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AdvancedWebServer.ino
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AdvancedWebServer.ino
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/*
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.
*/
// Example works with either Wired or WiFi Ethernet, define one of these values to 1, other to 0
#define USE_WIFI 1
#define USE_WIRED 0
#if USE_WIFI
#include <WiFi.h>
#elif USE_WIRED
#include <W5500lwIP.h> // Or W5100lwIP.h or ENC28J60lwIP.h
Wiznet5500lwIP eth(1 /* chip select */); // or Wiznet5100lwIP or ENC28J60lwIP
#endif
#include <WiFiClient.h>
#include <WebServer.h>
#include <LEAmDNS.h>
#include <StreamString.h>
#ifndef STASSID
#define STASSID "your-ssid"
#define STAPSK "your-password"
#endif
const char *ssid = STASSID;
const char *password = STAPSK;
WebServer server(80);
const int led = LED_BUILTIN;
void handleRoot() {
static int cnt = 0;
digitalWrite(led, 1);
int sec = millis() / 1000;
int min = sec / 60;
int hr = min / 60;
StreamString temp;
temp.reserve(500); // Preallocate a large chunk to avoid memory fragmentation
temp.printf("<html>\
<head>\
<meta http-equiv='refresh' content='5'/>\
<title>" BOARD_NAME " Demo</title>\
<style>\
body { background-color: #cccccc; font-family: Arial, Helvetica, Sans-Serif; Color: #000088; }\
</style>\
</head>\
<body>\
<h1>Hello from the " BOARD_NAME "!</h1>\
<p>Uptime: %02d:%02d:%02d</p>\
<p>Free Memory: %d</p>\
<p>Page Count: %d</p>\
<img src=\"/test.svg\" />\
</body>\
</html>", hr, min % 60, sec % 60, rp2040.getFreeHeap(), ++cnt);
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 drawGraph() {
String out;
out.reserve(2600);
char temp[70];
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);
}
void setup(void) {
pinMode(led, OUTPUT);
digitalWrite(led, 0);
Serial.begin(115200);
#if USE_WIFI
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());
#elif USE_WIRED
// Set up SPI pinout to match your HW
SPI.setRX(0);
SPI.setCS(1);
SPI.setSCK(2);
SPI.setTX(3);
// Start the Ethernet port
if (!eth.begin()) {
Serial.println("No wired Ethernet hardware detected. Check pinouts, wiring.");
while (1) {
delay(1000);
}
}
// Wait for connection
while (eth.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.print("IP address: ");
Serial.println(eth.localIP());
#endif
if (MDNS.begin("picow")) {
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();
MDNS.update();
}