--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/service/busyboxArduino/LiquidCrystal_V1.2.1/LiquidCrystal/LiquidCrystal_SR.cpp	Sat Jan 03 23:35:16 2015 -0800
@@ -0,0 +1,209 @@
+// ---------------------------------------------------------------------------
+// Created by Francisco Malpartida on 20/08/11.
+// Copyright 2011 - Under creative commons license 3.0:
+//        Attribution-ShareAlike CC BY-SA
+//
+// This software is furnished "as is", without technical support, and with no 
+// warranty, express or implied, as to its usefulness for any purpose.
+//
+// Thread Safe: No
+// Extendable: Yes
+//
+// @file LiquidCrystal_SR.h
+//  Connects an LCD using 2 or 3 pins from the Arduino, via an 8-bit 
+// ShiftRegister (SR from now on).
+// 
+// @brief 
+// This is a port of the ShiftRegLCD library from raron and ported to the
+// LCD library.
+//
+// The functionality provided by this class and its base class is identical
+// to the original functionality of the Arduino LiquidCrystal library and can
+// be used as such.
+//
+// Modified to work serially with the shiftOut() function, an 8-bit
+// unlatched, no-tristate, unidirectional SIPO (Serial-In-Parallel-Out)
+// shift register (IE a very simple SR), and an LCD in 4-bit mode.
+// Any such shift register should do (pref. 74LS family IC's for 2-wire).
+// I used 74LS164, for the reason that's what I had at hand.
+//
+// Connection description:
+//
+// SR output:
+// Bit  #0   - N/C - not connected, used to hold a zero
+// Bit  #1   - N/C
+// Bit  #2   - connects to RS (Register Select) on the LCD
+// Bits #3-6 - connects to LCD data inputs D4 - D7.
+// Bit  #7   - enables the LCD enable-puls (via the diode-resistor AND "gate")
+//
+// 2 or 3 Pins required from the Arduino for Data, Clock and (optional) Enable
+// If not using Enable, the Data pin is used for the enable signal by defining
+// the same pin for Enable as for Data. Data and Clock outputs/pins goes to
+// the shiftregister.
+// LCD RW-pin hardwired to LOW (only writing to LCD).
+// Busy Flag (BF, data bit D7) is not read.
+//
+//  Original project homepage: http://code.google.com/p/arduinoshiftreglcd/
+//
+//
+// History
+// 2012.03.29  bperrybap - Added delays for faster fio shiftout (it got too fast)
+//             AVR needed delay. cmd/write delays are based on CPU speed so it works on pic32.
+//             Added code to support indicating two wire mode by using enable=data pin
+//             (documentation indicated this as working)
+//             Fixed incorrect use of 5x10 for default font - now matches original LQ library.
+//             can now eliminate enable pin in constructor for two wire mode.
+// 2012.01.16  Florian Fida - faster digitalWrite/shiftOut
+// 2011.10.29  fmalpartida - adaption of the library to the LCD class hierarchy.
+// 2011.07.02  Fixed a minor flaw in setCursor function. No functional change, 
+//             just a bit more memory efficient.
+//             Thanks to CapnBry (from google code and github) who noticed it.
+//             URL to his version of shiftregLCD:
+//             https://github.com/CapnBry/HeaterMeter/commit/c6beba1b46b092ab0b33bcbd0a30a201fd1f28c1
+// 2009.07.30  raron - minor corrections to the comments.
+//             Fixed timing to datasheet safe. Fixed keyword highlights.
+// 2009.07.28  Mircho / raron - a new modification to the schematics, and a
+//             more streamlined interface
+// 2009.07.27  Thanks to an excellent suggestion from mircho at the Arduino
+//             playgrond forum, the number of wires now required is only two!
+// 2009.07.25  raron - Fixed comments. I really messed up the comments before 
+//             posting this, so I had to fix it.
+//             Renamed a function, but no improvements or functional changes.
+// 2009.07.23  Incorporated some proper initialization routines
+//             inspired (lets say copy-paste-tweaked) from LiquidCrystal
+//             library improvements from LadyAda.
+// 2009.05.23  raron - first version, but based mostly (as in almost verbatim)
+//             on the "official" LiquidCrystal library.
+//
+//
+// @author F. Malpartida - fmalpartida@gmail.com
+// ---------------------------------------------------------------------------
+#include <stdio.h>
+#include <string.h>
+#include <inttypes.h>
+
+#if (ARDUINO <  100)
+#include <WProgram.h>
+#else
+#include <Arduino.h>
+#endif
+#include "LiquidCrystal_SR.h"
+
+#include "FastIO.h"
+
+
+// CONSTRUCTORS
+// ---------------------------------------------------------------------------
+// Assuming 1 line 8 pixel high font
+LiquidCrystal_SR::LiquidCrystal_SR (uint8_t srdata, uint8_t srclock, 
+                                    uint8_t enable ) 
+{
+	init ( srdata, srclock, enable, 1, 0 );
+}
+
+
+// PRIVATE METHODS
+// ---------------------------------------------------------------------------
+
+//
+// init
+void LiquidCrystal_SR::init(uint8_t srdata, uint8_t srclock, uint8_t enable, 
+                            uint8_t lines, uint8_t font)
+{
+   // Initialise private variables
+   _two_wire = 0;
+   
+   _srDataRegister = fio_pinToOutputRegister(srdata);
+   _srDataBit = fio_pinToBit(srdata);
+   _srClockRegister = fio_pinToOutputRegister(srclock);
+   _srClockBit = fio_pinToBit(srclock);
+   
+   if ((enable == TWO_WIRE) || (enable == srdata))
+   {
+      _two_wire = 1;
+      _srEnableRegister = _srDataRegister;
+      _srEnableBit = _srDataBit;
+   }
+   else
+   {
+      _srEnableRegister = fio_pinToOutputRegister(enable);
+      _srEnableBit = fio_pinToBit(enable);
+   }
+   
+   // Configure control pins as outputs
+   // ------------------------------------------------------------------------
+   
+   _displayfunction = LCD_4BITMODE | LCD_1LINE | LCD_5x8DOTS;
+}
+
+//
+// shiftIt
+void LiquidCrystal_SR::shiftIt(uint8_t val)
+{
+   if (_two_wire)
+   {
+      // Clear to get Enable LOW
+      fio_shiftOut(_srDataRegister, _srDataBit, _srClockRegister, _srClockBit);
+   }
+   fio_shiftOut(_srDataRegister, _srDataBit, _srClockRegister, _srClockBit, val, MSBFIRST);
+   
+   // LCD ENABLE PULSE
+   //
+   // While this library is written with a shift register without an output
+   // latch in mind, it can work in 3-wire mode with a shiftregister with a
+   // latch. The shiftregister latch pin (STR, RCL or similar) is then
+   // connected to the LCD enable pin. The LCD is (very likely) slower
+   // to read the Enable pulse, and then reads the new contents of the SR.
+   ATOMIC_BLOCK(ATOMIC_RESTORESTATE)
+   {
+      fio_digitalWrite_HIGH(_srEnableRegister, _srEnableBit);
+      waitUsec (1);         // enable pulse must be >450ns               
+      fio_digitalWrite_SWITCHTO(_srEnableRegister, _srEnableBit, LOW);
+   } // end critical section
+}
+
+// PUBLIC METHODS
+// ---------------------------------------------------------------------------
+
+
+/************ low level data pushing commands **********/
+//
+// send
+void LiquidCrystal_SR::send(uint8_t value, uint8_t mode)
+{
+   // Divide byte in two nibbles include the RS signal
+   // and format it for shiftregister output wiring to the LCD
+   // We are only interested in my COMMAND or DATA for myMode
+   uint8_t myMode = ( mode == DATA ) ? SR_RS_BIT : 0; // RS bit; LOW: command.  HIGH: character.
+   
+   if ( mode != FOUR_BITS )
+   {
+      shiftIt(myMode | SR_EN_BIT | ((value >> 1) & 0x78)); // upper nibble
+   }
+
+   shiftIt(myMode | SR_EN_BIT | ((value << 3) & 0x78)); // lower nibble
+   /*
+    * Add some delay since this code is so fast it needs some added delay
+    * even on AVRs because the shiftout is shorter than the LCD command execution time.
+    */
+#if (F_CPU <= 16000000)
+   if(_two_wire)
+   	delayMicroseconds ( 10 );
+   else
+   	delayMicroseconds ( 17 ); // 3 wire mode is faster so it must delay longer
+#else
+   delayMicroseconds ( 37 );      // commands & data writes need > 37us to complete
+#endif
+
+}
+
+//
+// setBacklightPin
+void LiquidCrystal_SR::setBacklightPin ( uint8_t pin, t_backlighPol pol )
+{ }
+
+//
+// setBacklight
+void LiquidCrystal_SR::setBacklight ( uint8_t mode ) 
+{ }
+