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Odd project:
I have two devices that speak to each other via RS232. I don't know any of the settings, but I think I can guess, ar do a trial and error until I find the baud rate.
I want to build a device that splices into the wires that connects the two commumicating devices and reads the data that goes back and forth.
I am using a PIC 18F4550.
Is this possible? Any thoughts on how to do it or what problems I might face?
Cheers,
Sterling
Google using "RS232 sniffer" and you'll find lots of links like...
If at least a PC software run, YES you need a COM port sniffer on this PC, unless, Hyperterminal or MicroCode studio Serial Communicator will do the trick.
There's also protocol analyser software
There's also auto-baud detect EUSART PIC
I use HHD Software Serial Monitor... REALLY NICE, but not free...
SterlingY, You could (If you have a scope) look at the minimum width of a high period of the data signal and compute the baudrate. 1/minimum period = baudrate.
Dave Purola,
N8NTA
Hi,
Like Mister_e says, if either of the two devices is a PC, you could use a software-only solution.
I have been very impressed with http://www.serial-port-monitor.com/index.html
And this is *free*.
Hope you find it as useful as what I have.
Regards,
Anand