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jeremybenn |
/* ----------------------------------------------------------------------------
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* ATMEL Microcontroller Software Support
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* ----------------------------------------------------------------------------
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* Copyright (c) 2008, Atmel Corporation
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the disclaimer below.
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*
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* Atmel's name may not be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* ----------------------------------------------------------------------------
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*/
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//------------------------------------------------------------------------------
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/// \unit
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///
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/// !Purpose
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///
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/// Interface for configuration the Periodic Interval Timer (PIT) peripheral.
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///
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/// !Usage
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///
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/// -# Initialize the PIT with the desired period using PIT_Init().
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/// Alternatively, the Periodic Interval Value (PIV) can be configured
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/// manually using PIT_SetPIV().
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/// -# Start the PIT counting using PIT_Enable().
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/// -# Enable & disable the PIT interrupt using PIT_EnableIT() and
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/// PIT_DisableIT().
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/// -# Retrieve the current status of the PIT using PIT_GetStatus().
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/// -# To get the current value of the internal counter and the number of ticks
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/// that have occurred, use either PIT_GetPIVR() or PIT_GetPIIR() depending
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/// on whether you want the values to be cleared or not.
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//------------------------------------------------------------------------------
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#ifndef PIT_H
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#define PIT_H
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//------------------------------------------------------------------------------
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// Global Functions
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//------------------------------------------------------------------------------
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extern void PIT_Init(unsigned int period, unsigned int pit_frequency);
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extern void PIT_SetPIV(unsigned int piv);
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extern void PIT_Enable(void);
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extern void PIT_EnableIT(void);
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extern void PIT_DisableIT(void);
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extern unsigned int PIT_GetMode(void);
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extern unsigned int PIT_GetStatus(void);
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extern unsigned int PIT_GetPIIR(void);
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extern unsigned int PIT_GetPIVR(void);
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#endif //#ifndef PIT_H
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