Projects/Webserver/USBDeviceMode.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2010.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6       www.fourwalledcubicle.com
   7 */
   8
   9 /*
  10   Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, distribute, and sell this
  13   software and its documentation for any purpose is hereby granted
  14   without fee, provided that the above copyright notice appear in
  15   all copies and that both that the copyright notice and this
  16   permission notice and warranty disclaimer appear in supporting
  17   documentation, and that the name of the author not be used in
  18   advertising or publicity pertaining to distribution of the
  19   software without specific, written prior permission.
  20
  21   The author disclaim all warranties with regard to this
  22   software, including all implied warranties of merchantability
  23   and fitness.  In no event shall the author be liable for any
  24   special, indirect or consequential damages or any damages
  25   whatsoever resulting from loss of use, data or profits, whether
  26   in an action of contract, negligence or other tortious action,
  27   arising out of or in connection with the use or performance of
  28   this software.
  29 */
  30
  31 /** \file
  32  *
  33  *  USB Device Mode management functions and variables. This file contains the LUFA code required to
  34  *  manage the USB Mass Storage device mode.
  35  */
  36
  37 #include "USBDeviceMode.h"
  38
  39 /** LUFA Mass Storage Class driver interface configuration and state information. This structure is
  40  *  passed to all Mass Storage Class driver functions, so that multiple instances of the same class
  41  *  within a device can be differentiated from one another.
  42  */
  43 USB_ClassInfo_MS_Device_t Disk_MS_Interface =
  44         {
  45                 .Config =
  46                         {
  47                                 .InterfaceNumber           = 0,
  48
  49                                 .DataINEndpointNumber      = MASS_STORAGE_IN_EPNUM,
  50                                 .DataINEndpointSize        = MASS_STORAGE_IO_EPSIZE,
  51                                 .DataINEndpointDoubleBank  = true,
  52
  53                                 .DataOUTEndpointNumber     = MASS_STORAGE_OUT_EPNUM,
  54                                 .DataOUTEndpointSize       = MASS_STORAGE_IO_EPSIZE,
  55                                 .DataOUTEndpointDoubleBank = true,
  56
  57                                 .TotalLUNs                 = 1,
  58                         },
  59         };
  60
  61
  62 /** USB device mode management task. This function manages the Mass Storage Device class driver when the device is
  63  *  initialized in USB device mode.
  64  */
  65 void USBDeviceMode_USBTask(void)
  66 {
  67         if (USB_CurrentMode != USB_MODE_DEVICE)
  68           return;
  69
  70         MS_Device_USBTask(&Disk_MS_Interface);
  71 }
  72
  73 /** Event handler for the library USB Connection event. */
  74 void EVENT_USB_Device_Connect(void)
  75 {
  76         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
  77 }
  78
  79 /** Event handler for the library USB Disconnection event. */
  80 void EVENT_USB_Device_Disconnect(void)
  81 {
  82         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  83 }
  84
  85 /** Event handler for the library USB Configuration Changed event. */
  86 void EVENT_USB_Device_ConfigurationChanged(void)
  87 {
  88         LEDs_SetAllLEDs(LEDMASK_USB_READY);
  89
  90         if (!(MS_Device_ConfigureEndpoints(&Disk_MS_Interface)))
  91           LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  92 }
  93
  94 /** Event handler for the library USB Unhandled Control Request event. */
  95 void EVENT_USB_Device_UnhandledControlRequest(void)
  96 {
  97         MS_Device_ProcessControlRequest(&Disk_MS_Interface);
  98 }
  99
 100 /** Mass Storage class driver callback function the reception of SCSI commands from the host, which must be processed.
 101  *
 102  *  \param[in] MSInterfaceInfo  Pointer to the Mass Storage class interface configuration structure being referenced
 103  */
 104 bool CALLBACK_MS_Device_SCSICommandReceived(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo)
 105 {
 106         bool CommandSuccess;
 107
 108         LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
 109         CommandSuccess = SCSI_DecodeSCSICommand(MSInterfaceInfo);
 110         LEDs_SetAllLEDs(LEDMASK_USB_READY);
 111
 112         return CommandSuccess;
 113 }