Projects/Incomplete/StandaloneProgrammer/DiskHost.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2010.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   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 #include "DiskHost.h"
  32
  33 #if defined(USB_CAN_BE_HOST)
  34 /** LUFA Mass Storage Class driver interface configuration and state information. This structure is
  35  *  passed to all Mass Storage Class driver functions, so that multiple instances of the same class
  36  *  within a device can be differentiated from one another.
  37  */
  38 USB_ClassInfo_MS_Host_t DiskHost_MS_Interface =
  39         {
  40                 .Config =
  41                         {
  42                                 .DataINPipeNumber       = 1,
  43                                 .DataINPipeDoubleBank   = false,
  44
  45                                 .DataOUTPipeNumber      = 2,
  46                                 .DataOUTPipeDoubleBank  = false,
  47                         },
  48         };
  49
  50 void DiskHost_USBTask(void)
  51 {
  52         if (USB_HostState == HOST_STATE_Addressed)
  53         {
  54                 LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
  55
  56                 uint16_t ConfigDescriptorSize;
  57                 uint8_t  ConfigDescriptorData[512];
  58
  59                 if (USB_Host_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData,
  60                                                                                            sizeof(ConfigDescriptorData)) != HOST_GETCONFIG_Successful)
  61                 {
  62                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  63                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
  64                         return;
  65                 }
  66
  67                 if (MS_Host_ConfigurePipes(&DiskHost_MS_Interface,
  68                                            ConfigDescriptorSize, ConfigDescriptorData) != MS_ENUMERROR_NoError)
  69                 {
  70                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  71                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
  72                         return;
  73                 }
  74
  75                 if (USB_Host_SetDeviceConfiguration(1) != HOST_SENDCONTROL_Successful)
  76                 {
  77                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  78                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
  79                         return;
  80                 }
  81
  82                 uint8_t MaxLUNIndex;
  83                 if (MS_Host_GetMaxLUN(&DiskHost_MS_Interface, &MaxLUNIndex))
  84                 {
  85                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  86                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
  87                         return;
  88                 }
  89
  90                 if (MS_Host_ResetMSInterface(&DiskHost_MS_Interface))
  91                 {
  92                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  93                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
  94                         return;
  95                 }
  96
  97                 USB_HostState = HOST_STATE_Configured;
  98
  99                 /* Note: For the RequestSense call to work, the host state machine must be in the
 100                  *       Configured state, or the call will be aborted */
 101                 SCSI_Request_Sense_Response_t SenseData;
 102                 if (MS_Host_RequestSense(&DiskHost_MS_Interface, 0, &SenseData) != 0)
 103                 {
 104                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 105                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
 106                         return;
 107                 }
 108
 109                 pf_mount(&DiskFATState);
 110
 111                 LEDs_SetAllLEDs(LEDMASK_USB_READY);
 112         }
 113
 114         MS_Host_USBTask(&DiskHost_MS_Interface);
 115 }
 116
 117 void EVENT_USB_Host_DeviceAttached(void)
 118 {
 119         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
 120 }
 121
 122 void EVENT_USB_Host_DeviceUnattached(void)
 123 {
 124         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 125 }
 126
 127 #endif
 128