mbed library sources. Supersedes mbed-src.
Fork of mbed-dev by
Diff: targets/hal/TARGET_Atmel/TARGET_SAM_CortexM0P/drivers/system/system.c
- Revision:
- 15:a81a8d6c1dfe
- Child:
- 64:41a834223ea3
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/hal/TARGET_Atmel/TARGET_SAM_CortexM0P/drivers/system/system.c Wed Nov 04 16:30:11 2015 +0000 @@ -0,0 +1,111 @@ +/** + * \file + * + * \brief SAM System related functionality + * + * Copyright (C) 2012-2015 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 + * + */ +/* + * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a> + */ + +#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"))); +void _system_events_init(void) WEAK __attribute__((alias("_system_dummy_init"))); +void _system_extint_init(void) WEAK __attribute__((alias("_system_dummy_init"))); +void _system_divas_init(void) WEAK __attribute__((alias("_system_dummy_init"))); +# elif defined(__ICCARM__) +void system_clock_init(void); +void system_board_init(void); +void _system_events_init(void); +void _system_extint_init(void); +void _system_divas_init(void); +# pragma weak system_clock_init=_system_dummy_init +# pragma weak system_board_init=_system_dummy_init +# pragma weak _system_events_init=_system_dummy_init +# pragma weak _system_extint_init=_system_dummy_init +# pragma weak _system_divas_init=_system_dummy_init +# endif +#endif + +/** + * \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) + * - Event system driver initialization (via the EVSYS module) + * - External Interrupt driver initialization (via the EXTINT module) + */ +void system_init(void) +{ + /* Configure GCLK and clock sources according to conf_clocks.h */ + system_clock_init(); + + /* Initialize board hardware */ + system_board_init(); + + /* Initialize EVSYS hardware */ + _system_events_init(); + + /* Initialize External hardware */ + _system_extint_init(); + + /* Initialize DIVAS hardware */ + _system_divas_init(); +} +