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mbed-dev/platform/mbed_rtc_time.cpp@1:d0dfbce63a89, 2017-02-24 (annotated)

Committer:
elmot
Date:
Fri Feb 24 21:13:56 2017 +0000
Revision:
1:d0dfbce63a89
Ready-to-copy

Who changed what in which revision?

UserRevisionLine numberNew contents of line
elmot 1:d0dfbce63a89 1 /* mbed Microcontroller Library
elmot 1:d0dfbce63a89 2 * Copyright (c) 2006-2013 ARM Limited
elmot 1:d0dfbce63a89 3 *
elmot 1:d0dfbce63a89 4 * Licensed under the Apache License, Version 2.0 (the "License");
elmot 1:d0dfbce63a89 5 * you may not use this file except in compliance with the License.
elmot 1:d0dfbce63a89 6 * You may obtain a copy of the License at
elmot 1:d0dfbce63a89 7 *
elmot 1:d0dfbce63a89 8 * http://www.apache.org/licenses/LICENSE-2.0
elmot 1:d0dfbce63a89 9 *
elmot 1:d0dfbce63a89 10 * Unless required by applicable law or agreed to in writing, software
elmot 1:d0dfbce63a89 11 * distributed under the License is distributed on an "AS IS" BASIS,
elmot 1:d0dfbce63a89 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
elmot 1:d0dfbce63a89 13 * See the License for the specific language governing permissions and
elmot 1:d0dfbce63a89 14 * limitations under the License.
elmot 1:d0dfbce63a89 15 */
elmot 1:d0dfbce63a89 16 #include "hal/rtc_api.h"
elmot 1:d0dfbce63a89 17
elmot 1:d0dfbce63a89 18 #include <time.h>
elmot 1:d0dfbce63a89 19 #include "platform/critical.h"
elmot 1:d0dfbce63a89 20 #include "platform/rtc_time.h"
elmot 1:d0dfbce63a89 21 #include "hal/us_ticker_api.h"
elmot 1:d0dfbce63a89 22 #include "platform/SingletonPtr.h"
elmot 1:d0dfbce63a89 23 #include "platform/PlatformMutex.h"
elmot 1:d0dfbce63a89 24
elmot 1:d0dfbce63a89 25 static SingletonPtr<PlatformMutex> _mutex;
elmot 1:d0dfbce63a89 26
elmot 1:d0dfbce63a89 27 #if DEVICE_RTC
elmot 1:d0dfbce63a89 28 static void (*_rtc_init)(void) = rtc_init;
elmot 1:d0dfbce63a89 29 static int (*_rtc_isenabled)(void) = rtc_isenabled;
elmot 1:d0dfbce63a89 30 static time_t (*_rtc_read)(void) = rtc_read;
elmot 1:d0dfbce63a89 31 static void (*_rtc_write)(time_t t) = rtc_write;
elmot 1:d0dfbce63a89 32 #else
elmot 1:d0dfbce63a89 33 static void (*_rtc_init)(void) = NULL;
elmot 1:d0dfbce63a89 34 static int (*_rtc_isenabled)(void) = NULL;
elmot 1:d0dfbce63a89 35 static time_t (*_rtc_read)(void) = NULL;
elmot 1:d0dfbce63a89 36 static void (*_rtc_write)(time_t t) = NULL;
elmot 1:d0dfbce63a89 37 #endif
elmot 1:d0dfbce63a89 38
elmot 1:d0dfbce63a89 39 #ifdef __cplusplus
elmot 1:d0dfbce63a89 40 extern "C" {
elmot 1:d0dfbce63a89 41 #endif
elmot 1:d0dfbce63a89 42 #if defined (__ICCARM__)
elmot 1:d0dfbce63a89 43 time_t __time32(time_t *timer)
elmot 1:d0dfbce63a89 44 #else
elmot 1:d0dfbce63a89 45 time_t time(time_t *timer)
elmot 1:d0dfbce63a89 46 #endif
elmot 1:d0dfbce63a89 47
elmot 1:d0dfbce63a89 48 {
elmot 1:d0dfbce63a89 49 _mutex->lock();
elmot 1:d0dfbce63a89 50 if (_rtc_isenabled != NULL) {
elmot 1:d0dfbce63a89 51 if (!(_rtc_isenabled())) {
elmot 1:d0dfbce63a89 52 set_time(0);
elmot 1:d0dfbce63a89 53 }
elmot 1:d0dfbce63a89 54 }
elmot 1:d0dfbce63a89 55
elmot 1:d0dfbce63a89 56 time_t t = 0;
elmot 1:d0dfbce63a89 57 if (_rtc_read != NULL) {
elmot 1:d0dfbce63a89 58 t = _rtc_read();
elmot 1:d0dfbce63a89 59 }
elmot 1:d0dfbce63a89 60
elmot 1:d0dfbce63a89 61 if (timer != NULL) {
elmot 1:d0dfbce63a89 62 *timer = t;
elmot 1:d0dfbce63a89 63 }
elmot 1:d0dfbce63a89 64 _mutex->unlock();
elmot 1:d0dfbce63a89 65 return t;
elmot 1:d0dfbce63a89 66 }
elmot 1:d0dfbce63a89 67
elmot 1:d0dfbce63a89 68 void set_time(time_t t) {
elmot 1:d0dfbce63a89 69 _mutex->lock();
elmot 1:d0dfbce63a89 70 if (_rtc_init != NULL) {
elmot 1:d0dfbce63a89 71 _rtc_init();
elmot 1:d0dfbce63a89 72 }
elmot 1:d0dfbce63a89 73 if (_rtc_write != NULL) {
elmot 1:d0dfbce63a89 74 _rtc_write(t);
elmot 1:d0dfbce63a89 75 }
elmot 1:d0dfbce63a89 76 _mutex->unlock();
elmot 1:d0dfbce63a89 77 }
elmot 1:d0dfbce63a89 78
elmot 1:d0dfbce63a89 79 clock_t clock() {
elmot 1:d0dfbce63a89 80 _mutex->lock();
elmot 1:d0dfbce63a89 81 clock_t t = us_ticker_read();
elmot 1:d0dfbce63a89 82 t /= 1000000 / CLOCKS_PER_SEC; // convert to processor time
elmot 1:d0dfbce63a89 83 _mutex->unlock();
elmot 1:d0dfbce63a89 84 return t;
elmot 1:d0dfbce63a89 85 }
elmot 1:d0dfbce63a89 86
elmot 1:d0dfbce63a89 87 void attach_rtc(time_t (*read_rtc)(void), void (*write_rtc)(time_t), void (*init_rtc)(void), int (*isenabled_rtc)(void)) {
elmot 1:d0dfbce63a89 88 _mutex->lock();
elmot 1:d0dfbce63a89 89 _rtc_read = read_rtc;
elmot 1:d0dfbce63a89 90 _rtc_write = write_rtc;
elmot 1:d0dfbce63a89 91 _rtc_init = init_rtc;
elmot 1:d0dfbce63a89 92 _rtc_isenabled = isenabled_rtc;
elmot 1:d0dfbce63a89 93 _mutex->unlock();
elmot 1:d0dfbce63a89 94 }
elmot 1:d0dfbce63a89 95
elmot 1:d0dfbce63a89 96
elmot 1:d0dfbce63a89 97
elmot 1:d0dfbce63a89 98 #ifdef __cplusplus
elmot 1:d0dfbce63a89 99 }
elmot 1:d0dfbce63a89 100 #endif