69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
/*
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* Copyright (c) 2006-2021, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2009-01-05 Bernard first implementation
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*/
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#include <board.h>
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#if defined(BSP_USING_SDRAM) && defined(RT_USING_MEMHEAP_AS_HEAP)
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#include "drv_sdram.h"
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extern void rt_hw_sdram_init(void);
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static struct rt_memheap system_heap;
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#endif
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void SysTick_Handler(void)
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{
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/* enter interrupt */
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rt_interrupt_enter();
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rt_tick_increase();
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/* leave interrupt */
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rt_interrupt_leave();
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}
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/**
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* This function will initial LPC40xx board.
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*/
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void rt_hw_board_init()
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{
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/* NVIC Configuration */
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#define NVIC_VTOR_MASK 0x3FFFFF80
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#ifdef VECT_TAB_RAM
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/* Set the Vector Table base location at 0x10000000 */
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SCB->VTOR = (0x10000000 & NVIC_VTOR_MASK);
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#else /* VECT_TAB_FLASH */
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/* Set the Vector Table base location at 0x00000000 */
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SCB->VTOR = (0x00000000 & NVIC_VTOR_MASK);
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#endif
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/* init systick */
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SysTick_Config(SystemCoreClock / RT_TICK_PER_SECOND - 1);
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/* set pend exception priority */
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NVIC_SetPriority(PendSV_IRQn, (1 << __NVIC_PRIO_BITS) - 1);
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#ifdef RT_USING_HEAP
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#if defined(BSP_USING_SDRAM) && defined(RT_USING_MEMHEAP_AS_HEAP)
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rt_hw_sdram_init();
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rt_system_heap_init((void *)EXT_SDRAM_BEGIN, (void *)EXT_SDRAM_END);
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rt_memheap_init(&system_heap, "sdram", (void *)HEAP_BEGIN, ((rt_uint32_t)HEAP_END - (rt_uint32_t)HEAP_BEGIN));
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#else
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rt_system_heap_init((void *)HEAP_BEGIN, (void *)HEAP_END);
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#endif
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#endif /* RT_USING_HEAP */
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#ifdef RT_USING_COMPONENTS_INIT
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rt_components_board_init();
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#endif
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#if defined(RT_USING_CONSOLE) && defined(RT_USING_DEVICE)
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rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
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#endif
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}
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