////  $Id: usbmass.c 42 2008-10-04 18:40:36Z jcw $//  $Revision: 42 $//  $Author: jcw $//  $Date: 2008-10-04 14:40:36 -0400 (Sat, 04 Oct 2008) $//  $HeadURL: http://tinymicros.com/svn_public/arm/lpc2148_demo/trunk/usbmass/usbmass.c $///*	LPCUSB, an USB device driver for LPC microcontrollers		Copyright (C) 2006 Bertrik Sikken (bertrik@sikken.nl)	Redistribution and use in source and binary forms, with or without	modification, are permitted provided that the following conditions are met:	1. Redistributions of source code must retain the above copyright	   notice, this list of conditions and the following disclaimer.	2. Redistributions in binary form must reproduce the above copyright	   notice, this list of conditions and the following disclaimer in the	   documentation and/or other materials provided with the distribution.	3. The name of the author may not be used to endorse or promote products	   derived from this software without specific prior written permission.	THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 	INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.*/#include "FreeRTOS.h"#include "../usb/usbapi.h"#include "../fatfs/disk.h"#include "mscdebug.h"#include "mscbot.h"#include "usbmass.h"//////#define MAX_PACKET_SIZE	64#define LE_WORD(x) ((x) & 0xff), ((x) >> 8)//////static U8 abClassReqData [4];static const U8 abDescriptors [] = {  //  //  Device descriptor	  //  0x12,  DESC_DEVICE,			  LE_WORD(0x0200),		// bcdUSB  0x00,					      // bDeviceClass  0x00,					      // bDeviceSubClass  0x00,					      // bDeviceProtocol  MAX_PACKET_SIZE0,		// bMaxPacketSize  LE_WORD(0xFFFF),		// idVendor  LE_WORD(0x0003),		// idProduct  LE_WORD(0x0100),		// bcdDevice  0x01,					      // iManufacturer  0x02,					      // iProduct  0x03,					      // iSerialNumber  0x01,					      // bNumConfigurations  //  //  Configuration descriptor  //  0x09,  DESC_CONFIGURATION,  LE_WORD(32),			// wTotalLength  0x01,					// bNumInterfaces  0x01,					// bConfigurationValue  0x00,					// iConfiguration  0xC0,					// bmAttributes  0x32,					// bMaxPower  //  //  Interface  //  0x09,  DESC_INTERFACE,  0x00,					// bInterfaceNumber  0x00,					// bAlternateSetting  0x02,					// bNumEndPoints  0x08,					// bInterfaceClass = mass storage  0x06,					// bInterfaceSubClass = transparent SCSI  0x50,					// bInterfaceProtocol = BOT  0x00,					// iInterface  //  //  EP  //  0x07,  DESC_ENDPOINT,  MSC_BULK_IN_EP,			      // bEndpointAddress  0x02,					            // bmAttributes = bulk  LE_WORD(MAX_PACKET_SIZE), // wMaxPacketSize  0x00,					            // bInterval  //  //  EP  //  0x07,  DESC_ENDPOINT,  MSC_BULK_OUT_EP,		      // bEndpointAddress  0x02,					            // bmAttributes = bulk  LE_WORD(MAX_PACKET_SIZE), // wMaxPacketSize  0x00,					            // bInterval  //  //  String descriptors  //  0x04,  DESC_STRING,  LE_WORD(0x0409),  0x0E,  DESC_STRING,  'L', 0, 'P', 0, 'C', 0, 'U', 0, 'S', 0, 'B', 0,  0x12,  DESC_STRING,  'P', 0, 'r', 0, 'o', 0, 'd', 0, 'u', 0, 'c', 0, 't', 0, 'X', 0,  0x1A,  DESC_STRING,  'D', 0, 'E', 0, 'A', 0, 'D', 0, 'C', 0, '0', 0, 'D', 0, 'E', 0, 'C', 0, 'A', 0, 'F', 0, 'E', 0,  // terminating zero  0};//////static BOOL usbmassHandleClassRequest (TSetupPacket *pSetup, int *piLen, U8 **ppbData){  if (pSetup->wIndex != 0)  {    DBG ("Invalid idx %X\n", pSetup->wIndex);    return FALSE;  }  if (pSetup->wValue != 0)  {    DBG ("Invalid val %X\n", pSetup->wValue);    return FALSE;  }  switch (pSetup->bRequest)   {    //    //  Get max LUN (always return no LUNs)    //    case 0xfe:      {        *ppbData [0] = 0;        *piLen = 1;      }      break;    //    //  MSC reset    //    case 0xff:      {        if (pSetup->wLength > 0)          return FALSE;        mscbotReset ();      }      break;    default:      {        DBG ("Unhandled class\n");      }      return FALSE;  }  return TRUE;}//////void usbmassInit (void){  portENTER_CRITICAL ();  DSTATUS d;  if ((d = diskInitialize (0)) != DRESULT_OK)    diskErrorText (d);  else  {    usbRegisterHandlers ();    usbRegisterDescriptors (abDescriptors);    usbRegisterRequestHandler (REQTYPE_TYPE_CLASS, usbmassHandleClassRequest, abClassReqData);    usbHardwareRegisterEPIntHandler (MSC_BULK_IN_EP, mscbotBulkIn);    usbHardwareRegisterEPIntHandler (MSC_BULK_OUT_EP, mscbotBulkOut);    usbHardwareNakIntEnable (INACK_BI);    usbSetupInterruptHandler ();  }  portEXIT_CRITICAL ();  usbHardwareConnect (TRUE);  DBG ("exiting usbmassInit()...\n");}