mirror of https://github.com/ARMmbed/mbed-os.git
96 lines
2.9 KiB
C
96 lines
2.9 KiB
C
/*******************************************************************************
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* Copyright (C) Maxim Integrated Products, Inc., All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
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* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the name of Maxim Integrated
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* Products, Inc. shall not be used except as stated in the Maxim Integrated
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* Products, Inc. Branding Policy.
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*
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* The mere transfer of this software does not imply any licenses
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* of trade secrets, proprietary technology, copyrights, patents,
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* trademarks, maskwork rights, or any other form of intellectual
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* property whatsoever. Maxim Integrated Products, Inc. retains all
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* ownership rights.
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*******************************************************************************
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*/
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#if DEVICE_RTC
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#include <stdio.h>
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#include <string.h>
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#include "rtc_api.h"
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#include "rtc.h"
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#include "mxc_sys.h"
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//******************************************************************************
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void rtc_init(void)
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{
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// Enable clock
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MXC_SYS_RTCClockEnable();
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while(MXC_RTC_Start() == E_BUSY) {
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;
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}
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}
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//******************************************************************************
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void rtc_free(void)
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{
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}
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//******************************************************************************
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int rtc_isenabled(void)
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{
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return ((MXC_RTC->ctrl & MXC_F_RTC_CTRL_EN) >> MXC_F_RTC_CTRL_EN_POS);
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}
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//******************************************************************************
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void rtc_write(time_t t)
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{
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MXC_RTC_Stop();
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MXC_RTC_Init(t, 0);
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while(MXC_RTC_Start() == E_BUSY) {
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;
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}
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}
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//******************************************************************************
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time_t rtc_read(void)
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{
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uint32_t sec = 0;
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uint32_t subsec = 0;
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while (MXC_RTC_GetTime (&sec, &subsec) != 0) {
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;
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}
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subsec &= 0xFFF; //It is 12 bits, 0xFFF = (1<<12)-1
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if (subsec > 2048) {
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sec += 1; // rolover
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}
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return sec;
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}
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#endif // DEVICE_RTC
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