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         #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(USB_CAN_BE_HOST)
 138                 AVR32_USBB.USBCON.uimod = false;
 139
 140                 USB_Init_Host();
 141                 #endif
 142         }
 143
 144         USB_OTGPAD_On();
 145 }
 146
 147 #if defined(USB_CAN_BE_DEVICE)
 148 static void USB_Init_Device(void)
 149 {
 150         USB_DeviceState          = DEVICE_STATE_Unattached;
 151         USB_ConfigurationNumber  = 0;
 152
 153         #if !defined(NO_DEVICE_REMOTE_WAKEUP)
 154         USB_RemoteWakeupEnabled  = false;
 155         #endif
 156
 157         #if !defined(NO_DEVICE_SELF_POWER)
 158         USB_CurrentlySelfPowered = false;
 159         #endif
 160
 161         #if !defined(FIXED_CONTROL_ENDPOINT_SIZE)
 162         USB_Descriptor_Device_t* DeviceDescriptorPtr;
 163
 164         if (CALLBACK_USB_GetDescriptor((DTYPE_Device << 8), 0, (void*)&DeviceDescriptorPtr) != NO_DESCRIPTOR)
 165           USB_ControlEndpointSize = DeviceDescriptorPtr->Endpoint0Size;
 166         #endif
 167
 168         if (USB_Options & USB_DEVICE_OPT_LOWSPEED)
 169           USB_Device_SetLowSpeed();
 170         else
 171           USB_Device_SetFullSpeed();
 172
 173         USB_INT_Enable(USB_INT_VBUSTI);
 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_On();
 196
 197         USB_INT_Enable(USB_INT_DCONNI);
 198         USB_INT_Enable(USB_INT_BCERRI);
 199
 200         USB_Attach();
 201 }
 202 #endif
 203