LUFA/Drivers/USB/Core/XMEGA/USBController_XMEGA.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         USB_IsInitialized = true;
  64
  65         USB_ResetInterface();
  66 }
  67
  68 void USB_Disable(void)
  69 {
  70         USB_INT_DisableAllInterrupts();
  71         USB_INT_ClearAllInterrupts();
  72
  73         USB_Detach();
  74         USB_Controller_Disable();
  75
  76         USB_IsInitialized = false;
  77 }
  78
  79 void USB_ResetInterface(void)
  80 {
  81         USB_INT_DisableAllInterrupts();
  82         USB_INT_ClearAllInterrupts();
  83
  84         USB_Controller_Reset();
  85         USB_Init_Device();
  86 }
  87
  88 #if defined(USB_CAN_BE_DEVICE)
  89 static void USB_Init_Device(void)
  90 {
  91         USB_DeviceState                 = DEVICE_STATE_Unattached;
  92         USB_Device_ConfigurationNumber  = 0;
  93
  94         #if !defined(NO_DEVICE_REMOTE_WAKEUP)
  95         USB_Device_RemoteWakeupEnabled  = false;
  96         #endif
  97
  98         #if !defined(NO_DEVICE_SELF_POWER)
  99         USB_Device_CurrentlySelfPowered = false;
 100         #endif
 101
 102         #if !defined(FIXED_CONTROL_ENDPOINT_SIZE)
 103         USB_Descriptor_Device_t* DeviceDescriptorPtr;
 104
 105         #if defined(ARCH_HAS_MULTI_ADDRESS_SPACE) && \
 106             !(defined(USE_FLASH_DESCRIPTORS) || defined(USE_EEPROM_DESCRIPTORS) || defined(USE_RAM_DESCRIPTORS))
 107         uint8_t DescriptorAddressSpace;
 108
 109         if (CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DeviceDescriptorPtr, &DescriptorAddressSpace) != NO_DESCRIPTOR)
 110         {
 111                 if (DescriptorAddressSpace == MEMSPACE_FLASH)
 112                   USB_Device_ControlEndpointSize = pgm_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 113                 else if (DescriptorAddressSpace == MEMSPACE_EEPROM)
 114                   USB_Device_ControlEndpointSize = eeprom_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 115                 else
 116                   USB_Device_ControlEndpointSize = DeviceDescriptorPtr->Endpoint0Size;
 117         }
 118         #else
 119         if (CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DeviceDescriptorPtr) != NO_DESCRIPTOR)
 120         {
 121                 #if defined(USE_RAM_DESCRIPTORS)
 122                 USB_Device_ControlEndpointSize = DeviceDescriptorPtr->Endpoint0Size;
 123                 #elif defined(USE_EEPROM_DESCRIPTORS)
 124                 USB_Device_ControlEndpointSize = eeprom_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 125                 #else
 126                 USB_Device_ControlEndpointSize = pgm_read_byte(&DeviceDescriptorPtr->Endpoint0Size);
 127                 #endif
 128         }
 129         #endif
 130         #endif
 131
 132         if (USB_Options & USB_DEVICE_OPT_LOWSPEED)
 133           USB_Device_SetLowSpeed();
 134         else
 135           USB_Device_SetFullSpeed();
 136
 137         Endpoint_ConfigureEndpoint(ENDPOINT_CONTROLEP, EP_TYPE_CONTROL,
 138                                                            ENDPOINT_DIR_OUT, USB_Device_ControlEndpointSize,
 139                                                            ENDPOINT_BANK_SINGLE);
 140
 141         USB_Attach();
 142 }
 143 #endif