98 lines
2.1 KiB
C
98 lines
2.1 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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* 2010-02-04 Magicoe ported to LPC17xx
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* 2010-05-02 Aozima update CMSIS to 130
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*/
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#include <rthw.h>
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#include <rtthread.h>
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#include "uart.h"
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#include "board.h"
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#include "LPC177x_8x.h"
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#include "system_LPC177x_8x.h"
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#include "sdram.h"
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/**
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* @addtogroup LPC17xx
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*/
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/*@{*/
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/**
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* This is the timer interrupt service routine.
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*
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*/
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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 LPC17xx 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);
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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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/* initialize memory system */
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#ifdef __CC_ARM
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rt_system_heap_init((void*)&Image$$RW_IRAM1$$ZI$$Limit, (void*)(0x10000000 + 1024*64));
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#elif __ICCARM__
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rt_system_heap_init(__segment_end("HEAP"), (void*)(0x10000000 + 1024*64));
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#else
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rt_system_heap_init((void*)&__bss_end, (void*)(0x10000000 + 1024*64));
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#endif
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#endif
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/* USART driver initialization is open by default */
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#ifdef RT_USING_SERIAL
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rt_hw_usart_init();
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#endif
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/* Set the shell console output device */
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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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/* Board underlying hardware initialization */
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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 LPC_EXT_SDRAM == 1
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{
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SDRAM_Init();
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}
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#endif
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}
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/*@}*/
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