mirror of https://github.com/ARMmbed/mbed-os.git
72 lines
1.5 KiB
C
72 lines
1.5 KiB
C
/* mbed Microcontroller Library
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* Copyright (c) 2013-2016 Realtek Semiconductor Corp.
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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
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#include <time.h>
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#include "timer_api.h" // software-RTC: use a g-timer for the tick of the RTC
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#include "mbed_mktime.h"
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#define SW_RTC_TIMER_ID TIMER4
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static gtimer_t sw_rtc;
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static int sw_rtc_en=0;
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static time_t rtc_time;
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void sw_rtc_tick_handler(uint32_t id)
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{
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rtc_time++;
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}
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void rtc_init(void)
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{
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// Initial a periodical timer
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gtimer_init(&sw_rtc, SW_RTC_TIMER_ID);
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// Tick every 1 sec
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gtimer_start_periodical(&sw_rtc, 1000000, (void*)sw_rtc_tick_handler, (uint32_t)&sw_rtc);
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sw_rtc_en = 1;
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}
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void rtc_free(void)
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{
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sw_rtc_en = 0;
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gtimer_stop(&sw_rtc);
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gtimer_deinit(&sw_rtc);
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}
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int rtc_isenabled(void)
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{
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return(sw_rtc_en);
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}
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time_t rtc_read(void)
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{
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return rtc_time;
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}
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void rtc_write(time_t t)
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{
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gtimer_stop(&sw_rtc);
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// Set the RTC
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rtc_time = t;
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gtimer_start(&sw_rtc);
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}
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#endif // endof "#if DEVICE_RTC"
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