board.c.svn-base

RT-Thread是发展中的下一代微内核嵌入式实时操作系统

/*
 * File      : board.c
 * This file is part of RT-Thread RTOS
 * COPYRIGHT (C) 2006, 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://openlab.rt-thread.com/license/LICENSE
 *
 * Change Logs:
 * Date           Author       Notes
 * 2006-09-06     XuXinming    first version
 */

#include <rtthread.h>
#include <rthw.h>

#include <s3c44b0.h>
#include "board.h"

/* #define BOARD_DEBUG */

#define DATA_COUNT	1000

static void rt_hw_port_init(void)
{
}

/**
 * @addtogroup sgps44b0
 */
/*@{*/

void rt_timer_handler(int vector)
{
#ifdef BOARD_DEBUG
	rt_kprintf("rt_timer_handler");
#endif

	rt_tick_increase();
}

/**
 * This function will init sgps44b0 board
 */
void rt_hw_board_init()
{
	/* setup port */
	rt_hw_port_init();
	
	/* set timer0 register */
	/* stop timer */
	TCON 	&= ~(0x00000001);

	/* prescaler setting, prescaler0 = 0x08 */
	TCFG0 	&= ~(0x000000ff);
	TCFG0 	|= ~(0x00000008);
	/* timer configuration register 0, divider = 1/8 */
	TCFG1 	&= ~(0x0000000f);
	TCFG1 	|= (0x00000002);

	TCNTB0 	= DATA_COUNT;
	TCMPB0 	= 0;

	/* manual update */
	TCON	|=0x00000002;

	/* auto reload on,output inverter off */
	TCON 	&= ~(0x0000000f);
	TCON 	|= (0x00000008);

	/* clear manual update */
	TCON	&= ~(0x00000002);

	/* install timer handler */
	rt_hw_interrupt_install(INT_TIMER0, rt_timer_handler, RT_NULL);
	rt_hw_interrupt_umask(INT_TIMER0);

	/* start timer */
	TCON 	|=(0x00000001);
}

void rt_hw_led_set(rt_uint32 led)
{
}

/** 
 * flash the leds of board
 */
void rt_hw_led_flash(void)
{
}

#ifdef RT_USING_FINSH
extern void finsh_notify(void);
void rt_serial_isr(int vector)
{
	finsh_notify();
}

/** 
 * init the hardware related with finsh shell
 */
void rt_hw_finsh_init()
{
	/* install UART isr */
	rt_hw_interrupt_install(INT_URXD0, rt_serial_isr, RT_NULL);
	rt_hw_interrupt_umask(INT_URXD0);
}

#endif

/*@}*/