112 lines
3.9 KiB
C
112 lines
3.9 KiB
C
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/**
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* \file
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*
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* \brief SAM System related functionality
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*
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* Copyright (C) 2012-2015 Atmel Corporation. All rights reserved.
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*
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* \asf_license_start
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*
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* \page License
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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. The name of Atmel may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* 4. This software may only be redistributed and used in connection with an
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* Atmel microcontroller product.
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*
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* THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
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* 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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* EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* 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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* \asf_license_stop
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*
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*/
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/*
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* Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
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*/
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#include <system.h>
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/**
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* \internal
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* Dummy initialization function, used as a weak alias target for the various
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* init functions called by \ref system_init().
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*/
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void _system_dummy_init(void);
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void _system_dummy_init(void)
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{
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return;
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}
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#if !defined(__DOXYGEN__)
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# if defined(__GNUC__) || defined(__CC_ARM)
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void system_clock_init(void) WEAK __attribute__((alias("_system_dummy_init")));
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void system_board_init(void) WEAK __attribute__((alias("_system_dummy_init")));
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void _system_events_init(void) WEAK __attribute__((alias("_system_dummy_init")));
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void _system_extint_init(void) WEAK __attribute__((alias("_system_dummy_init")));
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void _system_divas_init(void) WEAK __attribute__((alias("_system_dummy_init")));
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# elif defined(__ICCARM__)
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void system_clock_init(void);
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void system_board_init(void);
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void _system_events_init(void);
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void _system_extint_init(void);
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void _system_divas_init(void);
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# pragma weak system_clock_init=_system_dummy_init
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# pragma weak system_board_init=_system_dummy_init
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# pragma weak _system_events_init=_system_dummy_init
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# pragma weak _system_extint_init=_system_dummy_init
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# pragma weak _system_divas_init=_system_dummy_init
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# endif
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#endif
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/**
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* \brief Initialize system
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*
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* This function will call the various initialization functions within the
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* system namespace. If a given optional system module is not available, the
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* associated call will effectively be a NOP (No Operation).
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*
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* Currently the following initialization functions are supported:
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* - System clock initialization (via the SYSTEM CLOCK sub-module)
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* - Board hardware initialization (via the Board module)
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* - Event system driver initialization (via the EVSYS module)
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* - External Interrupt driver initialization (via the EXTINT module)
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*/
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void system_init(void)
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{
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/* Configure GCLK and clock sources according to conf_clocks.h */
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system_clock_init();
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/* Initialize board hardware */
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system_board_init();
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/* Initialize EVSYS hardware */
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_system_events_init();
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/* Initialize External hardware */
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_system_extint_init();
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/* Initialize DIVAS hardware */
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_system_divas_init();
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}
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