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rtc_api.c
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rtc_api.c
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/* mbed Microcontroller Library
* Copyright (c) 2006-2013 ARM Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "rtc_api.h"
#if DEVICE_RTC
#include "pinmap.h"
#include "fsl_rtc.h"
#include "PeripheralPins.h"
extern void rtc_setup_oscillator(void);
void rtc_init(void)
{
rtc_setup_oscillator();
RTC_Init(RTC);
RTC_StartTimer(RTC);
}
void rtc_free(void)
{
RTC_Deinit(RTC);
}
/*
* Little check routine to see if the RTC has been enabled
* 0 = Disabled, 1 = Enabled
*/
int rtc_isenabled(void)
{
CLOCK_EnableClock(kCLOCK_Rtc);
return (int)((RTC->CTRL & RTC_CTRL_RTC_EN_MASK) >> RTC_CTRL_RTC_EN_SHIFT);
}
time_t rtc_read(void)
{
return (time_t)RTC->COUNT;
}
void rtc_write(time_t t)
{
RTC_StopTimer(RTC);
RTC->COUNT = t;
RTC_StartTimer(RTC);
}
#endif