69 lines
2.3 KiB
C
69 lines
2.3 KiB
C
/* scp.c - TI LM3S6965 System Control Peripherals interface */
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/*
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* Copyright (c) 2013-2014 Wind River Systems, Inc.
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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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* 1) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2) Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3) Neither the name of Wind River Systems nor the names of its contributors
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* may be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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DESCRIPTION
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Library for controlling target-specific devices present in the 0x400fe000
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peripherals memory region.
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Currently, only enabling the main OSC with default value is implemented.
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*/
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#include <stdint.h>
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#include <toolchain.h>
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#include <sections.h>
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#include "scp.h"
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/* System Control Peripheral (SCP) Registers */
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volatile struct __scp __scp_section __scp;
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/*******************************************************************************
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*
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* _ScpMainOscEnable - enable main oscillator with default frequency of 6MHz
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*
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* RETURNS: N/A
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*/
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void _ScpMainOscEnable(void)
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{
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union __rcc reg;
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reg.value = __scp.clock.rcc.value;
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reg.bit.moscdis = 0;
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reg.bit.oscsrc = _SCP_OSC_SOURCE_MAIN;
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reg.bit.xtal = _SCP_CRYSTAL_6MHZ;
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__scp.clock.rcc.value = reg.value;
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}
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