62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
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/*
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* File : sram.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2015, RT-Thread Development Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Change Logs:
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* Date Author Notes
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* 2015-08-03 xiaonong The first version for STM32F7
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* 2017-08-25 LongfeiMa transplantation for stm32h7xx
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*/
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#include "sram.h"
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#include "board.h"
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#include <rtthread.h>
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#ifdef RT_USING_EXT_SDRAM
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struct rt_memheap system_heap;
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void sram_init(void)
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{
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/* initialize the built-in SRAM as a memory heap */
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rt_memheap_init(&system_heap,
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"system",
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(void *)HEAP_BEGIN,
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(rt_uint32_t)HEAP_END - (rt_uint32_t)HEAP_BEGIN);
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}
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void *sram_malloc(unsigned long size)
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{
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return rt_memheap_alloc(&system_heap, size);
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}
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RTM_EXPORT(sram_malloc);
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void sram_free(void *ptr)
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{
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rt_memheap_free(ptr);
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}
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RTM_EXPORT(sram_free);
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void *sram_realloc(void *ptr, unsigned long size)
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{
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return rt_memheap_realloc(&system_heap, ptr, size);
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}
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RTM_EXPORT(sram_realloc);
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#endif
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