nokia5110

HISTORY:
========
21 Feb 2012: Initial edit and release
22 Oct 2013: Updated for BoneScript 0.2.4

SUMMARY:
========
This is a set of bonescript files that where written to control a
Nokia 5110 LCD display from Adafruit or Sparkfun.

http://www.adafruit.com/products/338
https://www.sparkfun.com/products/10168

USE:
====

1) Download the LCD_5110.js file and put it at the same level as the calling program.
2) To use these routines, put the following in your program:

var lcd = require('./LCD_5110.js');

3) Define the digital outputs used to control the LCD:

lcd.PIN_SCLK = "P?_?";
lcd.PIN_SDIN = "P?_?";
lcd.PIN_DC = "P?_?";
lcd.PIN_SCE = "P?_?";
lcd.PIN_RESET = "P?_?";

4) Call setup():

lcd.setup();

FUNCTIONS:
==========

//
// setup ()
// reset lcd and set up set up display contrast and bias
//
//
// write(dataORcommand, data)
// Write data or command to lcd
//
//
// gotoXY( column, row)
// set current lcd position to row/column
//
//
// inverse(mode)
// turn inverse mode on or off
//
//
// bitmap(array)
// send bitmap to LCD at current position
//
//
// character(char)
// outputs ASCII char (0x20 - 0x7f) at current position
//
//
// string(string)
// outputs ASCII string (0x20 - 0x7f) at current position
//
//
// clear()
// clears lcd by sending spaces to the entire display
// leaves current position at (0,0)
//
//
// Scroll routines: (scrolls happen on one row between (4,row) and (82,row)
// scrollInit(row) - clears the scroll area and init local vars
// scroll(row, string) - scrolls string one char, repeat call to scroll again
// scrollLength(string) - returns number to scroll string one time off screen
//
//
// Progress Bar Routines: (Progress Bar happens between (2,row) and (82,row)
// progressInit(row) - clears the scroll area and init local vars
// progressBar(row, value) - draws a progress bar of value length
// value from 0 to 100
//