Texas Instruments MSP430 User Manual

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DS1307.h
#include "HW_I2C.h"
#define DS1307_address 0x68
#define sec_reg 0x00
#define min_reg 0x01
#define hr_reg 0x02
#define day_reg 0x03
#define date_reg 0x04
#define month_reg 0x05
#define year_reg 0x06
#define control_reg 0x07
void DS1307_init(void);
unsigned char DS1307_read(unsigned char address);
void DS1307_write(unsigned char address, unsigned char value);
unsigned char bcd_to_decimal(unsigned char value);
unsigned char decimal_to_bcd(unsigned char value);
void get_time(void);
void get_date(void);
void set_time(void);
void set_date(void);
DS1307.c
#include "DS1307.h"
extern struct
{
unsigned char sec;
unsigned char min;
unsigned char hr;
unsigned char day;
unsigned char dt;
unsigned char mt;
unsigned char yr;
}rtc;
void DS1307_init(void)
{
I2C_USCI_init(DS1307_address);
DS1307_write(sec_reg, 0x00);
DS1307_write(control_reg, 0x90);
}
unsigned char DS1307_read(unsigned char address)
{
return I2C_USCI_read_byte(address);
}

Texas Instruments MSP430 Specifications

General

Brand	Texas Instruments
Model	MSP430
Category	Microcontrollers
Language	English