Initial commit
Diff: mbed-dev-master/platform/mbed_rtc_time.cpp
- Revision:
- 0:bb348c97df44
diff -r 000000000000 -r bb348c97df44 mbed-dev-master/platform/mbed_rtc_time.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-dev-master/platform/mbed_rtc_time.cpp Wed Sep 16 01:11:49 2020 +0000 @@ -0,0 +1,129 @@ +/* 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 "hal/rtc_api.h" + +#include "platform/mbed_critical.h" +#include "platform/mbed_rtc_time.h" +#include "platform/SingletonPtr.h" +#include "platform/PlatformMutex.h" + +static SingletonPtr<PlatformMutex> _mutex; + +#if DEVICE_RTC + +static void (*_rtc_init)(void) = rtc_init; +static int (*_rtc_isenabled)(void) = rtc_isenabled; +static time_t (*_rtc_read)(void) = rtc_read; +static void (*_rtc_write)(time_t t) = rtc_write; + +#elif DEVICE_LPTICKER + +#include "drivers/LowPowerTimer.h" + +static SingletonPtr<mbed::LowPowerTimer> _rtc_lp_timer; +static uint64_t _rtc_lp_base; +static bool _rtc_enabled; + +static void _rtc_lpticker_init(void) +{ + _rtc_lp_timer->start(); + _rtc_enabled = true; +} + +static int _rtc_lpticker_isenabled(void) +{ + return (_rtc_enabled == true); +} + +static time_t _rtc_lpticker_read(void) +{ + return (uint64_t)_rtc_lp_timer->read() + _rtc_lp_base; +} + +static void _rtc_lpticker_write(time_t t) +{ + _rtc_lp_base = t; +} + +static void (*_rtc_init)(void) = _rtc_lpticker_init; +static int (*_rtc_isenabled)(void) = _rtc_lpticker_isenabled; +static time_t (*_rtc_read)(void) = _rtc_lpticker_read; +static void (*_rtc_write)(time_t t) = _rtc_lpticker_write; + +#else /* DEVICE_LPTICKER */ + +static void (*_rtc_init)(void) = NULL; +static int (*_rtc_isenabled)(void) = NULL; +static time_t (*_rtc_read)(void) = NULL; +static void (*_rtc_write)(time_t t) = NULL; +#endif /* DEVICE_LPTICKER */ + +#ifdef __cplusplus +extern "C" { +#endif +#if defined (__ICCARM__) +time_t __time32(time_t *timer) +#else +time_t time(time_t *timer) +#endif + +{ + _mutex->lock(); + if (_rtc_isenabled != NULL) { + if (!(_rtc_isenabled())) { + set_time(0); + } + } + + time_t t = (time_t) -1; + if (_rtc_read != NULL) { + t = _rtc_read(); + } + + if (timer != NULL) { + *timer = t; + } + _mutex->unlock(); + return t; +} + +void set_time(time_t t) +{ + _mutex->lock(); + if (_rtc_init != NULL) { + _rtc_init(); + } + if (_rtc_write != NULL) { + _rtc_write(t); + } + _mutex->unlock(); +} + +void attach_rtc(time_t (*read_rtc)(void), void (*write_rtc)(time_t), void (*init_rtc)(void), int (*isenabled_rtc)(void)) +{ + _mutex->lock(); + _rtc_read = read_rtc; + _rtc_write = write_rtc; + _rtc_init = init_rtc; + _rtc_isenabled = isenabled_rtc; + _mutex->unlock(); +} + + + +#ifdef __cplusplus +} +#endif