ledtest.c

瑞泰TMS320VC33目标板的串口通讯测试程序

#define BASE_ADDR	0x809fc0 

#define ERROR		*(int *)(BASE_ADDR+0)
#define INT0		*(int *)(BASE_ADDR+1)
#define INT1		*(int *)(BASE_ADDR+2)
#define INT2		*(int *)(BASE_ADDR+3)
#define INT3		*(int *)(BASE_ADDR+4)
#define XINT0		*(int *)(BASE_ADDR+5)
#define RINT0		*(int *)(BASE_ADDR+6)
#define TINT0		*(int *)(BASE_ADDR+9)
#define TINT1		*(int *)(BASE_ADDR+0xa)
#define DINT		*(int *)(BASE_ADDR+0xb)

#define T0CTL		*(int *)0x808020
#define T0CNT		*(int *)0x808024
#define T0PRD		*(int *)0x808028

cregister unsigned int IOF,IE,IF,ST;
interrupt void timer0(void);
int i,j,k;

main()
{
	i = 0;
	j = 0; 
	k = 0;  
	ERROR = 0;
	ST    = 0x6000; /* GIE=1; edge-triggered interrupts */
	IF    = 0;
	IE    = 0x100;  /* CPU timer0 interrupt enable */
	TINT0 = (int )timer0|0x60000000;
	T0CTL = 0x302;  /* TCLK as output pin; internal clock; external output 50% duty */
	T0PRD = 0xa000;
	T0CNT = 0;
	T0CTL = 0x3c2;  /* Timer resets and stars */
	ST    = 0x2000;
	
	for(;;)
	{
		if(j == 50 ) 
		{
			ST = 0x6000;  
			ERROR = 1;
			break;
		}
	}
	/* puts("led test end!\n"); */
}

interrupt void timer0(void)
{
	while(k == 300)
	{
		k = 0;
	  	if(i==0)
	  	{
	  		i = 1;
	  		IOF = 0x22; /* XFx output pin and XFx = 0 */
	  	}
	  	else
	  	{
	  		i = 0;
	  		IOF = 0x66; /* XFx output pin and XFx = 1 */
	  	}
	  	j++;
	}
	k++; 
}