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 "USBInterrupt.h"
  32
  33 void USB_INT_DisableAllInterrupts(void)
  34 {
  35         #if defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
  36         USBCON &= ~((1 << VBUSTE) | (1 << IDTE));
  37         #elif defined(USB_SERIES_4_AVR)
  38         USBCON &= ~(1 << VBUSTE);
  39         #endif
  40
  41         #if defined(USB_CAN_BE_HOST)
  42         UHIEN   = 0;
  43         OTGIEN  = 0;
  44         #endif
  45
  46         #if defined(USB_CAN_BE_DEVICE)
  47         UDIEN   = 0;
  48         #endif
  49 }
  50
  51 void USB_INT_ClearAllInterrupts(void)
  52 {
  53         #if defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
  54         USBINT  = 0;
  55         #endif
  56
  57         #if defined(USB_CAN_BE_HOST)
  58         UHINT   = 0;
  59         OTGINT  = 0;
  60         #endif
  61
  62         #if defined(USB_CAN_BE_DEVICE)
  63         UDINT   = 0;
  64         #endif
  65 }
  66
  67 ISR(USB_GEN_vect, ISR_BLOCK)
  68 {
  69         #if defined(USB_CAN_BE_DEVICE)
  70         #if defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
  71         if (USB_INT_HasOccurred(USB_INT_VBUS) && USB_INT_IsEnabled(USB_INT_VBUS))
  72         {
  73                 USB_INT_Clear(USB_INT_VBUS);
  74
  75                 EVENT_USB_VBUSChange();
  76
  77                 if (USB_VBUS_GetStatus())
  78                 {
  79                         EVENT_USB_VBUSConnect();
  80
  81                         if (USB_DeviceState != DEVICE_STATE_Unattached)
  82                           EVENT_USB_Disconnect();
  83
  84                         USB_ResetInterface();
  85
  86                         USB_DeviceState = DEVICE_STATE_Powered;
  87                         EVENT_USB_Connect();
  88                 }
  89                 else
  90                 {
  91                         USB_DeviceState = DEVICE_STATE_Unattached;
  92                         EVENT_USB_Disconnect();
  93
  94                         USB_Detach();
  95                         USB_CLK_Freeze();
  96
  97                         if (!(USB_Options & USB_OPT_MANUAL_PLL))
  98                           USB_PLL_Off();
  99
 100                         USB_REG_Off();
 101
 102                         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                 #if defined(USB_SERIES_2_AVR) && !defined(NO_LIMITED_CONTROLLER_CONNECT)
 122                 USB_DeviceState = DEVICE_STATE_Unattached;
 123                 EVENT_USB_Disconnect();
 124                 #else
 125                 USB_DeviceState = DEVICE_STATE_Suspended;
 126                 EVENT_USB_Suspend();
 127                 #endif
 128         }
 129
 130         if (USB_INT_HasOccurred(USB_INT_WAKEUP) && USB_INT_IsEnabled(USB_INT_WAKEUP))
 131         {
 132                 if (!(USB_Options & USB_OPT_MANUAL_PLL))
 133                 {
 134                         USB_PLL_On();
 135                         while (!(USB_PLL_IsReady()));
 136                 }
 137
 138                 USB_CLK_Unfreeze();
 139
 140                 USB_INT_Clear(USB_INT_WAKEUP);
 141
 142                 USB_INT_Disable(USB_INT_WAKEUP);
 143                 USB_INT_Enable(USB_INT_SUSPEND);
 144
 145                 #if defined(USB_SERIES_2_AVR) && !defined(NO_LIMITED_CONTROLLER_CONNECT)
 146                 USB_DeviceState = DEVICE_STATE_Powered;
 147                 EVENT_USB_Connect();
 148                 #else
 149                 USB_DeviceState = (USB_ConfigurationNumber) ? DEVICE_STATE_Configured : DEVICE_STATE_Addressed;
 150                 EVENT_USB_WakeUp();
 151                 #endif
 152         }
 153
 154         if (USB_INT_HasOccurred(USB_INT_EORSTI) && USB_INT_IsEnabled(USB_INT_EORSTI))
 155         {
 156                 USB_INT_Clear(USB_INT_EORSTI);
 157
 158                 USB_DeviceState         = DEVICE_STATE_Default;
 159                 USB_ConfigurationNumber = 0;
 160
 161                 USB_INT_Clear(USB_INT_SUSPEND);
 162                 USB_INT_Disable(USB_INT_SUSPEND);
 163                 USB_INT_Enable(USB_INT_WAKEUP);
 164
 165                 Endpoint_ClearEndpoints();
 166
 167                 Endpoint_ConfigureEndpoint(ENDPOINT_CONTROLEP, EP_TYPE_CONTROL,
 168                                            ENDPOINT_DIR_OUT, USB_ControlEndpointSize,
 169                                            ENDPOINT_BANK_SINGLE);
 170
 171                 #if defined(INTERRUPT_CONTROL_ENDPOINT)
 172                 USB_INT_Enable(USB_INT_ENDPOINT_SETUP);
 173                 #endif
 174
 175                 EVENT_USB_Reset();
 176         }
 177         #endif
 178
 179         #if defined(USB_CAN_BE_HOST)
 180         if (USB_INT_HasOccurred(USB_INT_DDISCI) && USB_INT_IsEnabled(USB_INT_DDISCI))
 181         {
 182                 USB_INT_Clear(USB_INT_DDISCI);
 183                 USB_INT_Clear(USB_INT_DCONNI);
 184                 USB_INT_Disable(USB_INT_DDISCI);
 185
 186                 EVENT_USB_DeviceUnattached();
 187                 EVENT_USB_Disconnect();
 188
 189                 USB_ResetInterface();
 190         }
 191
 192         if (USB_INT_HasOccurred(USB_INT_VBERRI) && USB_INT_IsEnabled(USB_INT_VBERRI))
 193         {
 194                 USB_INT_Clear(USB_INT_VBERRI);
 195
 196                 USB_Host_VBUS_Manual_Off();
 197                 USB_Host_VBUS_Auto_Off();
 198
 199                 EVENT_USB_HostError(HOST_ERROR_VBusVoltageDip);
 200                 EVENT_USB_DeviceUnattached();
 201
 202                 USB_HostState = HOST_STATE_Unattached;
 203         }
 204
 205         if (USB_INT_HasOccurred(USB_INT_SRPI) && USB_INT_IsEnabled(USB_INT_SRPI))
 206         {
 207                 USB_INT_Clear(USB_INT_SRPI);
 208                 USB_INT_Disable(USB_INT_SRPI);
 209
 210                 EVENT_USB_DeviceAttached();
 211
 212                 USB_INT_Enable(USB_INT_DDISCI);
 213
 214                 USB_HostState = HOST_STATE_Powered;
 215         }
 216
 217         if (USB_INT_HasOccurred(USB_INT_BCERRI) && USB_INT_IsEnabled(USB_INT_BCERRI))
 218         {
 219                 USB_INT_Clear(USB_INT_BCERRI);
 220
 221                 EVENT_USB_DeviceEnumerationFailed(HOST_ENUMERROR_NoDeviceDetected, 0);
 222                 EVENT_USB_DeviceUnattached();
 223
 224                 if (USB_HostState != HOST_STATE_Unattached)
 225                   EVENT_USB_Disconnect();
 226
 227                 USB_ResetInterface();
 228         }
 229         #endif
 230
 231         #if defined(USB_CAN_BE_BOTH)
 232         if (USB_INT_HasOccurred(USB_INT_IDTI) && USB_INT_IsEnabled(USB_INT_IDTI))
 233         {
 234                 USB_INT_Clear(USB_INT_IDTI);
 235
 236                 if (USB_DeviceState != DEVICE_STATE_Unattached)
 237                   EVENT_USB_Disconnect();
 238
 239                 if (USB_HostState != HOST_STATE_Unattached)
 240                 {
 241                         EVENT_USB_Disconnect();
 242                         EVENT_USB_DeviceUnattached();
 243                 }
 244
 245                 EVENT_USB_Disconnect();
 246
 247                 EVENT_USB_UIDChange();
 248
 249                 USB_ResetInterface();
 250         }
 251         #endif
 252 }
 253
 254 #if defined(INTERRUPT_CONTROL_ENDPOINT)
 255 ISR(USB_COM_vect, ISR_NOBLOCK)
 256 {
 257         uint8_t PrevSelectedEndpoint = Endpoint_GetCurrentEndpoint();
 258
 259         USB_USBTask();
 260
 261         USB_INT_Clear(USB_INT_ENDPOINT_SETUP);
 262
 263         Endpoint_SelectEndpoint(PrevSelectedEndpoint);
 264 }
 265 #endif