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
 *                Triseel
 */
#include <rtthread.h>
#include <rthw.h>

#include <AT9200.h>
#include <Serial.h>

#define DATA_COUNT	0x147  /*calc by slow crystal*/

/*!
 * @addtogroup AT9200
 */
/*@{*/
static int SysIntKind=0;  /*sys int bmp*/

static void LEDInit(void)
{
	REG_OUT32(AT9200_PIOC_PER  , 0x00, LEDFLASHPORT);
	REG_OUT32(AT9200_PIOC_OER  , 0x00, LEDFLASHPORT);
	REG_OUT32(AT9200_PIOC_IFER , 0x00, LEDFLASHPORT);
	REG_OUT32(AT9200_PIOC_IDR  , 0x00, LEDFLASHPORT);
	REG_OUT32(AT9200_PIOC_PPUER, 0x00, LEDFLASHPORT);
	REG_OUT32(AT9200_PIOC_OWER , 0x00, LEDFLASHPORT);
	REG_OUT32(AT9200_PIOC_SODR , 0x00, LEDFLASHPORT);
}

void rt_timer_handler(int vector)
{
	register rt_uint32 RdVal;

	/*the following part are bsp relative*/
	RdVal=REG_IN32(AT9200_ST_SR, 0);  /*rd & clr status reg*/

	/*invoke OS func*/
	rt_tick_increase();
}

/*************************************************
** Implemented : Triseel
** Func Name   : rt_sysint_handler
** Comments    : handle 9200 sys multi ints
** Notes       : coz 9200 timer tick int shared with other int, so use this func replace the former rt_timer_handler
** Input  Args : 
**               argVec : sys int vec num
**                : 
** Output Args : 
**               none
** Rtn    Val  :  
**               none
*************************************************/
void rt_sysint_handler(int argVec)
{
	register rt_uint32 RegVal;

	/*timer tick*/
	if (  BMP_ISSET(SysIntKind, SYS_INT_ST_BIT)  /*can handle this int*/
		&&BMP_ISSET(REG_IN32(AT9200_ST_SR, 0), AT9200_ST_PITS_BIT)  )  /*rd reg to judge really the designated int is triggered*/
	{
		/*invoke OS func*/
		rt_tick_increase();
	}
#ifdef RT_USING_FINSH
	/*dbg UART*/
	if (  BMP_ISSET(SysIntKind, SYS_INT_DBGUART_BIT)  
		&&BMP_ISSET(REG_IN32(AT9200_BASE_DBGU, AT9200_UART_CSR_OFF), AT9200_US_RXRDY_BIT)  )
	{
		REG_OUT32(AT9200_BASE_DBGU, AT9200_UART_CR_OFF, AT9200_US_RSTRX_VAL);  /*rst the rx ctrl reg*/
		finsh_notify();
	}
#endif
}


/*************************************************
** Implemented : Triseel, Date : 
** Func Name   : rt_hw_board_init
** Comments    : This function will init Triseel9200 board
** Notes       : 
** Input  Args : 
**               none
** Output Args : 
**               none
** Rtn    Val  :  
**               none
*************************************************/
void rt_hw_board_init()
{
	register rt_uint32 RdVal;

	/*cfg timer as OS timer tick*/
	RdVal=REG_IN32(AT9200_ST_SR, 0);  /*rd & clr status reg*/
	REG_OUT32(AT9200_ST_IDR  , 0, 4);  /*disable timer int*/
	REG_OUT32(AT9200_ST_PIMR , 0, DATA_COUNT);  /*cfg interval classical 10ms, coz calc by slow clk, so dont need assign PMC*/
	REG_OUT32(AT9200_ST_RTAR , 0, 0);
	REG_OUT32(AT9200_ST_RTMR , 0, 1);
	REG_OUT32(AT9200_ST_IER  , 0, 1);  /*enable self int*/

	REG_OUT32(AT9200_AIC_SMR , SYS_VEC*4, 0x27);  /*int trigger mode & priority*/
	REG_OUT32(AT9200_AIC_SVR , SYS_VEC*4, rt_sysint_handler);  //--?--
	REG_OUT32(AT9200_AIC_ICCR, 0        , 1<<SYS_VEC);  /*clr AIC int*/
	REG_OUT32(AT9200_AIC_IECR, 0        , 1<<SYS_VEC);  /*enable AIC int*/

	/* install int handler & unmask immediately*/
	BMP_SET(SysIntKind, SYS_INT_ST_BIT);
	rt_hw_interrupt_install(SYS_VEC, rt_sysint_handler, RT_NULL);
	rt_hw_interrupt_umask(SYS_VEC);
	
	LEDInit();
}

void rt_hw_led_set(rt_uint32 led)
{
	if (led)  /*on*/
		REG_OUT32(AT9200_PIOC_CODR, 0x00, LEDFLASHPORT);  /*clr to let LED on*/
	else  /*off*/
		REG_OUT32(AT9200_PIOC_SODR, 0x00, LEDFLASHPORT);
}

void rt_hw_led_flash(void)
{
	unsigned int i, j;


	rt_hw_led_set(0);
	for (i=0;i<0xFFFF;i++)  j++;
	rt_hw_led_set(1);
	for (i=0;i<0xFFFF;i++)  j++;
}

#ifdef RT_USING_FINSH
extern void finsh_notify(void);
void rt_hw_finsh_init()
{
	/*init the cpu regs firstly*/
	REG_OUT32(AT9200_BASE_DBGU, AT9200_UART_IER_OFF, AT9200_US_RXRDY_BIT);  /*enable rx rdy int*/

	BMP_SET(SysIntKind, SYS_INT_DBGUART_BIT);
}
#endif
/*@}*/