comport?
 

How can I read the comport input buffer raw. Is there a sort of registry I can look at?

The thing is I think I found a bug in a Coinmech SR3 from moneycontrols and I want to be sure that its not my code before I accuse them.

hmm write a C++ program to dump /dev/ttyS0 to a file?

Hmmm... I use the "standard"-way:
Open it read/write without CTTY, Set the attributes (Canonial comm, etc) and then I'm able to do read and write or fdopen it for buffered communication... Works for me with microcontrollers...

Re: comport?
 

Here's a nice doc about serial port programming:

http://www.easysw.com/~mike/serial/

Thanks for the answers.

Its a bug in the hard ware. Probably I got an old model or something like that. I sent the info to the company and it will be interesting to see how they react.