summaryrefslogtreecommitdiff
path: root/Webduino/examples/Web_AjaxBuzzer/Web_AjaxBuzzer.ino
diff options
context:
space:
mode:
Diffstat (limited to 'Webduino/examples/Web_AjaxBuzzer/Web_AjaxBuzzer.ino')
-rw-r--r--Webduino/examples/Web_AjaxBuzzer/Web_AjaxBuzzer.ino126
1 files changed, 126 insertions, 0 deletions
diff --git a/Webduino/examples/Web_AjaxBuzzer/Web_AjaxBuzzer.ino b/Webduino/examples/Web_AjaxBuzzer/Web_AjaxBuzzer.ino
new file mode 100644
index 0000000..e546030
--- /dev/null
+++ b/Webduino/examples/Web_AjaxBuzzer/Web_AjaxBuzzer.ino
@@ -0,0 +1,126 @@
+/* Web_Buzzer.pde - example sketch for Webduino library */
+
+#include "SPI.h"
+#include "Ethernet.h"
+#include "WebServer.h"
+
+// CHANGE THIS TO YOUR OWN UNIQUE VALUE
+static uint8_t mac[6] = { 0x02, 0xAA, 0xBB, 0xCC, 0x00, 0x22 };
+
+// CHANGE THIS TO MATCH YOUR HOST NETWORK
+static uint8_t ip[4] = { 192, 168, 1, 210 }; // area 51!
+
+/* all URLs on this server will start with /buzz because of how we
+ * define the PREFIX value. We also will listen on port 80, the
+ * standard HTTP service port */
+#define PREFIX "/buzz"
+WebServer webserver(PREFIX, 80);
+
+/* the piezo speaker on the Danger Shield is on PWM output pin #3 */
+#define BUZZER_PIN 3
+
+/* this is the number of microseconds to wait after turning the
+ * speaker on before turning it off. */
+int buzzDelay = 0;
+
+/* toggle is used to only turn on the speaker every other loop
+iteration. */
+char toggle = 0;
+
+/* This command is set as the default command for the server. It
+ * handles both GET and POST requests. For a GET, it returns a simple
+ * page with some buttons. For a POST, it saves the value posted to
+ * the buzzDelay variable, affecting the output of the speaker */
+void buzzCmd(WebServer &server, WebServer::ConnectionType type, char *, bool)
+{
+ if (type == WebServer::POST)
+ {
+ bool repeat;
+ char name[16], value[16];
+ do
+ {
+ /* readPOSTparam returns false when there are no more parameters
+ * to read from the input. We pass in buffers for it to store
+ * the name and value strings along with the length of those
+ * buffers. */
+ repeat = server.readPOSTparam(name, 16, value, 16);
+
+ /* this is a standard string comparison function. It returns 0
+ * when there's an exact match. We're looking for a parameter
+ * named "buzz" here. */
+ if (strcmp(name, "buzz") == 0)
+ {
+ /* use the STRing TO Unsigned Long function to turn the string
+ * version of the delay number into our integer buzzDelay
+ * variable */
+ buzzDelay = strtoul(value, NULL, 10);
+ }
+ } while (repeat);
+
+ // after procesing the POST data, tell the web browser to reload
+ // the page using a GET method.
+ server.httpSeeOther(PREFIX);
+ 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) =
+"<!DOCTYPE html><html><head>"
+ "<title>Webduino AJAX Buzzer Example</title>"
+ "<link href='http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.16/themes/base/jquery-ui.css' rel=stylesheet />"
+ //"<meta http-equiv='Content-Script-Type' content='text/javascript'>"
+ "<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js'></script>"
+ "<script src='http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.16/jquery-ui.min.js'></script>"
+ "<style> #slider { margin: 10px; } </style>"
+ "<script>"
+ "function changeBuzz(event, ui) { $('#indicator').text(ui.value); $.post('/buzz', { buzz: ui.value } ); }"
+ "$(document).ready(function(){ $('#slider').slider({min: 0, max:8000, change:changeBuzz}); });"
+ "</script>"
+"</head>"
+"<body style='font-size:62.5%;'>"
+ "<h1>Test the Buzzer!</h1>"
+ "<div id=slider></div>"
+ "<p id=indicator>0</p>"
+"</body>"
+"</html>";
+
+ server.printP(message);
+ }
+}
+
+void setup()
+{
+ // set the PWM output for the buzzer to out
+ pinMode(BUZZER_PIN, OUTPUT);
+
+ // 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/buzz */
+ webserver.setDefaultCommand(&buzzCmd);
+
+ /* start the server to wait for connections */
+ webserver.begin();
+}
+
+void loop()
+{
+ // process incoming connections one at a time forever
+ webserver.processConnection();
+
+ /* every other time through the loop, turn on and off the speaker if
+ * our delay isn't set to 0. */
+ if ((++toggle & 1) && (buzzDelay > 0))
+ {
+ digitalWrite(BUZZER_PIN, HIGH);
+ delayMicroseconds(buzzDelay);
+ digitalWrite(BUZZER_PIN, LOW);
+ }
+}