290 lines
20 KiB
C
290 lines
20 KiB
C
/****************************************************************************
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* drivers/timers/ds3231.h
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*
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* Copyright (C) 2015 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __DRIVERS_TIMERS_DS3231_H
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#define __DRIVERS_TIMERS_DS3231_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/compiler.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define DS3XXX_TIME_SECR 0x00 /* Seconds register */
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# define DS3XXX_TIME_SEC_SHIFT 0 /* Bits 0-3: Seconds, range 0-9 */
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# define DS3XXX_TIME_SEC_MASK (15 << DS3XXX_TIME_SEC_SHIFT)
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# define DS3XXX_TIME_SEC(n) ((uint8_t)(n) << DS3XXX_TIME_SEC_SHIFT)
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# define DS3XXX_TIME_10SEC_SHIFT 4 /* Bits 4-6: 10 seconds, range 0-5 */
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# define DS3XXX_TIME_10SEC_MASK (7 << DS3XXX_TIME_10SEC_SHIFT)
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# define DS3XXX_TIME_10SEC(n) ((uint8_t)(n) << DS3XXX_TIME_10SEC_SHIFT)
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# define DS3XXX_TIME_SEC_BCDMASK (DS3XXX_TIME_SEC_MASK | DS3XXX_TIME_10SEC_MASK)
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#define DS3XXX_TIME_MINR 0x01 /* Minutes register */
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# define DS3XXX_TIME_MIN_SHIFT 0 /* Bits 0-3: Minutes, range 0-9 */
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# define DS3XXX_TIME_MIN_MASK (15 << DS3XXX_TIME_MIN_SHIFT)
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# define DS3XXX_TIME_MIN(n) ((uint8_t)(n) << DS3XXX_TIME_MIN_SHIFT)
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# define DS3XXX_TIME_10MIN_SHIFT 4 /* Bits 4-6: 10 minutes, range 0-5 */
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# define DS3XXX_TIME_10MIN_MASK (7 << DS3XXX_TIME_10MIN_SHIFT)
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# define DS3XXX_TIME_10MIN(n) ((uint8_t)(n) << DS3XXX_TIME_10MIN_SHIFT)
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# define DS3XXX_TIME_MIN_BCDMASK (DS3XXX_TIME_MIN_MASK | DS3XXX_TIME_10MIN_MASK)
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#define DS3XXX_TIME_HOURR 0x02 /* Hours register */
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# define DS3XXX_TIME_HOUR_SHIFT 0 /* Bits 0-3: Hours, range 0-9 */
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# define DS3XXX_TIME_HOUR_MASK (15 << DS3XXX_TIME_HOUR_SHIFT)
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# define DS3XXX_TIME_HOUR(n) ((uint8_t)(n) << DS3XXX_TIME_HOUR_SHIFT)
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# define DS3XXX_TIME_10HOUR12_SHIFT 4 /* Bit 4: 10 hours, range 0-1 */
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# define DS3XXX_TIME_10HOUR12_MASK (1 << DS3XXX_TIME_10HOUR12_SHIFT)
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# define DS3XXX_TIME_10HOUR12(n) ((uint8_t)(n) << DS3XXX_TIME_10HOUR12_SHIFT)
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# define DS3XXX_TIME_10HOUR24_SHIFT 4 /* Bits 4-5: 10 hours, range 0-2 */
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# define DS3XXX_TIME_10HOUR24_MASK (3 << DS3XXX_TIME_10HOUR24_SHIFT)
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# define DS3XXX_TIME_10HOUR24(n) ((uint8_t)(n) << DS3XXX_TIME_10HOUR24_SHIFT)
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# define DS3XXX_TIME_HOUR12_BCDMASK (DS3XXX_TIME_HOUR_MASK | DS3XXX_TIME_10HOUR12_MASK)
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# define DS3XXX_TIME_HOUR24_BCDMASK (DS3XXX_TIME_HOUR_MASK | DS3XXX_TIME_10HOUR24_MASK)
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# define DS3XXX_TIME_AMPM_SHIFT 5 /* Bit 5: AM/PM Indication */
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# define DS3XXX_TIME_AMPM_MASK (1 << DS3XXX_TIME_AMPM_SHIFT)
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# define DS3XXX_TIME_AM ((uint8_t)(0) << DS3XXX_TIME_AMPM_SHIFT)
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# define DS3XXX_TIME_PM ((uint8_t)(1) << DS3XXX_TIME_AMPM_SHIFT)
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# define DS3XXX_TIME_1224_SHIFT 6 /* Bit 6: 12/24 Indication */
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# define DS3XXX_TIME_1224_MASK (1 << DS3XXX_TIME_1224_SHIFT)
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# define DS3XXX_TIME_24 ((uint8_t)(0) << DS3XXX_TIME_1224_SHIFT)
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# define DS3XXX_TIME_12 ((uint8_t)(1) << DS3XXX_TIME_1224_SHIFT)
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#define DS3XXX_TIME_DAYR 0x03 /* Day of the week register */
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# define DS3XXX_TIME_DAY_SHIFT 0 /* Bits 0-3: Day of the week, range 1-7 */
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# define DS3XXX_TIME_DAY_MASK (7 << DS3XXX_TIME_DAY_SHIFT)
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# define DS3XXX_TIME_DAY(n) ((uint8_t)(n) << DS3XXX_TIME_DAY_SHIFT)
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#define DS3XXX_TIME_DATER 0x04 /* Date register */
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# define DS3XXX_TIME_DATE_SHIFT 0 /* Bits 0-3: Days, range 0-9 */
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# define DS3XXX_TIME_DATE_MASK (15 << DS3XXX_TIME_DATE_SHIFT)
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# define DS3XXX_TIME_DATE(n) ((uint8_t)(n) << DS3XXX_TIME_DATE_SHIFT)
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# define DS3XXX_TIME_10DATE_SHIFT 4 /* Bits 4-5: 10 days, range 0-5 */
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# define DS3XXX_TIME_10DATE_MASK (3 << DS3XXX_TIME_10DATE_SHIFT)
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# define DS3XXX_TIME_10DATE(n) ((uint8_t)(n) << DS3XXX_TIME_10DATE_SHIFT)
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# define DS3XXX_TIME_DATE_BCDMASK (DS3XXX_TIME_DATE_MASK | DS3XXX_TIME_10DATE_MASK)
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#define DS3XXX_TIME_MONTHR 0x05 /* Month register */
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# define DS3XXX_TIME_MONTH_SHIFT 0 /* Bits 0-3: Month, range 0-9 */
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# define DS3XXX_TIME_MONTH_MASK (15 << DS3XXX_TIME_MONTH_SHIFT)
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# define DS3XXX_TIME_MONTH(n) ((uint8_t)(n) << DS3XXX_TIME_MONTH_SHIFT)
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# define DS3XXX_TIME_10MONTH_SHIFT 4 /* Bit 4: 10 month, range 0-1 */
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# define DS3XXX_TIME_10MONTH_MASK (1 << DS3XXX_TIME_10MONTH_SHIFT)
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# define DS3XXX_TIME_10MONTH(n) ((uint8_t)(n) << DS3XXX_TIME_10MONTH_SHIFT)
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# define DS3XXX_TIME_MONTH_BCDMASK (DS3XXX_TIME_MONTH_MASK | DS3XXX_TIME_10MONTH_MASK)
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# define DS3XXX_TIME_CENTURY_SHIFT 7 /* Bit 7: AM/PM Indication */
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# define DS3XXX_TIME_CENTURY_MASK (1 << DS3XXX_TIME_CENTURY_SHIFT)
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# define DS3XXX_TIME_1900 ((uint8_t)(0) << DS3XXX_TIME_CENTURY_SHIFT)
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# define DS3XXX_TIME_2000 ((uint8_t)(1) << DS3XXX_TIME_CENTURY_SHIFT)
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#define DS3XXX_TIME_YEARR 0x06 /* Date register */
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# define DS3XXX_TIME_YEAR_SHIFT 0 /* Bits 0-3: Year, range 0-9 */
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# define DS3XXX_TIME_YEAR_MASK (15 << DS3XXX_TIME_YEAR_SHIFT)
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# define DS3XXX_TIME_YEAR(n) ((uint8_t)(n) << DS3XXX_TIME_YEAR_SHIFT)
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# define DS3XXX_TIME_10YEAR_SHIFT 4 /* Bits 4-7: 10 year, range 0-9 */
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# define DS3XXX_TIME_10YEAR_MASK (15 << DS3XXX_TIME_10YEAR_SHIFT)
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# define DS3XXX_TIME_10YEAR(n) ((uint8_t)(n) << DS3XXX_TIME_10YEAR_SHIFT)
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# define DS3XXX_TIME_YEAR_BCDMASK (DS3XXX_TIME_YEAR_MASK | DS3XXX_TIME_10YEAR_MASK)
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#ifdef CONFIG_RTC_DS1307
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# define DS1307_CR 0x07 /* Control register */
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# define DS1307_CR_RS_SHIFT (3) /* Bits 0-1: Rate selection */
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# define DS1307_CR_RS_MASK (3 << DS1307_CR_RS_SHIFT)
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# define DS1307_CR_RS_1HZ (0 << DS1307_CR_RS_SHIFT) /* 1Hz */
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# define DS1307_CR_RS_4KHZ (1 << DS1307_CR_RS_SHIFT) /* 4.096kHz */
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# define DS1307_CR_RS_8KHZ (2 << DS1307_CR_RS_SHIFT) /* 8.192kHz */
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# define DS1307_CR_RS_32KHZ (3 << DS1307_CR_RS_SHIFT) /* 32.768kHz */
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# define DS1307_CR_SQWE (1 << 4) /* Bit 4: Square wave enable */
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# define DS1307_CR_OUT (1 << 7) /* Bit 7: Output control */
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# define DS1307_RAM_BASE 0x08 /* 0x08-0x3f: 56x8 RAM */
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#endif
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#ifdef CONFIG_RTC_DS3231
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# define DS3231_ALARM1_SECR 0x07 /* Alarm1 seconds register */
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# define DS3231_ALARM1_SEC_SHIFT 0 /* Bits 0-3: Seconds, range 0-9 */
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# define DS3231_ALARM1_SEC_MASK (15 << DS3231_ALARM1_SEC_SHIFT)
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# define DS3231_ALARM1_SEC(n) ((uint8_t)(n) << DS3231_ALARM1_SEC_SHIFT)
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# define DS3231_ALARM1_10SEC_SHIFT 4 /* Bits 4-6: 10 seconds, range 0-5 */
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# define DS3231_ALARM1_10SEC_MASK (7 << DS3231_ALARM1_10SEC_SHIFT)
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# define DS3231_ALARM1_10SEC(n) ((uint8_t)(n) << DS3231_ALARM1_10SEC_SHIFT)
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# define DS3231_ALARM1_SEC_BCDMASK (DS3231_ALARM1_SEC_MASK | DS3231_ALARM1_10SEC_MASK)
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# define DS3231_ALARM1_A1M1_SHIFT 7 /* Bits 7: A1M1 mask */
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# define DS3231_ALARM1_A1M1_MASK (1 << DS3231_ALARM1_A1M1_SHIFT)
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# define DS3231_ALARM1_A1M1(n) ((uint8_t)(n) << DS3231_ALARM1_A1M1_SHIFT)
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# define DS3231_ALARM1_MINR 0x08 /* Alarm1 minutes register */
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# define DS3231_ALARM1_MIN_SHIFT 0 /* Bits 0-3: Minutes, range 0-9 */
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# define DS3231_ALARM1_MIN_MASK (15 << DS3231_ALARM1_MIN_SHIFT)
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# define DS3231_ALARM1_MIN(n) ((uint8_t)(n) << DS3231_ALARM1_MIN_SHIFT)
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# define DS3231_ALARM1_10MIN_SHIFT 4 /* Bits 4-6: 10 minutes, range 0-5 */
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# define DS3231_ALARM1_10MIN_MASK (7 << DS3231_ALARM1_10MIN_SHIFT)
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# define DS3231_ALARM1_10MIN(n) ((uint8_t)(n) << DS3231_ALARM1_10MIN_SHIFT)
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# define DS3231_ALARM1_MIN_BCDMASK (DS3231_ALARM1_MIN_MASK | DS3231_ALARM1_10MIN_MASK)
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# define DS3231_ALARM1_A1M2_SHIFT 7 /* Bits 7: A1M2 mask */
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# define DS3231_ALARM1_A1M2_MASK (1 << DS3231_ALARM1_A1M2_SHIFT)
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# define DS3231_ALARM1_A1M2(n) ((uint8_t)(n) << DS3231_ALARM1_A1M2_SHIFT)
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# define DS3231_ALARM1_HOURR 0x09 /* Alarm1 hours register */
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# define DS3231_ALARM1_HOUR_SHIFT 0 /* Bits 0-3: Hours, range 0-9 */
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# define DS3231_ALARM1_HOUR_MASK (15 << DS3231_ALARM1_HOUR_SHIFT)
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# define DS3231_ALARM1_HOUR(n) ((uint8_t)(n) << DS3231_ALARM1_HOUR_SHIFT)
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# define DS3231_ALARM1_10HOUR12_SHIFT 4 /* Bit 4: 10 hours, range 0-1 */
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# define DS3231_ALARM1_10HOUR12_MASK (1 << DS3231_ALARM1_10HOUR12_SHIFT)
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# define DS3231_ALARM1_10HOUR12(n) ((uint8_t)(n) << DS3231_ALARM1_10HOUR12_SHIFT)
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# define DS3231_ALARM1_10HOUR24_SHIFT 4 /* Bits 4-5: 10 hours, range 0-2 */
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# define DS3231_ALARM1_10HOUR24_MASK (3 << DS3231_ALARM1_10HOUR24_SHIFT)
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# define DS3231_ALARM1_10HOUR24(n) ((uint8_t)(n) << DS3231_ALARM1_10HOUR24_SHIFT)
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# define DS3231_ALARM1_HOUR12_BCDMASK (DS3231_ALARM1_HOUR_MASK | DS3231_ALARM1_10HOUR12_MASK)
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# define DS3231_ALARM1_HOUR24_BCDMASK (DS3231_ALARM1_HOUR_MASK | DS3231_ALARM1_10HOUR24_MASK)
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# define DS3231_ALARM1_AMPM_SHIFT 5 /* Bit 5: AM/PM Indication */
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# define DS3231_ALARM1_AMPM_MASK (1 << DS3231_ALARM1_AMPM_SHIFT)
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# define DS3231_ALARM1_AM ((uint8_t)(0) << DS3231_ALARM1_AMPM_SHIFT)
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# define DS3231_ALARM1_PM ((uint8_t)(1) << DS3231_ALARM1_AMPM_SHIFT)
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# define DS3231_ALARM1_1224_SHIFT 6 /* Bit 6: 12/24 Indication */
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# define DS3231_ALARM1_1224_MASK (1 << DS3231_ALARM1_1224_SHIFT)
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# define DS3231_ALARM1_12 ((uint8_t)(0) << DS3231_ALARM1_1224_SHIFT)
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# define DS3231_ALARM1_24 ((uint8_t)(1) << DS3231_ALARM1_1224_SHIFT)
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# define DS3231_ALARM1_A1M3_SHIFT 7 /* Bits 7: A1M3 mask */
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# define DS3231_ALARM1_A1M3_MASK (1 << DS3231_ALARM1_A1M3_SHIFT)
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# define DS3231_ALARM1_A1M3(n) ((uint8_t)(n) << DS3231_ALARM1_A1M3_SHIFT)
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# define DS3231_ALARM1_DAYDATER 0x0a /* Alarm1 date / day of the week register */
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# define DS3231_ALARM1_DAY_SHIFT 0 /* Bits 0-3: Day of the week, range 1-7 */
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# define DS3231_ALARM1_DAY_MASK (7 << DS3231_ALARM1_DAY_SHIFT)
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# define DS3231_ALARM1_DAY(n) ((uint8_t)(n) << DS3231_ALARM1_DAY_SHIFT)
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# define DS3231_ALARM1_DATE_SHIFT 0 /* Bits 0-3: Days, range 0-9 */
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# define DS3231_ALARM1_DATE_MASK (15 << DS3231_ALARM1_DATE_SHIFT)
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# define DS3231_ALARM1_DATE(n) ((uint8_t)(n) << DS3231_ALARM1_DATE_SHIFT)
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# define DS3231_ALARM1_10DATE_SHIFT 4 /* Bits 4-5: 10 days, range 0-5 */
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# define DS3231_ALARM1_10DATE_MASK (3 << DS3231_ALARM1_10DATE_SHIFT)
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# define DS3231_ALARM1_10DATE(n) ((uint8_t)(n) << DS3231_ALARM1_10DATE_SHIFT)
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# define DS3231_ALARM1_DATE_BCDMASK (DS3231_ALARM1_DATE_MASK | DS3231_ALARM1_10DATE_MASK)
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# define DS3231_ALARM1_DYDT_SHIFT 6 /* Bits 6: DY/DT */
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# define DS3231_ALARM1_DYDT_MASK (1 << DS3231_ALARM1_DYDT_SHIFT)
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# define DS3231_ALARM1_DYDT_DATE ((uint8_t)(0) << DS3231_ALARM1_DYDT_SHIFT)
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# define DS3231_ALARM1_DYDT_DAY ((uint8_t)(1) << DS3231_ALARM1_DYDT_SHIFT)
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# define DS3231_ALARM1_A1M4_SHIFT 7 /* Bits 7: A1M4 mask */
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# define DS3231_ALARM1_A1M4_MASK (1 << DS3231_ALARM1_A1M4_SHIFT)
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# define DS3231_ALARM1_A1M4(n) ((uint8_t)(n) << DS3231_ALARM1_A1M4_SHIFT)
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# define DS3231_ALARM2_MINR 0x0b /* Alarm2 minutes register */
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# define DS3231_ALARM2_MIN_SHIFT 0 /* Bits 0-3: Minutes, range 0-9 */
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# define DS3231_ALARM2_MIN_MASK (15 << DS3231_ALARM2_MIN_SHIFT)
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# define DS3231_ALARM2_MIN(n) ((uint8_t)(n) << DS3231_ALARM2_MIN_SHIFT)
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# define DS3231_ALARM2_10MIN_SHIFT 4 /* Bits 4-6: 10 minutes, range 0-5 */
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# define DS3231_ALARM2_10MIN_MASK (7 << DS3231_ALARM2_10MIN_SHIFT)
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# define DS3231_ALARM2_10MIN(n) ((uint8_t)(n) << DS3231_ALARM2_10MIN_SHIFT)
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# define DS3231_ALARM2_MIN_BCDMASK (DS3231_ALARM2_MIN_MASK | DS3231_ALARM2_10MIN_MASK)
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# define DS3231_ALARM2_A2M2_SHIFT 7 /* Bits 7: A2M2 mask */
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# define DS3231_ALARM2_A2M2_MASK (1 << DS3231_ALARM2_A2M2_SHIFT)
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# define DS3231_ALARM2_A2M2(n) ((uint8_t)(n) << DS3231_ALARM2_A2M2_SHIFT)
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# define DS3231_ALARM2_HOURR 0x0c /* Alarm2 hours register */
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# define DS3231_ALARM2_HOUR_SHIFT 0 /* Bits 0-3: Hours, range 0-9 */
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# define DS3231_ALARM2_HOUR_MASK (15 << DS3231_ALARM2_HOUR_SHIFT)
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# define DS3231_ALARM2_HOUR(n) ((uint8_t)(n) << DS3231_ALARM2_HOUR_SHIFT)
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# define DS3231_ALARM2_10HOUR12_SHIFT 4 /* Bit 4: 10 hours, range 0-1 */
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# define DS3231_ALARM2_10HOUR12_MASK (1 << DS3231_ALARM2_10HOUR12_SHIFT)
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# define DS3231_ALARM2_10HOUR12(n) ((uint8_t)(n) << DS3231_ALARM2_10HOUR12_SHIFT)
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# define DS3231_ALARM2_10HOUR24_SHIFT 4 /* Bits 4-5: 10 hours, range 0-2 */
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# define DS3231_ALARM2_10HOUR24_MASK (3 << DS3231_ALARM2_10HOUR24_SHIFT)
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# define DS3231_ALARM2_10HOUR24(n) ((uint8_t)(n) << DS3231_ALARM2_10HOUR24_SHIFT)
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# define DS3231_ALARM2_HOUR12_BCDMASK (DS3231_ALARM2_HOUR_MASK | DS3231_ALARM2_10HOUR12_MASK)
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# define DS3231_ALARM2_HOUR24_BCDMASK (DS3231_ALARM2_HOUR_MASK | DS3231_ALARM2_10HOUR24_MASK)
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# define DS3231_ALARM2_AMPM_SHIFT 5 /* Bit 5: AM/PM Indication */
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# define DS3231_ALARM2_AMPM_MASK (1 << DS3231_ALARM2_AMPM_SHIFT)
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# define DS3231_ALARM2_AM ((uint8_t)(0) << DS3231_ALARM2_AMPM_SHIFT)
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# define DS3231_ALARM2_PM ((uint8_t)(1) << DS3231_ALARM2_AMPM_SHIFT)
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# define DS3231_ALARM2_1224_SHIFT 6 /* Bit 6: 12/24 Indication */
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# define DS3231_ALARM2_1224_MASK (1 << DS3231_ALARM2_1224_SHIFT)
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# define DS3231_ALARM2_12 ((uint8_t)(0) << DS3231_ALARM2_1224_SHIFT)
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# define DS3231_ALARM2_24 ((uint8_t)(1) << DS3231_ALARM2_1224_SHIFT)
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# define DS3231_ALARM2_A2M3_SHIFT 7 /* Bits 7: A2M3 mask */
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# define DS3231_ALARM2_A2M3_MASK (1 << DS3231_ALARM2_A2M3_SHIFT)
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# define DS3231_ALARM2_A2M3(n) ((uint8_t)(n) << DS3231_ALARM2_A2M3_SHIFT)
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# define DS3231_ALARM2_DAYDATER 0x0d /* Alarm2 date / day of the week register */
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# define DS3231_ALARM2_DAY_SHIFT 0 /* Bits 0-3: Day of the week, range 1-7 */
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# define DS3231_ALARM2_DAY_MASK (7 << DS3231_ALARM2_DAY_SHIFT)
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# define DS3231_ALARM2_DAY(n) ((uint8_t)(n) << DS3231_ALARM2_DAY_SHIFT)
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# define DS3231_ALARM2_DATE_SHIFT 0 /* Bits 0-3: Days, range 0-9 */
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# define DS3231_ALARM2_DATE_MASK (15 << DS3231_ALARM2_DATE_SHIFT)
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# define DS3231_ALARM2_DATE(n) ((uint8_t)(n) << DS3231_ALARM2_DATE_SHIFT)
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# define DS3231_ALARM2_10DATE_SHIFT 4 /* Bits 4-5: 10 days, range 0-5 */
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# define DS3231_ALARM2_10DATE_MASK (3 << DS3231_ALARM2_10DATE_SHIFT)
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# define DS3231_ALARM2_10DATE(n) ((uint8_t)(n) << DS3231_ALARM2_10DATE_SHIFT)
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# define DS3231_ALARM2_DATE_BCDMASK (DS3231_ALARM2_DATE_MASK | DS3231_ALARM2_10DATE_MASK)
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# define DS3231_ALARM2_DYDT_SHIFT 6 /* Bits 6: DY/DT */
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# define DS3231_ALARM2_DYDT_MASK (1 << DS3231_ALARM2_DYDT_SHIFT)
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# define DS3231_ALARM2_DYDT_DATE ((uint8_t)(0) << DS3231_ALARM2_DYDT_SHIFT)
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# define DS3231_ALARM2_DYDT_DAY ((uint8_t)(1) << DS3231_ALARM2_DYDT_SHIFT)
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# define DS3231_ALARM2_A2M4_SHIFT 7 /* Bits 7: A2M4 mask */
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# define DS3231_ALARM2_A2M4_MASK (1 << DS3231_ALARM2_A2M4_SHIFT)
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# define DS3231_ALARM2_A2M4(n) ((uint8_t)(n) << DS3231_ALARM2_A2M4_SHIFT)
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# define DS3231_CR 0x0e /* Control register */
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# define DS3231_CR_A1IE (1 << 0) /* Bit 0: Alarm 1 interrupt enable */
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# define DS3231_CR_A2IE (1 << 1) /* Bit 1: Alarm 2 interrupt enable */
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# define DS3231_CR_INTCN (1 << 2) /* Bit 2: Interrupt control */
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# define DS3231_CR_RS_SHIFT (3) /* Bits 3-4: Rate selection */
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# define DS3231_CR_RS_MASK (3 << DS3231_CR_RS_SHIFT)
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# define DS3231_CR_RS_1HZ (0 << DS3231_CR_RS_SHIFT) /* 1Hz */
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# define DS3231_CR_RS_1KHZ (1 << DS3231_CR_RS_SHIFT) /* 1.024kHz */
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# define DS3231_CR_RS_4KHZ (2 << DS3231_CR_RS_SHIFT) /* 4.096kHz */
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# define DS3231_CR_RS_8KHZ (3 << DS3231_CR_RS_SHIFT) /* 8.192kHz */
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# define DS3231_CR_CONV (1 << 5) /* Bit 5: Convert temperature */
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# define DS3231_CR_BBSQW (1 << 6) /* Bit 6: Battery backed square wave enable */
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# define DS3231_CR_EOSC (1 << 7) /* Bit 7: Enable oscillator */
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# define DS3231_CSR 0x0f /* Control/status register */
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# define DS3231_CSR_A1F (1 << 0) /* Bit 0: Alarm 1 flag */
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# define DS3231_CSR_A2F (1 << 1) /* Bit 1: Alarm 2 flag */
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# define DS3231_CSR_BSY (1 << 2) /* Bit 2: Busy */
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# define DS3231_CSR_EN32kHz (1 << 3) /* Bit 3: Enable 32kHz output */
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# define DS3231_CSR_OSF (1 << 7) /* Bit 7: Oscillator stop flag */
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# define DS3231_AGINGR 0x10 /* Aging offset register (8-bit, 2's complement) */
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# define DS3231_TMPMR 0x11 /* MSB of temp register (8-bit, 2's complement) */
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# define DS3231_TMPLR 0x12 /* LSB of temp register (2-bits) */
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# define DS3231_TMPLR_MASK 0xc0 /* Bits 6-7: LSB of temp register (2-bits) */
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#endif
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#endif /* __DRIVERS_TIMERS_DS3231_H */
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