74 lines
1.5 KiB
C
74 lines
1.5 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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* 2014-06-20 xiaonong ported to LPC43xx
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*/
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#include <rthw.h>
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#include <rtthread.h>
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#include "board.h"
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#include "drv_uart.h"
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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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extern void SystemCoreClockUpdate(void);
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/**
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* This function will initial LPC43xx board.
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*/
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void rt_hw_board_init()
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{
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#ifdef CORE_M4
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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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#endif
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/* update the core clock */
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SystemCoreClockUpdate();
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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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/* init uart device */
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rt_hw_uart_init();
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/* setup the console device */
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rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
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#if LPC_EXT_SDRAM == 1
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lpc_sdram_hw_init();
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mpu_init();
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#endif
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}
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