main.c

ICETEK-VC5509-A 实验3.4 外中断实验

#include "myapp.h"
#include "ICETEK-VC5509-EDU.h"
#include "scancode.h"

// 液晶  ----------------------------------------------------------
#define CTRLED (*(unsigned int *)0x600802) // port8004
#define MCTRKEY (*(unsigned int *)0x602802)  // port8005
//#define CTRCLKEY (*(unsigned int *)0x600803) // port8006
#define CTRSTATUS (*(unsigned int *)0x600800) //port8000

void InitMcBSP();
void INTR_init( void );
void TIME_init(void);

int nCount;

main()
{
	nCount=0;
	nCount=*(int *)0x10000;
	asm(" nop ");
	PLL_Init(20);
	SDRAM_init();
	INTR_init();
	InitMcBSP();
	CTRSTATUS=0x80;
	CTRSTATUS=0;
	CTRSTATUS=0x80;
	CTRSTATUS=0;
	CTRLED=0xff;
	CTRGR=2;	// 使能IO
	//CTRCLKEY=0;
	while ( 1 )
	{
	}
}

void InitMcBSP()
{
	// IOPin: McBSP1.FSX S15  
	//SPCR2.XRST_=0,PCR.XIOEN=1,PCR.FSXM=1,PCR.FSXP=0/1
	SPCR2_1&=0x0fffe;
	PCR1|=0x2800;
}

void interrupt XINT()
{
	nCount++; nCount%=2;
	if ( nCount==0 )
		PCR1^=8;
	//CTRCLKEY=0;
}

void INTR_init( void )
{
	IVPD=0x80;
	IVPH=0x80;
	IER0=8;
	DBIER0=8;
	IFR0=0xffff;
	asm(" BCLR INTM");

}