Node-serialport: Port doesn't seem to open?

[jdshin123]

Summary of Problem

(Please answer all 3)

• What are you trying to do?
  
  
  
  • write and read to/from a comport.
  
  
• What happens?
  
  
  
  • Does not seem to be able to open a port. When i write to comport, the message stays in the buffer but
    
    never gets sent. When i connect to comport via terminal im able to see the message that has not been sent. I also tried closing the port i.e port.close() but i get an error saying port is not open.
  
  
• What should have happened?
• The message should have been able to go through and receive message

Code to Reproduce the Issue

const serialPort = require('serialport');
const readLine = require('@serialPort/parser-readLine');

serialPort.list(function(err,ports){
ports.forEach(function(port){
console.log(port.comName);
})
})

var port = new serialPort('com5',{
autoOpen: true,
baudRate: 9600,
dataBits: 8,
partiy: 'none',
stopBits: 1
})

const parser = port.pipe(new readLine());

parser.on('data',console.log)

port.write('fakemessage',function(err){

if(err){
console.trace(err);
}
console.log('message written..')
});

port.open(function(err){
if(err){
console.log(err);
}
});
port.drain();

port.close(function(err){
if(err){
console.log(err)
}
});

Versions, Operating System and Hardware

• SerialPort@? 7.0.2
• Node.js v? 9.40
• Windows? Linux? Mac? windows 10 (home)

[reconbot]

Readline looks for \n by default, are you sure that's what your device is
sending?

On Mon, Oct 1, 2018, 7:55 PM jdshin123 [e-mail] wrote:

Summary of Problem

(Please answer all 3)

• What are you trying to do?

• write and read to/from a comport.

• What happens?

• Does not seem to be able to open a port. When i write to comport,
  the message stays in the buffer but
  never gets sent. When i connect to comport via terminal im able to see
  the message that has not been sent. I also tried closing the port i.e
  port.close() but i get an error saying port is not open.

• What should have happened?

• The message should have been able to go through and receive message

Code to Reproduce the Issue

[image: 2018-10-01 16_42_04-com5 - tera term vt]
https://user-images.githubusercontent.com/7707488/46321671-91b49800-c599-11e8-92a1-76a27797666c.png

const serialPort = require('serialport');
const readLine = require('@serialPort/parser-readLine');

serialPort.list(function(err,ports){
ports.forEach(function(port){
console.log(port.comName);
})
})

var port = new serialPort('com5',{
autoOpen: true,
baudRate: 9600,
dataBits: 8,
partiy: 'none',
stopBits: 1
})

const parser = port.pipe(new readLine());

parser.on('data',console.log)

port.write('fakemessage',function(err){

if(err){
console.trace(err);
}
console.log('message written..')
});

port.open(function(err){
if(err){
console.log(err);
}
});
port.drain();

port.close(function(err){
if(err){
console.log(err)
}
});
Versions, Operating System and Hardware

• SerialPort@? 7.0.2
• Node.js v? 9.40
• Windows? Linux? Mac? windows 10 (home)

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[HipsterBrown]

@jdshin123 Can you confirm that 'COM5' is listed when you run Serialport.list()?

Also, unless you pass the autoOpen: false option to the Serialport construction, then the following code is redundant and will probably throw an error:

var port = new serialPort('com5',{
  autoOpen: true,
  baudRate: 9600,
  dataBits: 8,
  partiy: 'none',
  stopBits: 1
})
port.open(function(err){
  if(err){
    console.log(err);
  }
});

[jdshin123]

@reconbot @HipsterBrown welp.. i'm such a dolt.. you were right! it was a "\n" that was missing.. When i opened the terminal , i had to press enter for the message to display.. Thank you guys!