mirror of https://github.com/ARMmbed/mbed-os.git
83 lines
2.0 KiB
C
83 lines
2.0 KiB
C
/* mbed Microcontroller Library
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* Copyright (c) 2006-2013 ARM Limited
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "rtc_api.h"
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#if DEVICE_RTC || DEVICE_LPTICKER
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#include "pinmap.h"
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#include "fsl_rtc.h"
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#include "PeripheralPins.h"
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extern void rtc_setup_oscillator(RTC_Type *base);
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static bool rtc_time_set = false;
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void rtc_init(void)
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{
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rtc_config_t rtcConfig;
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RTC_GetDefaultConfig(&rtcConfig);
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RTC_Init(RTC, &rtcConfig);
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/* Setup the RTC 32KHz oscillator */
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rtc_setup_oscillator(RTC);
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RTC_StartTimer(RTC);
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}
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void rtc_free(void)
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{
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#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
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/* Gate the module clock */
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CLOCK_DisableClock(kCLOCK_Rtc0);
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#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
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}
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/*
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* Little check routine to see if the RTC has been initialized and time has been set
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* 0 = Disabled, 1 = Enabled
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*/
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int rtc_isenabled(void)
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{
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#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
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CLOCK_EnableClock(kCLOCK_Rtc0);
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#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
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const bool rtc_init_done = ((RTC->SR & RTC_SR_TCE_MASK) >> RTC_SR_TCE_SHIFT);
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/* If RTC is not initialized, then disable the clock gate on exit. */
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if(!rtc_init_done) {
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rtc_free();
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}
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return (rtc_init_done & rtc_time_set);
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}
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time_t rtc_read(void)
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{
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return (time_t)RTC->TSR;
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}
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void rtc_write(time_t t)
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{
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RTC_StopTimer(RTC);
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RTC->TSR = t;
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RTC_StartTimer(RTC);
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rtc_time_set = true;
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}
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#endif
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