Sniffing serial port raspberry pi

To sniff serial port you need
- two serial ports (can be usb extension)
- install this software http://jpnevulator.snarl.nl/

with this commend all data will passed between interface AMA0 and USB0


 jpnevulator --ascii  --timing-print  --tty /dev/ttyAMA0 --tty /dev/ttyUSB0 -r --pass

On windows I recommend:

http://realterm.sourceforge.net/



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