[270] | 1 | /* mbed Microcontroller Library
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| 2 | * Copyright (c) 2006-2013 ARM Limited
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| 3 | *
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 5 | * you may not use this file except in compliance with the License.
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| 6 | * You may obtain a copy of the License at
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| 7 | *
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0
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| 9 | *
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| 10 | * Unless required by applicable law or agreed to in writing, software
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 13 | * See the License for the specific language governing permissions and
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| 14 | * limitations under the License.
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| 15 | */
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| 16 | #include "rtc_api.h"
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| 17 |
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| 18 | #include <time.h>
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| 19 | #include "rtc_time.h"
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| 20 | #include "us_ticker_api.h"
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| 21 |
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| 22 | #if DEVICE_RTC
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| 23 | static void (*_rtc_init)(void) = rtc_init;
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| 24 | static int (*_rtc_isenabled)(void) = rtc_isenabled;
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| 25 | static time_t (*_rtc_read)(void) = rtc_read;
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| 26 | static void (*_rtc_write)(time_t t) = rtc_write;
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| 27 | #else
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| 28 | static void (*_rtc_init)(void) = NULL;
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| 29 | static int (*_rtc_isenabled)(void) = NULL;
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| 30 | static time_t (*_rtc_read)(void) = NULL;
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| 31 | static void (*_rtc_write)(time_t t) = NULL;
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| 32 | #endif
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| 33 |
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| 34 | #ifdef __cplusplus
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| 35 | extern "C" {
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| 36 | #endif
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| 37 | #if defined (__ICCARM__)
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| 38 | time_t __time32(time_t *timer)
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| 39 | #else
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| 40 | time_t time(time_t *timer)
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| 41 | #endif
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| 42 |
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| 43 | {
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| 44 | if (_rtc_isenabled != NULL) {
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| 45 | if (!(_rtc_isenabled())) {
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| 46 | set_time(0);
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| 47 | }
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| 48 | }
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| 49 |
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| 50 | time_t t = 0;
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| 51 | if (_rtc_read != NULL) {
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| 52 | t = _rtc_read();
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| 53 | }
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| 54 |
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| 55 | if (timer != NULL) {
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| 56 | *timer = t;
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| 57 | }
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| 58 | return t;
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| 59 | }
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| 60 |
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| 61 | void set_time(time_t t) {
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| 62 | if (_rtc_init != NULL) {
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| 63 | _rtc_init();
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| 64 | }
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| 65 | if (_rtc_write != NULL) {
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| 66 | _rtc_write(t);
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| 67 | }
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| 68 | }
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| 69 |
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| 70 | clock_t clock() {
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| 71 | clock_t t = us_ticker_read();
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| 72 | t /= 1000000 / CLOCKS_PER_SEC; // convert to processor time
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| 73 | return t;
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| 74 | }
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| 75 |
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| 76 | void attach_rtc(time_t (*read_rtc)(void), void (*write_rtc)(time_t), void (*init_rtc)(void), int (*isenabled_rtc)(void)) {
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| 77 | __disable_irq();
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| 78 | _rtc_read = read_rtc;
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| 79 | _rtc_write = write_rtc;
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| 80 | _rtc_init = init_rtc;
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| 81 | _rtc_isenabled = isenabled_rtc;
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| 82 | __enable_irq();
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| 83 | }
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| 84 |
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| 85 |
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| 86 |
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| 87 | #ifdef __cplusplus
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| 88 | }
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| 89 | #endif
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