sai kiran / mbed-src

Watchdog Timer

Fork of mbed-src by mbed official

targets/cmsis/TARGET_STM/TARGET_STM32L4/TARGET_NUCLEO_L476RG/TOOLCHAIN_ARM_STD/sys.cpp@623:db79ecd649d0, 2015-09-16 (annotated)

Committer:
mbed_official
Date:
Wed Sep 16 11:15:09 2015 +0100
Revision:
623:db79ecd649d0
Synchronized with git revision 45d00c36b3132acdfcb75bda6258bd8444ac5392



Full URL: https://github.com/mbedmicro/mbed/commit/45d00c36b3132acdfcb75bda6258bd8444ac5392/



[NUCLEO_L476RG] add hal and target files

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 623:db79ecd649d0 1 /* mbed Microcontroller Library - stackheap
mbed_official 623:db79ecd649d0 2 * Setup a fixed single stack/heap memory model,
mbed_official 623:db79ecd649d0 3 * between the top of the RW/ZI region and the stackpointer
mbed_official 623:db79ecd649d0 4 *******************************************************************************
mbed_official 623:db79ecd649d0 5 * Copyright (c) 2014, STMicroelectronics
mbed_official 623:db79ecd649d0 6 * All rights reserved.
mbed_official 623:db79ecd649d0 7 *
mbed_official 623:db79ecd649d0 8 * Redistribution and use in source and binary forms, with or without
mbed_official 623:db79ecd649d0 9 * modification, are permitted provided that the following conditions are met:
mbed_official 623:db79ecd649d0 10 *
mbed_official 623:db79ecd649d0 11 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 623:db79ecd649d0 12 * this list of conditions and the following disclaimer.
mbed_official 623:db79ecd649d0 13 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 623:db79ecd649d0 14 * this list of conditions and the following disclaimer in the documentation
mbed_official 623:db79ecd649d0 15 * and/or other materials provided with the distribution.
mbed_official 623:db79ecd649d0 16 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 623:db79ecd649d0 17 * may be used to endorse or promote products derived from this software
mbed_official 623:db79ecd649d0 18 * without specific prior written permission.
mbed_official 623:db79ecd649d0 19 *
mbed_official 623:db79ecd649d0 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 623:db79ecd649d0 21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 623:db79ecd649d0 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 623:db79ecd649d0 23 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 623:db79ecd649d0 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 623:db79ecd649d0 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 623:db79ecd649d0 26 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 623:db79ecd649d0 27 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 623:db79ecd649d0 28 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 623:db79ecd649d0 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 623:db79ecd649d0 30 *******************************************************************************
mbed_official 623:db79ecd649d0 31 */
mbed_official 623:db79ecd649d0 32
mbed_official 623:db79ecd649d0 33 #ifdef __cplusplus
mbed_official 623:db79ecd649d0 34 extern "C" {
mbed_official 623:db79ecd649d0 35 #endif
mbed_official 623:db79ecd649d0 36
mbed_official 623:db79ecd649d0 37 #include <rt_misc.h>
mbed_official 623:db79ecd649d0 38 #include <stdint.h>
mbed_official 623:db79ecd649d0 39
mbed_official 623:db79ecd649d0 40 extern char Image$$RW_IRAM1$$ZI$$Limit[];
mbed_official 623:db79ecd649d0 41
mbed_official 623:db79ecd649d0 42 extern __value_in_regs struct __initial_stackheap __user_setup_stackheap(uint32_t R0, uint32_t R1, uint32_t R2, uint32_t R3) {
mbed_official 623:db79ecd649d0 43 uint32_t zi_limit = (uint32_t)Image$$RW_IRAM1$$ZI$$Limit;
mbed_official 623:db79ecd649d0 44 uint32_t sp_limit = __current_sp();
mbed_official 623:db79ecd649d0 45
mbed_official 623:db79ecd649d0 46 zi_limit = (zi_limit + 7) & ~0x7; // ensure zi_limit is 8-byte aligned
mbed_official 623:db79ecd649d0 47
mbed_official 623:db79ecd649d0 48 struct __initial_stackheap r;
mbed_official 623:db79ecd649d0 49 r.heap_base = zi_limit;
mbed_official 623:db79ecd649d0 50 r.heap_limit = sp_limit;
mbed_official 623:db79ecd649d0 51 return r;
mbed_official 623:db79ecd649d0 52 }
mbed_official 623:db79ecd649d0 53
mbed_official 623:db79ecd649d0 54 #ifdef __cplusplus
mbed_official 623:db79ecd649d0 55 }
mbed_official 623:db79ecd649d0 56 #endif