mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

platform/mbed_rtc_time.cpp@188:bcfe06ba3d64, 2018-11-08 (annotated)

Committer:
AnnaBridge
Date:
Thu Nov 08 11:46:34 2018 +0000
Revision:
188:bcfe06ba3d64
Parent:
187:0387e8f68319
Child:
189:f392fc9709a3
mbed-dev library. Release version 164

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 149:156823d33999 1 /* mbed Microcontroller Library
<> 149:156823d33999 2 * Copyright (c) 2006-2013 ARM Limited
<> 149:156823d33999 3 *
<> 149:156823d33999 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 149:156823d33999 5 * you may not use this file except in compliance with the License.
<> 149:156823d33999 6 * You may obtain a copy of the License at
<> 149:156823d33999 7 *
<> 149:156823d33999 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 149:156823d33999 9 *
<> 149:156823d33999 10 * Unless required by applicable law or agreed to in writing, software
<> 149:156823d33999 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 149:156823d33999 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 149:156823d33999 13 * See the License for the specific language governing permissions and
<> 149:156823d33999 14 * limitations under the License.
<> 149:156823d33999 15 */
<> 149:156823d33999 16 #include "hal/rtc_api.h"
<> 149:156823d33999 17
<> 160:d5399cc887bb 18 #include "platform/mbed_critical.h"
<> 160:d5399cc887bb 19 #include "platform/mbed_rtc_time.h"
<> 149:156823d33999 20 #include "platform/SingletonPtr.h"
<> 149:156823d33999 21 #include "platform/PlatformMutex.h"
<> 149:156823d33999 22
<> 149:156823d33999 23 static SingletonPtr<PlatformMutex> _mutex;
<> 149:156823d33999 24
<> 149:156823d33999 25 #if DEVICE_RTC
Anna Bridge 186:707f6e361f3e 26
<> 149:156823d33999 27 static void (*_rtc_init)(void) = rtc_init;
<> 149:156823d33999 28 static int (*_rtc_isenabled)(void) = rtc_isenabled;
<> 149:156823d33999 29 static time_t (*_rtc_read)(void) = rtc_read;
<> 149:156823d33999 30 static void (*_rtc_write)(time_t t) = rtc_write;
Anna Bridge 186:707f6e361f3e 31
Anna Bridge 186:707f6e361f3e 32 #elif DEVICE_LPTICKER
Anna Bridge 186:707f6e361f3e 33
Anna Bridge 186:707f6e361f3e 34 #include "drivers/LowPowerTimer.h"
Anna Bridge 186:707f6e361f3e 35
AnnaBridge 188:bcfe06ba3d64 36 #define US_PER_SEC 1000000
AnnaBridge 188:bcfe06ba3d64 37
Anna Bridge 186:707f6e361f3e 38 static SingletonPtr<mbed::LowPowerTimer> _rtc_lp_timer;
Anna Bridge 186:707f6e361f3e 39 static uint64_t _rtc_lp_base;
Anna Bridge 186:707f6e361f3e 40 static bool _rtc_enabled;
Anna Bridge 186:707f6e361f3e 41
Anna Bridge 186:707f6e361f3e 42 static void _rtc_lpticker_init(void)
Anna Bridge 186:707f6e361f3e 43 {
Anna Bridge 186:707f6e361f3e 44 _rtc_lp_timer->start();
Anna Bridge 186:707f6e361f3e 45 _rtc_enabled = true;
Anna Bridge 186:707f6e361f3e 46 }
Anna Bridge 186:707f6e361f3e 47
Anna Bridge 186:707f6e361f3e 48 static int _rtc_lpticker_isenabled(void)
Anna Bridge 186:707f6e361f3e 49 {
Anna Bridge 186:707f6e361f3e 50 return (_rtc_enabled == true);
Anna Bridge 186:707f6e361f3e 51 }
Anna Bridge 186:707f6e361f3e 52
Anna Bridge 186:707f6e361f3e 53 static time_t _rtc_lpticker_read(void)
Anna Bridge 186:707f6e361f3e 54 {
AnnaBridge 188:bcfe06ba3d64 55 return _rtc_lp_timer->read_high_resolution_us() / US_PER_SEC + _rtc_lp_base;
Anna Bridge 186:707f6e361f3e 56 }
Anna Bridge 186:707f6e361f3e 57
Anna Bridge 186:707f6e361f3e 58 static void _rtc_lpticker_write(time_t t)
Anna Bridge 186:707f6e361f3e 59 {
Anna Bridge 186:707f6e361f3e 60 _rtc_lp_base = t;
Anna Bridge 186:707f6e361f3e 61 }
Anna Bridge 186:707f6e361f3e 62
Anna Bridge 186:707f6e361f3e 63 static void (*_rtc_init)(void) = _rtc_lpticker_init;
Anna Bridge 186:707f6e361f3e 64 static int (*_rtc_isenabled)(void) = _rtc_lpticker_isenabled;
Anna Bridge 186:707f6e361f3e 65 static time_t (*_rtc_read)(void) = _rtc_lpticker_read;
Anna Bridge 186:707f6e361f3e 66 static void (*_rtc_write)(time_t t) = _rtc_lpticker_write;
Anna Bridge 186:707f6e361f3e 67
Anna Bridge 186:707f6e361f3e 68 #else /* DEVICE_LPTICKER */
Anna Bridge 186:707f6e361f3e 69
<> 149:156823d33999 70 static void (*_rtc_init)(void) = NULL;
<> 149:156823d33999 71 static int (*_rtc_isenabled)(void) = NULL;
<> 149:156823d33999 72 static time_t (*_rtc_read)(void) = NULL;
<> 149:156823d33999 73 static void (*_rtc_write)(time_t t) = NULL;
Anna Bridge 186:707f6e361f3e 74 #endif /* DEVICE_LPTICKER */
<> 149:156823d33999 75
<> 149:156823d33999 76 #ifdef __cplusplus
<> 149:156823d33999 77 extern "C" {
<> 149:156823d33999 78 #endif
<> 149:156823d33999 79 #if defined (__ICCARM__)
<> 149:156823d33999 80 time_t __time32(time_t *timer)
<> 149:156823d33999 81 #else
<> 149:156823d33999 82 time_t time(time_t *timer)
<> 149:156823d33999 83 #endif
<> 149:156823d33999 84
<> 149:156823d33999 85 {
<> 149:156823d33999 86 _mutex->lock();
<> 149:156823d33999 87 if (_rtc_isenabled != NULL) {
<> 149:156823d33999 88 if (!(_rtc_isenabled())) {
<> 149:156823d33999 89 set_time(0);
<> 149:156823d33999 90 }
<> 149:156823d33999 91 }
AnnaBridge 187:0387e8f68319 92
AnnaBridge 187:0387e8f68319 93 time_t t = (time_t) -1;
<> 149:156823d33999 94 if (_rtc_read != NULL) {
<> 149:156823d33999 95 t = _rtc_read();
<> 149:156823d33999 96 }
<> 149:156823d33999 97
<> 149:156823d33999 98 if (timer != NULL) {
<> 149:156823d33999 99 *timer = t;
<> 149:156823d33999 100 }
<> 149:156823d33999 101 _mutex->unlock();
<> 149:156823d33999 102 return t;
<> 149:156823d33999 103 }
<> 149:156823d33999 104
AnnaBridge 187:0387e8f68319 105 void set_time(time_t t)
AnnaBridge 187:0387e8f68319 106 {
<> 149:156823d33999 107 _mutex->lock();
<> 149:156823d33999 108 if (_rtc_init != NULL) {
<> 149:156823d33999 109 _rtc_init();
<> 149:156823d33999 110 }
<> 149:156823d33999 111 if (_rtc_write != NULL) {
<> 149:156823d33999 112 _rtc_write(t);
<> 149:156823d33999 113 }
<> 149:156823d33999 114 _mutex->unlock();
<> 149:156823d33999 115 }
<> 149:156823d33999 116
AnnaBridge 187:0387e8f68319 117 void attach_rtc(time_t (*read_rtc)(void), void (*write_rtc)(time_t), void (*init_rtc)(void), int (*isenabled_rtc)(void))
AnnaBridge 187:0387e8f68319 118 {
<> 149:156823d33999 119 _mutex->lock();
<> 149:156823d33999 120 _rtc_read = read_rtc;
<> 149:156823d33999 121 _rtc_write = write_rtc;
<> 149:156823d33999 122 _rtc_init = init_rtc;
<> 149:156823d33999 123 _rtc_isenabled = isenabled_rtc;
<> 149:156823d33999 124 _mutex->unlock();
<> 149:156823d33999 125 }
<> 149:156823d33999 126
<> 149:156823d33999 127
<> 149:156823d33999 128
<> 149:156823d33999 129 #ifdef __cplusplus
<> 149:156823d33999 130 }
<> 149:156823d33999 131 #endif