////////////////////////////////////////////////////////////////////////////
////                             EX_92LCD.C                             ////
////                                                                    ////
////  This program displays 0-9999 on a LCD connected directly to a     ////
////  923/924 chip.                                                     ////
////                                                                    ////
////  Configure the CCS prototype card as follows:                      ////
////      Use the 92x Adaptor with the 92x lcd module plugged into it.  ////
////                                                                    ////
////////////////////////////////////////////////////////////////////////////
////        (C) Copyright 1996,1997 Custom Computer Services            ////
//// This source code may only be used by licensed users of the CCS C   ////
//// compiler.  This source code may only be distributed to other       ////
//// licensed users of the CCS C compiler.  No other use, reproduction  ////
//// or distribution is permitted without written permission.           ////
//// Derivative programs created using this software in object code     ////
//// form are not restricted in any way.                                ////
////////////////////////////////////////////////////////////////////////////

#include <16C924.H>
#fuses hs,nowdt,put

#use delay(clock=10000000)

/////////////////////////////////////////////////////////////////////////////////////////                 
//                                 LCD Configuration                                   //
/////////////////////////////////////////////////////////////////////////////////////////
// Digit segments    A        B        C        D        E        F        G        DP
//                   b7       b6       b5       b4       b3       b2       b1       b0
#define DIGIT4    COM1+26, COM1+17, COM2+17, COM3+26, COM2+25, COM1+25, COM2+26, COM3+17
#define DIGIT3    COM1+24, COM1+16, COM2+16, COM3+24, COM2+23, COM1+23, COM2+24, COM3+16
#define DIGIT2    COM1+22, COM1+19, COM2+19, COM3+22, COM2+21, COM1+21, COM2+22, COM3+19
#define DIGIT1    COM1+20, COM1+18, COM2+18, COM3+20, COM2+28, COM1+28, COM2+20, COM3+18
//
//         character         0    1    2    3    4    5    6    7    8    9  
byte const Digit_Map[10] = {0xFC,0x60,0xDA,0xF2,0x66,0xB6,0xBE,0xE0,0xFE,0xE6};

#define BLANK 0
#define DASH 11
/////////////////////////////////////////////////////////////////////////////////////////


byte lcd_pos;

void lcd_putc(char c) {
   byte segments;

   if(c=='\f')
     lcd_pos=0;
   else {
      if((c>='0')&&(c<='9'))
         segments=Digit_Map[c-'0'];
      else
         segments=BLANK;
      switch(lcd_pos) {
        case 1 : lcd_symbol(segments,DIGIT4); break; // fill 1000s place
        case 2 : lcd_symbol(segments,DIGIT3); break; // fill  100s place
        case 3 : lcd_symbol(segments,DIGIT2); break; // fill   10s place
        case 4 : lcd_symbol(segments,DIGIT1); break; // fill    1s place
      }
   }
   lcd_pos++;
}


main() {
   long number = 0;

   setup_lcd(LCD_MUX14|STOP_ON_SLEEP,2,ALL_LCD_PINS);

   while(TRUE) {
      printf(lcd_putc,"\f%4lu",number);
      if(number++==10000)
        number=0;
      delay_ms(100);
   }
}