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Last commit 20 Feb 2019 by 
mbed official
targets/hal/TARGET_Atmel/TARGET_SAM21/drivers/system/system.c@579:53297373a894, 2015-07-01 (annotated)
- Committer:
- mbed_official
- Date:
- Wed Jul 01 09:45:11 2015 +0100
- Revision:
- 579:53297373a894
- Child:
- 592:a274ee790e56
Synchronized with git revision d5b4d2ab9c47edb4dc5776e7177b0c2263459081
Full URL: https://github.com/mbedmicro/mbed/commit/d5b4d2ab9c47edb4dc5776e7177b0c2263459081/
Initial version of drivers for SAMR21
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| mbed_official | 579:53297373a894 | 1 | /** |
| mbed_official | 579:53297373a894 | 2 | * \file |
| mbed_official | 579:53297373a894 | 3 | * |
| mbed_official | 579:53297373a894 | 4 | * \brief SAM System related functionality |
| mbed_official | 579:53297373a894 | 5 | * |
| mbed_official | 579:53297373a894 | 6 | * Copyright (C) 2012-2014 Atmel Corporation. All rights reserved. |
| mbed_official | 579:53297373a894 | 7 | * |
| mbed_official | 579:53297373a894 | 8 | * \asf_license_start |
| mbed_official | 579:53297373a894 | 9 | * |
| mbed_official | 579:53297373a894 | 10 | * \page License |
| mbed_official | 579:53297373a894 | 11 | * |
| mbed_official | 579:53297373a894 | 12 | * Redistribution and use in source and binary forms, with or without |
| mbed_official | 579:53297373a894 | 13 | * modification, are permitted provided that the following conditions are met: |
| mbed_official | 579:53297373a894 | 14 | * |
| mbed_official | 579:53297373a894 | 15 | * 1. Redistributions of source code must retain the above copyright notice, |
| mbed_official | 579:53297373a894 | 16 | * this list of conditions and the following disclaimer. |
| mbed_official | 579:53297373a894 | 17 | * |
| mbed_official | 579:53297373a894 | 18 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| mbed_official | 579:53297373a894 | 19 | * this list of conditions and the following disclaimer in the documentation |
| mbed_official | 579:53297373a894 | 20 | * and/or other materials provided with the distribution. |
| mbed_official | 579:53297373a894 | 21 | * |
| mbed_official | 579:53297373a894 | 22 | * 3. The name of Atmel may not be used to endorse or promote products derived |
| mbed_official | 579:53297373a894 | 23 | * from this software without specific prior written permission. |
| mbed_official | 579:53297373a894 | 24 | * |
| mbed_official | 579:53297373a894 | 25 | * 4. This software may only be redistributed and used in connection with an |
| mbed_official | 579:53297373a894 | 26 | * Atmel microcontroller product. |
| mbed_official | 579:53297373a894 | 27 | * |
| mbed_official | 579:53297373a894 | 28 | * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED |
| mbed_official | 579:53297373a894 | 29 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| mbed_official | 579:53297373a894 | 30 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE |
| mbed_official | 579:53297373a894 | 31 | * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR |
| mbed_official | 579:53297373a894 | 32 | * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| mbed_official | 579:53297373a894 | 33 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| mbed_official | 579:53297373a894 | 34 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| mbed_official | 579:53297373a894 | 35 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| mbed_official | 579:53297373a894 | 36 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
| mbed_official | 579:53297373a894 | 37 | * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| mbed_official | 579:53297373a894 | 38 | * POSSIBILITY OF SUCH DAMAGE. |
| mbed_official | 579:53297373a894 | 39 | * |
| mbed_official | 579:53297373a894 | 40 | * \asf_license_stop |
| mbed_official | 579:53297373a894 | 41 | * |
| mbed_official | 579:53297373a894 | 42 | */ |
| mbed_official | 579:53297373a894 | 43 | /** |
| mbed_official | 579:53297373a894 | 44 | * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a> |
| mbed_official | 579:53297373a894 | 45 | */ |
| mbed_official | 579:53297373a894 | 46 | |
| mbed_official | 579:53297373a894 | 47 | #include <system.h> |
| mbed_official | 579:53297373a894 | 48 | |
| mbed_official | 579:53297373a894 | 49 | /** |
| mbed_official | 579:53297373a894 | 50 | * \internal |
| mbed_official | 579:53297373a894 | 51 | * Dummy initialization function, used as a weak alias target for the various |
| mbed_official | 579:53297373a894 | 52 | * init functions called by \ref system_init(). |
| mbed_official | 579:53297373a894 | 53 | */ |
| mbed_official | 579:53297373a894 | 54 | void _system_dummy_init(void); |
| mbed_official | 579:53297373a894 | 55 | void _system_dummy_init(void) |
| mbed_official | 579:53297373a894 | 56 | { |
| mbed_official | 579:53297373a894 | 57 | return; |
| mbed_official | 579:53297373a894 | 58 | } |
| mbed_official | 579:53297373a894 | 59 | |
| mbed_official | 579:53297373a894 | 60 | #if !defined(__DOXYGEN__) |
| mbed_official | 579:53297373a894 | 61 | # if defined(__GNUC__) |
| mbed_official | 579:53297373a894 | 62 | void system_clock_init(void) WEAK __attribute__((alias("_system_dummy_init"))); |
| mbed_official | 579:53297373a894 | 63 | void system_board_init(void) WEAK __attribute__((alias("_system_dummy_init"))); |
| mbed_official | 579:53297373a894 | 64 | void _system_events_init(void) WEAK __attribute__((alias("_system_dummy_init"))); |
| mbed_official | 579:53297373a894 | 65 | void _system_extint_init(void) WEAK __attribute__((alias("_system_dummy_init"))); |
| mbed_official | 579:53297373a894 | 66 | # elif defined(__ICCARM__) |
| mbed_official | 579:53297373a894 | 67 | void system_clock_init(void); |
| mbed_official | 579:53297373a894 | 68 | void system_board_init(void); |
| mbed_official | 579:53297373a894 | 69 | void _system_events_init(void); |
| mbed_official | 579:53297373a894 | 70 | void _system_extint_init(void); |
| mbed_official | 579:53297373a894 | 71 | # pragma weak system_clock_init=_system_dummy_init |
| mbed_official | 579:53297373a894 | 72 | # pragma weak system_board_init=_system_dummy_init |
| mbed_official | 579:53297373a894 | 73 | # pragma weak _system_events_init=_system_dummy_init |
| mbed_official | 579:53297373a894 | 74 | # pragma weak _system_extint_init=_system_dummy_init |
| mbed_official | 579:53297373a894 | 75 | # endif |
| mbed_official | 579:53297373a894 | 76 | #endif |
| mbed_official | 579:53297373a894 | 77 | |
| mbed_official | 579:53297373a894 | 78 | /** |
| mbed_official | 579:53297373a894 | 79 | * \brief Initialize system. |
| mbed_official | 579:53297373a894 | 80 | * |
| mbed_official | 579:53297373a894 | 81 | * This function will call the various initialization functions within the |
| mbed_official | 579:53297373a894 | 82 | * system namespace. If a given optional system module is not available, the |
| mbed_official | 579:53297373a894 | 83 | * associated call will effectively be a NOP (No Operation). |
| mbed_official | 579:53297373a894 | 84 | * |
| mbed_official | 579:53297373a894 | 85 | * Currently the following initialization functions are supported: |
| mbed_official | 579:53297373a894 | 86 | * - System clock initialization (via the SYSTEM CLOCK sub-module) |
| mbed_official | 579:53297373a894 | 87 | * - Board hardware initialization (via the Board module) |
| mbed_official | 579:53297373a894 | 88 | * - Event system driver initialization (via the EVSYS module) |
| mbed_official | 579:53297373a894 | 89 | * - External Interrupt driver initialization (via the EXTINT module) |
| mbed_official | 579:53297373a894 | 90 | */ |
| mbed_official | 579:53297373a894 | 91 | void system_init(void) |
| mbed_official | 579:53297373a894 | 92 | { |
| mbed_official | 579:53297373a894 | 93 | /* Configure GCLK and clock sources according to conf_clocks.h */ |
| mbed_official | 579:53297373a894 | 94 | system_clock_init(); |
| mbed_official | 579:53297373a894 | 95 | |
| mbed_official | 579:53297373a894 | 96 | /* Initialize board hardware */ |
| mbed_official | 579:53297373a894 | 97 | system_board_init(); |
| mbed_official | 579:53297373a894 | 98 | |
| mbed_official | 579:53297373a894 | 99 | /* Initialize EVSYS hardware */ |
| mbed_official | 579:53297373a894 | 100 | _system_events_init(); |
| mbed_official | 579:53297373a894 | 101 | |
| mbed_official | 579:53297373a894 | 102 | /* Initialize External hardware */ |
| mbed_official | 579:53297373a894 | 103 | _system_extint_init(); |
| mbed_official | 579:53297373a894 | 104 | } |
| mbed_official | 579:53297373a894 | 105 |
