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Add get/settimeofday retargets #8497

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Merged
merged 1 commit into from
Jan 17, 2019
Merged

Add get/settimeofday retargets #8497

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57 changes: 39 additions & 18 deletions platform/mbed_rtc_time.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -78,12 +78,22 @@ static void (*_rtc_write)(time_t t) = NULL;
#ifdef __cplusplus
extern "C" {
#endif
#if defined (__ICCARM__)
time_t __time32(time_t *timer)
#else
time_t time(time_t *timer)
#endif

int settimeofday(const struct timeval *tv, MBED_UNUSED const struct timezone *tz)
{
_mutex->lock();
if (_rtc_init != NULL) {
_rtc_init();
}
if (_rtc_write != NULL) {
_rtc_write(tv->tv_sec);
}
_mutex->unlock();

return 0;
}

int gettimeofday(struct timeval *tv, MBED_UNUSED void *tz)
{
_mutex->lock();
if (_rtc_isenabled != NULL) {
Expand All @@ -92,28 +102,40 @@ time_t time(time_t *timer)
}
}

time_t t = (time_t) -1;
time_t t = (time_t) - 1;
if (_rtc_read != NULL) {
t = _rtc_read();
}

tv->tv_sec = t;
tv->tv_usec = 0;

_mutex->unlock();

return 0;
}

#if defined (__ICCARM__)
time_t __time32(time_t *timer)
#else
time_t time(time_t *timer)
#endif
{
struct timeval tv;
gettimeofday(&tv, NULL);

if (timer != NULL) {
*timer = t;
*timer = tv.tv_sec;
}
_mutex->unlock();
return t;

return tv.tv_sec;
}


void set_time(time_t t)
{
_mutex->lock();
if (_rtc_init != NULL) {
_rtc_init();
}
if (_rtc_write != NULL) {
_rtc_write(t);
}
_mutex->unlock();
const struct timeval tv = { t, 0 };
settimeofday(&tv, NULL);
}

void attach_rtc(time_t (*read_rtc)(void), void (*write_rtc)(time_t), void (*init_rtc)(void), int (*isenabled_rtc)(void))
Expand All @@ -127,7 +149,6 @@ void attach_rtc(time_t (*read_rtc)(void), void (*write_rtc)(time_t), void (*init
}



#ifdef __cplusplus
}
#endif
32 changes: 32 additions & 0 deletions platform/mbed_rtc_time.h
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,14 @@
extern "C" {
#endif

/* Timeval definition for non GCC_ARM toolchains */
#if !defined(__GNUC__) || defined(__CC_ARM) || defined(__clang__)
struct timeval {
time_t tv_sec;
int32_t tv_usec;
};
#endif

/** Implementation of the C time.h functions
*
* Provides mechanisms to set and read the current time, based
Expand Down Expand Up @@ -90,6 +98,30 @@ void set_time(time_t t);
*/
void attach_rtc(time_t (*read_rtc)(void), void (*write_rtc)(time_t), void (*init_rtc)(void), int (*isenabled_rtc)(void));

/** Standard lib retarget, get time since Epoch
*
* @param tv Structure containing time_t secondsa and suseconds_t microseconds. Due to
* separate target specific RTC implementations only the seconds component is used.
* @param tz DEPRECATED IN THE STANDARD: This parameter is left in for legacy code. It is
* not used.
* @return 0 on success, -1 on a failure.
* @note Synchronization level: Thread safe
*
*/
int gettimeofday(struct timeval *tv, void *tz);

/** Standard lib retarget, set time since Epoch
*
* @param tv Structure containing time_t secondsa and suseconds_t microseconds. Due to
* separate target specific RTC implementations only the seconds component is used.
* @param tz DEPRECATED IN THE STANDARD: This parameter is left in for legacy code. It is
* not used.
* @return Time in seconds on success, -1 on a failure.
* @note Synchronization level: Thread safe
*
*/
int settimeofday(const struct timeval *tv, const struct timezone *tz);

#ifdef __cplusplus
}
#endif
Expand Down