Projects/Webserver/USBHostMode.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2012.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2012  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 Host Mode management functions and variables. This file contains the LUFA code required to
  34  *  manage the USB RNDIS host mode.
  35  */
  36
  37 #include "USBHostMode.h"
  38
  39 /** LUFA RNDIS Class driver interface configuration and state information. This structure is
  40  *  passed to all RNDIS 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_RNDIS_Host_t Ethernet_RNDIS_Interface_Host =
  44         {
  45                 .Config =
  46                         {
  47                                 .DataINPipeNumber           = 1,
  48                                 .DataINPipeDoubleBank       = false,
  49
  50                                 .DataOUTPipeNumber          = 2,
  51                                 .DataOUTPipeDoubleBank      = false,
  52
  53                                 .NotificationPipeNumber     = 3,
  54                                 .NotificationPipeDoubleBank = false,
  55
  56                                 .HostMaxPacketSize          = UIP_CONF_BUFFER_SIZE,
  57                         },
  58         };
  59
  60
  61 /** USB host mode management task. This function manages the RNDIS Host class driver and uIP stack when the device is
  62  *  initialized in USB host mode.
  63  */
  64 void USBHostMode_USBTask(void)
  65 {
  66         if (USB_CurrentMode != USB_MODE_Host)
  67           return;
  68
  69         uIPManagement_ManageNetwork();
  70
  71         RNDIS_Host_USBTask(&Ethernet_RNDIS_Interface_Host);
  72 }
  73
  74 /** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
  75  *  starts the library USB task to begin the enumeration and USB management process.
  76  */
  77 void EVENT_USB_Host_DeviceAttached(void)
  78 {
  79         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
  80 }
  81
  82 /** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
  83  *  stops the library USB task management process.
  84  */
  85 void EVENT_USB_Host_DeviceUnattached(void)
  86 {
  87         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  88 }
  89
  90 /** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
  91  *  enumerated by the host and is now ready to be used by the application.
  92  */
  93 void EVENT_USB_Host_DeviceEnumerationComplete(void)
  94 {
  95         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
  96
  97         uint16_t ConfigDescriptorSize;
  98         uint8_t  ConfigDescriptorData[512];
  99
 100         if (USB_Host_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData,
 101                                                sizeof(ConfigDescriptorData)) != HOST_GETCONFIG_Successful)
 102         {
 103                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 104                 return;
 105         }
 106
 107         if (RNDIS_Host_ConfigurePipes(&Ethernet_RNDIS_Interface_Host,
 108                                       ConfigDescriptorSize, ConfigDescriptorData) != RNDIS_ENUMERROR_NoError)
 109         {
 110                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 111                 return;
 112         }
 113
 114         if (USB_Host_SetDeviceConfiguration(1) != HOST_SENDCONTROL_Successful)
 115         {
 116                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 117                 return;
 118         }
 119
 120         if (RNDIS_Host_InitializeDevice(&Ethernet_RNDIS_Interface_Host) != HOST_SENDCONTROL_Successful)
 121         {
 122                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 123                 USB_Host_SetDeviceConfiguration(0);
 124                 return;
 125         }
 126
 127         uint32_t PacketFilter = (REMOTE_NDIS_PACKET_DIRECTED | REMOTE_NDIS_PACKET_BROADCAST);
 128         if (RNDIS_Host_SetRNDISProperty(&Ethernet_RNDIS_Interface_Host, OID_GEN_CURRENT_PACKET_FILTER,
 129                                         &PacketFilter, sizeof(PacketFilter)) != HOST_SENDCONTROL_Successful)
 130         {
 131                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 132                 USB_Host_SetDeviceConfiguration(0);
 133                 return;
 134         }
 135
 136         if (RNDIS_Host_QueryRNDISProperty(&Ethernet_RNDIS_Interface_Host, OID_802_3_CURRENT_ADDRESS,
 137                                           &MACAddress, sizeof(MACAddress)) != HOST_SENDCONTROL_Successful)
 138         {
 139                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 140                 USB_Host_SetDeviceConfiguration(0);
 141                 return;
 142         }
 143
 144         /* Initialize uIP stack */
 145         uIPManagement_Init();
 146
 147         LEDs_SetAllLEDs(LEDMASK_USB_READY);
 148 }
 149
 150 /** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
 151 void EVENT_USB_Host_HostError(const uint8_t ErrorCode)
 152 {
 153         USB_Disable();
 154
 155         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 156         for(;;);
 157 }
 158
 159 /** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
 160  *  enumerating an attached USB device.
 161  */
 162 void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode, const uint8_t SubErrorCode)
 163 {
 164         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 165 }
 166