FREE SERIAL MONITOR SERIAL
Do not wire up TX or flow control - loop them back if you must instead. Free Serial Analyzer is a non-intrusive Serial Port sniffer and software RS-232/RS-422/RS-485 protocol analyzer for Windows. RS232 isn't supposed to be used like that, but it will do it provided you keep the number of machines to two or three (I have had six, but don't recommend it) and only wire up the RX and earth leads.
You have two options: go with SerialPort Monitor that Rajesh suggested - I've never heard of it, so I can't comment on wetehre it would work - or go with a physical solution and wire the incoming data to two serial ports on the same PC. You don't want data being read by two devices simultaneously because you would not get repeatable results. When the port is open, it can only be accessed by a single process on the entire machine - which makes sense, if you think about normal operations. The normally, a physical Serial Port is a two - device link, and the SerialPort control mimics this. Not sure if I explained right, but i need to monitor (with my app) the serial communication between another app in my computer and an external device." Advanced filters let you eliminate unnecessary data, making it easier to concentrate on the information you need. This RS232 monitor displays exactly the subset of serial data that interests you. To submit feedback, please create an issue on our GitHub page. Serial Port Analyzer was developed to perform serial monitoring, displaying, and logging a system’s serial communication transmission. We appreciate any feedback you have to help improve this extension. This is often useful when testing or debugging programs on embedded devices.
" If I set up the serial port the way presented in MSDN will i be able to open the same port with another app? The Serial Monitor extension provides a serial monitor to view output from as well as send messages to serial ports. You could have found this with a simple Google. The simplest approach is just to set up a SerialPort (see MSDN for the basics) then attach a handler to the SerialPort.DataReceived event MSDN example.
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