Small Python program to spy on serial communication. Requires the null-modem emulator
com0com to be set up (http://com0com.sourceforge.net/). Have whatever program you want
to spy on talk to a virtual port you've set up using that utility. Configure
computerPort in the main file to be the complimentary port. devicePort should be
the port of your physical device.
Turns this:
_____________________________________________ __________
| COMPUTER | | DEVICE |
| | | |
| | | |
| Program------------------------------COMx---|--------| |
| | | |
|_____________________________________________| |__________|
Into this (using com0com):
_______________________________________________ __________
| COMPUTER | | DEVICE |
| _____________________ | | |
| | serialSpy.py | | | |
| Program--virtualCOMy--|--virtualCOMz--COMx--|-|------| |
| |_____________________| | | |
|_______________________________________________| |__________|