Lee Kai Xuan / mbed-os

mbed-os

Fork of mbed-os by erkin yucel

platform/mbed_rtc_time.cpp@0:f269e3021894, 2016-10-23 (annotated)

Committer:
elessair
Date:
Sun Oct 23 15:10:02 2016 +0000
Revision:
0:f269e3021894
Initial commit

Who changed what in which revision?

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elessair 0:f269e3021894 1 /* mbed Microcontroller Library
elessair 0:f269e3021894 2 * Copyright (c) 2006-2013 ARM Limited
elessair 0:f269e3021894 3 *
elessair 0:f269e3021894 4 * Licensed under the Apache License, Version 2.0 (the "License");
elessair 0:f269e3021894 5 * you may not use this file except in compliance with the License.
elessair 0:f269e3021894 6 * You may obtain a copy of the License at
elessair 0:f269e3021894 7 *
elessair 0:f269e3021894 8 * http://www.apache.org/licenses/LICENSE-2.0
elessair 0:f269e3021894 9 *
elessair 0:f269e3021894 10 * Unless required by applicable law or agreed to in writing, software
elessair 0:f269e3021894 11 * distributed under the License is distributed on an "AS IS" BASIS,
elessair 0:f269e3021894 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
elessair 0:f269e3021894 13 * See the License for the specific language governing permissions and
elessair 0:f269e3021894 14 * limitations under the License.
elessair 0:f269e3021894 15 */
elessair 0:f269e3021894 16 #include "hal/rtc_api.h"
elessair 0:f269e3021894 17
elessair 0:f269e3021894 18 #include <time.h>
elessair 0:f269e3021894 19 #include "platform/critical.h"
elessair 0:f269e3021894 20 #include "platform/rtc_time.h"
elessair 0:f269e3021894 21 #include "hal/us_ticker_api.h"
elessair 0:f269e3021894 22 #include "platform/SingletonPtr.h"
elessair 0:f269e3021894 23 #include "platform/PlatformMutex.h"
elessair 0:f269e3021894 24
elessair 0:f269e3021894 25 static SingletonPtr<PlatformMutex> _mutex;
elessair 0:f269e3021894 26
elessair 0:f269e3021894 27 #if DEVICE_RTC
elessair 0:f269e3021894 28 static void (*_rtc_init)(void) = rtc_init;
elessair 0:f269e3021894 29 static int (*_rtc_isenabled)(void) = rtc_isenabled;
elessair 0:f269e3021894 30 static time_t (*_rtc_read)(void) = rtc_read;
elessair 0:f269e3021894 31 static void (*_rtc_write)(time_t t) = rtc_write;
elessair 0:f269e3021894 32 #else
elessair 0:f269e3021894 33 static void (*_rtc_init)(void) = NULL;
elessair 0:f269e3021894 34 static int (*_rtc_isenabled)(void) = NULL;
elessair 0:f269e3021894 35 static time_t (*_rtc_read)(void) = NULL;
elessair 0:f269e3021894 36 static void (*_rtc_write)(time_t t) = NULL;
elessair 0:f269e3021894 37 #endif
elessair 0:f269e3021894 38
elessair 0:f269e3021894 39 #ifdef __cplusplus
elessair 0:f269e3021894 40 extern "C" {
elessair 0:f269e3021894 41 #endif
elessair 0:f269e3021894 42 #if defined (__ICCARM__)
elessair 0:f269e3021894 43 time_t __time32(time_t *timer)
elessair 0:f269e3021894 44 #else
elessair 0:f269e3021894 45 time_t time(time_t *timer)
elessair 0:f269e3021894 46 #endif
elessair 0:f269e3021894 47
elessair 0:f269e3021894 48 {
elessair 0:f269e3021894 49 _mutex->lock();
elessair 0:f269e3021894 50 if (_rtc_isenabled != NULL) {
elessair 0:f269e3021894 51 if (!(_rtc_isenabled())) {
elessair 0:f269e3021894 52 set_time(0);
elessair 0:f269e3021894 53 }
elessair 0:f269e3021894 54 }
elessair 0:f269e3021894 55
elessair 0:f269e3021894 56 time_t t = 0;
elessair 0:f269e3021894 57 if (_rtc_read != NULL) {
elessair 0:f269e3021894 58 t = _rtc_read();
elessair 0:f269e3021894 59 }
elessair 0:f269e3021894 60
elessair 0:f269e3021894 61 if (timer != NULL) {
elessair 0:f269e3021894 62 *timer = t;
elessair 0:f269e3021894 63 }
elessair 0:f269e3021894 64 _mutex->unlock();
elessair 0:f269e3021894 65 return t;
elessair 0:f269e3021894 66 }
elessair 0:f269e3021894 67
elessair 0:f269e3021894 68 void set_time(time_t t) {
elessair 0:f269e3021894 69 _mutex->lock();
elessair 0:f269e3021894 70 if (_rtc_init != NULL) {
elessair 0:f269e3021894 71 _rtc_init();
elessair 0:f269e3021894 72 }
elessair 0:f269e3021894 73 if (_rtc_write != NULL) {
elessair 0:f269e3021894 74 _rtc_write(t);
elessair 0:f269e3021894 75 }
elessair 0:f269e3021894 76 _mutex->unlock();
elessair 0:f269e3021894 77 }
elessair 0:f269e3021894 78
elessair 0:f269e3021894 79 clock_t clock() {
elessair 0:f269e3021894 80 _mutex->lock();
elessair 0:f269e3021894 81 clock_t t = us_ticker_read();
elessair 0:f269e3021894 82 t /= 1000000 / CLOCKS_PER_SEC; // convert to processor time
elessair 0:f269e3021894 83 _mutex->unlock();
elessair 0:f269e3021894 84 return t;
elessair 0:f269e3021894 85 }
elessair 0:f269e3021894 86
elessair 0:f269e3021894 87 void attach_rtc(time_t (*read_rtc)(void), void (*write_rtc)(time_t), void (*init_rtc)(void), int (*isenabled_rtc)(void)) {
elessair 0:f269e3021894 88 _mutex->lock();
elessair 0:f269e3021894 89 _rtc_read = read_rtc;
elessair 0:f269e3021894 90 _rtc_write = write_rtc;
elessair 0:f269e3021894 91 _rtc_init = init_rtc;
elessair 0:f269e3021894 92 _rtc_isenabled = isenabled_rtc;
elessair 0:f269e3021894 93 _mutex->unlock();
elessair 0:f269e3021894 94 }
elessair 0:f269e3021894 95
elessair 0:f269e3021894 96
elessair 0:f269e3021894 97
elessair 0:f269e3021894 98 #ifdef __cplusplus
elessair 0:f269e3021894 99 }
elessair 0:f269e3021894 100 #endif