+ initial version

libraries/ParPrinter/ParPrinter.cpp

@@ -0,0 +1,56 @@
+//
+//    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 --

libraries/ParPrinter/ParPrinter.h

@@ -0,0 +1,41 @@
+//
+//    FILE: ParPrinter.h
+//  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
+//
+
+#ifndef ParPrinter_h
+#define ParPrinter_h
+
+#if defined(ARDUINO) && ARDUINO >= 100
+#include "Arduino.h"
+#else
+#include "WProgram.h"
+#endif
+
+#define PARPRINTER_VERSION "0.1.00"
+
+#include "Print.h"
+
+// constant pin numbers
+#define STROBE          13  // same as build in LED ! makes it visible
+#define BUSY            2
+#define OUT_OF_PAPER    12
+
+class ParPrinter: public Print
+{
+public:
+    ParPrinter();  // lets assume fixed pins for now,
+    void begin();
+    size_t write(uint8_t);
+
+private:
+    uint8_t pin[8];
+};
+#endif
+// -- END OF FILE --