/* * This file contains the definitions for Dallas Semiconductor * DS1307/DS1308 serial real-time clock/NVRAM. * * Copyright (C) 2000 OKTET Ltd., St.-Petersburg, Russia * Author: Victor V. Vengerov * * The license and distribution terms for this file may be * found in the file LICENSE in this distribution or at * * http://www.rtems.org/license/LICENSE. */ #ifndef __RTC_DS1307__ #define __RTC_DS1307__ #define DS1307_I2C_ADDRESS (0xD0) /* I2C bus address assigned to DS1307 */ #define DS1307_SECOND (0x00) #define DS1307_SECOND_HALT (0x80) /* High bit is a Clock Halt bit */ #define DS1307_MINUTE (0x01) #define DS1307_HOUR (0x02) #define DS1307_HOUR_12 (0x40) /* 12-hour mode */ #define DS1307_HOUR_PM (0x20) /* PM in 12-hour mode */ #define DS1307_DAY_OF_WEEK (0x03) #define DS1307_DAY (0x04) #define DS1307_MONTH (0x05) #define DS1307_YEAR (0x06) #define DS1307_CONTROL (0x07) #define DS1307_CONTROL_OUT (0x80) /* Output control */ #define DS1307_CONTROL_SQWE (0x10) /* Sqware Wave Enable */ #define DS1307_CONTROL_RS_1 (0x00) /* Rate select: 1 Hz */ #define DS1307_CONTROL_RS_4096 (0x01) /* Rate select: 4096 Hz */ #define DS1307_CONTROL_RS_8192 (0x02) /* Rate select: 8192 Hz */ #define DS1307_CONTROL_RS_32768 (0x03) /* Rate select; 32768 Hz */ #define DS1307_NVRAM_START (0x08) /* Start location of non-volatile memory */ #define DS1307_NVRAM_END (0x3F) /* End location of non-volatile memory */ #define DS1307_NVRAM_SIZE (56) /* Size of non-volatile memory */ #endif __RTC_DS1307__