usb

C8051F120与串口、并口、D12、USB、LCD应用

void Init_Switch()
{
	u8 page = SFRPAGE;
	SFRPAGE = 0xf;/ lect sfr page

	/* XBR0 control follow digital utils
	uart0:xbr0.2->p0.0,p0.1
	spi0:xbr0.1->p0.2,p0.3,p0.4,(p0.5)
	smb0:xbr0.0->p0.6,p0.7
	*/
	XBR0 = 0x07;

	/*XBR2 control follows
	UART1:xbr2.2->p1.0,p1.1
	*/
	XBR2 = 0x4;

	// set P1MDIN.2 to ADC2-in, skip p1.2 pin
	P1MDIN = 0xFB;

	/*XBR1 control follows
	T0:XBR1.1->p1.3
	INT0:XBR1.2->p1.4
	*/
	XBR1 = 0x06;
	//for test
//	P1MDOUT |= 0x10;
//	XBR1 |= 0x82;	//XBR1.7:sysclk->p1.4	


	//ENABLE switch 
	XBR2 |= XBARE;

	SFRPAGE = page;
}