/* ---------------------------------------------------------------------------- * ATMEL Microcontroller Software Support * ---------------------------------------------------------------------------- * Copyright (c) 2008, 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. * ---------------------------------------------------------------------------- */ //------------------------------------------------------------------------------ /// \unit /// !Purpose /// /// Configuration and handling of PIT. /// /// !Usage /// /// -# Initialize System timer for a period in µsecond with /// PIT_Init /// -# Set the PIT Periodic Interval Value with PIT_SetPIV /// -# Enable the PIT with PIT_Enable /// -# Enable & disable PIT interrupts using PIT_EnableInt and /// PIT_DisableInt /// -# Read PIT mode register /// PIT_GetMode /// -# Read PIT status register /// PIT_GetStatus /// -# Read PIT CPIV and PICNT without ressetting the counters /// PIT_GetPIIR /// -# Read System timer CPIV and PICNT without ressetting the counters /// PIT_GetPIVR //------------------------------------------------------------------------------ #ifndef PIT_H #define PIT_H //------------------------------------------------------------------------------ // Headers //------------------------------------------------------------------------------ //------------------------------------------------------------------------------ // Exported functions //------------------------------------------------------------------------------ extern void PIT_Init(unsigned int period, unsigned int pit_frequency); extern void PIT_SetPIV(unsigned int piv); extern void PIT_Enable(void); extern void PIT_EnableIT(void); extern void PIT_DisableIT(void); extern unsigned int PIT_GetMode(void); extern unsigned int PIT_GetStatus(void); extern unsigned int PIT_GetPIIR(void); extern unsigned int PIT_GetPIVR(void); #endif //#ifndef PIT_H