Add Webduino library

Signed-off-by: Mike Beattie <mike@ethernal.org>
author: Mike Beattie <mike@ethernal.org> 2012-03-20 23:25:34 +1300
committer: Mike Beattie <mike@ethernal.org> 2012-03-20 23:25:34 +1300
commit: 25a6bca31c63840261141d764bbd70331a268f19 (patch)
tree: 98d195184d0d033aab6905585a5a23ba26e456f2 /Webduino/examples/Web_Demo/Web_Demo.ino
parent: cb7bd533cb2b505441ca9a35c9897db358a30b47 (diff)
1 files changed, 189 insertions, 0 deletions
diff --git a/Webduino/examples/Web_Demo/Web_Demo.ino b/Webduino/examples/Web_Demo/Web_Demo.ino
new file mode 100644
index 0000000..bb4a016
--- /dev/null
+++ b/Webduino/examples/Web_Demo/Web_Demo.ino
@@ -0,0 +1,189 @@
+/* Web_Demo.pde -- sample code for Webduino server library */
+
+/*
+ * To use this demo,  enter one of the following USLs into your browser.
+ * Replace "host" with the IP address assigned to the Arduino.
+ *
+ * http://host/
+ * http://host/json
+ *
+ * This URL brings up a display of the values READ on digital pins 0-9
+ * and analog pins 0-5.  This is done with a call to defaultCmd.
+ * 
+ * 
+ * http://host/form
+ *
+ * This URL also brings up a display of the values READ on digital pins 0-9
+ * and analog pins 0-5.  But it's done as a form,  by the "formCmd" function,
+ * and the digital pins are shown as radio buttons you can change.
+ * When you click the "Submit" button,  it does a POST that sets the
+ * digital pins,  re-reads them,  and re-displays the form.
+ * 
+ */
+
+#include "SPI.h"
+#include "Ethernet.h"
+#include "WebServer.h"
+
+// no-cost stream operator as described at 
+// http://sundial.org/arduino/?page_id=119
+template<class T>
+inline Print &operator <<(Print &obj, T arg)
+{ obj.print(arg); return obj; }
+
+
+// CHANGE THIS TO YOUR OWN UNIQUE VALUE
+static uint8_t mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
+
+// CHANGE THIS TO MATCH YOUR HOST NETWORK
+static uint8_t ip[] = { 192, 168, 1, 210 };
+
+#define PREFIX ""
+
+WebServer webserver(PREFIX, 80);
+
+// commands are functions that get called by the webserver framework
+// they can read any posted data from client, and they output to server
+
+void jsonCmd(WebServer &server, WebServer::ConnectionType type, char *url_tail, bool tail_complete)
+{
+  if (type == WebServer::POST)
+  {
+    server.httpFail();
+    return;
+  }
+
+  //server.httpSuccess(false, "application/json");
+  server.httpSuccess("application/json");
+  
+  if (type == WebServer::HEAD)
+    return;
+
+  int i;    
+  server << "{ ";
+  for (i = 0; i <= 9; ++i)
+  {
+    // ignore the pins we use to talk to the Ethernet chip
+    int val = digitalRead(i);
+    server << "\"d" << i << "\": " << val << ", ";
+  }
+
+  for (i = 0; i <= 5; ++i)
+  {
+    int val = analogRead(i);
+    server << "\"a" << i << "\": " << val;
+    if (i != 5)
+      server << ", ";
+  }
+  
+  server << " }";
+}
+
+void outputPins(WebServer &server, WebServer::ConnectionType type, bool addControls = false)
+{
+  P(htmlHead) =
+    "<html>"
+    "<head>"
+    "<title>Arduino Web Server</title>"
+    "<style type=\"text/css\">"
+    "BODY { font-family: sans-serif }"
+    "H1 { font-size: 14pt; text-decoration: underline }"
+    "P  { font-size: 10pt; }"
+    "</style>"
+    "</head>"
+    "<body>";
+
+  int i;
+  server.httpSuccess();
+  server.printP(htmlHead);
+
+  if (addControls)
+    server << "<form action='" PREFIX "/form' method='post'>";
+
+  server << "<h1>Digital Pins</h1><p>";
+
+  for (i = 0; i <= 9; ++i)
+  {
+    // ignore the pins we use to talk to the Ethernet chip
+    int val = digitalRead(i);
+    server << "Digital " << i << ": ";
+    if (addControls)
+    {
+      char pinName[4];
+      pinName[0] = 'd';
+      itoa(i, pinName + 1, 10);
+      server.radioButton(pinName, "1", "On", val);
+      server << " ";
+      server.radioButton(pinName, "0", "Off", !val);
+    }
+    else
+      server << (val ? "HIGH" : "LOW");
+
+    server << "<br/>";
+  }
+
+  server << "</p><h1>Analog Pins</h1><p>";
+  for (i = 0; i <= 5; ++i)
+  {
+    int val = analogRead(i);
+    server << "Analog " << i << ": " << val << "<br/>";
+  }
+
+  server << "</p>";
+
+  if (addControls)
+    server << "<input type='submit' value='Submit'/></form>";
+
+  server << "</body></html>";
+}
+
+void formCmd(WebServer &server, WebServer::ConnectionType type, char *url_tail, bool tail_complete)
+{
+  if (type == WebServer::POST)
+  {
+    bool repeat;
+    char name[16], value[16];
+    do
+    {
+      repeat = server.readPOSTparam(name, 16, value, 16);
+      if (name[0] == 'd')
+      {
+        int pin = strtoul(name + 1, NULL, 10);
+        int val = strtoul(value, NULL, 10);
+        digitalWrite(pin, val);
+      }
+    } while (repeat);
+
+    server.httpSeeOther(PREFIX "/form");
+  }
+  else
+    outputPins(server, type, true);
+}
+
+void defaultCmd(WebServer &server, WebServer::ConnectionType type, char *url_tail, bool tail_complete)
+{
+  outputPins(server, type, false);  
+}
+
+void setup()
+{
+  // set pins 0-8 for digital input
+  for (int i = 0; i <= 9; ++i)
+    pinMode(i, INPUT);
+  pinMode(9, OUTPUT);
+
+  Ethernet.begin(mac, ip);
+  webserver.begin();
+
+  webserver.setDefaultCommand(&defaultCmd);
+  webserver.addCommand("json", &jsonCmd);
+  webserver.addCommand("form", &formCmd);
+}
+
+void loop()
+{
+  // process incoming connections one at a time forever
+  webserver.processConnection();
+
+  // if you wanted to do other work based on a connecton, it would go here
+}
author	Mike Beattie <mike@ethernal.org>	2012-03-20 23:25:34 +1300
committer	Mike Beattie <mike@ethernal.org>	2012-03-20 23:25:34 +1300
commit	25a6bca31c63840261141d764bbd70331a268f19 (patch)
tree	98d195184d0d033aab6905585a5a23ba26e456f2 /Webduino/examples/Web_Demo/Web_Demo.ino
parent	cb7bd533cb2b505441ca9a35c9897db358a30b47 (diff)