LUFA/Drivers/USB/Core/UC3B/USBController_UC3B.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 #define  __INCLUDE_FROM_USB_DRIVER
  32 #define  __INCLUDE_FROM_USB_CONTROLLER_C
  33 #include "../USBController.h"
  34
  35 #if (!defined(USB_HOST_ONLY) && !defined(USB_DEVICE_ONLY))
  36 volatile uint8_t USB_CurrentMode = USB_MODE_None;
  37 #endif
  38
  39 #if !defined(USE_STATIC_OPTIONS)
  40 volatile uint8_t USB_Options;
  41 #endif
  42
  43 void USB_Init(
  44                #if defined(USB_CAN_BE_BOTH)
  45                const uint8_t Mode
  46                #endif
  47
  48                #if (defined(USB_CAN_BE_BOTH) && !defined(USE_STATIC_OPTIONS))
  49                ,
  50                #elif (!defined(USB_CAN_BE_BOTH) && defined(USE_STATIC_OPTIONS))
  51                void
  52                #endif
  53
  54                #if !defined(USE_STATIC_OPTIONS)
  55                const uint8_t Options
  56                #endif
  57                )
  58 {
  59         #if !defined(USE_STATIC_OPTIONS)
  60         USB_Options = Options;
  61         #endif
  62
  63         #if defined(USB_CAN_BE_BOTH)
  64         if (Mode == USB_MODE_UID)
  65         {
  66                 AVR32_USBB.USBCON.uide = true;
  67                 USB_INT_Enable(USB_INT_IDTI);
  68                 USB_CurrentMode = USB_GetUSBModeFromUID();
  69         }
  70         else
  71         {
  72                 USB_CurrentMode = Mode;
  73         }
  74         #endif
  75
  76         USB_IsInitialized = true;
  77
  78         USB_ResetInterface();
  79 }
  80
  81 void USB_Disable(void)
  82 {
  83         USB_INT_DisableAllInterrupts();
  84         USB_INT_ClearAllInterrupts();
  85
  86         USB_Detach();
  87         USB_Controller_Disable();
  88
  89         USB_OTGPAD_Off();
  90
  91         #if defined(USB_CAN_BE_BOTH)
  92         USB_CurrentMode = USB_MODE_None;
  93         #endif
  94
  95         USB_IsInitialized = false;
  96 }
  97
  98 void USB_ResetInterface(void)
  99 {
 100         #if defined(USB_CAN_BE_BOTH)
 101         bool UIDModeSelectEnabled = ((UHWCON & (1 << UIDE)) != 0);
 102         #endif
 103
 104         USB_INT_DisableAllInterrupts();
 105         USB_INT_ClearAllInterrupts();
 106
 107         USB_Controller_Reset();
 108
 109         #if defined(USB_CAN_BE_BOTH)
 110         if (UIDModeSelectEnabled)
 111         {
 112                 AVR32_USBB.USBCON.uide = true;
 113                 USB_INT_Enable(USB_INT_IDTI);
 114         }
 115         #endif
 116
 117         USB_CLK_Unfreeze();
 118
 119         if (USB_CurrentMode == USB_MODE_Device)
 120         {
 121                 #if defined(USB_CAN_BE_DEVICE)
 122                 AVR32_USBB.USBCON.uimod = true;
 123                 USB_Init_Device();
 124                 #endif
 125         }
 126         else if (USB_CurrentMode == USB_MODE_Host)
 127         {
 128                 #if defined(USB_CAN_BE_HOST)
 129                 AVR32_USBB.USBCON.uimod = false;
 130                 USB_Init_Host();
 131                 #endif
 132         }
 133
 134         USB_OTGPAD_On();
 135 }
 136
 137 #if defined(USB_CAN_BE_DEVICE)
 138 static void USB_Init_Device(void)
 139 {
 140         USB_DeviceState          = DEVICE_STATE_Unattached;
 141         USB_ConfigurationNumber  = 0;
 142
 143         #if !defined(NO_DEVICE_REMOTE_WAKEUP)
 144         USB_RemoteWakeupEnabled  = false;
 145         #endif
 146
 147         #if !defined(NO_DEVICE_SELF_POWER)
 148         USB_CurrentlySelfPowered = false;
 149         #endif
 150
 151         #if !defined(FIXED_CONTROL_ENDPOINT_SIZE)
 152         USB_Descriptor_Device_t* DeviceDescriptorPtr;
 153
 154         if (CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DeviceDescriptorPtr) != NO_DESCRIPTOR)
 155         {
 156                 #if defined(USE_RAM_DESCRIPTORS)
 157                 USB_ControlEndpointSize = DeviceDescriptorPtr->Endpoint0Size;
 158                 #elif defined(USE_EEPROM_DESCRIPTORS)
 159                 USB_ControlEndpointSize = eeprom_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 160                 #else
 161                 USB_ControlEndpointSize = pgm_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 162                 #endif
 163         }
 164         #endif
 165
 166         #if (defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR))
 167         if (USB_Options & USB_DEVICE_OPT_LOWSPEED)
 168           USB_Device_SetLowSpeed();
 169         else
 170           USB_Device_SetFullSpeed();
 171
 172         USB_INT_Enable(USB_INT_VBUS);
 173         #endif
 174
 175         Endpoint_ConfigureEndpoint(ENDPOINT_CONTROLEP, EP_TYPE_CONTROL,
 176                                                            ENDPOINT_DIR_OUT, USB_ControlEndpointSize,
 177                                                            ENDPOINT_BANK_SINGLE);
 178
 179         USB_INT_Clear(USB_INT_SUSPI);
 180         USB_INT_Enable(USB_INT_SUSPI);
 181         USB_INT_Enable(USB_INT_EORSTI);
 182
 183         USB_Attach();
 184 }
 185 #endif
 186
 187 #if defined(USB_CAN_BE_HOST)
 188 static void USB_Init_Host(void)
 189 {
 190         USB_HostState       = HOST_STATE_Unattached;
 191         USB_ControlPipeSize = PIPE_CONTROLPIPE_DEFAULT_SIZE;
 192
 193         USB_Host_HostMode_On();
 194
 195         USB_Host_VBUS_Auto_Off();
 196         USB_Host_VBUS_Manual_Enable();
 197         USB_Host_VBUS_Manual_On();
 198
 199         USB_INT_Enable(USB_INT_SRPI);
 200         USB_INT_Enable(USB_INT_BCERRI);
 201
 202         USB_Attach();
 203 }
 204 #endif
 205