2021-01-04 17:18:14 +00:00
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[](https://github.com/marketplace/actions/arduino_ci)
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[](https://github.com/RobTillaart/ParallelPrinter/blob/master/LICENSE)
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[](https://github.com/RobTillaart/ParallelPrinter/releases)
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2020-06-24 15:02:26 +00:00
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# ParallelPrinter
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2020-06-25 08:19:33 +00:00
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Arduino library that implements a parallel printer - uses print interface
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## Description
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This **experimental** library defines a simple parallel printer object.
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2021-01-04 17:18:14 +00:00
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It implements the **Print interface** to be able to print all datatypes using **print()** and **println()**
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The printer writes every byte over 8 parallel lines including a **STROBE** (clock) pulse,
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while waiting for the connected printer not to be **BUSY** or **OUT OF PAPER**.
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2020-06-25 08:19:33 +00:00
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This library is meant to be a starting point to make a "printer driver" for a
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specific parallel printer. These can often be bought in 2nd hand stores or so.
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Have fun!
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2021-01-04 17:18:14 +00:00
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**Note:** This lib is a extended redo of the ParPrinter class.
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2020-06-25 08:19:33 +00:00
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## Interface
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2021-01-04 17:18:14 +00:00
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### Constructor
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- **ParallelPrinter()** uses default pins (10, 2, 12, \[3,4,5,6,7,8,9,10\])
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- **ParallelPrinter(strobe, busy, oop, arr)** define 3 control pins + 8 datapins (= arr)
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- **begin(linelength, pagelength)** set line and page length parameters
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### Print interface
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- **write(c)** send a single byte to printer, implements Print interface. Therefor all **print()** and **println()** functions will work.
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- **formfeed()** to eject current page.
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### Config
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- **setLineLength(n)** idem
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- **getLineLength()** idem
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- **setPageLength()** idem
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- **getPageLength()** idem
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- **getLineNumber()** idem
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- **getPageNumber()** idem
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- **getPosition()** idem
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- **setTabSize(n)** tabs are replaced by spaces. n can be 0 or any size!
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- **getTabSize()** returns tabSize set
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- **setLineFeed(n)** n = 1,2,3 1 = default
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- **getLineFeed()** returns lineFeed set
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- **printLineNr(b)** true, false
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### Expert mode
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2020-06-25 08:19:33 +00:00
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2021-01-04 17:18:14 +00:00
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- **isOutOfPaper()** to check paper tray before printing starts.
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- **setStrobeDelay(n = 2000)** make the strobe pulse shorter == faster printing
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allows tuning of performance. Default value = 2000. Time in microseconds.
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- **getStrobeDelay()** returns value set.
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2020-06-25 08:19:33 +00:00
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## See also
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https://en.wikipedia.org/wiki/Parallel_port#Centronics
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## Operation
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See examples
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