Arduino library that implements a parallel printer - print interface

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README.md

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 using print() and println() The printer writes every byte over 8 parallel lines including a STROBE (clock) pulse, while waiting for the connected printer not to 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

Constructor

ParallelPrinter() uses default pins (10, 2, 12, [3,4,5,6,7,8,9,10])
ParallelPrinter(strobe, busy, oop, arr) define 3 control pins + 8 datapins (= arr)
begin(linelength, pagelength) set line and page length parameters

Print interface

write(c) send a single byte to printer, implements Print interface. Therefor all print() and println() functions will work.
formfeed() to eject current page.

Config

setLineLength(n) idem
getLineLength() idem
setPageLength() idem
getPageLength() idem
getLineNumber() idem
getPageNumber() idem
getPosition() idem
setTabSize(n) tabs are replaced by spaces. n can be 0 or any size!
getTabSize() returns tabSize set
setLineFeed(n) n = 1,2,3 1 = default
getLineFeed() returns lineFeed set
printLineNr(b) true, false

Expert mode

isOutOfPaper() to check paper tray before printing starts.
setStrobeDelay(n = 2000) make the strobe pulse shorter == faster printing allows tuning of performance. Default value = 2000. Time in microseconds.
getStrobeDelay() returns value set.

Operation

See examples