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example.html
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example.html
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<!DOCTYPE html>
<html lang='en'>
<head>
<meta charset='utf-8'>
<meta http-equiv='X-UA-Compatible' content='IE=edge'>
<meta name='viewport' content='width=device-width, initial-scale=1'>
<title></title>
<!-- Bootstrap -->
<link rel='stylesheet' href='https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css'>
<link rel='stylesheet' href='https://maxcdn.bootstrapcdn.com/font-awesome/4.4.0/css/font-awesome.min.css'>
<!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
<!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
<!--[if lt IE 9]>
<script src='https://oss.maxcdn.com/libs/html5shiv/3.7.2/html5shiv.js'></script>
<script src='https://oss.maxcdn.com/libs/respond.js/1.4.2/respond.min.js'></script>
<![endif]-->
<script src='serial_port.js'></script>
<script>
isExtensionInstalled(
function(installed){
if(!installed){
alert("Serial Port Interface extension is missing. Please install");
}
}
);
var serialPort = new SerialPort;
serialPort.setOnDataReceivedCallback(onNewData);
realodDevices();
function realodDevices(){
getDevicesList(
function(response){
$('#devices').empty();
if(response.result === "ok"){
for(var i = 0; i < response.ports.length; i++){
$('#devices').append('<option value="' + response.ports[i].path + '">' + response.ports[i].displayName + '(' + response.ports[i].path + ')' + '</option>');
}
}
else{
alert(response.error);
}
}
);
}
function openSelectedPort(){
serialPort.openPort(
{
portName: $('#devices').val(),
bitrate: 9600,
dataBits: "eight",
parityBit: "no",
stopBits: "one"
},
function(response){
console.log(response);
if(response.result === "ok"){
//Do something
}
else{
alert(response.error);
}
}
);
}
function closeCurrentPort(){
serialPort.closePort(
function(response){
console.log(response);
if(response.result === "ok"){
//Do something
}
else{
alert(response.error);
}
}
);
}
function onNewData(data){
var str = "";
var dv = new DataView(data);
for(var i = 0; i < dv.byteLength; i++){
str = str.concat(String.fromCharCode(dv.getUint8(i, true)));
}
$('#output').append(str);
}
function sendData(){
var input = stringToArrayBuffer($('#input').val());
serialPort.write(input,
function(response){
console.log(response);
}
);
}
function stringToArrayBuffer(string){
var buffer = new ArrayBuffer(string.length);
var dv = new DataView(buffer);
for(var i = 0; i < string.length; i++){
dv.setUint8(i, string.charCodeAt(i));
}
return dv.buffer;
}
window.onbeforeunload = function(){
if(serialPort.isOpen()){
serialPort.closePort(
function(response){
console.log(response);
if(response.result === "ok"){
return null;
}
else{
alert(response.error);
return false;
}
}
);
}
return null;
}
</script>
</head>
<body>
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src='https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js'></script>
<!-- Include all compiled plugins (below), or include individual files as needed -->
<script src='https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js'></script>
<select id='devices'></select>
<button onclick='realodDevices()'>Reload</button>
<button onclick='openSelectedPort()'>Open</button>
<button onclick='closeCurrentPort()'>Close</button>
<br>
<textarea id="output" rows="10" cols="50"></textarea>
<br>
<input type="text" id="input">
<button onclick='sendData()'>Send</button>
</body>
</html>