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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011,2012,2013 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/>.
*/
/**
* @file st.c
* @brief ST Driver code.
*
* @addtogroup ST
* @{
*/
#include "hal.h"
#if (OSAL_ST_MODE != OSAL_ST_MODE_NONE) || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported variables. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local types. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local variables. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
/**
* @brief ST Driver initialization.
* @note This function is implicitly invoked by @p halInit(), there is
* no need to explicitly initialize the driver.
*
* @init
*/
void stInit(void) {
st_lld_init();
}
/**
* @brief Starts the alarm.
* @note Makes sure that no spurious alarms are triggered after
* this call.
* @note This functionality is only available in free running mode, the
* behavior in periodic mode is undefined.
*
* @param[in] time the time to be set for the first alarm
*
* @api
*/
void stStartAlarm(systime_t time) {
osalDbgAssert(stIsAlarmActive() == false, "already active");
st_lld_start_alarm(time);
}
/**
* @brief Stops the alarm interrupt.
* @note This functionality is only available in free running mode, the
* behavior in periodic mode is undefined.
*
* @api
*/
void stStopAlarm(void) {
osalDbgAssert(stIsAlarmActive() != false, "not active");
st_lld_stop_alarm();
}
/**
* @brief Sets the alarm time.
* @note This functionality is only available in free running mode, the
* behavior in periodic mode is undefined.
*
* @param[in] time the time to be set for the next alarm
*
* @api
*/
void stSetAlarm(systime_t time) {
osalDbgAssert(stIsAlarmActive() != false, "not active");
st_lld_set_alarm(time);
}
/**
* @brief Returns the current alarm time.
* @note This functionality is only available in free running mode, the
* behavior in periodic mode is undefined.
*
* @return The currently set alarm time.
*
* @api
*/
systime_t stGetAlarm(void) {
osalDbgAssert(stIsAlarmActive() != false, "not active");
return st_lld_get_alarm();
}
#endif /* OSAL_ST_MODE != OSAL_ST_MODE_NONE */
/** @} */
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