Numeric LCD Display - Serial, Expandable - Sunrom Technologies

*
Author: Sunrom Technologies http://www.sunrom.com
Date: 28th Sep 2012
Hardware Model: Numeric LCD Display Model 1129
Compiler: Keil C51
Shows demo how to control the LCD serially
*/
#include
#include
#include
// Hardware Inteface to MCU
#define CLOCK P2_0
#define LATCH P2_1
#define SDATA P2_2
#define COM P2_3
#define TIMER0_COUNT 0xDC11 /* 10000h - ((11,059,200 Hz / (12 * FREQ)) - 17) */
#define NUMBER_OF_REGISTERS 4
unsigned char digits[NUMBER_OF_REGISTERS]; // we will seperate a integer and
use this variable to store seperated digits
unsigned int count; // we will create a count variable and make it go from 0 to
9999
unsigned char cflag;
// This array has values as to which segment becomes on for a digit from 0 to 9
code unsigned char SegmentMapping[12] =
{
119, //0
17, //1
107, //2
59, //3
29, //4
62, //5
126, //6
19, //7
127, //8
63, //9
0x00, //10: All OFF
0x80 //11: Special mapping for only 1 segment of display
};
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Delay x Milisecond
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-*/
void delay_ms(unsigned int x) // delays x msec (at fosc=11.0592MHz)
{
unsigned char j=0;
while(x-- > 0)
{
for (j=0; j