--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/service/busyboxArduino/LiquidCrystal_V1.2.1/LiquidCrystal/examples/i2cLCDextraIO/i2cLCDextraIO.pde	Mon Jan 19 18:02:27 2015 -0800
@@ -0,0 +1,246 @@
+// ---------------------------------------------------------------------------
+// Created by Francisco Malpartida on 1/1/12.
+// Copyright 2011 - Under creative commons license:
+//        Attribution-NonCommercial-ShareAlike CC BY-NC-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 i2CLCDextraIO.pde
+// Temperature logging to demonstrate the I2CLCDextraIO library.
+// 
+// @brief This application is a demostration file for the I2CLCDextraIO library
+// that reads a temperature from the internal ATMEGA328p temperature sensor
+// and displays it on the LCD. The application also demonstrates some of the
+// methods of the library, such as loading custom characters to the LCD,
+// moving around the LCD, and writing to it.
+//
+// @author F. Malpartida
+// ---------------------------------------------------------------------------
+#include <Wire.h>
+#include <LCD.h>
+
+#define _LCD_I2C_
+
+#ifdef _LCD_I2C_
+#include <LiquidCrystal_I2C.h>
+#endif
+
+#ifdef _LCD_4BIT_
+#include <LiquidCrystal.h>
+#endif
+
+
+/*!
+    @defined    CHAR_WIDTH
+    @abstract   Character witdth of the display, expressed in pixeles per character.
+*/
+#define CHAR_WIDTH  5
+
+/*!
+    @defined    BACKLIGHT_PIN
+    @abstract   LCD backlight pin definition.
+    @discussion AVR pin used for the backlight illumintation of the LCD.
+*/
+#define BACKLIGHT_PIN          7
+
+/*!
+    @defined    TEMP_CAL_OFFSET
+    @abstract   Temperature calibration offset.
+    @discussion This is the offset value that has to be modified to get a
+                correct temperature reading from the internal temperature sensor
+                of your AVR.
+*/
+#define TEMP_CAL_OFFSET 334
+
+/*!
+    @defined    FILTER_ALP
+    @abstract   Low pass filter alpha value
+    @discussion This value defines how much does the current reading, influences
+                the over all value. The smaller, the less influence the current
+                reading has over the overall result.
+*/
+#define FILTER_ALP 0.1
+
+extern unsigned int __bss_end;
+extern unsigned int __heap_start;
+extern void *__brkval;
+
+#ifdef _LCD_I2C_
+LiquidCrystal_I2C lcd(0x38);  // set the LCD address to 0x20 for a 16 chars and 2 line display
+#endif
+
+#ifdef _LCD_4BIT_
+LiquidCrystal lcd(12, 11, 5, 4, 3, 2, BACKLIGHT_PIN, POSITIVE);
+#endif
+const int    CONTRAST_PIN  = 9;
+const int    CONTRAST      = 65;
+
+
+
+LCD *myLCD = &lcd;
+
+static double tempFilter;
+
+
+/*!
+    @const      charBitmap 
+    @abstract   Define Character bitmap for the bargraph.
+    @discussion Defines a character bitmap to represent a bargraph on a text
+    display. The bitmap goes from a blank character to full black.
+*/
+const uint8_t charBitmap[][8] = {
+   { 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 },
+   { 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x0 },
+   { 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x0 },
+   { 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x0 },
+   { 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x0 },
+   { 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x0 },
+   { 0xe, 0x11, 0x11, 0x11, 0xe, 0, 0, 0 },
+   { 0x6, 0x9, 0x9, 0x6, 0x0, 0, 0, 0}
+};
+
+/*!
+    @function
+    @abstract   Return available RAM memory
+    @discussion This routine returns the ammount of RAM memory available after
+                initialising the C runtime.
+    @param      
+    @result     Free RAM available.
+*/
+
+static int freeMemory() 
+{
+  int free_memory;
+
+  if((int)__brkval == 0)
+     free_memory = ((int)&free_memory) - ((int)&__bss_end);
+  else
+    free_memory = ((int)&free_memory) - ((int)__brkval);
+
+  return free_memory;
+}
+
+/*!
+    @function
+    @abstract   Returns AVR328p internal temperature
+    @discussion Configures the ADC MUX for the temperature ADC channel and
+                waits for conversion and returns the value of the ADC module
+    @result     The internal temperature reading - in degrees C 
+*/
+
+static int readTemperature()
+{
+   ADMUX = 0xC8;                          // activate interal temperature sensor, 
+                                          // using 1.1V ref. voltage
+   ADCSRA |= _BV(ADSC);                   // start the conversion
+   while (bit_is_set(ADCSRA, ADSC));      // ADSC is cleared when the conversion 
+                                          // finishes
+                                          
+   // combine bytes & correct for temperature offset (approximate)
+   return ( (ADCL | (ADCH << 8)) - TEMP_CAL_OFFSET);  
+}
+
+/*!
+    @function
+    @abstract   Braws a bargraph onto the display representing the value passed.
+    @discussion Draws a bargraph on the specified row using barLength characters. 
+    @param      value[in] Value to represent in the bargraph
+    @param      row[in] Row of the LCD where to display the bargraph. Range (0, 1)
+                for this display.
+    @param      barlength[in] Length of the bar, expressed in display characters.
+    @param      start[in]     Start bar character
+    @param      end [in]      End bar character
+
+    @result     None
+*/
+static void drawBars ( int value, uint8_t row, uint8_t barLength, char start, 
+                       char end )
+{
+   int numBars;
+
+   // Set initial titles on the display
+   myLCD->setCursor (0, row);
+   myLCD->print (start);
+
+   // Calculate the size of the bar
+   value = map ( value, -30, 50, 0, ( barLength ) * CHAR_WIDTH );
+   numBars = value / CHAR_WIDTH;
+   
+   // Limit the size of the bargraph to barLength
+   if ( numBars > barLength )
+   {
+     numBars = barLength;
+   }
+   myLCD->setCursor ( 1, row );
+   
+   // Draw the bars
+   while ( numBars-- )
+   {
+      myLCD->print ( char( 5 ) );
+   }
+   
+   // Draw the fractions
+   numBars = value % CHAR_WIDTH;
+   myLCD->print ( char(numBars) );
+   myLCD->setCursor (barLength + 1, row);
+   myLCD->print (end);
+
+}
+
+void setup ()
+{
+   int i; 
+   int charBitmapSize = (sizeof(charBitmap ) / sizeof (charBitmap[0]));
+   
+   Serial.begin ( 57600 );
+   analogReference ( INTERNAL );
+   
+#ifdef _LCD_4BIT_
+  pinMode(CONTRAST_PIN, OUTPUT);
+  lcd.backlight();
+  digitalWrite(BACKLIGHT_PIN, HIGH);
+  analogWrite (CONTRAST_PIN, CONTRAST);
+#else
+  pinMode ( BACKLIGHT_PIN, OUTPUT );
+  digitalWrite(BACKLIGHT_PIN, HIGH);
+#endif
+
+   myLCD->begin ( 16, 2 );
+  
+   // Load custom character set into CGRAM
+   for ( i = 0; i < charBitmapSize; i++ )
+   {
+      myLCD->createChar ( i, (uint8_t *)charBitmap[i] );
+   }
+   Serial.println ( freeMemory () );
+
+   myLCD->clear ();
+   myLCD->print ("Temp:");
+
+   tempFilter = readTemperature (); // Initialise the temperature Filter
+
+}
+
+
+void loop ()
+{
+  int temp;
+  
+  temp = readTemperature();
+  tempFilter = ( FILTER_ALP * temp) + (( 1.0 - FILTER_ALP ) * tempFilter);
+
+  myLCD->setCursor ( 8, 0 );
+  myLCD->print ("     ");
+  myLCD->setCursor ( 8, 0 );
+  myLCD->print ( tempFilter, 1 );
+  myLCD->setCursor ( 12, 0 );
+  myLCD->print ( "\x07" );
+  myLCD->print ("C");  
+  drawBars ( tempFilter, 1, 14, '-', '+' );
+  
+  delay (200);
+}