[TOC]

comxd

Another serial port tool

This is my practice work with U++ at the very beginning. Now, it helps me a lot, not a toy again. I hope it helps more people.

comxd has a internal virtual terminal as described below. We adopted a versatile terminal implementation from v2.2.18. We'll maintain the internal terminal, but it should be deprecated someday.

comxd was designed for hardware engineers. It supports

• serial port
• SSH
• TCP Client
• Pipe Client [ Windows only ]
• Pipe Server [ Windows only ]

We call these devices as serial I/O, they are popular on smart devices. Virtual terminal is not the main function of comxd, but "Assistant".

Most of hardware engineers could use it expertly without any help. comxd is a convinient tool for our engineers, we use it to download firmware, debug communication protocol, deploy softwares to target board, .etc. I'll show some ocassions to use comxd later. It's a plesure if this tool helps you.

Usage

As a serial device

• About
  • Input region is encoded in UTF-8
  • Press this button，it will transcode the UTF-8 characters to current codec stream

If you have a vmware station, pipe client will help you.

• Add a serial device

  

• Test it

  sudo bash -c 'echo hello world > /dev/ttyS0'

  

Transmit File(s)

• support xmode and kermit

• support special ymodem

  We have a special device that does not support standard ymodem, so do not use it.

• support SCP

Codec Tool

• press on the toolbar

Download/Upload by SCP

• Press the up arrow to upload file
• Press the down arrow to download file

ECMA-48

This is a kind of specification which defines control functions and their coded representations for use in a 7-bit code, an extended 7-bit code, an 8-bit code or an extended 8-bit code.

It says we do not have to support all features defined in ECMA-048. Yes, it's true. If we support all of them, it must be a complicated work I've never experienced.

vt100

• Features/Sequences were ignored

  • Auto wrap. We have unlimited line width, I like it, so we ignore line wrap
  • VT52 control sequences.
  • DECLL
  • DECTST
  • MC
  • Printer. We response "No printer"

• Keys were supported

  • Control + ...

  • Direction keys

  • HOME

ANSI

• All sequences were recognized
• ANSI Extended charset

vt220

• charsets

vt320

• charsets

vt420

• most of charsets

vt520

• most of charsets
• All sequences were recognized (well, most of...)
• DCS OSC, .etc were ignored
• We do not process most of sequences

xterm

• most of charsets
• Ignore a lot of sequences

Summary

• It's a real compicated work to implent a virtual terminal
• No Sixel，No ReGIS
• Enough for our applications
• Will add more features if we need