main.c

来自「AT91FR40162的闪灯子程序」· C语言 代码 · 共 31 行

// Parallel IO Interface
#define	PIO_PER		(*(volatile unsigned *)0xFFFF0000)				// PIO Enable Register
#define	PIO_OER		(*(volatile unsigned *)0xFFFF0010)		// PIO Output Enable Register
#define	PIO_SODR		(*(volatile unsigned *)0xFFFF0030)		// PIO Set Output Data Register
#define	PIO_CODR		(*(volatile unsigned *)0xFFFF0034)		// PIO Clear Output Data Register

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

int Main()
{
	PIO_PER=0xffffffff;
	PIO_OER=0xffffffff;  
		
	
	for(;;)
	{		
		PIO_CODR=0xffffffff;
		Delay(50);
		PIO_SODR=0xffffffff;
		Delay(50);
		
	}
	return (0);
}