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RTC 1307 Library

Rating:

10

Author: Richard Lowe

Last Updated: 2013-09-19

Package Version: 1.0.0.0

Category: Timers (Real time clock)

Downloaded: 2189 times

Not followed.

License: MIT license  

Makes easy addition of ds1307 RTC.

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Download All [13.84KB]

DOWNLOAD LINK RELATED COMPILER CONTAINS
1379602083_rtc_1307_library_mikroc_avr.mpkg [66.66KB] mikroC PRO for AVR
  • lib
  • src
  • exa
  • hlp
  • hex
  • sch
  • pcb
  • doc

Library Blog

Currently only for AVR but ARM coming soon.

Requires: Boolean support found on libstock

Easy access to all RTC functions including RAM read / write as well as RTC output.  Has "daylight savings time" support.  This is the current law for dst, but future revisions will allow for a custom dst if the law were to change.

Several functions exist in this library including GMT HTTP header output for your web server project.

Example:

#include "ds1307.h"
#include <stdbool.h>

#define msg( txt ) UART1_Write_Text( txt )

void main() 
{
   ds1307_config_t rtc;
   rtc.time_zone = -8;
   rtc.dst_enable = TRUE;
   rtc.config = DS1307_SQW_1HZ;
   
   UART1_Init( 38400 );
   Delay_ms( 100 );
   
   ds1307_init( &rtc );
   
   EICRA |= (1<<ISC01) | (1<<ISC00);
   EIMSK |= (1<<INT0);
   SREG_I_bit = 1;
   
}

void rtc_sw_ISR() iv IVT_ADDR_INT0 ics ICS_AUTO {
    msg( ds1307_get_system_time_str() );
    msg( "\r\n" );
}

NOTE* Time is kept in GMT on the hardware.  Local time is supported through "time_zone". 

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