Question

Hello Guys我正在使用来自nodejs的socket.io和serialport。现在我想从安装了服务器的覆盆子pi发出arduino上的命令。它们通过串口连接。当发出串行事件时，arduino只是重复发出的消息，并没有做任何事情，也许你们可以帮助我找到错误。

这是我的服务器代码：

var http = require('http');

var fs = require('fs');
Serialport = require('serialport');
port = '/dev/tty/ACM0';
// Loading the file index.html displayed to the client

 var server = http.createServer(function(req, res) {

fs.readFile('./index.html', 'utf-8', function(error, content) {

    res.writeHead(200, {"Content-Type": "text/html"});

    res.end(content);

});

});

serial = new Serialport(port, {baudrate: 115200});



port.on('open', function() {
port.write('main screen turn on', function(err) {
if (err) {
  return console.log('Error on write: ', err.message);
}
console.log('message written');
});
});

// open errors will be emitted as an error event 
port.on('error', function(err) {
 console.log('Error: ', err.message);
 })


//Funktion um daten vom Arduino zu empfangen

  serial.on('data', function(chunk){
  readData  =chunk.toString();
  if(readData.indexOf('\n')){
  io.sockets.emit('message',"Arduino sends: "+ readData);
  } });

 // socket.io initialisieren

 var io = require('socket.io').listen(server);


 io.sockets.on('connection', function (socket) {

// WillkommensgruÃŸ
console.log('Client verbunden');
socket.emit('message', 'Willkommen');

// Falls multiuser irgendwann realisiert sein sollte
// wird eine nachricht ausgegeben das ein neuer user beigetreten ist

socket.broadcast.emit('message', 'neuer Client');



// Wenn das message event ausgelÃ¶st wird wird es in der Konsole geloggt

socket.on('message', function (message){
  console.log(message);
    });
socket.on('move', function(message){
    // move
  var message2 = new Buffer(message);
   console.log(message2.toString());
   return serial.write(message2);
     });
socket.on('start', function(message){
  //motor 1
  var message2 = new Buffer("motor 1");
  console.log(message2.toString());
serial.write(message 2, function(err) {
    if (err) {
  return console.log('Error on write: ', err.message);
}
console.log('message written');
});

  });
  socket.on('stop', function(message){
      //stop
  var message2 = new Buffer("stop");
  console.log(message2.toString());
  return serial.write(message2);
            });
  socket.on('poke', function(message){
                //stop
  var message2 = new Buffer("ping");
  console.log(message2.toString());
  return serial.write(message2);
                      });
socket.on('sensoron', function(message){
                                    //stop
var message2 = new Buffer("sensors 1");
console.log(message2.toString());
return serial.write(message2);
                      });
socket.on('sensoroff', function(message){
                                                        //stop
var message2 = new Buffer("sensors 0");
console.log(message2.toString());
return serial.write(message2);
                      });


});



server.listen(8080);

我在arduino上初始化了这样的命令：

cmdAdd("ping", cmdPing); 
cmdAdd("move", cmdMove);

无法通过节点js发出串行命令

0 个答案: