LCD counter

[gorankg]

Evo ti za PIC19F4620. Može da se primeni praktično na bilo koji 8-bitni.

Code:

#include <xc.h>
#include <stdlib.h>
#include "hd44780.h"
#include "cfg.h"

#define    _XTAL_FREQ    40000000        /* Crystal frequency in MHz */    



unsigned long c;

void interrupt ISR(void)
{
   if(TMR1IF)
   {
       TMR1IF = 0;      
   }
}



void main(void)
{
unsigned char i;
char lcd[10];

   RCON = 0b00011111;

   for(i=0;i<10;i++){__delay_ms(100);}

    CMCON = 0x07;                

    LATA = 0;
    TRISA = 0xFF;        
    LATB = 0;     
    TRISB = 0xFF;
    LATC = 0;
    TRISC = 0xFF;            
    LATD = 0;
    TRISD = 0xFF;
    ADCON1 = 0x0F;
    LATE = 0x00;
    TRISE = 0x00;

    OpenLCD();
    ClearLCD();

   TMR1L = 0;
   TMR1H = 0;
   T1CON = 0b10000111;
   TMR1IF = 0;
   TMR1IE = 1;
   
    PEIE = 1;
    GIEL = 1;
   GIEH = 1;

    while(1)
    {
       for(i=0;i<10;i++){__delay_ms(100);}

       c = (unsigned long)((TMR1H << 8) + TMR1L);

       ltoa(lcd, c, 10);
       GotoLCD(0,0);
       PutsLCD(lcd);
    
   }
}

Ovo ti broji samo u jednom smeru do vrednosti promenljive od dva bajta (65535).