76 lines
3.0 KiB
C
76 lines
3.0 KiB
C
/**************************************************************************/
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/*!
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@file cpu.h
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@author K. Townsend (microBuilder.eu)
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@date 22 March 2010
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@version 0.10
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@section LICENSE
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Software License Agreement (BSD License)
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Copyright (c) 2010, microBuilder SARL
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All rights reserved.
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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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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the copyright holders nor the
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names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**************************************************************************/
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#ifndef _CPU_H_
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#define _CPU_H_
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#include "projectconfig.h"
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// Macro to initialise, reset and enable the cycle counter.
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// This can be used for rough timing and performance tests
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// by resetting the cycle counter before a function, and
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// then reading the value after with "int count = DWT_CYCCNT"
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//
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// CPU_RESET_CYCLECOUNTER;
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// ... do something
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// int count = DWT_CYCCNT;
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//
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#define CPU_RESET_CYCLECOUNTER do { SCB_DEMCR = SCB_DEMCR | 0x01000000; \
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DWT_CYCCNT = 0; \
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DWT_CTRL = DWT_CTRL | 1 ; } while(0)
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/**************************************************************************/
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/*!
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@brief Indicates the value for the PLL multiplier
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*/
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/**************************************************************************/
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typedef enum
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{
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CPU_MULTIPLIER_1 = 0,
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CPU_MULTIPLIER_2,
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CPU_MULTIPLIER_3,
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CPU_MULTIPLIER_4,
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CPU_MULTIPLIER_5,
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CPU_MULTIPLIER_6
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}
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cpuMultiplier_t;
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void cpuPllSetup (cpuMultiplier_t multiplier);
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void cpuInit (void);
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#endif |