rt-thread/bsp/lpc176x/drivers/board.c

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2013-01-08 22:40:58 +08:00
/*
* Copyright (c) 2006-2018, RT-Thread Development Team
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*
* SPDX-License-Identifier: Apache-2.0
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*
* Change Logs:
* Date Author Notes
* 2009-01-05 Bernard first implementation
* 2010-02-04 Magicoe ported to LPC17xx
* 2010-05-02 Aozima update CMSIS to 130
*/
#include <rthw.h>
#include <rtthread.h>
#include "uart.h"
#include "board.h"
#include "LPC17xx.h"
/**
* @addtogroup LPC17xx
*/
/*@{*/
/**
* This is the timer interrupt service routine.
*
*/
void rt_hw_timer_handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
rt_tick_increase();
/* leave interrupt */
rt_interrupt_leave();
}
void SysTick_Handler(void)
{
rt_hw_timer_handler();
}
/**
* This function will initial LPC17xx board.
*/
void rt_hw_board_init()
{
/* 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
/* initialize systick */
SysTick_Config( SystemCoreClock/RT_TICK_PER_SECOND);
/* set pend exception priority */
NVIC_SetPriority(PendSV_IRQn, (1<<__NVIC_PRIO_BITS) - 1);
#ifdef RT_USING_UART0
rt_hw_uart_init();
rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
#endif
}
/*@}*/