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184 lines
5.3 KiB
C
184 lines
5.3 KiB
C
/* ----------------------------------------------------------------------------
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* SAM Software Package License
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* ----------------------------------------------------------------------------
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* Copyright (c) 2011, 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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* Headers
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*----------------------------------------------------------------------------*/
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#include "chip.h"
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//#include <assert.h>
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/*----------------------------------------------------------------------------
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* Local definitions
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*----------------------------------------------------------------------------*/
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#define MASK_STATUS0 0xFFFFFFFC
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#define MASK_STATUS1 0xFFFFFFFF
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/*----------------------------------------------------------------------------
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* Exported functions
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*----------------------------------------------------------------------------*/
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/**
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* \brief Enables the clock of a peripheral. The peripheral ID is used
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* to identify which peripheral is targetted.
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*
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* \note The ID must NOT be shifted (i.e. 1 << ID_xxx).
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*
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* \param id Peripheral ID (ID_xxx).
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*/
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extern void PMC_EnablePeripheral( uint32_t dwId )
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{
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#if (defined _SAM3S_) || (defined _SAM3S8_) || (defined _SAM3XA_)
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//assert( dwId < 35 ) ;
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if ( dwId < 32 )
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{
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if ( (PMC->PMC_PCSR0 & ((uint32_t)1 << dwId)) == ((uint32_t)1 << dwId) )
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{
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// TRACE_DEBUG( "PMC_EnablePeripheral: clock of peripheral" " %u is already enabled\n\r", dwId ) ;
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}
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else
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{
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PMC->PMC_PCER0 = 1 << dwId ;
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}
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}
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else
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{
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dwId -= 32;
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if ((PMC->PMC_PCSR1 & ((uint32_t)1 << dwId)) == ((uint32_t)1 << dwId))
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{
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// TRACE_DEBUG( "PMC_EnablePeripheral: clock of peripheral" " %u is already enabled\n\r", dwId + 32 ) ;
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}
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else
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{
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PMC->PMC_PCER1 = 1 << dwId ;
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}
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}
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#elif (defined _SAM3N_) || (defined _SAM3U_)
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if ( (PMC->PMC_PCSR0 & ((uint32_t)1 << dwId)) != ((uint32_t)1 << dwId) )
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{
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PMC->PMC_PCER0 = 1 << dwId ;
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}
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#else
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#error "The specified chip is not supported."
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#endif
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}
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/**
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* \brief Disables the clock of a peripheral. The peripheral ID is used
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* to identify which peripheral is targetted.
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*
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* \note The ID must NOT be shifted (i.e. 1 << ID_xxx).
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*
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* \param id Peripheral ID (ID_xxx).
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*/
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extern void PMC_DisablePeripheral( uint32_t dwId )
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{
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#if (defined _SAM3S_) || (defined _SAM3S8_) || (defined _SAM3XA_)
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//assert( dwId < 35 ) ;
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if ( dwId < 32 )
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{
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if ( (PMC->PMC_PCSR0 & ((uint32_t)1 << dwId)) == ((uint32_t)1 << dwId) )
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{
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PMC->PMC_PCDR0 = 1 << dwId ;
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}
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}
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else
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{
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dwId -= 32 ;
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if ( (PMC->PMC_PCSR1 & ((uint32_t)1 << dwId)) == ((uint32_t)1 << dwId) )
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{
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PMC->PMC_PCDR1 = 1 << dwId ;
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}
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}
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#elif (defined _SAM3N_) || (defined _SAM3U_)
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if ( (PMC->PMC_PCSR0 & ((uint32_t)1 << dwId)) == ((uint32_t)1 << dwId) )
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{
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PMC->PMC_PCDR0 = 1 << dwId ;
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}
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#else
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#error "The specified chip is not supported."
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#endif
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}
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/**
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* \brief Get the status of the specified peripheral clock.
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*
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* \note The ID must NOT be shifted (i.e. 1 << ID_xxx).
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*
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* \param dwId Peripheral ID (ID_xxx).
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*
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* \retval 0 Clock is active.
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* \retval 1 Clock is inactive.
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* \retval 2 Invalid parameter.
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*/
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extern uint32_t PMC_IsPeripheralEnabled( uint32_t dwId )
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{
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#if (defined _SAM3S_) || (defined _SAM3S8_) || (defined _SAM3XA_)
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//assert( dwId < 35 ) ;
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if ( dwId < 32 )
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{
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if ( PMC->PMC_PCSR0 & (1 << dwId) )
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{
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return 0 ;
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}
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else
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{
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return 1 ;
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}
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}
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else
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{
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if ( PMC->PMC_PCSR1 & (1 << (dwId - 32)) )
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{
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return 0 ;
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}
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else
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{
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return 1 ;
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}
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}
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#elif (defined _SAM3N_) || (defined _SAM3U_)
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if ( (PMC->PMC_PCSR0 & ((uint32_t)1 << dwId)) )
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{
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return 0 ;
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}
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else
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{
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return 1 ;
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}
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#else
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#error "The specified chip is not supported."
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#endif
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}
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