iso.c

usblab usb程序开发实验 一个实例

/*
   //*************************************************************************
   //
   //                  P H I L I P S   P R O P R I E T A R Y
   //
   //           COPYRIGHT (c)   1997 BY PHILIPS SINGAPORE.
   //                     --  ALL RIGHTS RESERVED  --
   //
   // File Name:	TWAIN.C
   // Author:		Wenkai Du
   // Created:		18 Aug 98
   // Modified:
   // Revision:		1.0
   //
   //*************************************************************************
*/

#include <stdio.h>
#include <string.h>

#ifdef __C51__
	//#include <reg51.h>                /* special function register declarations   */
	#include "hardware.h"
#else
	#include <dos.h>
#endif

#include "d12ci.h"
#include "mainloop.h"
#include "usb100.h"
#include "chap_9.h"
#include "iso.h"

extern CONTROL_XFER ControlData;
extern IO_REQUEST idata ioRequest;
extern EPPFLAGS bEPPflags;

unsigned char c1,c2;

unsigned char IsoDisable =1;
unsigned char IsoMode = 0; //ISO_IN|ISO_OUT;
unsigned char IsoOutPattern=0xF0;
unsigned char IsoOutPktLen=0;
unsigned char IsoOutDataBuff[4];
unsigned char IsoInPattern=0xF8;
unsigned char IsoInPktLen=0;
unsigned char IsoInDataBuff[4];

void EnableIsoMode()
{
	if( ControlData.DeviceRequest.wLength == 0)
	{
		IsoMode &= ~ControlData.DeviceRequest.wIndex;
		IsoMode |= ControlData.DeviceRequest.wValue;

		printf("IsoMode %x\n",IsoMode );

		if(IsoMode&ISO_LOOP)
		{
		   IsoDisable =0;
		   IsoInPattern = 0;
		   IsoInPktLen = 17;
		   D12_SetEndpointStatus(5,0);
		   IsoOutPattern = 0;
		   IsoOutPktLen = 17;
		   D12_SetEndpointStatus(4,0);
		}
		else
		{
			 if(IsoMode&ISO_IN)
			 {
			   IsoDisable =0;


			   IsoInPattern = 0xf8;
			   IsoInPktLen = 17;
			   D12_SetEndpointStatus(5,0);

			   printf("Iso-In Pattern %x, PktLen %x\n",IsoInPattern,IsoInPktLen);
			   memset(IsoInDataBuff,IsoInPattern,IsoInPktLen );
			   D12_WriteEndpoint(5,IsoInDataBuff,IsoInPktLen);
			   IsoInPattern ++ ;

			   printf("Iso-In Pattern %x, PktLen %x\n",IsoInPattern,IsoInPktLen);
			   memset(IsoInDataBuff,IsoInPattern,IsoInPktLen );
			   D12_WriteEndpoint(5,IsoInDataBuff,IsoInPktLen);
			   IsoInPattern ++ ;

			 }

			 if(IsoMode&ISO_OUT)
			 {
			   IsoDisable =0;
			   IsoOutPattern = 0;
			   IsoOutPktLen = 17;
			   D12_SetEndpointStatus(4,0);
			 }

		}
		single_transmit(0, 0);

	}

	else
		stall_ep0();
}

#ifndef	__C51__
void Wait4Ns( unsigned long timeNs)
{
	unsigned long i;
	for(i=0; i<timeNs; i++)
		;
}
#endif