't output the body for a HEAD request */
if (type == WebServer::GET)
{
/* store the HTML in program memory using the P macro */
P(message) =
"<html><head><title>Webduino Image Example</title>"
"<body>"
"<h2>LED Image</h2>"
"<img src='led.png' width=256 height=256>"
"</body></html>";
server.printP(message);
}
}
void imageCmd(WebServer &server, WebServer::ConnectionType type, char *url_tail, bool tail_complete)
{
/* this data was taken from a PNG file that was converted to a C data structure
* by running it through the directfb-csource application. */
P(ledData) = {
0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a, 0x00, 0x00, 0x00, 0x0d, 0x49, 0x48, 0x44, 0x52,
0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x10, 0x08, 0x02, 0x00, 0x00, 0x00, 0x90, 0x91, 0x68,
0x36, 0x00, 0x00, 0x00, 0x01, 0x73, 0x52, 0x47, 0x42, 0x00, 0xae, 0xce, 0x1c, 0xe9, 0x00, 0x00,
0x00, 0x04, 0x67, 0x41, 0x4d, 0x41, 0x00, 0x00, 0xb1, 0x8f, 0x0b, 0xfc, 0x61, 0x05, 0x00, 0x00,
0x00, 0x20, 0x63, 0x48, 0x52, 0x4d, 0x00, 0x00, 0x7a, 0x26, 0x00, 0x00, 0x80, 0x84, 0x00, 0x00,
0xfa, 0x00, 0x00, 0x00, 0x80, 0xe8, 0x00, 0x00, 0x75, 0x30, 0x00, 0x00, 0xea, 0x60, 0x00, 0x00,
0x3a, 0x98, 0x00, 0x00, 0x17, 0x70, 0x9c, 0xba, 0x51, 0x3c, 0x00, 0x00, 0x00, 0x18, 0x74, 0x45,
0x58, 0x74, 0x53, 0x6f, 0x66, 0x74, 0x77, 0x61, 0x72, 0x65, 0x00, 0x50, 0x61, 0x69, 0x6e, 0x74,
0x2e, 0x4e, 0x45, 0x54, 0x20, 0x76, 0x33, 0x2e, 0x33, 0x36, 0xa9, 0xe7, 0xe2, 0x25, 0x00, 0x00,
0x00, 0x57, 0x49, 0x44, 0x41, 0x54, 0x38, 0x4f, 0x95, 0x52, 0x5b, 0x0a, 0x00, 0x30, 0x08, 0x6a,
0xf7, 0x3f, 0xf4, 0x1e, 0x14, 0x4d, 0x6a, 0x30, 0x8d, 0x7d, 0x0d, 0x45, 0x2d, 0x87, 0xd9, 0x34,
0x71, 0x36, 0x41, 0x7a, 0x81, 0x76, 0x95, 0xc2, 0xec, 0x3f, 0xc7, 0x8e, 0x83, 0x72, 0x90, 0x43,
0x11, 0x10, 0xc4, 0x12, 0x50, 0xb6, 0xc7, 0xab, 0x96, 0xd0, 0xdb, 0x5b, 0x41, 0x5c, 0x6a, 0x0b,
0xfd, 0x57, 0x28, 0x5b, 0xc2, 0xfd, 0xb2, 0xa1, 0x33, 0x28, 0x45, 0xd0, 0xee, 0x20, 0x5c, 0x9a,
0xaf, 0x93, 0xd6, 0xbc, 0xdb, 0x25, 0x56, 0x61, 0x01, 0x17, 0x12, 0xae, 0x53, 0x3e, 0x66, 0x32,
0xba, 0x00, 0x00, 0x00, 0x00, 0x49, 0x45, 0x4e, 0x44, 0xae, 0x42, 0x60, 0x82
};
if (type == WebServer::POST)
{
// ignore POST data
server.httpFail();
return;
}
/* for a GET or HEAD, send the standard "it's all OK headers" but identify our data as a PNG file */
server.httpSuccess("image/png");
/* we don't output the body for a HEAD request */
if (type == WebServer::GET)
{
server.writeP(ledData, sizeof(ledData));
}
}
void setup()
{
// setup the Ehternet library to talk to the Wiznet board
Ethernet.begin(mac, ip);
/* register our default command (activated with the request of
* http://x.x.x.x/ */
webserver.setDefaultCommand(&defaultCmd);
/* register our image output command */
webserver.addCommand("led.png", &imageCmd);
/* start the server to wait for connections */
webserver.begin();
}
void loop()
{
// process incoming connections one at a time forever
webserver.processConnection();
}
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