Better print method

[MikeDombo]

Added a better printing method which enables the decimal point, spaces, hyphens, and underscores.

[mperotto]

Sample code to print string with scroll
`
/* Include DigitLedDisplay Library */
#include "DigitLedDisplay.h"

/* Arduino Pin to Display Pin
7 to DIN,
6 to CS,
5 to CLK */
DigitLedDisplay ld = DigitLedDisplay(7, 6, 5);

const static byte charTable2 [] PROGMEM = {
B01111110, B00110000, B01101101, B01111001, B00110011, B01011011, B01011111, B01110000, // (0) 0123 4567
B01111111, B01111011, B01110111, B00011111, B00001101, B00111101, B01001111, B01000111, // (8) 89AB CDEF
B01100000, B00011000, B00001100, B01000010, B01101100, B01011010, B00110001, B00000111, // (16) •••• ••••
B01000000, B01001000, B01001001, B00000000, B00000000, B00000000, B00000000, B00000000, // (24) •••• ••••
B00000000, B00000000, B00100010, B00000000, B00000000, B00000000, B00000000, B00100000, // (32) ×"× ×××'
B01001110, B01111000, B01100011, B00000000, B10000000, B00000001, B10000000, B00100100, // (40) ()*× ,-./
B01111110, B00110000, B01101101, B01111001, B00110011, B01011011, B01011111, B01110000, // (48) 0123 4567
B01111111, B01111011, B00001001, B00000000, B00000000, B01000011, B01000001, B01100001, // (56) 89:× ×<=>
B00000000, B01110111, B01111111, B01001110, B00111101, B01001111, B01000111, B01011110, // (64) ×ABC DEFG
B00110111, B00000110, B00111100, B00100111, B00001110, B00110110, B01110110, B01111110, // (72) HIJK LMNO
B01100111, B01110011, B01100110, B01011011, B00001111, B00111110, B00100111, B00010011, // (80) PqRS tUVx
B00111111, B00111011, B01101101, B00000000, B00000000, B00010010, B01100010, B00001000, // (88) WYZ× ×^_
B00000010, B01110111, B00011111, B00001101, B00111101, B01001111, B01000111, B01011110, // (96) `Abc dEFG
B00010111, B00010000, B00111100, B00100111, B00110000, B00110110, B00010101, B00011101, //(104) hiJK lMno
B01100111, B01110011, B00000101, B01011011, B00001111, B00011100, B00100011, B00010011, //(112) PqrS tuvx
B00101010, B00111011, B01101101, B01101101, B00000110, B00000000, B00100101, B00000000 //(120) WYZ× |×~×
};

void setup() {

/* Set the brightness min:1, max:15 */
ld.setBright(8);

/* Set the digit count */
ld.setDigitLimit(8);

}

void loop() {

/* Clear all display value */
ld.clear();
delay(500);
ld.setBright(8);
print7Seg("ELETRONICA BRASIL - FACEBOOK - - -");
}

void print7Seg(String myString) {
unsigned int lastStringLength = myString.length();
int mid = 1;
int midfrom;
int scroll = 1;
do {
if (scroll < 8) scroll++; else delay(80);
midfrom = (mid + scroll) - 2;
marquee(midfrom, myString );
mid++;
delay(180);
} while (mid < lastStringLength);
}
void marquee(int midfrom, String myString) {
byte bin;
unsigned int lastStringLength = myString.length();
for (int lcd = 1; lcd <= 8; lcd++) {
if (midfrom >= lastStringLength) {
bin = pgm_read_byte_near(charTable2 + ' ');
delay(80 - (70 - (lcd * 10)));
}
else
{
bin = pgm_read_byte_near(charTable2 + myString.charAt(midfrom)); // pos 1 V
}
ld.write(lcd, bin); // lcd=1
midfrom --;
}
}

`