LUFA/Drivers/USB/Core/UC3/USBController_UC3.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                 AVR32_USBB.USBCON.uide = false;
  73                 USB_CurrentMode = Mode;
  74         }
  75         #endif
  76
  77         USB_IsInitialized = true;
  78
  79         USB_ResetInterface();
  80 }
  81
  82 void USB_Disable(void)
  83 {
  84         USB_INT_DisableAllInterrupts();
  85         USB_INT_ClearAllInterrupts();
  86
  87         USB_Detach();
  88         USB_Controller_Disable();
  89
  90         USB_OTGPAD_Off();
  91
  92         #if defined(USB_CAN_BE_BOTH)
  93         USB_CurrentMode = USB_MODE_None;
  94         #endif
  95
  96         AVR32_PM.GCCTRL[3].cen = false;
  97
  98         USB_IsInitialized = false;
  99 }
 100
 101 void USB_ResetInterface(void)
 102 {
 103         #if defined(USB_CAN_BE_BOTH)
 104         bool UIDModeSelectEnabled = AVR32_USBB.USBCON.uide;
 105         #endif
 106
 107         AVR32_PM.GCCTRL[AVR32_PM_GCLK_USBB].pllsel = !(USB_Options & USB_OPT_GCLK_SRC_OSC);
 108         AVR32_PM.GCCTRL[AVR32_PM_GCLK_USBB].oscsel = !(USB_Options & USB_OPT_GCLK_CHANNEL_0);
 109         AVR32_PM.GCCTRL[AVR32_PM_GCLK_USBB].diven  = (F_CLOCK != USB_CLOCK_REQUIRED_FREQ);
 110         AVR32_PM.GCCTRL[AVR32_PM_GCLK_USBB].div    = (F_CLOCK == USB_CLOCK_REQUIRED_FREQ) ? 0 : (uint32_t)(((F_CLOCK / USB_CLOCK_REQUIRED_FREQ) - 1) / 2);
 111         AVR32_PM.GCCTRL[AVR32_PM_GCLK_USBB].cen    = true;
 112
 113         USB_INT_DisableAllInterrupts();
 114         USB_INT_ClearAllInterrupts();
 115
 116         USB_Controller_Reset();
 117
 118         #if defined(USB_CAN_BE_BOTH)
 119         if (UIDModeSelectEnabled)
 120         {
 121                 AVR32_USBB.USBCON.uide = true;
 122                 USB_INT_Enable(USB_INT_IDTI);
 123         }
 124         #endif
 125
 126         USB_CLK_Unfreeze();
 127
 128         if (USB_CurrentMode == USB_MODE_Device)
 129         {
 130                 #if defined(USB_CAN_BE_DEVICE)
 131                 AVR32_USBB.USBCON.uimod = true;
 132                 USB_Init_Device();
 133                 #endif
 134         }
 135         else if (USB_CurrentMode == USB_MODE_Host)
 136         {
 137                 #if defined(USB_CAN_BE_HOST)
 138                 AVR32_USBB.USBCON.uimod = false;
 139                 USB_Init_Host();
 140                 #endif
 141         }
 142
 143         USB_OTGPAD_On();
 144 }
 145
 146 #if defined(USB_CAN_BE_DEVICE)
 147 static void USB_Init_Device(void)
 148 {
 149         USB_DeviceState          = DEVICE_STATE_Unattached;
 150         USB_ConfigurationNumber  = 0;
 151
 152         #if !defined(NO_DEVICE_REMOTE_WAKEUP)
 153         USB_RemoteWakeupEnabled  = false;
 154         #endif
 155
 156         #if !defined(NO_DEVICE_SELF_POWER)
 157         USB_CurrentlySelfPowered = false;
 158         #endif
 159
 160         #if !defined(FIXED_CONTROL_ENDPOINT_SIZE)
 161         USB_Descriptor_Device_t* DeviceDescriptorPtr;
 162
 163         if (CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DeviceDescriptorPtr) != NO_DESCRIPTOR)
 164           USB_ControlEndpointSize = DeviceDescriptorPtr->Endpoint0Size;
 165         #endif
 166
 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_VBUSTI);
 173
 174         Endpoint_ConfigureEndpoint(ENDPOINT_CONTROLEP, EP_TYPE_CONTROL,
 175                                                            ENDPOINT_DIR_OUT, USB_ControlEndpointSize,
 176                                                            ENDPOINT_BANK_SINGLE);
 177
 178         USB_INT_Clear(USB_INT_SUSPI);
 179         USB_INT_Enable(USB_INT_SUSPI);
 180         USB_INT_Enable(USB_INT_EORSTI);
 181
 182         USB_Attach();
 183         USB_Device_SetDeviceAddress(0);
 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_On();
 196
 197         USB_INT_Enable(USB_INT_DCONNI);
 198         USB_INT_Enable(USB_INT_BCERRI);
 199
 200         USB_Attach();
 201 }
 202 #endif
 203