LUFA/Drivers/USB/Core/AVR8/USBInterrupt_AVR8.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         #if defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
  37         USBCON &= ~((1 << VBUSTE) | (1 << IDTE));
  38         #elif defined(USB_SERIES_4_AVR)
  39         USBCON &= ~(1 << VBUSTE);
  40         #endif
  41
  42         #if defined(USB_CAN_BE_BOTH)
  43         OTGIEN  = 0;
  44         #endif
  45
  46         #if defined(USB_CAN_BE_HOST)
  47         UHIEN   = 0;
  48         #endif
  49
  50         #if defined(USB_CAN_BE_DEVICE)
  51         UDIEN   = 0;
  52         #endif
  53 }
  54
  55 void USB_INT_ClearAllInterrupts(void)
  56 {
  57         #if defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
  58         USBINT = 0;
  59         #endif
  60
  61         #if defined(USB_CAN_BE_BOTH)
  62         OTGINT = 0;
  63         #endif
  64
  65         #if defined(USB_CAN_BE_HOST)
  66         UHINT  = 0;
  67         #endif
  68
  69         #if defined(USB_CAN_BE_DEVICE)
  70         UDINT  = 0;
  71         #endif
  72 }
  73
  74 ISR(USB_GEN_vect, ISR_BLOCK)
  75 {
  76         #if defined(USB_CAN_BE_DEVICE)
  77         #if !defined(NO_SOF_EVENTS)
  78         if (USB_INT_HasOccurred(USB_INT_SOFI) && USB_INT_IsEnabled(USB_INT_SOFI))
  79         {
  80                 USB_INT_Clear(USB_INT_SOFI);
  81
  82                 EVENT_USB_Device_StartOfFrame();
  83         }
  84         #endif
  85
  86         #if defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
  87         if (USB_INT_HasOccurred(USB_INT_VBUSTI) && USB_INT_IsEnabled(USB_INT_VBUSTI))
  88         {
  89                 USB_INT_Clear(USB_INT_VBUSTI);
  90
  91                 if (USB_VBUS_GetStatus())
  92                 {
  93                         if (!(USB_Options & USB_OPT_MANUAL_PLL))
  94                         {
  95                                 USB_PLL_On();
  96                                 while (!(USB_PLL_IsReady()));
  97                         }
  98
  99                         USB_DeviceState = DEVICE_STATE_Powered;
 100                         EVENT_USB_Device_Connect();
 101                 }
 102                 else
 103                 {
 104                         if (!(USB_Options & USB_OPT_MANUAL_PLL))
 105                           USB_PLL_Off();
 106
 107                         USB_DeviceState = DEVICE_STATE_Unattached;
 108                         EVENT_USB_Device_Disconnect();
 109                 }
 110         }
 111         #endif
 112
 113         if (USB_INT_HasOccurred(USB_INT_SUSPI) && USB_INT_IsEnabled(USB_INT_SUSPI))
 114         {
 115                 USB_INT_Clear(USB_INT_SUSPI);
 116
 117                 USB_INT_Disable(USB_INT_SUSPI);
 118                 USB_INT_Enable(USB_INT_WAKEUPI);
 119
 120                 USB_CLK_Freeze();
 121
 122                 if (!(USB_Options & USB_OPT_MANUAL_PLL))
 123                   USB_PLL_Off();
 124
 125                 #if defined(USB_SERIES_2_AVR) && !defined(NO_LIMITED_CONTROLLER_CONNECT)
 126                 USB_DeviceState = DEVICE_STATE_Unattached;
 127                 EVENT_USB_Device_Disconnect();
 128                 #else
 129                 USB_DeviceState = DEVICE_STATE_Suspended;
 130                 EVENT_USB_Device_Suspend();
 131                 #endif
 132         }
 133
 134         if (USB_INT_HasOccurred(USB_INT_WAKEUPI) && USB_INT_IsEnabled(USB_INT_WAKEUPI))
 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_WAKEUPI);
 145
 146                 USB_INT_Disable(USB_INT_WAKEUPI);
 147                 USB_INT_Enable(USB_INT_SUSPI);
 148
 149                 if (USB_ConfigurationNumber)
 150                   USB_DeviceState = DEVICE_STATE_Configured;
 151                 else
 152                   USB_DeviceState = (USB_Device_IsAddressSet()) ? DEVICE_STATE_Configured : DEVICE_STATE_Powered;
 153
 154                 #if defined(USB_SERIES_2_AVR) && !defined(NO_LIMITED_CONTROLLER_CONNECT)
 155                 EVENT_USB_Device_Connect();
 156                 #else
 157                 EVENT_USB_Device_WakeUp();
 158                 #endif
 159         }
 160
 161         if (USB_INT_HasOccurred(USB_INT_EORSTI) && USB_INT_IsEnabled(USB_INT_EORSTI))
 162         {
 163                 USB_INT_Clear(USB_INT_EORSTI);
 164
 165                 USB_DeviceState         = DEVICE_STATE_Default;
 166                 USB_ConfigurationNumber = 0;
 167
 168                 USB_INT_Clear(USB_INT_SUSPI);
 169                 USB_INT_Disable(USB_INT_SUSPI);
 170                 USB_INT_Enable(USB_INT_WAKEUPI);
 171
 172                 Endpoint_ConfigureEndpoint(ENDPOINT_CONTROLEP, EP_TYPE_CONTROL,
 173                                            ENDPOINT_DIR_OUT, USB_ControlEndpointSize,
 174                                            ENDPOINT_BANK_SINGLE);
 175
 176                 #if defined(INTERRUPT_CONTROL_ENDPOINT)
 177                 USB_INT_Enable(USB_INT_RXSTPI);
 178                 #endif
 179
 180                 EVENT_USB_Device_Reset();
 181         }
 182         #endif
 183
 184         #if defined(USB_CAN_BE_HOST)
 185         #if !defined(NO_SOF_EVENTS)
 186         if (USB_INT_HasOccurred(USB_INT_HSOFI) && USB_INT_IsEnabled(USB_INT_HSOFI))
 187         {
 188                 USB_INT_Clear(USB_INT_HSOFI);
 189
 190                 EVENT_USB_Host_StartOfFrame();
 191         }
 192         #endif
 193
 194         if (USB_INT_HasOccurred(USB_INT_DDISCI) && USB_INT_IsEnabled(USB_INT_DDISCI))
 195         {
 196                 USB_INT_Clear(USB_INT_DDISCI);
 197                 USB_INT_Clear(USB_INT_DCONNI);
 198                 USB_INT_Disable(USB_INT_DDISCI);
 199
 200                 EVENT_USB_Host_DeviceUnattached();
 201
 202                 USB_ResetInterface();
 203         }
 204
 205         if (USB_INT_HasOccurred(USB_INT_VBERRI) && USB_INT_IsEnabled(USB_INT_VBERRI))
 206         {
 207                 USB_INT_Clear(USB_INT_VBERRI);
 208
 209                 USB_Host_VBUS_Manual_Off();
 210                 USB_Host_VBUS_Auto_Off();
 211
 212                 EVENT_USB_Host_HostError(HOST_ERROR_VBusVoltageDip);
 213                 EVENT_USB_Host_DeviceUnattached();
 214
 215                 USB_HostState = HOST_STATE_Unattached;
 216         }
 217
 218         if (USB_INT_HasOccurred(USB_INT_SRPI) && USB_INT_IsEnabled(USB_INT_SRPI))
 219         {
 220                 USB_INT_Clear(USB_INT_SRPI);
 221                 USB_INT_Disable(USB_INT_SRPI);
 222
 223                 EVENT_USB_Host_DeviceAttached();
 224
 225                 USB_INT_Enable(USB_INT_DDISCI);
 226
 227                 USB_HostState = HOST_STATE_Powered;
 228         }
 229
 230         if (USB_INT_HasOccurred(USB_INT_BCERRI) && USB_INT_IsEnabled(USB_INT_BCERRI))
 231         {
 232                 USB_INT_Clear(USB_INT_BCERRI);
 233
 234                 EVENT_USB_Host_DeviceEnumerationFailed(HOST_ENUMERROR_NoDeviceDetected, 0);
 235                 EVENT_USB_Host_DeviceUnattached();
 236
 237                 USB_ResetInterface();
 238         }
 239         #endif
 240
 241         #if defined(USB_CAN_BE_BOTH)
 242         if (USB_INT_HasOccurred(USB_INT_IDTI) && USB_INT_IsEnabled(USB_INT_IDTI))
 243         {
 244                 USB_INT_Clear(USB_INT_IDTI);
 245
 246                 if (USB_DeviceState != DEVICE_STATE_Unattached)
 247                   EVENT_USB_Device_Disconnect();
 248
 249                 if (USB_HostState != HOST_STATE_Unattached)
 250                   EVENT_USB_Host_DeviceUnattached();
 251
 252                 USB_CurrentMode = USB_GetUSBModeFromUID();
 253                 USB_ResetInterface();
 254
 255                 EVENT_USB_UIDChange();
 256         }
 257         #endif
 258 }
 259
 260 #if defined(INTERRUPT_CONTROL_ENDPOINT) && defined(USB_CAN_BE_DEVICE)
 261 ISR(USB_COM_vect, ISR_BLOCK)
 262 {
 263         uint8_t PrevSelectedEndpoint = Endpoint_GetCurrentEndpoint();
 264
 265         Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
 266         USB_INT_Disable(USB_INT_RXSTPI);
 267
 268         NONATOMIC_BLOCK(NONATOMIC_FORCEOFF)
 269         {
 270                 USB_Device_ProcessControlRequest();
 271         }
 272
 273         Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
 274         USB_INT_Enable(USB_INT_RXSTPI);
 275         Endpoint_SelectEndpoint(PrevSelectedEndpoint);
 276 }
 277 #endif
 278