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pkipyy
Joined: 21 Nov 2013
Posts: 25
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| real time clock |
 Posted: Sun Dec 15, 2013 10:13 am |
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I revised command delay time.
I used 500kHz internal oscillator for clock source.
Also this code shows how to use watch dog timer.
| Code: |
#include <16f1937.h>
#use delay(clock = 500000)
#fuses NOLVP,WDT
#byte PORTB =0x0d
#byte PORTC = 0x0e //PORTC
#byte TRISB = 0x8d
#byte TRISC = 0x8e
#byte LAtC = 0x10E
#byte OPTION_REG = 0x95
#byte OSCCON = 0x99
#byte INTCON = 0x0b
#byte TMR0 =0x15
#define IS_LEAP(year) (year%4 == 0)
int ticker=0;
int msec_100=0;
int minutes=0;
int hours=0;
int seconds=0;
int days=1;
int month=1;
int year=1;
#INT_TIMER0
void isr_timer0()
{
#asm
nop;
#endasm
set_rtcc(0xff-250+11);//4msec
ticker++;
if(ticker==25) //100msec
{
msec_100++;
ticker=0;
}
if(msec_100==10) //1 sec
{
seconds++;
msec_100=0;
}
if(seconds==60) seconds=0;
}
void main()
{
OPTION_REG=0x00;
//OSCCON=0x3a;
setup_counters(rtcc_internal,rtcc_div_2);
set_rtcc(0xff-250+11);
INTCON=0xa0;
TRISB=0;
setup_wdt(WDT_2S);
while(1)
{
restart_wdt();
if(seconds%2) PORTB=1;
else PORTB=0;
}
}
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Last edited by pkipyy on Sat Dec 21, 2013 7:04 pm; edited 3 times in total |
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Gabriel
Joined: 03 Aug 2009
Posts: 1067
Location: Panama
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| Posted: Sun Dec 15, 2013 8:15 pm |
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I would give user ckielstra some credit since your work is a variation or improvement on his.
Other than that, thanks for sharing.
G.
_________________
CCS PCM 5.078 & CCS PCH 5.093 |
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pkipyy
Joined: 21 Nov 2013
Posts: 25
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| I did coding myself!! |
| Posted: Wed Dec 18, 2013 2:43 am |
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I copied only part of year,month,day.
It is similar whoever did.
I revised my own code.
Now I deleted part of day,year,month.
What is variation?
Worth of this code is Only knowing man can see.
How correct time! |
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