VFO周波数は、リモートホストによって１秒間に数回読み出され、ブラウザにプッシュされます。
remote host % node index.js
index.js
var app = require('express')();
var http = require('http').Server(app);
var io = require('socket.io')(http);
var port = process.env.PORT || 3000;
var SerialPort = require('serialport');
var serial = new SerialPort('/dev/ttyUSB0',{
baudrate:19200
});
const bufa = new Buffer('fefe80e017' , 'hex'); // preamble
const bufz = new Buffer('fd' , 'hex'); // postamble
const buf1 = new Buffer('fefe80e0174351fd' , 'hex'); // CQ
const buf2 = new Buffer('fefe80e01751525a3ffd', 'hex'); // QRZ?
const buf3 = new Buffer('fefe80e003fd' , 'hex'); // read freq
http.listen(3000,function(){
console.log('now listening to the port 3000..');
});
app.get('/', function(req, res){
res.sendFile(__dirname + '/index.html');
});
serial.on('open',function(){
console.log('serial port /dev/ttyUSB0 is opened.');
serial.write(buf3);
});
serial.on('data',function(data){
console.log('received data: ', data);
if (data[3] == 0x80 &data[4] == 0x03) {
console.log('received data: ', data[5], data[6], data[7], data[8]);
var f10 = data[5]>>4 & 0x0f;
var f1 = data[5] & 0x0f;
var f1k = data[6]>>4 & 0x0f;
var f100 = data[6] & 0x0f;
var f100k = data[7]>>4 & 0x0f;
var f10k = data[7] & 0x0f;
var f10m = data[8]>>4 & 0x0f;
var f1m = data[8] & 0x0f;
var freq = f10m.toString()+f1m.toString()+","+f100k.toString()+f10k.toString()+f1k.toString()+"."+f100.toString()+f10.toString()+f1+" kHz";
console.log('freq: ' + freq);
io.emit('recvmsg', 'VFO A: ' + freq);
}
});
serial.on('error', function(err) {
console.log('Error: ', err.message);
})
io.on('connection', function(socket){
socket.on('message1', function(){
serial.write(buf1);
});
socket.on('message2', function(){
serial.write(buf2);
});
socket.on('your message', function(msg){
serial.write(bufa);
serial.write(msg);
serial.write(bufz);
io.emit('your message', msg);
});
});
function sendTime() {
serial.write(buf3);
}
setInterval(sendTime, 200);
index.html
<!doctype html>
<html>
<head>
<title>IC-7410 Rig Control</title>
<style>
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font: 13px Helvetica, Arial; }
form { background: #000; padding: 3px; position: fixed; bottom: 0; width: 100%; }
form input { border: 0; padding: 10px; width: 80%; margin-right: .5%; }
form button { width: 15%; background: rgb(130, 224, 255); border: none; padding: 10px; }
#messages { list-style-type: none; margin: 0; padding: 0; }
#messages li { padding: 5px 10px; }
#messages li:nth-child(odd) { background: #eee; }
#messages { margin-bottom: 40px }
#messages { font-size: 2em }
#frequency { position: fixed; top: 10px; left: 200px; font-size: 2em }
</style>
</head>
<body>
<button id="btn1"><font size="5">CQ</font></button>
<button id="btn2"><font size="5">QRZ?</font></button>
<div id="frequency"></div>
<div id="messages"></div>
<form action="">
<input id="m" autocomplete="off" /><button>Send</button>
</form>
<script src="https://cdn.socket.io/socket.io-1.2.0.js"></script>
<script src="https://code.jquery.com/jquery-1.11.1.js"></script>
<script>
var socket = io();
$('#btn1').click(function(){
socket.emit('message1');
});
$('#btn2').click(function(){
socket.emit('message2');
});
socket.on('recvmsg',function(data){
$('h1').text(data);
});
</script>
<script>
$(function () {
var socket = io();
$('form').submit(function(){
socket.emit('your message', $('#m').val());
$('#m').val('');
return false;
});
socket.on('your message', function(msg){
$('#messages').append($('<div>').text(msg));
window.scrollTo(0, document.body.scrollHeight);
});
socket.on('recvmsg', function(msg){
document.getElementById("frequency").innerHTML = msg;
});
});
</script>
</body>
</html>