//

// FILE: parprinter.cpp

// AUTHOR: Rob Tillaart

// VERSION: 0.1.00

// PURPOSE: parallel printer class that implements the Print interface

// DATE: 2013-09-30

// URL:

//

// Released to the public domain

//

#include "ParPrinter.h"

ParPrinter::ParPrinter()

{

// define pins

for (uint8_t i = 0; i < 8; i++)

{

pin[i] = 2+i;

}

}

void ParPrinter::begin()

{

pinMode(BUSY, INPUT);

pinMode(STROBE, OUTPUT);

for (uint8_t i = 0; i < 8; i++)

{

pinMode(pin[i], OUTPUT);

}

}

// write() must implement the virtual write of the Print class

size_t ParPrinter::write(uint8_t data)

{

while(digitalRead(BUSY) == HIGH);

for (uint8_t i = 0; i < 8; i++)

{

digitalWrite(pin[i], bitRead(data, i) ); // direct port access will be faster

}

digitalWrite(STROBE, LOW);

delay(2); // main time consuming part, so max 500chars/second = 10 lines.

digitalWrite(STROBE, HIGH);

while (digitalRead(BUSY) == HIGH);

return 1;

}

/*

derive CLass HP: ParPrinter

{

}

*/

// -- END OF FILE --