/** | |
* \file | |
* | |
* \brief SAM D20 System related functionality | |
* | |
* Copyright (C) 2012-2013 Atmel Corporation. All rights reserved. | |
* | |
* \asf_license_start | |
* | |
* \page License | |
* | |
* Redistribution and use in source and binary forms, with or without | |
* modification, are permitted provided that the following conditions are met: | |
* | |
* 1. Redistributions of source code must retain the above copyright notice, | |
* this list of conditions and the following disclaimer. | |
* | |
* 2. Redistributions in binary form must reproduce the above copyright notice, | |
* this list of conditions and the following disclaimer in the documentation | |
* and/or other materials provided with the distribution. | |
* | |
* 3. The name of Atmel may not be used to endorse or promote products derived | |
* from this software without specific prior written permission. | |
* | |
* 4. This software may only be redistributed and used in connection with an | |
* Atmel microcontroller product. | |
* | |
* 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 | |
* EXPRESSLY AND SPECIFICALLY 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. | |
* | |
* \asf_license_stop | |
* | |
*/ | |
#include <system.h> | |
/** | |
* \internal | |
* Dummy initialization function, used as a weak alias target for the various | |
* init functions called by \ref system_init(). | |
*/ | |
void _system_dummy_init(void); | |
void _system_dummy_init(void) | |
{ | |
return; | |
} | |
#if !defined(__DOXYGEN__) | |
# if defined(__GNUC__) | |
void system_clock_init(void) WEAK __attribute__((alias("_system_dummy_init"))); | |
void system_board_init(void) WEAK __attribute__((alias("_system_dummy_init"))); | |
# elif defined(__ICCARM__) | |
void system_clock_init(void); | |
void system_board_init(void); | |
# pragma weak system_clock_init=_system_dummy_init | |
# pragma weak system_board_init=_system_dummy_init | |
# endif | |
#endif | |
/** | |
* Handler for the CPU Hard Fault interrupt, fired if an illegal access was | |
* attempted to a memory address. | |
*/ | |
void HardFault_Handler(void) | |
{ | |
while (1) { | |
/* Infinite loop if CPU exception is detected */ | |
Assert(false); | |
} | |
} | |
/** | |
* \brief Initialize system | |
* | |
* This function will call the various initialization functions within the | |
* system namespace. If a given optional system module is not available, the | |
* associated call will effectively be a NOP (No Operation). | |
* | |
* Currently the following initialization functions are supported: | |
* - System clock initialization (via the SYSTEM CLOCK sub-module) | |
* - Board hardware initialization (via the Board module) | |
*/ | |
void system_init(void) | |
{ | |
/* Configure GCLK and clock sources according to conf_clocks.h */ | |
system_clock_init(); | |
/* Initialize board hardware */ | |
system_board_init(); | |
} | |