ParallelPrinter

Arduino library that implements a parallel printer - uses print interface

Description

This experimental library defines a simple parallel printer object.

It implements the Print interface to be able to print all datatypes. It writes every byte over 8 parallel lines including a STROBE (clock) pulse, while waiting for the connected printer to not be BUSY or OUT OF PAPER.

This library is meant to be a starting point to make a "printer driver" for a specific parallel printer. These can often be bought in 2nd hand stores or so.

Have fun!

Note: This lib is a extended redo of the ParPrinter class.

Interface

• ParallelPrinter(strobe, busy, oop, arr) define 3 control pins + 8 datapins (= arr)

• begin(linelength, pagelength) set page parameters

• write(c) send a single byte to printer, implements Print interface.

• setTabSize(n) tabs are replaced by spaces. n = 2,4,6,8

• setLineFeed(n) n = 1,2,3 1 = default

• printLineNr(b) true, false

• formfeed() to eject current page

• isOutOfPaper() check paper tray before printing starts

• setStrobeDelay(n) make the strobe pulse shorter == faster printing allows tuning of performance. Typical value = 2000. Time in micros. use with care.

See also

https://en.wikipedia.org/wiki/Parallel_port#Centronics

Operation

See examples