nicht angemeldet
Hallo,
ich habe eine HTML Datei mit eingebetetem JAVASCRIPT Code auf meinem Webserver liegen 192.168.178.108, welche GET and Post Befehle zu einem Microcontrollerboard 192.168.178.104 versendet.
Die Post-Befehle funktionieren. Allerdings bekomme ich die Werte nur zurück geliefert, wenn sich die HTML Datei auf dem Microcontrollerboard befindet. Ich möchte allerdings auch die Werte auf dem entfernten Webserver erhalten.
Wie muss ich den Code dafür verändern, dass er sich die Werte von einer bestimmten IP (192.168.178.108) holt?
Vielen Dank!
LG
<!DOCTYPE html>
<html>
<head>
<title>Arduino Ajax I/O</title>
<script>
strLED1 = "";
strLED2 = "";
strLED3 = "";
strLED4 = "";
var LED3_state = 0;
var LED4_state = 0;
function GetArduinoIO()
{
nocache = "&nocache=" + Math.random() * 1000000;
var request = new XMLHttpRequest();
request.onreadystatechange = function()
{
if (this.readyState == 4) {
if (this.status == 200) {
if (this.responseXML != null) {
// XML file received - contains analog values, switch values and LED states
var count;
// get analog inputs
var num_an = this.responseXML.getElementsByTagName('analog').length;
for (count = 0; count < num_an; count++) {
document.getElementsByClassName("analog")[count].innerHTML =
this.responseXML.getElementsByTagName('analog')[count].childNodes[0].nodeValue;
}
// get switch inputs
var num_an = this.responseXML.getElementsByTagName('switch').length;
for (count = 0; count < num_an; count++) {
document.getElementsByClassName("switches")[count].innerHTML =
this.responseXML.getElementsByTagName('switch')[count].childNodes[0].nodeValue;
}
// LED 1
if (this.responseXML.getElementsByTagName('LED')[0].childNodes[0].nodeValue === "checked") {
document.LED_form.LED1.checked = true;
}
else {
document.LED_form.LED1.checked = false;
}
// LED 2
if (this.responseXML.getElementsByTagName('LED')[1].childNodes[0].nodeValue === "checked") {
document.LED_form.LED2.checked = true;
}
else {
document.LED_form.LED2.checked = false;
}
// LED 3
if (this.responseXML.getElementsByTagName('LED')[2].childNodes[0].nodeValue === "on") {
document.getElementById("LED3").innerHTML = "LED 3 is ON (D8)";
LED3_state = 1;
}
else {
document.getElementById("LED3").innerHTML = "LED 3 is OFF (D8)";
LED3_state = 0;
}
// LED 4
if (this.responseXML.getElementsByTagName('LED')[3].childNodes[0].nodeValue === "on") {
document.getElementById("LED4").innerHTML = "LED 4 is ON (D9)";
LED4_state = 1;
}
else {
document.getElementById("LED4").innerHTML = "LED 4 is OFF (D9)";
LED4_state = 0;
}
}
}
}
}
// send HTTP GET request with LEDs to switch on/off if any
//const url='192.168.178.104:80/ajax_inputs';
request.open("GET", "http://192.168.178.104", "ajax_inputs" + strLED1 + strLED2 + strLED3 + strLED4 + nocache, true);
request.send(null);
setTimeout('GetArduinoIO()', 1000);
strLED1 = "";
strLED2 = "";
strLED3 = "";
strLED4 = "";
}
// service LEDs when checkbox checked/unchecked
function GetCheck()
{
if (LED_form.LED1.checked) {
strLED1 = "http://192.168.178.104/&LED1=1";
}
else {
strLED1 = "http://192.168.178.104/&LED1=0";
}
if (LED_form.LED2.checked) {
strLED2 = "http://192.168.178.104/&LED2=1";
}
else {
strLED2 = "http://192.168.178.104/&LED2=0";
}
}
function GetButton1()
{
if (LED3_state === 1) {
LED3_state = 0;
strLED3 = "http://192.168.178.104/&LED3=0";
}
else {
LED3_state = 1;
strLED3 = "http://192.168.178.104/&LED3=1";
}
}
function GetButton2()
{
if (LED4_state === 1) {
LED4_state = 0;
strLED4 = "http://192.168.178.104/&LED4=0";
}
else {
LED4_state = 1;
strLED4 = "http://192.168.178.104/&LED4=1";
}
}
</script>
<style>
.IO_box {
float: left;
margin: 0 20px 20px 0;
border: 1px solid blue;
padding: 0 5px 0 5px;
width: 120px;
}
h1 {
font-size: 120%;
color: blue;
margin: 0 0 10px 0;
}
h2 {
font-size: 85%;
color: #5734E6;
margin: 5px 0 5px 0;
}
p, form, button {
font-size: 80%;
color: #252525;
}
.small_text {
font-size: 70%;
color: #737373;
}
</style>
</head>
<body onload="GetArduinoIO()">
<h1>Arduino Ajax I/O</h1>
<div class="IO_box">
<h2>Analog Inputs</h2>
<p class="small_text">A0 used by Ethernet shield</p>
<p class="small_text">A1 used by Ethernet shield</p>
<p>A2: <span class="analog">...</span></p>
<p>A3: <span class="analog">...</span></p>
<p>A4: <span class="analog">...</span></p>
<p>A5: <span class="analog">...</span></p>
</div>
<div class="IO_box">
<h2>Switch Inputs</h2>
<p class="small_text">D0: used by serial RX</p>
<p class="small_text">D1: used by serial TX</p>
<p>Switch 1 (D2): <span class="switches">...</span></p>
<p>Switch 2 (D3): <span class="switches">...</span></p>
<p class="small_text">D4: used by Ethernet shield</p>
<p>Switch 3 (D5): <span class="switches">...</span></p>
</div>
<div class="IO_box">
<h2>LEDs Using Checkboxes</h2>
<form id="check_LEDs" name="LED_form">
<input type="checkbox" name="LED1" value="0" onclick="GetCheck()" />LED 1 (D6)<br /><br />
<input type="checkbox" name="LED2" value="0" onclick="GetCheck()" />LED 2 (D7)<br /><br />
</form>
</div>
<div class="IO_box">
<h2>LEDs Using Buttons</h2>
<button type="button" id="LED3" onclick="GetButton1()">LED 3 is OFF (D8)</button><br /><br />
<button type="button" id="LED4" onclick="GetButton2()">LED 4 is OFF (D9)</button><br /><br />
<p class="small_text">D10 to D13 used by Ethernet shield</p>
</div>
</body>
</html>
Rolf B