ds1307_internal.h
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/*
* Copyright (C) 2017 Freie Universität Berlin
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup drivers_ds1307
* @brief
* @{
*
* @file
* @brief Register definitions for DS1307 RTC
*
* @author Martine Lenders <m.lenders@fu-berlin.de>
*/
#ifndef DS1307_INTERNAL_H
#define DS1307_INTERNAL_H
#ifdef __cplusplus
extern "C" {
#endif
/**
* @name Registers
* @{
*/
#define DS1307_REG_SEC (0x00) /**< seconds */
#define DS1307_REG_MIN (0x01) /**< minutes */
#define DS1307_REG_HOUR (0x02) /**< hours */
#define DS1307_REG_DOW (0x03) /**< day of week (1-7, 1 == sunday) */
#define DS1307_REG_DOM (0x04) /**< day of month */
#define DS1307_REG_MON (0x05) /**< month */
#define DS1307_REG_YEAR (0x06) /**< year */
#define DS1307_REG_SQW_CTL (0x07) /**< SQW control */
#define DS1307_REG_RAM_FIRST (0x08) /**< NVRAM start */
#define DS1307_REG_RAM_LAST (0x3F) /**< NVRAM end */
/** @} */
/**
* @name Register bits
* @{
*/
#define DS1307_REG_SEC_CH (0x80) /**< clock halt bit */
#define DS1307_REG_SEC_MASK (0x7f) /**< seconds mask */
#define DS1307_REG_MIN_MASK (0x7f) /**< minutes mask */
#define DS1307_REG_HOUR_12H (0x40) /**< 12-hour (0) / 24-hour (1) mode */
#define DS1307_REG_HOUR_PM (0x20) /**< AM (0) / PM (1) in 12-hour mode */
#define DS1307_REG_HOUR_12H_MASK (0x2f) /**< hour (12-hour mode) */
#define DS1307_REG_HOUR_24H_MASK (0x3f) /**< hour (24-hour mode) */
#define DS1307_REG_DOW_MASK (0x07) /**< day of week mask */
#define DS1307_REG_DOM_MASK (0x3f) /**< day of month mask */
#define DS1307_REG_MON_MASK (0x1f) /**< month mask */
/** @} */
/**
* @name Custom offsets (to DS1307 registers to struct tm)
* @{
*/
#define DS1307_DOW_OFFSET (1) /**< offset in days from sunday */
#define DS1307_MON_OFFSET (1) /**< offset in month from January */
#define DS1307_YEAR_OFFSET (-100) /**< offset in years from 1900 */
/** @} */
#ifdef __cplusplus
}
#endif
#endif /* DS1307_INTERNAL_H */
/** @} */