/* ---------------------------------------------------------------------------- | |
* SAM Software Package License | |
* ---------------------------------------------------------------------------- | |
* Copyright (c) 2011, Atmel Corporation | |
* | |
* All rights reserved. | |
* | |
* Redistribution and use in source and binary forms, with or without | |
* modification, are permitted provided that the following conditions are met: | |
* | |
* - Redistributions of source code must retain the above copyright notice, | |
* this list of conditions and the disclaimer below. | |
* | |
* Atmel's name may not be used to endorse or promote products derived from | |
* this software without specific prior written permission. | |
* | |
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR | |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE | |
* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, | |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, | |
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, | |
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
* ---------------------------------------------------------------------------- | |
*/ | |
#ifndef _PIT_H_ | |
#define _PIT_H_ | |
/*------------------------------------------------------------------------------ | |
* Headers | |
*------------------------------------------------------------------------------*/ | |
#include <stdint.h> | |
/*---------------------------------------------------------------------------- | |
* Exported functions | |
*----------------------------------------------------------------------------*/ | |
#ifdef __cplusplus | |
extern "C" { | |
#endif | |
/** | |
* \brief Initialize the Periodic Interval Timer to generate a tick at the | |
* specified period, given the current master clock frequency. | |
* | |
* \param period Period in micro seconds. | |
*/ | |
extern void pit_init(uint32_t period); | |
/** | |
* \brief Set the Periodic Interval Value of the PIT. | |
* | |
* \param piv PIV value to set. | |
*/ | |
extern void pit_set_piv(uint32_t piv); | |
/** | |
* \brief Enables the PIT if this is not already the case. | |
* | |
*/ | |
extern void pit_enable(void); | |
/** | |
* \brief Disnables the PIT when PIV value is reached. | |
* | |
*/ | |
extern void pit_disable(void); | |
/** | |
* \brief Enable the PIT periodic interrupt. | |
* | |
*/ | |
extern void pit_enable_it(void); | |
/** | |
* \brief Disables the PIT periodic interrupt. | |
* | |
*/ | |
extern void pit_disable_it(void); | |
/** | |
* \brief Returns the value of the PIT mode register. | |
* | |
* \return PIT_MR value. | |
*/ | |
extern uint32_t pit_get_mode(void); | |
/** | |
* \brief Returns the value of the PIT status register, clearing it as | |
* a side effect. | |
* | |
* \return PIT_SR value. | |
*/ | |
extern uint32_t pit_get_status(void); | |
/** | |
* \brief Returns the value of the PIT Image Register, to read PICNT | |
* and CPIV without clearing the current values. | |
* | |
* \return PIT_PIIR value. | |
*/ | |
extern uint32_t pit_get_piir(void); | |
/** | |
* \brief Returns the value of the PIT Value Register, clearing it as | |
* a side effect. | |
* | |
* \return PITC_PIVR value. | |
*/ | |
extern uint32_t pit_get_pivr(void); | |
#ifdef __cplusplus | |
} | |
#endif | |
#endif /* #ifndef _PIT_H_ */ |