usb.c

来自「Philips D12usb的测试程序。D12是Philips针对USB的接口控」· C语言 代码 · 共 46 行

/*
 *	usb.c  --  demo of test usb chip_id application
 *	
 *	Author: 	li ming <[e-mail]>
 *	Date:		2004-11-1
 *	Copyright:	http://www.lumit.org
 */
 
#include "Usb.h"
#include <stdio.h>
 
void Delay( int t )
{
	int i, j;
	for( i = 0; i<t; i++ )
		for( j = 0; j < 2; j++ )
			;	 
	return;
}

void USBTest(void)
{
  unsigned short Data;

  printf("Start USB Test! \r\n");
  
  D12CmdPortOutB( 0xFD);  
  Data  = D12DataPortInB();
  Data += (D12DataPortInB() << 8);
  
  printf("Get USB D12 Chip ID: 0x%x \r\n",Data);  

  D12CmdPortOutB( 0xF3);
  D12DataPortOutB(D12_NOLAZYCLOCK);
  D12DataPortOutB(D12_SETTOONE | D12_CLOCK_12M);

  Delay(10000);

  printf("Ready to soft connect! \r\n");  
  D12CmdPortOutB( 0xF3);
  D12DataPortOutB(D12_NOLAZYCLOCK|D12_SOFTCONNECT);
  D12DataPortOutB(D12_SETTOONE | D12_CLOCK_12M);
  Delay(100000);
    
  printf("Finish USB Test! \r\n");
}