gpio.c

ICETEK-VC5416-EDULab瑞泰创新科技5416开发板的实验源程序

/////////////////////////////////////////////////
//  Example For ICETEK-VC5416-EDU              //
//          CTR Version : V4                   //
//  Filename: GPIO.c                           //
//  Project : GPIO.pjt                         //
//  Version : 2.00                             //
//  Write by: Daniel Hawk                      //
//  Company : Realtimedsp Co.Ltd.              //
//                                             //
//  All Rights opened & no Onus  2005.06       //
/////////////////////////////////////////////////

#define SPSA0 *(unsigned int *)0x38
#define SPSD0 *(unsigned int *)0x39
#define REGISTERCLKMD (*(unsigned int *)0x58)

ioport unsigned char port8000;	
ioport unsigned char port8001;	
ioport unsigned char port8002;	
ioport unsigned char port8007;	

#define CTRGR        port8000
#define CTRKEY       port8001
#define CTRLCDCMDR   port8001
#define CTRLCDCR     port8002
#define CTRCLKEY     port8002
#define CTRLR        port8007

void Delay(unsigned int nTime);

main()
{
	unsigned int uWork;

	REGISTERCLKMD=0;
	CTRGR=0;
	CTRGR=0x80;
	CTRGR=2;
	CTRLR=0;			// 关闭东西方向的交通灯
	CTRLR=0x40;	// 关闭南北方向的交通灯
	uWork=CTRCLKEY;	// 清除键盘缓冲区

	SPSA0=1;	// 设置McBSP0的SPCR2控制寄存器
	uWork=SPSD0;
	uWork&=0xfffe;	// 标志XRST=0
	SPSD0=uWork;
	SPSA0=0x0e;	// 设置McBSP0的PCR1寄存器
	uWork=SPSD0;
	uWork|=0x2800;	// 设置：XIOEN=1 FSXM=1，使能通用I/O功能,FSX用于输出
	SPSD0=uWork;
	while ( 1 )
	{
		SPSA0=0x0e;	// 设置McBSP0的PCR1寄存器
		uWork=SPSD0;
		uWork|=0x2800;
		uWork^=0x8;	// FSXP=~FSXP，BFSX0引脚状态取反
		SPSD0=uWork;
		Delay(4096);
	}
}               

void Delay(unsigned int nDelay)
{
	int i,j,k=0;
	for ( i=0;i<nDelay;i++ )
		for ( j=0;j<64;j++ )
			k++;
}