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/*
* File : board.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2014 RT-Thread Develop Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2009-01-05 Bernard first implementation
* 2014-06-20 xiaonong ported to LPC43xx
*/
#include <rthw.h>
#include <rtthread.h>
#include "board.h"
#include "drv_uart.h"
/**
* This is the timer interrupt service routine.
*
*/
void SysTick_Handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
rt_tick_increase();
/* leave interrupt */
rt_interrupt_leave();
}
extern void SystemCoreClockUpdate(void);
/**
* This function will initial LPC43xx board.
*/
void rt_hw_board_init()
{
#ifdef CORE_M4
/* NVIC Configuration */
#define NVIC_VTOR_MASK 0x3FFFFF80
#ifdef VECT_TAB_RAM
/* Set the Vector Table base location at 0x10000000 */
SCB->VTOR = (0x10000000 & NVIC_VTOR_MASK);
#else /* VECT_TAB_FLASH */
/* Set the Vector Table base location at 0x00000000 */
SCB->VTOR = (0x00000000 & NVIC_VTOR_MASK);
#endif
#endif
/* update the core clock */
SystemCoreClockUpdate();
/* init systick */
SysTick_Config(SystemCoreClock / RT_TICK_PER_SECOND - 1);
/* set pend exception priority */
NVIC_SetPriority(PendSV_IRQn, (1 << __NVIC_PRIO_BITS) - 1);
/* init uart device */
rt_hw_uart_init();
/* setup the console device */
rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
#if LPC_EXT_SDRAM == 1
lpc_sdram_hw_init();
mpu_init();
#endif
}
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