LUFA/Drivers/USB/Core/UC3/USBController_UC3.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 #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         #else
  76         AVR32_USBB.USBCON.uide = false;
  77         #endif
  78
  79         USB_IsInitialized = true;
  80
  81         USB_ResetInterface();
  82 }
  83
  84 void USB_Disable(void)
  85 {
  86         USB_INT_DisableAllInterrupts();
  87         USB_INT_ClearAllInterrupts();
  88
  89         USB_Detach();
  90         USB_Controller_Disable();
  91
  92         USB_OTGPAD_Off();
  93
  94         #if defined(USB_CAN_BE_BOTH)
  95         USB_CurrentMode = USB_MODE_None;
  96         #endif
  97
  98         AVR32_PM.GCCTRL[3].cen = false;
  99
 100         USB_IsInitialized = false;
 101 }
 102
 103 void USB_ResetInterface(void)
 104 {
 105         #if defined(USB_CAN_BE_BOTH)
 106         bool UIDModeSelectEnabled = AVR32_USBB.USBCON.uide;
 107         #endif
 108
 109         AVR32_PM.GCCTRL[AVR32_PM_GCLK_USBB].pllsel = !(USB_Options & USB_OPT_GCLK_SRC_OSC);
 110         AVR32_PM.GCCTRL[AVR32_PM_GCLK_USBB].oscsel = !(USB_Options & USB_OPT_GCLK_CHANNEL_0);
 111         AVR32_PM.GCCTRL[AVR32_PM_GCLK_USBB].diven  = (F_USB != USB_CLOCK_REQUIRED_FREQ);
 112         AVR32_PM.GCCTRL[AVR32_PM_GCLK_USBB].div    = (F_USB == USB_CLOCK_REQUIRED_FREQ) ? 0 : (uint32_t)(((F_USB / USB_CLOCK_REQUIRED_FREQ) - 1) / 2);
 113         AVR32_PM.GCCTRL[AVR32_PM_GCLK_USBB].cen    = true;
 114
 115         USB_INT_DisableAllInterrupts();
 116         USB_INT_ClearAllInterrupts();
 117
 118         USB_Controller_Reset();
 119
 120         #if defined(USB_CAN_BE_BOTH)
 121         if (UIDModeSelectEnabled)
 122           USB_INT_Enable(USB_INT_IDTI);
 123         #endif
 124
 125         USB_CLK_Unfreeze();
 126
 127         if (USB_CurrentMode == USB_MODE_Device)
 128         {
 129                 #if defined(USB_CAN_BE_DEVICE)
 130                 AVR32_USBB.USBCON.uimod = true;
 131
 132                 USB_Init_Device();
 133                 #endif
 134         }
 135         else if (USB_CurrentMode == USB_MODE_Host)
 136         {
 137                 #if defined(INVERTED_VBUS_ENABLE_LINE)
 138                 AVR32_USBB.USBCON.vbuspol = true;
 139                 #endif
 140
 141                 #if defined(USB_CAN_BE_HOST)
 142                 AVR32_USBB.USBCON.uimod = false;
 143
 144                 USB_Init_Host();
 145                 #endif
 146         }
 147
 148         USB_OTGPAD_On();
 149 }
 150
 151 #if defined(USB_CAN_BE_DEVICE)
 152 static void USB_Init_Device(void)
 153 {
 154         USB_DeviceState                 = DEVICE_STATE_Unattached;
 155         USB_Device_ConfigurationNumber  = 0;
 156
 157         #if !defined(NO_DEVICE_REMOTE_WAKEUP)
 158         USB_Device_RemoteWakeupEnabled  = false;
 159         #endif
 160
 161         #if !defined(NO_DEVICE_SELF_POWER)
 162         USB_Device_CurrentlySelfPowered = false;
 163         #endif
 164
 165         #if !defined(FIXED_CONTROL_ENDPOINT_SIZE)
 166         USB_Descriptor_Device_t* DeviceDescriptorPtr;
 167
 168         if (CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DeviceDescriptorPtr) != NO_DESCRIPTOR)
 169           USB_Device_ControlEndpointSize = DeviceDescriptorPtr->Endpoint0Size;
 170         #endif
 171
 172         if (USB_Options & USB_DEVICE_OPT_LOWSPEED)
 173         {
 174                 USB_Device_SetLowSpeed();
 175         }
 176         else
 177         {
 178                 #if defined(USB_DEVICE_OPT_HIGHSPEED)
 179                 if (USB_Options & USB_DEVICE_OPT_HIGHSPEED)
 180                   USB_Device_SetHighSpeed();
 181                 else
 182                   USB_Device_SetFullSpeed();
 183                 #else
 184                 USB_Device_SetFullSpeed();
 185                 #endif
 186         }
 187
 188         USB_INT_Enable(USB_INT_VBUSTI);
 189
 190         Endpoint_ConfigureEndpoint(ENDPOINT_CONTROLEP, EP_TYPE_CONTROL,
 191                                                            ENDPOINT_DIR_OUT, USB_Device_ControlEndpointSize,
 192                                                            ENDPOINT_BANK_SINGLE);
 193
 194         USB_INT_Clear(USB_INT_SUSPI);
 195         USB_INT_Enable(USB_INT_SUSPI);
 196         USB_INT_Enable(USB_INT_EORSTI);
 197
 198         USB_Attach();
 199 }
 200 #endif
 201
 202 #if defined(USB_CAN_BE_HOST)
 203 static void USB_Init_Host(void)
 204 {
 205         USB_HostState                = HOST_STATE_Unattached;
 206         USB_Host_ConfigurationNumber = 0;
 207         USB_Host_ControlPipeSize     = PIPE_CONTROLPIPE_DEFAULT_SIZE;
 208
 209         USB_Host_HostMode_On();
 210
 211         USB_Host_VBUS_Auto_On();
 212
 213         USB_INT_Enable(USB_INT_DCONNI);
 214         USB_INT_Enable(USB_INT_BCERRI);
 215
 216         USB_Attach();
 217 }
 218 #endif
 219