Bob Seque / mbed-dev

mbed library sources. Supersedes mbed-src.

Fork of mbed-dev by mbed official

common/rtc_time.c@0:9b334a45a8ff, 2015-10-01 (annotated)

Committer:
bogdanm
Date:
Thu Oct 01 15:25:22 2015 +0300
Revision:
0:9b334a45a8ff
Initial commit on mbed-dev



Replaces mbed-src (now inactive)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /* mbed Microcontroller Library
bogdanm 0:9b334a45a8ff 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 0:9b334a45a8ff 3 *
bogdanm 0:9b334a45a8ff 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 0:9b334a45a8ff 5 * you may not use this file except in compliance with the License.
bogdanm 0:9b334a45a8ff 6 * You may obtain a copy of the License at
bogdanm 0:9b334a45a8ff 7 *
bogdanm 0:9b334a45a8ff 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 0:9b334a45a8ff 9 *
bogdanm 0:9b334a45a8ff 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 0:9b334a45a8ff 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 0:9b334a45a8ff 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 0:9b334a45a8ff 13 * See the License for the specific language governing permissions and
bogdanm 0:9b334a45a8ff 14 * limitations under the License.
bogdanm 0:9b334a45a8ff 15 */
bogdanm 0:9b334a45a8ff 16 #include "rtc_api.h"
bogdanm 0:9b334a45a8ff 17
bogdanm 0:9b334a45a8ff 18 #include <time.h>
bogdanm 0:9b334a45a8ff 19 #include "rtc_time.h"
bogdanm 0:9b334a45a8ff 20 #include "us_ticker_api.h"
bogdanm 0:9b334a45a8ff 21
bogdanm 0:9b334a45a8ff 22 #if DEVICE_RTC
bogdanm 0:9b334a45a8ff 23 static void (*_rtc_init)(void) = rtc_init;
bogdanm 0:9b334a45a8ff 24 static int (*_rtc_isenabled)(void) = rtc_isenabled;
bogdanm 0:9b334a45a8ff 25 static time_t (*_rtc_read)(void) = rtc_read;
bogdanm 0:9b334a45a8ff 26 static void (*_rtc_write)(time_t t) = rtc_write;
bogdanm 0:9b334a45a8ff 27 #else
bogdanm 0:9b334a45a8ff 28 static void (*_rtc_init)(void) = NULL;
bogdanm 0:9b334a45a8ff 29 static int (*_rtc_isenabled)(void) = NULL;
bogdanm 0:9b334a45a8ff 30 static time_t (*_rtc_read)(void) = NULL;
bogdanm 0:9b334a45a8ff 31 static void (*_rtc_write)(time_t t) = NULL;
bogdanm 0:9b334a45a8ff 32 #endif
bogdanm 0:9b334a45a8ff 33
bogdanm 0:9b334a45a8ff 34 #ifdef __cplusplus
bogdanm 0:9b334a45a8ff 35 extern "C" {
bogdanm 0:9b334a45a8ff 36 #endif
bogdanm 0:9b334a45a8ff 37 #if defined (__ICCARM__)
bogdanm 0:9b334a45a8ff 38 time_t __time32(time_t *timer)
bogdanm 0:9b334a45a8ff 39 #else
bogdanm 0:9b334a45a8ff 40 time_t time(time_t *timer)
bogdanm 0:9b334a45a8ff 41 #endif
bogdanm 0:9b334a45a8ff 42
bogdanm 0:9b334a45a8ff 43 {
bogdanm 0:9b334a45a8ff 44 if (_rtc_isenabled != NULL) {
bogdanm 0:9b334a45a8ff 45 if (!(_rtc_isenabled())) {
bogdanm 0:9b334a45a8ff 46 set_time(0);
bogdanm 0:9b334a45a8ff 47 }
bogdanm 0:9b334a45a8ff 48 }
bogdanm 0:9b334a45a8ff 49
bogdanm 0:9b334a45a8ff 50 time_t t = 0;
bogdanm 0:9b334a45a8ff 51 if (_rtc_read != NULL) {
bogdanm 0:9b334a45a8ff 52 t = _rtc_read();
bogdanm 0:9b334a45a8ff 53 }
bogdanm 0:9b334a45a8ff 54
bogdanm 0:9b334a45a8ff 55 if (timer != NULL) {
bogdanm 0:9b334a45a8ff 56 *timer = t;
bogdanm 0:9b334a45a8ff 57 }
bogdanm 0:9b334a45a8ff 58 return t;
bogdanm 0:9b334a45a8ff 59 }
bogdanm 0:9b334a45a8ff 60
bogdanm 0:9b334a45a8ff 61 void set_time(time_t t) {
bogdanm 0:9b334a45a8ff 62 if (_rtc_init != NULL) {
bogdanm 0:9b334a45a8ff 63 _rtc_init();
bogdanm 0:9b334a45a8ff 64 }
bogdanm 0:9b334a45a8ff 65 if (_rtc_write != NULL) {
bogdanm 0:9b334a45a8ff 66 _rtc_write(t);
bogdanm 0:9b334a45a8ff 67 }
bogdanm 0:9b334a45a8ff 68 }
bogdanm 0:9b334a45a8ff 69
bogdanm 0:9b334a45a8ff 70 clock_t clock() {
bogdanm 0:9b334a45a8ff 71 clock_t t = us_ticker_read();
bogdanm 0:9b334a45a8ff 72 t /= 1000000 / CLOCKS_PER_SEC; // convert to processor time
bogdanm 0:9b334a45a8ff 73 return t;
bogdanm 0:9b334a45a8ff 74 }
bogdanm 0:9b334a45a8ff 75
bogdanm 0:9b334a45a8ff 76 void attach_rtc(time_t (*read_rtc)(void), void (*write_rtc)(time_t), void (*init_rtc)(void), int (*isenabled_rtc)(void)) {
bogdanm 0:9b334a45a8ff 77 __disable_irq();
bogdanm 0:9b334a45a8ff 78 _rtc_read = read_rtc;
bogdanm 0:9b334a45a8ff 79 _rtc_write = write_rtc;
bogdanm 0:9b334a45a8ff 80 _rtc_init = init_rtc;
bogdanm 0:9b334a45a8ff 81 _rtc_isenabled = isenabled_rtc;
bogdanm 0:9b334a45a8ff 82 __enable_irq();
bogdanm 0:9b334a45a8ff 83 }
bogdanm 0:9b334a45a8ff 84
bogdanm 0:9b334a45a8ff 85
bogdanm 0:9b334a45a8ff 86
bogdanm 0:9b334a45a8ff 87 #ifdef __cplusplus
bogdanm 0:9b334a45a8ff 88 }
bogdanm 0:9b334a45a8ff 89 #endif