477 lines
16 KiB
C
477 lines
16 KiB
C
/** @addtogroup rtc_defines
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* @author @htmlonly © @endhtmlonly 2012 Karl Palsson <karlp@tweak.net.au>
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*
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* @brief This covers the "version 2" RTC peripheral.
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*
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* This is completely different
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* to the v1 RTC periph on the F1 series devices. It has BCD counters, with
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* automatic leapyear corrections and daylight savings support.
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* This peripheral is used on the F0, F2, F3, F4 and L1 devices, though some
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* only support a subset.
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*/
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/*
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* This file is part of the libopencm3 project.
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*
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* Copyright (C) 2012 Karl Palsson <karlp@tweak.net.au>
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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/* THIS FILE SHOULD NOT BE INCLUDED DIRECTLY, BUT ONLY VIA RTC.H
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The order of header inclusion is important. rtc.h includes the device
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specific memorymap.h header before including this header file.*/
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/** @cond */
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#ifdef LIBOPENCM3_RTC_H
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/** @endcond */
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#ifndef LIBOPENCM3_RTC2_H
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#define LIBOPENCM3_RTC2_H
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/**@{*/
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/** @defgroup rtc_registers RTC Registers
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* @ingroup rtc_defines
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* @brief Real Time Clock registers
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@{*/
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/** RTC time register (RTC_TR) */
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#define RTC_TR MMIO32(RTC_BASE + 0x00)
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/** RTC date register (RTC_DR) */
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#define RTC_DR MMIO32(RTC_BASE + 0x04)
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/** RTC control register (RTC_CR) */
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#define RTC_CR MMIO32(RTC_BASE + 0x08)
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/** RTC initialization and status register (RTC_ISR) */
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#define RTC_ISR MMIO32(RTC_BASE + 0x0c)
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/** RTC prescaler register (RTC_PRER) */
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#define RTC_PRER MMIO32(RTC_BASE + 0x10)
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/** RTC wakeup timer register (RTC_WUTR) */
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#define RTC_WUTR MMIO32(RTC_BASE + 0x14)
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/** RTC calibration register (RTC_CALIBR) NB: see also RTC_CALR */
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#define RTC_CALIBR MMIO32(RTC_BASE + 0x18)
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/** RTC alarm X register (RTC_ALRMxR) */
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#define RTC_ALRMAR MMIO32(RTC_BASE + 0x1c)
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#define RTC_ALRMBR MMIO32(RTC_BASE + 0x20)
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/** RTC write protection register (RTC_WPR)*/
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#define RTC_WPR MMIO32(RTC_BASE + 0x24)
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/** RTC sub second register (RTC_SSR) (high and med+ only) */
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#define RTC_SSR MMIO32(RTC_BASE + 0x28)
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/** RTC shift control register (RTC_SHIFTR) (high and med+ only) */
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#define RTC_SHIFTR MMIO32(RTC_BASE + 0x2c)
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/** RTC time stamp time register (RTC_TSTR) */
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#define RTC_TSTR MMIO32(RTC_BASE + 0x30)
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/** RTC time stamp date register (RTC_TSDR) */
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#define RTC_TSDR MMIO32(RTC_BASE + 0x34)
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/** RTC timestamp sub second register (RTC_TSSSR) (high and med+ only) */
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#define RTC_TSSSR MMIO32(RTC_BASE + 0x38)
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/** RTC calibration register (RTC_CALR) (high and med+ only) */
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#define RTC_CALR MMIO32(RTC_BASE + 0x3c)
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/** RTC tamper and alternate function configuration register (RTC_TAFCR) */
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#define RTC_TAFCR MMIO32(RTC_BASE + 0x40)
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/** RTC alarm X sub second register (RTC_ALRMxSSR) (high and med+ only) */
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#define RTC_ALRMASSR MMIO32(RTC_BASE + 0x44)
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#define RTC_ALRMBSSR MMIO32(RTC_BASE + 0x48)
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#define RTC_BKP_BASE (RTC_BASE + 0x50)
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/** RTC backup registers (RTC_BKPxR) */
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#define RTC_BKPXR(reg) MMIO32(RTC_BKP_BASE + (4 * (reg)))
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/**@}*/
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/** @defgroup rtc_tr_values RTC Time register (RTC_TR) values
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* @ingroup rtc_registers
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* Note: Bits [31:23], 15, and 7 are reserved, and must be kept at reset value.
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@{*/
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/** AM/PM notation */
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#define RTC_TR_PM (1 << 22)
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/** Hour tens in BCD format shift */
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#define RTC_TR_HT_SHIFT (20)
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/** Hour tens in BCD format mask */
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#define RTC_TR_HT_MASK (0x3)
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/** Hour units in BCD format shift */
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#define RTC_TR_HU_SHIFT (16)
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/** Hour units in BCD format mask */
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#define RTC_TR_HU_MASK (0xf)
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/** Minute tens in BCD format shift */
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#define RTC_TR_MNT_SHIFT (12)
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/** Minute tens in BCD format mask */
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#define RTC_TR_MNT_MASK (0x7)
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/** Minute units in BCD format shift */
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#define RTC_TR_MNU_SHIFT (8)
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/** Minute units in BCD format mask */
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#define RTC_TR_MNU_MASK (0xf)
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/** Second tens in BCD format shift */
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#define RTC_TR_ST_SHIFT (4)
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/** Second tens in BCD format mask */
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#define RTC_TR_ST_MASK (0x7)
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/** Second units in BCD format shift */
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#define RTC_TR_SU_SHIFT (0)
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/** Second units in BCD format mask */
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#define RTC_TR_SU_MASK (0xf)
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/**@}*/
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/** @defgroup rtc_dr_values RTC Date register (RTC_DR) values
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* @ingroup rtc_registers
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* Note: Bits [31:24] and [7:6] are reserved, and must be kept at reset value.
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@{*/
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/** Year tens in BCD format shift */
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#define RTC_DR_YT_SHIFT (20)
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/** Year tens in BCD format mask */
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#define RTC_DR_YT_MASK (0xf)
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/** Year units in BCD format shift */
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#define RTC_DR_YU_SHIFT (16)
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/** Year units in BCD format mask */
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#define RTC_DR_YU_MASK (0xf)
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/** Weekday units shift */
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#define RTC_DR_WDU_SHIFT (13)
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/** Weekday units mask */
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#define RTC_DR_WDU_MASK (0x7)
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/** Month tens in BCD format shift */
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#define RTC_DR_MT_SHIFT (12)
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/** Month tens in BCD format mask */
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#define RTC_DR_MT_MASK (1)
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/** Month units in BCD format shift */
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#define RTC_DR_MU_SHIFT (8)
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/** Month units in BCD format mask */
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#define RTC_DR_MU_MASK (0xf)
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/** Date tens in BCD format shift */
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#define RTC_DR_DT_SHIFT (4)
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/** Date tens in BCD format mask */
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#define RTC_DR_DT_MASK (0x3)
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/** Date units in BCD format shift */
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#define RTC_DR_DU_SHIFT (0)
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/** Date units in BCD format mask */
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#define RTC_DR_DU_MASK (0xf)
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/**@}*/
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/** @defgroup rtc_cr_values RTC control register (RTC_CR) values
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* @ingroup rtc_registers
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* Note: Bits [31:24] are reserved, and must be kept at reset value.
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* Note: Bits 7, 6 and 4 of this register can be written in initialization mode
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* only (RTC_ISR/INITF = 1).
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@{*/
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/* Note: Bits 2 to 0 of this register can be written only when RTC_CR WUTE bit
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* = 0 and RTC_ISR WUTWF bit = 1.
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*/
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/** Calibration output enable */
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#define RTC_CR_COE (1<<23)
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#define RTC_CR_OSEL_SHIFT 21
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#define RTC_CR_OSEL_MASK (0x3)
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/** @defgroup rtc_cr_osel RTC_CR_OSEL: Output selection values
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* @ingroup rtc_cr_values
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* These bits are used to select the flag to be routed to AFO_ALARM RTC output
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@{*/
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#define RTC_CR_OSEL_DISABLED (0x0)
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#define RTC_CR_OSEL_ALARMA (0x1)
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#define RTC_CR_OSEL_ALARMB (0x2)
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#define RTC_CR_OSEL_WAKEUP (0x3)
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/**@}*/
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/** Output polarity */
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#define RTC_CR_POL (1<<20)
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/** Calibration output selection */
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#define RTC_CR_COSEL (1<<19)
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/** Backup */
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#define RTC_CR_BKP (1<<18)
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/** Subtract 1 hour (winter time change) */
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#define RTC_CR_SUB1H (1<<17)
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/** Add 1 hour (summer time change) */
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#define RTC_CR_ADD1H (1<<16)
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/** Timestamp interrupt enable */
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#define RTC_CR_TSIE (1<<15)
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/** Wakeup timer interrupt enable */
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#define RTC_CR_WUTIE (1<<14)
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/** Alarm B interrupt enable */
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#define RTC_CR_ALRBIE (1<<13)
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/** Alarm A interrupt enable */
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#define RTC_CR_ALRAIE (1<<12)
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/** Time stamp enable */
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#define RTC_CR_TSE (1<<11)
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/** Wakeup timer enable */
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#define RTC_CR_WUTE (1<<10)
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/** Alarm B enable */
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#define RTC_CR_ALRBE (1<<9)
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/** Alarm A enable */
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#define RTC_CR_ALRAE (1<<8)
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/** Course digital calibration enable */
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#define RTC_CR_DCE (1<<7)
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/** Hour format */
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#define RTC_CR_FMT (1<<6)
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/** Bypass the shadow registers */
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#define RTC_CR_BYPSHAD (1<<5)
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/** Reference clock detection enable */
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#define RTC_CR_REFCKON (1<<4)
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/** Timestamp event active edge */
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#define RTC_CR_TSEDGE (1<<3)
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/* RTC_CR_WUCKSEL: Wakeup clock selection */
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#define RTC_CR_WUCLKSEL_SHIFT (0)
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#define RTC_CR_WUCLKSEL_MASK (0x7)
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#define RTC_CR_WUCLKSEL_RTC_DIV16 (0x0)
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#define RTC_CR_WUCLKSEL_RTC_DIV8 (0x1)
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#define RTC_CR_WUCLKSEL_RTC_DIV4 (0x2)
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#define RTC_CR_WUCLKSEL_RTC_DIV2 (0x3)
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#define RTC_CR_WUCLKSEL_SPRE (0x4)
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#define RTC_CR_WUCLKSEL_SPRE_216 (0x6)
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/**@}*/
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/** @defgroup rtc_isr_values RTC initialization and status register (RTC_ISR) values
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* @ingroup rtc_registers
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* Note: Bits [31:17] and [15] are reserved, and must be kept at reset value.
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* Note: This register is write protected (except for RTC_ISR[13:8] bits).
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@{*/
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/** RECALPF: Recalib pending flag */
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#define RTC_ISR_RECALPF (1<<16)
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/** TAMP3F: TAMPER3 detection flag (not on F4)*/
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#define RTC_ISR_TAMP3F (1<<15)
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/** TAMP2F: TAMPER2 detection flag */
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#define RTC_ISR_TAMP2F (1<<14)
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/** TAMP1F: TAMPER detection flag */
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#define RTC_ISR_TAMP1F (1<<13)
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/** TSOVF: Timestamp overflow flag */
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#define RTC_ISR_TSOVF (1<<12)
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/** TSF: Timestamp flag */
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#define RTC_ISR_TSF (1<<11)
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/** WUTF: Wakeup timer flag */
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#define RTC_ISR_WUTF (1<<10)
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/** ALRBF: Alarm B flag */
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#define RTC_ISR_ALRBF (1<<9)
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/** ALRAF: Alarm A flag */
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#define RTC_ISR_ALRAF (1<<8)
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/** INIT: Initialization mode */
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#define RTC_ISR_INIT (1<<7)
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/** INITF: Initialization flag */
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#define RTC_ISR_INITF (1<<6)
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/** RSF: Registers sync flag */
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#define RTC_ISR_RSF (1<<5)
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/** INITS: Init status flag */
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#define RTC_ISR_INITS (1<<4)
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/** SHPF: Shift operation pending */
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#define RTC_ISR_SHPF (1<<3)
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/** WUTWF: Wakeup timer write flag */
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#define RTC_ISR_WUTWF (1<<2)
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/** ALRBWF: Alarm B write flag */
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#define RTC_ISR_ALRBWF (1<<1)
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/** ALRAWF: Alarm A write flag */
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#define RTC_ISR_ALRAWF (1<<0)
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/**@}*/
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/** @defgroup rtc_prer_values RTC prescaler register (RTC_PRER) values
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* @ingroup rtc_registers
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@{*/
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/** Async prescaler factor shift */
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#define RTC_PRER_PREDIV_A_SHIFT (16)
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/** Async prescaler factor mask */
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#define RTC_PRER_PREDIV_A_MASK (0x7f)
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/** Sync prescaler factor shift */
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#define RTC_PRER_PREDIV_S_SHIFT (0)
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/** Sync prescaler factor mask */
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#define RTC_PRER_PREDIV_S_MASK (0x7fff)
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/**@}*/
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/* RTC calibration register (RTC_CALIBR) ------------------------ */
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#define RTC_CALIBR_DCS (1 << 7)
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#define RTC_CALIBR_DC_SHIFT (0)
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#define RTC_CALIBR_DC_MASK (0x1f)
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/** @defgroup rtc_alarm_values RTC Alarm register values
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* @ingroup rtc_registers
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* Applies to RTC_ALRMAR and RTC_ALRMBR
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@{*/
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#define RTC_ALRMXR_MSK4 (1<<31)
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#define RTC_ALRMXR_WDSEL (1<<30)
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#define RTC_ALRMXR_DT_SHIFT (28)
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#define RTC_ALRMXR_DT_MASK (0x3)
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#define RTC_ALRMXR_DU_SHIFT (24)
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#define RTC_ALRMXR_DU_MASK (0xf)
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#define RTC_ALRMXR_MSK3 (1<<23)
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#define RTC_ALRMXR_PM (1<<22)
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#define RTC_ALRMXR_HT_SHIFT (20)
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#define RTC_ALRMXR_HT_MASK (0x3)
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#define RTC_ALRMXR_HU_SHIFT (16)
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#define RTC_ALRMXR_HU_MASK (0xf)
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#define RTC_ALRMXR_MSK2 (1<<15)
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#define RTC_ALRMXR_MNT_SHIFT (12)
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#define RTC_ALRMXR_MNT_MASK (0x7)
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#define RTC_ALRMXR_MNU_SHIFT (8)
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#define RTC_ALRMXR_MNU_MASK (0xf)
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#define RTC_ALRMXR_MSK1 (1<<7)
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#define RTC_ALRMXR_ST_SHIFT (4)
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#define RTC_ALRMXR_ST_MASK (0x7)
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#define RTC_ALRMXR_SU_SHIFT (0)
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#define RTC_ALRMXR_SU_MASK (0xf)
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/**@}*/
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/* RTC shift control register (RTC_SHIFTR) ---------------------- */
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#define RTC_SHIFTR_ADD1S (1<<31)
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#define RTC_SHIFTR_SUBFS_SHIFT (0)
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#define RTC_SHIFTR_SUBFS_MASK (0x7fff)
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/** @defgroup rtc_tstr_values RTC time stamp time register (RTC_TSTR) values
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* @ingroup rtc_registers
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@{*/
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#define RTC_TSTR_PM (1<<22)
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#define RTC_TSTR_HT_SHIFT (20)
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#define RTC_TSTR_HT_MASK (0x3)
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#define RTC_TSTR_HU_SHIFT (16)
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#define RTC_TSTR_HU_MASK (0xf)
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#define RTC_TSTR_MNT_SHIFT (12)
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#define RTC_TSTR_MNT_MASK (0x7)
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#define RTC_TSTR_MNU_SHIFT (8)
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#define RTC_TSTR_MNU_MASK (0xf)
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#define RTC_TSTR_ST_SHIFT (4)
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#define RTC_TSTR_ST_MASK (0x7)
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#define RTC_TSTR_SU_SHIFT (0)
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#define RTC_TSTR_SU_MASK (0xf)
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/**@}*/
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/** @defgroup rtc_tsdr_values RTC time stamp date register (RTC_TSDR) values
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* @ingroup rtc_registers
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@{*/
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#define RTC_TSDR_WDU_SHIFT (13)
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#define RTC_TSDR_WDU_MASK (0x7)
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#define RTC_TSDR_MT (1<<12)
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#define RTC_TSDR_MU_SHIFT (8)
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#define RTC_TSDR_MU_MASK (0xf)
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#define RTC_TSDR_DT_SHIFT (4)
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#define RTC_TSDR_DT_MASK (0x3)
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#define RTC_TSDR_DU_SHIFT (0)
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#define RTC_TSDR_DU_MASK (0xf)
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/**@}*/
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/** @defgroup rtc_calr_values RTC calibration register (RTC_CALR) values
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* @ingroup rtc_registers
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@{*/
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#define RTC_CALR_CALP (1 << 15)
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#define RTC_CALR_CALW8 (1 << 14)
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#define RTC_CALR_CALW16 (1 << 13)
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#define RTC_CALR_CALM_SHIFT (0)
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#define RTC_CALR_CALM_MASK (0x1ff)
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/**@}*/
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/** @defgroup rtc_tafcr_values RTC tamper and alternate function configuration register (RTC_TAFCR) values
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* @ingroup rtc_registers
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@{*/
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#define RTC_TAFCR_ALARMOUTTYPE (1<<18)
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#define RTC_TAFCR_TAMPPUDIS (1<<15)
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#define RTC_TAFCR_TAMPPRCH_SHIFT (13)
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#define RTC_TAFCR_TAMPPRCH_MASK (0x3)
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#define RTC_TAFCR_TAMPPRCH_1RTC (0x0)
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#define RTC_TAFCR_TAMPPRCH_2RTC (0x1)
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#define RTC_TAFCR_TAMPPRCH_4RTC (0x2)
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#define RTC_TAFCR_TAMPPRCH_8RTC (0x3)
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#define RTC_TAFCR_TAMPFLT_SHIFT (11)
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#define RTC_TAFCR_TAMPFLT_MASK (0x3)
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#define RTC_TAFCR_TAMPFLT_EDGE1 (0x0)
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#define RTC_TAFCR_TAMPFLT_EDGE2 (0x1)
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#define RTC_TAFCR_TAMPFLT_EDGE4 (0x2)
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#define RTC_TAFCR_TAMPFLT_EDGE8 (0x3)
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#define RTC_TAFCR_TAMPFREQ_SHIFT (8)
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#define RTC_TAFCR_TAMPFREQ_MASK (0x7)
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#define RTC_TAFCR_TAMPFREQ_RTCDIV32K (0x0)
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#define RTC_TAFCR_TAMPFREQ_RTCDIV16K (0x1)
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#define RTC_TAFCR_TAMPFREQ_RTCDIV8K (0x2)
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#define RTC_TAFCR_TAMPFREQ_RTCDIV4K (0x3)
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#define RTC_TAFCR_TAMPFREQ_RTCDIV2K (0x4)
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#define RTC_TAFCR_TAMPFREQ_RTCDIV1K (0x5)
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#define RTC_TAFCR_TAMPFREQ_RTCDIV512 (0x6)
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#define RTC_TAFCR_TAMPFREQ_RTCDIV256 (0x7)
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#define RTC_TAFCR_TAMPTS (1<<7)
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#define RTC_TAFCR_TAMP3TRG (1<<6)
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#define RTC_TAFCR_TAMP3E (1<<5)
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#define RTC_TAFCR_TAMP2TRG (1<<4)
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#define RTC_TAFCR_TAMP2E (1<<3)
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#define RTC_TAFCR_TAMPIE (1<<2)
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#define RTC_TAFCR_TAMP1TRG (1<<1)
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#define RTC_TAFCR_TAMP1E (1<<0)
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/**@}*/
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/* RTC alarm X sub second register ------------------------------ */
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/* Note: Applies to RTC_ALRMASSR and RTC_ALRMBSSR */
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#define RTC_ALRMXSSR_MASKSS_SHIFT (24)
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#define RTC_ALARXSSR_MASKSS_MASK (0xf)
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#define RTC_ALRMXSSR_SS_SHIFT (0)
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#define RTC_ALARXSSR_SS_MASK (0x7fff)
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enum rtc_weekday {
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RTC_DR_WDU_MON = 0x01,
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RTC_DR_WDU_TUE,
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RTC_DR_WDU_WED,
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RTC_DR_WDU_THU,
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RTC_DR_WDU_FRI,
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RTC_DR_WDU_SAT,
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RTC_DR_WDU_SUN,
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};
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BEGIN_DECLS
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void rtc_set_prescaler(uint32_t sync, uint32_t async);
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void rtc_wait_for_synchro(void);
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void rtc_lock(void);
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void rtc_unlock(void);
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void rtc_set_wakeup_time(uint16_t wkup_time, uint8_t rtc_cr_wucksel);
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void rtc_clear_wakeup_flag(void);
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void rtc_set_init_flag(void);
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void rtc_clear_init_flag(void);
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bool rtc_init_flag_is_ready(void);
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void rtc_wait_for_init_ready(void);
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void rtc_set_bypass_shadow_register(void);
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void rtc_enable_bypass_shadow_register(void);
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void rtc_disable_bypass_shadow_register(void);
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void rtc_set_am_format(void);
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void rtc_set_pm_format(void);
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void rtc_calendar_set_year(uint8_t year);
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void rtc_calendar_set_weekday(enum rtc_weekday rtc_dr_wdu);
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void rtc_calendar_set_month(uint8_t month);
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void rtc_calendar_set_day(uint8_t day);
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void rtc_calendar_set_date(uint8_t year, uint8_t month, uint8_t day, enum rtc_weekday rtc_dr_wdu);
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void rtc_time_set_hour(uint8_t hour, bool use_am_notation);
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void rtc_time_set_minute(uint8_t minute);
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void rtc_time_set_second(uint8_t second);
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void rtc_time_set_time(uint8_t hour, uint8_t minute, uint8_t second, bool use_am_notation);
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END_DECLS
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/**@}*/
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#endif /* RTC2_H */
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/** @cond */
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#else
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#warning "rtc_common_l1f024.h should not be included explicitly, only via rtc.h"
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#endif
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/** @endcond */
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