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/* mbed Microcontroller Library
* Copyright (c) 2006-2013 ARM Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "rtc_api.h"
#include <time.h>
#include "rtc_time.h"
#include "us_ticker_api.h"
#if DEVICE_RTC
static void (*_rtc_init)(void) = rtc_init;
static int (*_rtc_isenabled)(void) = rtc_isenabled;
static time_t (*_rtc_read)(void) = rtc_read;
static void (*_rtc_write)(time_t t) = rtc_write;
#else
static void (*_rtc_init)(void) = NULL;
static int (*_rtc_isenabled)(void) = NULL;
static time_t (*_rtc_read)(void) = NULL;
static void (*_rtc_write)(time_t t) = NULL;
#endif
#ifdef __cplusplus
extern "C" {
#endif
#if defined (__ICCARM__)
time_t __time32(time_t *timer)
#else
time_t time(time_t *timer)
#endif
{
if (_rtc_isenabled != NULL) {
if (!(_rtc_isenabled())) {
set_time(0);
}
}
time_t t = 0;
if (_rtc_read != NULL) {
t = _rtc_read();
}
if (timer != NULL) {
*timer = t;
}
return t;
}
void set_time(time_t t) {
if (_rtc_init != NULL) {
_rtc_init();
}
if (_rtc_write != NULL) {
_rtc_write(t);
}
}
clock_t clock() {
clock_t t = us_ticker_read();
t /= 1000000 / CLOCKS_PER_SEC; // convert to processor time
return t;
}
void attach_rtc(time_t (*read_rtc)(void), void (*write_rtc)(time_t), void (*init_rtc)(void), int (*isenabled_rtc)(void)) {
__disable_irq();
_rtc_read = read_rtc;
_rtc_write = write_rtc;
_rtc_init = init_rtc;
_rtc_isenabled = isenabled_rtc;
__enable_irq();
}
#ifdef __cplusplus
}
#endif
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