main.c

5502的一个TIMER0编辑代码

#include "myapp.h"

// 定义指示灯寄存器地址和寄存器类型
#define LBDS (*((unsigned int *)0x400005))

void INTR_init( void );
void TIMER_init(void);

int nCount;

main()
{
	nCount=0;
	CLK_init();
	initemif();
	LBDS=0xf;
	INTR_init();
	TIMER_init();
	while ( 1 )
	{
	}
}

void interrupt Timer()
{
	nCount++; nCount%=1000;
	if ( nCount==0 )
		LBDS^=1;
}

void INTR_init( void )
{
	IVPD=0x01;
	IVPH=0x01;
	IER0=0x10;
	DBIER0 =0x10;
	IFR0=0xffff;
	asm(" BCLR INTM");

}

void TIMER_init(void)
{
    ioport unsigned int *GPTCTL1_0;
    ioport unsigned int *GPTPRD1_0;
    ioport unsigned int *GPTGCTL1_0; 
    
    GPTCTL1_0  =  (unsigned int *)0x1010;
	GPTPRD1_0  =  (unsigned int *)0x100C;
	GPTGCTL1_0  =  (unsigned int *)0x1012;
	
    *GPTCTL1_0=0;
    *GPTPRD1_0=0x1000;
    *GPTGCTL1_0=0x3;
    *GPTCTL1_0=0x80;
}