Overview
What is S-Jinn?
S-Jinn is a free, lightweight, open-source Linux application
written in C. It is a simple command-line tool designed for sending
& receiving data from PC controlled TIA/EIA-232 (RS-232) test,
measurement, and control devices.
Depending on your application you may be able to use stty or
C-Kermit, but I believe you will find that S-Jinn is easier-to-use,
more intuitive, and more concise in the area of command-line and/or
scripted RS-232 data acquisition and control.
Popular Linux communications packages like Minicom will also
communicate with RS-232 devices, but they are better suited to
modems, computers, network devices, etc. They typically lack
support for all combinations of UART communication settings
required by many of the RS-232 test, measurement, and control
devices on the market.
Most communications packages also lack command-line support.
Some provide scripting languages, but S-Jinn frees you from
application-specific languages. S-Jinn simply directs the data to
STDOUT where you can display it, pipe it, and/or redirect it to be
processed by your favorite Unix shell and/or scripting language
regardless of whether you prefer Bash, Python, Perl, Expect, or you
name it.
Other S-Jinn features include the ability to:
- Control RS-232 DTR and RTS lines from the command-line
- Display DTR, RTS, CTS & DSR status
- Send control characters (including the NULL character)
- Send values in hex
- Specify read length
- Set programable delay times for both send & read.
- Support for virutally all baud rates, parity, and data lengths
found in standard PC UARTS
- Output Formatting: ASCII, hex, ASCII-over-hex, wrap text,
truncate lines, supress trailing line feeds
What S-Jinn Is Not
It is not designed to be used for serial communications with
modems or for use as a terminal emulator. There are a large number
of free open-source applications available that are much better
suited for that. Rather S-Jinn is written to work with RS-232 based
data acquisition equipment such as: Multimeters, A/D modules , D/A
modules, digital inidicators, gauge multiplexers, temperature
sensors, humidity sensors, etc.
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