LUFA/Drivers/USB/HighLevel/USBInterrupt.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2009.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6       www.fourwalledcubicle.com
   7 */
   8
   9 /*
  10   Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, and distribute this software
  13   and its documentation for any purpose and without fee is hereby
  14   granted, provided that the above copyright notice appear in all
  15   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 #include "../LowLevel/USBMode.h"
  32 #include "USBInterrupt.h"
  33
  34 void USB_INT_DisableAllInterrupts(void)
  35 {
  36         #if defined(USB_FULL_CONTROLLER)
  37         USBCON &= ~((1 << VBUSTE) | (1 << IDTE));
  38         #elif defined(USB_MODIFIED_FULL_CONTROLLER)
  39         USBCON &= ~(1 << VBUSTE);
  40         #endif
  41
  42         #if defined(USB_CAN_BE_HOST)
  43         UHIEN   = 0;
  44         OTGIEN  = 0;
  45         #endif
  46
  47         #if defined(USB_CAN_BE_DEVICE)
  48         UDIEN   = 0;
  49         #endif
  50 }
  51
  52 void USB_INT_ClearAllInterrupts(void)
  53 {
  54         #if defined(USB_FULL_CONTROLLER) || defined(USB_MODIFIED_FULL_CONTROLLER)
  55         USBINT  = 0;
  56         #endif
  57
  58         #if defined(USB_CAN_BE_HOST)
  59         UHINT   = 0;
  60         OTGINT  = 0;
  61         #endif
  62
  63         #if defined(USB_CAN_BE_DEVICE)
  64         UDINT   = 0;
  65         #endif
  66 }
  67
  68 ISR(USB_GEN_vect, ISR_BLOCK)
  69 {
  70         #if defined(USB_CAN_BE_DEVICE)
  71         #if defined(USB_FULL_CONTROLLER) || defined(USB_MODIFIED_FULL_CONTROLLER)
  72         if (USB_INT_HasOccurred(USB_INT_VBUS) && USB_INT_IsEnabled(USB_INT_VBUS))
  73         {
  74                 USB_INT_Clear(USB_INT_VBUS);
  75
  76                 RAISE_EVENT(USB_VBUSChange);
  77
  78                 if (USB_VBUS_GetStatus())
  79                 {
  80                         RAISE_EVENT(USB_VBUSConnect);
  81
  82                         if (USB_IsConnected)
  83                           RAISE_EVENT(USB_Disconnect);
  84
  85                         USB_ResetInterface();
  86
  87                         USB_IsConnected = true;
  88
  89                         RAISE_EVENT(USB_Connect);
  90                 }
  91                 else
  92                 {
  93                         RAISE_EVENT(USB_Disconnect);
  94
  95                         USB_Detach();
  96                         USB_CLK_Freeze();
  97                         USB_PLL_Off();
  98                         USB_REG_Off();
  99
 100                         USB_IsConnected = false;
 101
 102                         RAISE_EVENT(USB_VBUSDisconnect);
 103
 104                         USB_INT_Clear(USB_INT_VBUS);
 105                 }
 106         }
 107         #endif
 108
 109         if (USB_INT_HasOccurred(USB_INT_SUSPEND) && USB_INT_IsEnabled(USB_INT_SUSPEND))
 110         {
 111                 USB_INT_Clear(USB_INT_SUSPEND);
 112
 113                 USB_INT_Disable(USB_INT_SUSPEND);
 114                 USB_INT_Enable(USB_INT_WAKEUP);
 115
 116                 USB_CLK_Freeze();
 117
 118                 if (!(USB_Options & USB_OPT_MANUAL_PLL))
 119                   USB_PLL_Off();
 120
 121                 USB_IsSuspended = true;
 122
 123                 RAISE_EVENT(USB_Suspend);
 124
 125                 #if defined(USB_LIMITED_CONTROLLER) && !defined(NO_LIMITED_CONTROLLER_CONNECT)
 126                 if (USB_IsConnected)
 127                 {
 128                         USB_IsConnected = false;
 129                         RAISE_EVENT(USB_Disconnect);
 130                 }
 131                 #endif
 132         }
 133
 134         if (USB_INT_HasOccurred(USB_INT_WAKEUP) && USB_INT_IsEnabled(USB_INT_WAKEUP))
 135         {
 136                 if (!(USB_Options & USB_OPT_MANUAL_PLL))
 137                 {
 138                         USB_PLL_On();
 139                         while (!(USB_PLL_IsReady()));
 140                 }
 141
 142                 USB_CLK_Unfreeze();
 143
 144                 USB_INT_Clear(USB_INT_WAKEUP);
 145
 146                 USB_INT_Disable(USB_INT_WAKEUP);
 147                 USB_INT_Enable(USB_INT_SUSPEND);
 148
 149                 #if defined(USB_LIMITED_CONTROLLER) && !defined(NO_LIMITED_CONTROLLER_CONNECT)
 150                 if (!(USB_IsConnected))
 151                 {
 152                         USB_IsConnected = true;
 153                         RAISE_EVENT(USB_Connect);
 154                 }
 155                 #endif
 156
 157                 USB_IsSuspended = false;
 158
 159                 RAISE_EVENT(USB_WakeUp);
 160         }
 161
 162         if (USB_INT_HasOccurred(USB_INT_EORSTI) && USB_INT_IsEnabled(USB_INT_EORSTI))
 163         {
 164                 USB_INT_Clear(USB_INT_EORSTI);
 165
 166                 USB_ConfigurationNumber = 0;
 167
 168                 USB_INT_Clear(USB_INT_SUSPEND);
 169                 USB_INT_Disable(USB_INT_SUSPEND);
 170                 USB_INT_Enable(USB_INT_WAKEUP);
 171
 172                 Endpoint_ClearEndpoints();
 173
 174                 Endpoint_ConfigureEndpoint(ENDPOINT_CONTROLEP, EP_TYPE_CONTROL,
 175                                            ENDPOINT_DIR_OUT, USB_ControlEndpointSize,
 176                                            ENDPOINT_BANK_SINGLE);
 177
 178                 RAISE_EVENT(USB_Reset);
 179         }
 180         #endif
 181
 182         #if defined(USB_CAN_BE_HOST)
 183         if (USB_INT_HasOccurred(USB_INT_DDISCI) && USB_INT_IsEnabled(USB_INT_DDISCI))
 184         {
 185                 USB_INT_Clear(USB_INT_DDISCI);
 186                 USB_INT_Clear(USB_INT_DCONNI);
 187                 USB_INT_Disable(USB_INT_DDISCI);
 188
 189                 RAISE_EVENT(USB_DeviceUnattached);
 190                 RAISE_EVENT(USB_Disconnect);
 191
 192                 USB_ResetInterface();
 193         }
 194
 195         if (USB_INT_HasOccurred(USB_INT_VBERRI) && USB_INT_IsEnabled(USB_INT_VBERRI))
 196         {
 197                 USB_INT_Clear(USB_INT_VBERRI);
 198
 199                 USB_Host_VBUS_Manual_Off();
 200                 USB_Host_VBUS_Auto_Off();
 201
 202                 RAISE_EVENT(USB_HostError, HOST_ERROR_VBusVoltageDip);
 203                 RAISE_EVENT(USB_DeviceUnattached);
 204
 205                 USB_HostState = HOST_STATE_Unattached;
 206         }
 207
 208         if (USB_INT_HasOccurred(USB_INT_SRPI) && USB_INT_IsEnabled(USB_INT_SRPI))
 209         {
 210                 USB_INT_Clear(USB_INT_SRPI);
 211                 USB_INT_Disable(USB_INT_SRPI);
 212
 213                 RAISE_EVENT(USB_DeviceAttached);
 214
 215                 USB_INT_Enable(USB_INT_DDISCI);
 216
 217                 USB_HostState = HOST_STATE_Attached;
 218         }
 219
 220         if (USB_INT_HasOccurred(USB_INT_BCERRI) && USB_INT_IsEnabled(USB_INT_BCERRI))
 221         {
 222                 USB_INT_Clear(USB_INT_BCERRI);
 223
 224                 RAISE_EVENT(USB_DeviceEnumerationFailed, HOST_ENUMERROR_NoDeviceDetected, 0);
 225                 RAISE_EVENT(USB_DeviceUnattached);
 226
 227                 if (USB_IsConnected)
 228                   RAISE_EVENT(USB_Disconnect);
 229
 230                 USB_ResetInterface();
 231         }
 232         #endif
 233
 234         #if defined(USB_CAN_BE_BOTH)
 235         if (USB_INT_HasOccurred(USB_INT_IDTI) && USB_INT_IsEnabled(USB_INT_IDTI))
 236         {
 237                 USB_INT_Clear(USB_INT_IDTI);
 238
 239                 if (USB_IsConnected)
 240                 {
 241                         if (USB_CurrentMode == USB_MODE_HOST)
 242                           RAISE_EVENT(USB_DeviceUnattached);
 243                         else
 244                           RAISE_EVENT(USB_Disconnect);
 245                 }
 246
 247                 RAISE_EVENT(USB_UIDChange);
 248
 249                 USB_ResetInterface();
 250         }
 251         #endif
 252 }