not working on OSX

[santiago]

Hi, running test_read.js on OSX 10.6, using an Arduino, crashes/freezes the machine, which makes me to reboot.

[voodootikigod]

Did you update for your serial port path ALSO is your arduino configured to
transmit? More are not by default. It works on OS X as thats what I am
developing on.

On Mon, Apr 18, 2011 at 11:00 PM, santiago <
reply@reply.github.com>wrote:

Hi, running test_read.js on OSX 10.6, using an Arduino, crashes/freezes the
machine, which makes me to reboot.

Reply to this email directly or view it on GitHub:
#11

Chris Williams
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[santiago]

it actually shows me the first two bytes of the Arduino's stream and then the machine freezes. Using the same code in the same macbook but running ubuntu instead works as expected.

[voodootikigod]

How did you install node.js on the mac? Homebrew?

On Mon, Apr 18, 2011 at 11:22 PM, santiago <
reply@reply.github.com>wrote:

it actually shows me the first two bytes of the Arduino's stream and then
the machine freezes. Using the same code in the same macbook but running
ubuntu instead works as expected.

Reply to this email directly or view it on GitHub:
#11 (comment)

Chris Williams
Twitter: http://twitter.com/voodootikigod

The things I make that you should check out:
OurParents: http://ourparents.com
PromoteJS: http://promotejs.com
JSConf US: http://jsconf.us
Minute With: http://minutewith.com
JSConf Live: http://jsconflive.com

[santiago]

from sources. running 0.4.4 on OSX and 0.4.6 on ubuntu
on both installed serialport via npm

[voodootikigod]

try upgrading your osx to 0.4.6

It does work on OSX. I have heard of various oddities though. Also check
your FTDI driver and ensure that it is the latest

On Mon, Apr 18, 2011 at 11:25 PM, santiago <
reply@reply.github.com>wrote:

from sources. running 0.4.4 on OSX and 0.4.6 on ubuntu
on both installed serialport via npm

Reply to this email directly or view it on GitHub:
#11 (comment)

Chris Williams
Twitter: http://twitter.com/voodootikigod

The things I make that you should check out:
OurParents: http://ourparents.com
PromoteJS: http://promotejs.com
JSConf US: http://jsconf.us
Minute With: http://minutewith.com
JSConf Live: http://jsconflive.com

[robotconscience]

I'm having the same issue, both with 0.4.6 and 0.4.7 on OSX (10.6.7).
I have the newest FTDI drivers installed from the Arduino package, and have tried doing both Serial.print(); and Serial.println();. Each only gives me 1-2 readings then just hangs.

[voodootikigod]

Can you do me a favor and switch to using the raw process and send raw
packets back and forth with suffixing "\r" character to the transfer. I
would love to see if it is the printline code versus the SerialPort code
itself.

Thanks,

Chris

On Tue, Apr 26, 2011 at 1:28 PM, robotconscience <
reply@reply.github.com>wrote:

I'm having the same issue, both with 0.4.6 and 0.4.7 on OSX (10.6.7).
I have the newest FTDI drivers installed from the Arduino package, and have
tried doing both Serial.print(); and Serial.println();. Each only gives me
1-2 readings then just hangs.

Reply to this email directly or view it on GitHub:
#11 (comment)

Chris Williams
Twitter: http://twitter.com/voodootikigod

The things I make that you should check out:
OurParents: http://ourparents.com
PromoteJS: http://promotejs.com
JSConf US: http://jsconf.us
Minute With: http://minutewith.com
JSConf Live: http://jsconflive.com

[robotconscience]

Hi,

I'm having the same problem. Here's my arduino code (just sending a dummy
value for now):

void setup(){
Serial.begin(9600);
};

int inByte = 0;

void loop(){
Serial.print(inByte);
Serial.print('\r');
delay(500);
};

and then my js code:

var serialport = require("serialport");
var SerialPort = serialport.SerialPort; // localize object constructor
var sys = require("sys"), repl = require("repl");

var port = "/dev/tty.usbserial-A9005fr8";
//var port = "/dev/tty.usbserial-A6007zeJ"; // RFID reader

var serial_port = new SerialPort(port, {
baudrate: 9600,
parser: serialport.parsers.raw//,
//parser: serialport.parsers.readline("\n")
});

serial_port.on("data", function (data) {
console.log("new data");
sys.puts("here: "+data);
});

repl.start("=>");

On Apr 26, 2011, at 1:33 PM, voodootikigod wrote:

Can you do me a favor and switch to using the raw process and send raw
packets back and forth with suffixing "\r" character to the transfer. I
would love to see if it is the printline code versus the SerialPort code
itself.

Thanks,

Chris

On Tue, Apr 26, 2011 at 1:28 PM, robotconscience <
reply@reply.github.com>wrote:

I'm having the same issue, both with 0.4.6 and 0.4.7 on OSX (10.6.7).
I have the newest FTDI drivers installed from the Arduino package, and have
tried doing both Serial.print(); and Serial.println();. Each only gives me
1-2 readings then just hangs.

Reply to this email directly or view it on GitHub:
#11 (comment)

Chris Williams
Twitter: http://twitter.com/voodootikigod

The things I make that you should check out:
OurParents: http://ourparents.com
PromoteJS: http://promotejs.com
JSConf US: http://jsconf.us
Minute With: http://minutewith.com
JSConf Live: http://jsconflive.com

Reply to this email directly or view it on GitHub:
#11 (comment)

[pixelspark]

Might be related to the flaky FTDI drivers for OS X. I experienced panics when unplugging the FTDI device without properly closing the connection...

[robotconscience]

I've seen that as well... However, the main issue we're having is that it doesn't continuously read for some reason. We get one reading and then it just sits.

[lowjumpingfrog]

I am using a FTDI usb serial adapter on OSX and I saw the problems, mentioned above, using serialport on node.js .4.7 However, using v0.5.0-pre I was able to get a updating feed from the serial port using test_read.js
With that warm fuzzy I attempted to send the serial data to a web browser using web sockets I installed latest Socket.Io module.
My code is something like this ...

var http = require('http')
, url = require('url')
, fs = require('fs')
, io = require('../')
, sys = require(process.binding('natives').util ? 'util' : 'sys')
, SerialPort = require("/node_modules/serialport").SerialPort
, server;

server = http.createServer(function(req, res){
// your normal server code
}),
server.listen(8080);
var io = io.listen(server);

io.on('connection', function(client){
// Read from /dev/tty and send it to the browser.
var serial_port = new SerialPort("/dev/tty.usbserial-FTCYH5DD");

serial_port.on('error', function (exception) {
client.send({announcement: 'Exception: ' + exception});
});

serial_port.on('data', function (data) {
client.send({html: data});
});
});

When trying to run this:
$ sudo node server.js
17 May 13:56:00 - socket.io ready - accepting connections
17 May 13:56:12 - Initializing client with transport "websocket"
Assertion failed: (b[1] == 0), function DecodeWrite, file ../src/node.cc, line 1212.
Abort trap
It seems there is a problem with decoding the data? I am rather new at node.js Any ideas? Is there a different way to send serial data to the browser? My device is a GPS sending out text.

[soundanalogous]

@lowjumpingfrog
unfortunately there is a bug in the latest version of node.js for sockets so that's why you're getting this error: Assertion failed: (b[1] == 0), function DecodeWrite, file ../src/node.cc, line 1212. As you also discovered, serialport does not work in v0.4.7 (but sockets do). So until someone fixes the bug in the latest version, websockets and serialport won't work simultaneously.

[jamesduncombe]

Had the same issue here too on OSX 10.6.7, Node 0.4.7. I was trying to get updates from an Arduino but experienced the same pause after the first result.

I'll have a look at FTDI drivers and maybe rolling node back to 0.4.6.

[jamesduncombe]

Ok, I've just tried this with the Virtual Serial Port software (http://code.google.com/p/macosxvirtualserialport/) and that works fine so it does seem to be something to do with the FTDI drivers & Node. I tried updating those to the latest version (2.2.16) and tried again with the Arduino but still no luck. I'm going to try rolling back Node to check that next.

[jamesduncombe]

Got it working with Node v0.5.0-pre :)

So, just to confirm that's OSX 10.6.7, Node v0.5.0-pre, FTDI USB serial driver v2.2.16