Projects/Incomplete/StandaloneProgrammer/DiskHost.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2011.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2011  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
  51 void DiskHost_USBTask(void)
  52 {
  53         if (USB_HostState == HOST_STATE_Addressed)
  54         {
  55                 LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
  56
  57                 uint16_t ConfigDescriptorSize;
  58                 uint8_t  ConfigDescriptorData[512];
  59
  60                 if (USB_Host_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData,
  61                                                                                            sizeof(ConfigDescriptorData)) != HOST_GETCONFIG_Successful)
  62                 {
  63                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  64                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
  65                         return;
  66                 }
  67
  68                 if (MS_Host_ConfigurePipes(&DiskHost_MS_Interface,
  69                                            ConfigDescriptorSize, ConfigDescriptorData) != MS_ENUMERROR_NoError)
  70                 {
  71                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  72                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
  73                         return;
  74                 }
  75
  76                 if (USB_Host_SetDeviceConfiguration(1) != HOST_SENDCONTROL_Successful)
  77                 {
  78                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  79                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
  80                         return;
  81                 }
  82
  83                 uint8_t MaxLUNIndex;
  84                 if (MS_Host_GetMaxLUN(&DiskHost_MS_Interface, &MaxLUNIndex))
  85                 {
  86                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  87                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
  88                         return;
  89                 }
  90
  91                 if (MS_Host_ResetMSInterface(&DiskHost_MS_Interface))
  92                 {
  93                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  94                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
  95                         return;
  96                 }
  97
  98                 USB_HostState = HOST_STATE_Configured;
  99
 100                 /* Note: For the RequestSense call to work, the host state machine must be in the
 101                  *       Configured state, or the call will be aborted */
 102                 SCSI_Request_Sense_Response_t SenseData;
 103                 if (MS_Host_RequestSense(&DiskHost_MS_Interface, 0, &SenseData) != 0)
 104                 {
 105                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 106                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
 107                         return;
 108                 }
 109
 110                 pf_mount(&DiskFATState);
 111
 112                 LEDs_SetAllLEDs(LEDMASK_USB_READY);
 113         }
 114
 115         MS_Host_USBTask(&DiskHost_MS_Interface);
 116 }
 117
 118 void EVENT_USB_Host_DeviceAttached(void)
 119 {
 120         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
 121 }
 122
 123 void EVENT_USB_Host_DeviceUnattached(void)
 124 {
 125         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 126 }
 127
 128 #endif
 129