LUFA/Drivers/USB/Core/UC3/USBInterrupt_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 #include "../USBInterrupt.h"
  33
  34 void USB_INT_DisableAllInterrupts(void)
  35 {
  36         AVR32_USBB.USBCON.vbuste     = false;
  37         AVR32_USBB.USBCON.idte       = false;
  38
  39         AVR32_USBB.uhinteclr         = -1;
  40         AVR32_USBB.udinteclr         = -1;
  41 }
  42
  43 void USB_INT_ClearAllInterrupts(void)
  44 {
  45         AVR32_USBB.USBSTACLR.vbustic = true;
  46         AVR32_USBB.USBSTACLR.idtic   = true;
  47
  48         AVR32_USBB.uhintclr          = -1;
  49         AVR32_USBB.udintclr          = -1;
  50 }
  51
  52 ISR(USB_GEN_vect)
  53 {
  54         #if defined(USB_CAN_BE_DEVICE)
  55         #if !defined(NO_SOF_EVENTS)
  56         if (USB_INT_HasOccurred(USB_INT_SOFI) && USB_INT_IsEnabled(USB_INT_SOFI))
  57         {
  58                 USB_INT_Clear(USB_INT_SOFI);
  59
  60                 EVENT_USB_Device_StartOfFrame();
  61         }
  62         #endif
  63
  64         if (USB_INT_HasOccurred(USB_INT_VBUSTI) && USB_INT_IsEnabled(USB_INT_VBUSTI))
  65         {
  66                 USB_INT_Clear(USB_INT_VBUSTI);
  67
  68                 if (USB_VBUS_GetStatus())
  69                 {
  70                         USB_DeviceState = DEVICE_STATE_Powered;
  71                         EVENT_USB_Device_Connect();
  72                 }
  73                 else
  74                 {
  75                         USB_DeviceState = DEVICE_STATE_Unattached;
  76                         EVENT_USB_Device_Disconnect();
  77                 }
  78         }
  79
  80         if (USB_INT_HasOccurred(USB_INT_SUSPI) && USB_INT_IsEnabled(USB_INT_SUSPI))
  81         {
  82                 USB_INT_Disable(USB_INT_SUSPI);
  83                 USB_INT_Enable(USB_INT_WAKEUPI);
  84
  85                 USB_CLK_Freeze();
  86
  87                 USB_DeviceState = DEVICE_STATE_Suspended;
  88                 EVENT_USB_Device_Suspend();
  89         }
  90
  91         if (USB_INT_HasOccurred(USB_INT_WAKEUPI) && USB_INT_IsEnabled(USB_INT_WAKEUPI))
  92         {
  93                 USB_CLK_Unfreeze();
  94
  95                 USB_INT_Clear(USB_INT_WAKEUPI);
  96
  97                 USB_INT_Disable(USB_INT_WAKEUPI);
  98                 USB_INT_Enable(USB_INT_SUSPI);
  99
 100                 if (USB_Device_ConfigurationNumber)
 101                   USB_DeviceState = DEVICE_STATE_Configured;
 102                 else
 103                   USB_DeviceState = (USB_Device_IsAddressSet()) ? DEVICE_STATE_Configured : DEVICE_STATE_Powered;
 104
 105                 EVENT_USB_Device_WakeUp();
 106         }
 107
 108         if (USB_INT_HasOccurred(USB_INT_EORSTI) && USB_INT_IsEnabled(USB_INT_EORSTI))
 109         {
 110                 USB_INT_Clear(USB_INT_EORSTI);
 111
 112                 USB_DeviceState                = DEVICE_STATE_Default;
 113                 USB_Device_ConfigurationNumber = 0;
 114
 115                 USB_INT_Clear(USB_INT_SUSPI);
 116                 USB_INT_Disable(USB_INT_SUSPI);
 117                 USB_INT_Enable(USB_INT_WAKEUPI);
 118
 119                 USB_Device_SetDeviceAddress(0);
 120                 Endpoint_ConfigureEndpoint(ENDPOINT_CONTROLEP, EP_TYPE_CONTROL,
 121                                            ENDPOINT_DIR_OUT, USB_Device_ControlEndpointSize,
 122                                            ENDPOINT_BANK_SINGLE);
 123
 124                 #if defined(INTERRUPT_CONTROL_ENDPOINT)
 125                 USB_INT_Enable(USB_INT_RXSTPI);
 126                 #endif
 127
 128                 EVENT_USB_Device_Reset();
 129         }
 130         #endif
 131
 132         #if defined(USB_CAN_BE_HOST)
 133         #if !defined(NO_SOF_EVENTS)
 134         if (USB_INT_HasOccurred(USB_INT_HSOFI) && USB_INT_IsEnabled(USB_INT_HSOFI))
 135         {
 136                 USB_INT_Clear(USB_INT_HSOFI);
 137
 138                 EVENT_USB_Host_StartOfFrame();
 139         }
 140         #endif
 141
 142         if (USB_INT_HasOccurred(USB_INT_DDISCI) && USB_INT_IsEnabled(USB_INT_DDISCI))
 143         {
 144                 USB_INT_Clear(USB_INT_DDISCI);
 145                 USB_INT_Clear(USB_INT_DCONNI);
 146                 USB_INT_Disable(USB_INT_DDISCI);
 147
 148                 EVENT_USB_Host_DeviceUnattached();
 149
 150                 USB_ResetInterface();
 151         }
 152
 153         if (USB_INT_HasOccurred(USB_INT_VBERRI) && USB_INT_IsEnabled(USB_INT_VBERRI))
 154         {
 155                 USB_INT_Clear(USB_INT_VBERRI);
 156
 157                 USB_Host_VBUS_Manual_Off();
 158                 USB_Host_VBUS_Auto_Off();
 159
 160                 EVENT_USB_Host_HostError(HOST_ERROR_VBusVoltageDip);
 161                 EVENT_USB_Host_DeviceUnattached();
 162
 163                 USB_HostState = HOST_STATE_Unattached;
 164         }
 165
 166         if (USB_INT_HasOccurred(USB_INT_DCONNI) && USB_INT_IsEnabled(USB_INT_DCONNI))
 167         {
 168                 USB_INT_Clear(USB_INT_DCONNI);
 169                 USB_INT_Disable(USB_INT_DCONNI);
 170
 171                 EVENT_USB_Host_DeviceAttached();
 172
 173                 USB_INT_Enable(USB_INT_DDISCI);
 174
 175                 USB_HostState = HOST_STATE_Powered;
 176         }
 177
 178         if (USB_INT_HasOccurred(USB_INT_BCERRI) && USB_INT_IsEnabled(USB_INT_BCERRI))
 179         {
 180                 USB_INT_Clear(USB_INT_BCERRI);
 181
 182                 EVENT_USB_Host_DeviceEnumerationFailed(HOST_ENUMERROR_NoDeviceDetected, 0);
 183                 EVENT_USB_Host_DeviceUnattached();
 184
 185                 USB_ResetInterface();
 186         }
 187         #endif
 188
 189         #if defined(USB_CAN_BE_BOTH)
 190         if (USB_INT_HasOccurred(USB_INT_IDTI) && USB_INT_IsEnabled(USB_INT_IDTI))
 191         {
 192                 USB_INT_Clear(USB_INT_IDTI);
 193
 194                 if (USB_DeviceState != DEVICE_STATE_Unattached)
 195                   EVENT_USB_Device_Disconnect();
 196
 197                 if (USB_HostState != HOST_STATE_Unattached)
 198                   EVENT_USB_Host_DeviceUnattached();
 199
 200                 USB_CurrentMode = USB_GetUSBModeFromUID();
 201                 USB_ResetInterface();
 202
 203                 EVENT_USB_UIDChange();
 204         }
 205         #endif
 206 }
 207
 208 #if defined(INTERRUPT_CONTROL_ENDPOINT) && defined(USB_CAN_BE_DEVICE)
 209 ISR(USB_COM_vect, ISR_BLOCK)
 210 {
 211         uint8_t PrevSelectedEndpoint = Endpoint_GetCurrentEndpoint();
 212
 213         Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
 214         USB_INT_Disable(USB_INT_RXSTPI);
 215
 216         GlobalInterruptEnable();
 217
 218         USB_Device_ProcessControlRequest();
 219
 220         Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
 221         USB_INT_Enable(USB_INT_RXSTPI);
 222         Endpoint_SelectEndpoint(PrevSelectedEndpoint);
 223 }
 224 #endif
 225