piclist 2002\08\24\100610a >
Thread: Simulating a printer
www.piclist.com/techref/index.htm?key=simulating+printer
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face BY : Rodrigo Real email (remove spam text)



Hi,

I have a laboratory equipment that performs some chemical data
analysis and emits a printed report. The printer port is the only
output interface to the world.

The problem is that I would like to capture the data with a computer.
I tried, ingenuously, to make a polling software to read the data, of
course it failed loosing some characters. Even though I have taken
care of the handshaking, I guess the problem is with the STROBE short
duration.

I have searched the Internet for a simple solution, but I still did
not found, everybody that had the same problem solved in some other
way.

I have found LPTCAP
(http://home.clear.net.nz/pages/kheidens/lptcap/lptcap.htm), which
seems to do the job, but I would like to know your opinion about what
would be the best choice.

I think that maybe the simplest thing to do is to convert the parallel
signal to serial, and read it nicely through the serial port. But I don't
know exactly how can I convert the parallel signal sent to a printer
to a serial one.

Any comments should help,
Thanks,
Rodrigo

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