LUFA/Drivers/USB/Core/AVR8/USBInterrupt_AVR8.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2012.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2012  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 #include "../../../../Common/Common.h"
  32 #if (ARCH == ARCH_AVR8)
  33
  34 #define  __INCLUDE_FROM_USB_DRIVER
  35 #include "../USBInterrupt.h"
  36
  37 void USB_INT_DisableAllInterrupts(void)
  38 {
  39         #if defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
  40         USBCON &= ~((1 << VBUSTE) | (1 << IDTE));
  41         #elif defined(USB_SERIES_4_AVR)
  42         USBCON &= ~(1 << VBUSTE);
  43         #endif
  44
  45         #if defined(USB_CAN_BE_BOTH)
  46         OTGIEN  = 0;
  47         #endif
  48
  49         #if defined(USB_CAN_BE_HOST)
  50         UHIEN   = 0;
  51         #endif
  52
  53         #if defined(USB_CAN_BE_DEVICE)
  54         UDIEN   = 0;
  55         #endif
  56 }
  57
  58 void USB_INT_ClearAllInterrupts(void)
  59 {
  60         #if defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
  61         USBINT = 0;
  62         #endif
  63
  64         #if defined(USB_CAN_BE_BOTH)
  65         OTGINT = 0;
  66         #endif
  67
  68         #if defined(USB_CAN_BE_HOST)
  69         UHINT  = 0;
  70         #endif
  71
  72         #if defined(USB_CAN_BE_DEVICE)
  73         UDINT  = 0;
  74         #endif
  75 }
  76
  77 ISR(USB_GEN_vect, ISR_BLOCK)
  78 {
  79         #if defined(USB_CAN_BE_DEVICE)
  80         #if !defined(NO_SOF_EVENTS)
  81         if (USB_INT_HasOccurred(USB_INT_SOFI) && USB_INT_IsEnabled(USB_INT_SOFI))
  82         {
  83                 USB_INT_Clear(USB_INT_SOFI);
  84
  85                 EVENT_USB_Device_StartOfFrame();
  86         }
  87         #endif
  88
  89         #if defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
  90         if (USB_INT_HasOccurred(USB_INT_VBUSTI) && USB_INT_IsEnabled(USB_INT_VBUSTI))
  91         {
  92                 USB_INT_Clear(USB_INT_VBUSTI);
  93
  94                 if (USB_VBUS_GetStatus())
  95                 {
  96                         if (!(USB_Options & USB_OPT_MANUAL_PLL))
  97                         {
  98                                 USB_PLL_On();
  99                                 while (!(USB_PLL_IsReady()));
 100                         }
 101
 102                         USB_DeviceState = DEVICE_STATE_Powered;
 103                         EVENT_USB_Device_Connect();
 104                 }
 105                 else
 106                 {
 107                         if (!(USB_Options & USB_OPT_MANUAL_PLL))
 108                           USB_PLL_Off();
 109
 110                         USB_DeviceState = DEVICE_STATE_Unattached;
 111                         EVENT_USB_Device_Disconnect();
 112                 }
 113         }
 114         #endif
 115
 116         if (USB_INT_HasOccurred(USB_INT_SUSPI) && USB_INT_IsEnabled(USB_INT_SUSPI))
 117         {
 118                 USB_INT_Disable(USB_INT_SUSPI);
 119                 USB_INT_Enable(USB_INT_WAKEUPI);
 120
 121                 USB_CLK_Freeze();
 122
 123                 if (!(USB_Options & USB_OPT_MANUAL_PLL))
 124                   USB_PLL_Off();
 125
 126                 #if defined(USB_SERIES_2_AVR) && !defined(NO_LIMITED_CONTROLLER_CONNECT)
 127                 USB_DeviceState = DEVICE_STATE_Unattached;
 128                 EVENT_USB_Device_Disconnect();
 129                 #else
 130                 USB_DeviceState = DEVICE_STATE_Suspended;
 131                 EVENT_USB_Device_Suspend();
 132                 #endif
 133         }
 134
 135         if (USB_INT_HasOccurred(USB_INT_WAKEUPI) && USB_INT_IsEnabled(USB_INT_WAKEUPI))
 136         {
 137                 if (!(USB_Options & USB_OPT_MANUAL_PLL))
 138                 {
 139                         USB_PLL_On();
 140                         while (!(USB_PLL_IsReady()));
 141                 }
 142
 143                 USB_CLK_Unfreeze();
 144
 145                 USB_INT_Clear(USB_INT_WAKEUPI);
 146
 147                 USB_INT_Disable(USB_INT_WAKEUPI);
 148                 USB_INT_Enable(USB_INT_SUSPI);
 149
 150                 if (USB_Device_ConfigurationNumber)
 151                   USB_DeviceState = DEVICE_STATE_Configured;
 152                 else
 153                   USB_DeviceState = (USB_Device_IsAddressSet()) ? DEVICE_STATE_Configured : DEVICE_STATE_Powered;
 154
 155                 #if defined(USB_SERIES_2_AVR) && !defined(NO_LIMITED_CONTROLLER_CONNECT)
 156                 EVENT_USB_Device_Connect();
 157                 #else
 158                 EVENT_USB_Device_WakeUp();
 159                 #endif
 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_DeviceState                = DEVICE_STATE_Default;
 167                 USB_Device_ConfigurationNumber = 0;
 168
 169                 USB_INT_Clear(USB_INT_SUSPI);
 170                 USB_INT_Disable(USB_INT_SUSPI);
 171                 USB_INT_Enable(USB_INT_WAKEUPI);
 172
 173                 Endpoint_ConfigureEndpoint(ENDPOINT_CONTROLEP, EP_TYPE_CONTROL,
 174                                            ENDPOINT_DIR_OUT, USB_Device_ControlEndpointSize,
 175                                            ENDPOINT_BANK_SINGLE);
 176
 177                 #if defined(INTERRUPT_CONTROL_ENDPOINT)
 178                 USB_INT_Enable(USB_INT_RXSTPI);
 179                 #endif
 180
 181                 EVENT_USB_Device_Reset();
 182         }
 183         #endif
 184
 185         #if defined(USB_CAN_BE_HOST)
 186         #if !defined(NO_SOF_EVENTS)
 187         if (USB_INT_HasOccurred(USB_INT_HSOFI) && USB_INT_IsEnabled(USB_INT_HSOFI))
 188         {
 189                 USB_INT_Clear(USB_INT_HSOFI);
 190
 191                 EVENT_USB_Host_StartOfFrame();
 192         }
 193         #endif
 194
 195         if (USB_INT_HasOccurred(USB_INT_DDISCI) && USB_INT_IsEnabled(USB_INT_DDISCI))
 196         {
 197                 USB_INT_Clear(USB_INT_DDISCI);
 198                 USB_INT_Clear(USB_INT_DCONNI);
 199                 USB_INT_Disable(USB_INT_DDISCI);
 200
 201                 EVENT_USB_Host_DeviceUnattached();
 202
 203                 USB_ResetInterface();
 204         }
 205
 206         if (USB_INT_HasOccurred(USB_INT_VBERRI) && USB_INT_IsEnabled(USB_INT_VBERRI))
 207         {
 208                 USB_INT_Clear(USB_INT_VBERRI);
 209
 210                 USB_Host_VBUS_Manual_Off();
 211                 USB_Host_VBUS_Auto_Off();
 212
 213                 EVENT_USB_Host_HostError(HOST_ERROR_VBusVoltageDip);
 214                 EVENT_USB_Host_DeviceUnattached();
 215
 216                 USB_HostState = HOST_STATE_Unattached;
 217         }
 218
 219         if (USB_INT_HasOccurred(USB_INT_SRPI) && USB_INT_IsEnabled(USB_INT_SRPI))
 220         {
 221                 USB_INT_Clear(USB_INT_SRPI);
 222                 USB_INT_Disable(USB_INT_SRPI);
 223
 224                 EVENT_USB_Host_DeviceAttached();
 225
 226                 USB_INT_Enable(USB_INT_DDISCI);
 227
 228                 USB_HostState = HOST_STATE_Powered;
 229         }
 230
 231         if (USB_INT_HasOccurred(USB_INT_BCERRI) && USB_INT_IsEnabled(USB_INT_BCERRI))
 232         {
 233                 USB_INT_Clear(USB_INT_BCERRI);
 234
 235                 EVENT_USB_Host_DeviceEnumerationFailed(HOST_ENUMERROR_NoDeviceDetected, 0);
 236                 EVENT_USB_Host_DeviceUnattached();
 237
 238                 USB_ResetInterface();
 239         }
 240         #endif
 241
 242         #if defined(USB_CAN_BE_BOTH)
 243         if (USB_INT_HasOccurred(USB_INT_IDTI) && USB_INT_IsEnabled(USB_INT_IDTI))
 244         {
 245                 USB_INT_Clear(USB_INT_IDTI);
 246
 247                 if (USB_DeviceState != DEVICE_STATE_Unattached)
 248                   EVENT_USB_Device_Disconnect();
 249
 250                 if (USB_HostState != HOST_STATE_Unattached)
 251                   EVENT_USB_Host_DeviceUnattached();
 252
 253                 USB_CurrentMode = USB_GetUSBModeFromUID();
 254                 USB_ResetInterface();
 255
 256                 EVENT_USB_UIDChange();
 257         }
 258         #endif
 259 }
 260
 261 #if defined(INTERRUPT_CONTROL_ENDPOINT) && defined(USB_CAN_BE_DEVICE)
 262 ISR(USB_COM_vect, ISR_BLOCK)
 263 {
 264         uint8_t PrevSelectedEndpoint = Endpoint_GetCurrentEndpoint();
 265
 266         Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
 267         USB_INT_Disable(USB_INT_RXSTPI);
 268
 269         GlobalInterruptEnable();
 270
 271         USB_Device_ProcessControlRequest();
 272
 273         Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
 274         USB_INT_Enable(USB_INT_RXSTPI);
 275         Endpoint_SelectEndpoint(PrevSelectedEndpoint);
 276 }
 277 #endif
 278
 279 #endif
 280