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/*
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @addtogroup Time
* @{
*/
#include <ch.h>
#ifdef CH_USE_SLEEP
/**
* Suspends the invoking thread for the specified time.
* @param time the system ticks number
*/
void chThdSleep(t_time time) {
VirtualTimer vt;
chSysLock();
chVTSetI(&vt, time, (t_vtfunc)chSchReadyI, currp);
chSchGoSleepI(PRSLEEP);
chSysUnlock();
}
#ifdef CH_USE_SYSTEMTIME
/**
* Returns the number of system ticks since the \p chSysInit() invocation.
* @return the system ticks number
* @note The counter can reach its maximum and return to zero.
* @note This function is designed to work with the \p chThdSleepUntil().
* @note The function is available only if the \p CH_USE_SYSTEMTIME
* option is enabled in \p chconf.h.
*/
t_time chSysGetTime(void) {
return stime;
}
/**
* Suspends the invoking thread until the system time arrives to the specified
* value.
* @param time the system time
* @note The function is available only if the \p CH_USE_SYSTEMTIME
* option is enabled in \p chconf.h.
*/
void chThdSleepUntil(t_time time) {
VirtualTimer vt;
chSysLock();
chVTSetI(&vt, (t_time)(time - stime), (t_vtfunc)chSchReadyI, currp);
chSchGoSleepI(PRSLEEP);
chSysUnlock();
}
#endif /* CH_USE_SYSTEMTIME */
#endif /* CH_USE_SLEEP */
/** @} */
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