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VirtualSerialPort

Node

virtual-serialport

• Seems to be based on npm serialport 3.0, see Bug #9 is it updated for a list of missing serialport 4.0.7 methods.

• https://github.com/reyiyo/virtual-serialport
  • Source for https://www.npmjs.com/package/virtual-serialport
  • As of 3/22/17, last change 1/7/17
• https://github.com/qdot/virtual-serialport
  • As of 3/22/17, last change 7/17/16

Other Node virtual serial port

• https://www.npmjs.com/package/serialport-io - not really loopback, but is virtual! Uses socket.io as a transport layer to a remote machine?

Mac

We want a virtual serial port so that we can test the serial port on the Mac by sending and receiving data.

See http://stackoverflow.com/questions/52187/virtual-serial-port-for-linux

Fortunately, mac port has socat!

Terminal 1:

 sudo port install socat
 socat -d -d pty,raw,echo=0 pty,raw,echo=0

You will get something like:

 2017/02/24 11:12:25 socat[8421] N PTY is /dev/ttys006
 2017/02/24 11:12:25 socat[8421] N PTY is /dev/ttys007
 2017/02/24 11:12:25 socat[8421] N starting data transfer loop with FDs [5,5] and [7,7]

Note the two port names.

In Terminal 2:

 cat < /dev/ttys006

In Terminal 3:

 echo "Test" > /dev/ttys007

Terminal 2 should show the "Test" output.