mled.c

来自「DSP原程序 有多个数据包 下载学习之用」· C语言 代码 · 共 47 行

ioport unsigned int port3002;

void Delay(int nDelay);
void ShiftToLeftAndRight(unsigned int nInit);

main()
{
	for(;;)
	{
		ShiftToLeftAndRight(1);
		ShiftToLeftAndRight(3);
		ShiftToLeftAndRight(7);
		ShiftToLeftAndRight(15);
	}
}

void Delay(int nDelay)
{
	int i,j,k;
	
	k=0;
	for ( i=0;i<nDelay;i++ )
		for ( j=0;j<16;j++ )
			k++;
}

void ShiftToLeftAndRight(unsigned int nInit)
{
	unsigned int uWork;
	int i;
	
	uWork=nInit;
	port3002=~uWork;
	for ( i=0;i<6;i++ )
	{
		Delay(256);
		uWork<<=1;
		port3002=~uWork;
	}
	for ( i=0;i<6;i++ )
	{
		Delay(256);
		uWork>>=1;
		port3002=~uWork;
	}
}