LUFA/Drivers/USB/LowLevel/USBInterrupt.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2010.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6       www.fourwalledcubicle.com
   7 */
   8
   9 /*
  10   Copyright 2010  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(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
  78         if (USB_INT_HasOccurred(USB_INT_VBUS) && USB_INT_IsEnabled(USB_INT_VBUS))
  79         {
  80                 USB_INT_Clear(USB_INT_VBUS);
  81
  82                 if (USB_VBUS_GetStatus())
  83                 {
  84                         USB_DeviceState = DEVICE_STATE_Powered;
  85                         EVENT_USB_Device_Connect();
  86                 }
  87                 else
  88                 {
  89                         USB_DeviceState = DEVICE_STATE_Unattached;
  90                         EVENT_USB_Device_Disconnect();
  91                 }
  92         }
  93         #endif
  94
  95         if (USB_INT_HasOccurred(USB_INT_SUSPI) && USB_INT_IsEnabled(USB_INT_SUSPI))
  96         {
  97                 USB_INT_Clear(USB_INT_SUSPI);
  98
  99                 USB_INT_Disable(USB_INT_SUSPI);
 100                 USB_INT_Enable(USB_INT_WAKEUPI);
 101
 102                 USB_CLK_Freeze();
 103
 104                 if (!(USB_Options & USB_OPT_MANUAL_PLL))
 105                   USB_PLL_Off();
 106
 107                 #if defined(USB_SERIES_2_AVR) && !defined(NO_LIMITED_CONTROLLER_CONNECT)
 108                 USB_DeviceState = DEVICE_STATE_Unattached;
 109                 EVENT_USB_Device_Disconnect();
 110                 #else
 111                 USB_DeviceState = DEVICE_STATE_Suspended;
 112                 EVENT_USB_Device_Suspend();
 113                 #endif
 114         }
 115
 116         if (USB_INT_HasOccurred(USB_INT_WAKEUPI) && USB_INT_IsEnabled(USB_INT_WAKEUPI))
 117         {
 118                 if (!(USB_Options & USB_OPT_MANUAL_PLL))
 119                 {
 120                         USB_PLL_On();
 121                         while (!(USB_PLL_IsReady()));
 122                 }
 123
 124                 USB_CLK_Unfreeze();
 125
 126                 USB_INT_Clear(USB_INT_WAKEUPI);
 127
 128                 USB_INT_Disable(USB_INT_WAKEUPI);
 129                 USB_INT_Enable(USB_INT_SUSPI);
 130
 131                 if (USB_ConfigurationNumber)
 132                   USB_DeviceState = DEVICE_STATE_Configured;
 133                 else
 134                   USB_DeviceState = (USB_Device_IsAddressSet()) ? DEVICE_STATE_Configured : DEVICE_STATE_Powered;
 135
 136                 #if defined(USB_SERIES_2_AVR) && !defined(NO_LIMITED_CONTROLLER_CONNECT)
 137                 EVENT_USB_Device_Connect();
 138                 #else
 139                 EVENT_USB_Device_WakeUp();
 140                 #endif
 141         }
 142
 143         if (USB_INT_HasOccurred(USB_INT_EORSTI) && USB_INT_IsEnabled(USB_INT_EORSTI))
 144         {
 145                 USB_INT_Clear(USB_INT_EORSTI);
 146
 147                 USB_DeviceState         = DEVICE_STATE_Default;
 148                 USB_ConfigurationNumber = 0;
 149
 150                 USB_INT_Clear(USB_INT_SUSPI);
 151                 USB_INT_Disable(USB_INT_SUSPI);
 152                 USB_INT_Enable(USB_INT_WAKEUPI);
 153
 154                 Endpoint_ConfigureEndpoint(ENDPOINT_CONTROLEP, EP_TYPE_CONTROL,
 155                                            ENDPOINT_DIR_OUT, USB_ControlEndpointSize,
 156                                            ENDPOINT_BANK_SINGLE);
 157
 158                 #if defined(INTERRUPT_CONTROL_ENDPOINT)
 159                 USB_INT_Enable(USB_INT_RXSTPI);
 160                 #endif
 161
 162                 EVENT_USB_Device_Reset();
 163         }
 164
 165         if (USB_INT_HasOccurred(USB_INT_SOFI) && USB_INT_IsEnabled(USB_INT_SOFI))
 166         {
 167                 USB_INT_Clear(USB_INT_SOFI);
 168
 169                 EVENT_USB_Device_StartOfFrame();
 170         }
 171         #endif
 172
 173         #if defined(USB_CAN_BE_HOST)
 174         if (USB_INT_HasOccurred(USB_INT_DDISCI) && USB_INT_IsEnabled(USB_INT_DDISCI))
 175         {
 176                 USB_INT_Clear(USB_INT_DDISCI);
 177                 USB_INT_Clear(USB_INT_DCONNI);
 178                 USB_INT_Disable(USB_INT_DDISCI);
 179
 180                 EVENT_USB_Host_DeviceUnattached();
 181
 182                 USB_ResetInterface();
 183         }
 184
 185         if (USB_INT_HasOccurred(USB_INT_VBERRI) && USB_INT_IsEnabled(USB_INT_VBERRI))
 186         {
 187                 USB_INT_Clear(USB_INT_VBERRI);
 188
 189                 USB_Host_VBUS_Manual_Off();
 190                 USB_Host_VBUS_Auto_Off();
 191
 192                 EVENT_USB_Host_HostError(HOST_ERROR_VBusVoltageDip);
 193                 EVENT_USB_Host_DeviceUnattached();
 194
 195                 USB_HostState = HOST_STATE_Unattached;
 196         }
 197
 198         if (USB_INT_HasOccurred(USB_INT_SRPI) && USB_INT_IsEnabled(USB_INT_SRPI))
 199         {
 200                 USB_INT_Clear(USB_INT_SRPI);
 201                 USB_INT_Disable(USB_INT_SRPI);
 202
 203                 EVENT_USB_Host_DeviceAttached();
 204
 205                 USB_INT_Enable(USB_INT_DDISCI);
 206
 207                 USB_HostState = HOST_STATE_Powered;
 208         }
 209
 210         if (USB_INT_HasOccurred(USB_INT_BCERRI) && USB_INT_IsEnabled(USB_INT_BCERRI))
 211         {
 212                 USB_INT_Clear(USB_INT_BCERRI);
 213
 214                 EVENT_USB_Host_DeviceEnumerationFailed(HOST_ENUMERROR_NoDeviceDetected, 0);
 215                 EVENT_USB_Host_DeviceUnattached();
 216
 217                 USB_ResetInterface();
 218         }
 219
 220         if (USB_INT_HasOccurred(USB_INT_HSOFI) && USB_INT_IsEnabled(USB_INT_HSOFI))
 221         {
 222                 USB_INT_Clear(USB_INT_HSOFI);
 223
 224                 EVENT_USB_Host_StartOfFrame();
 225         }
 226         #endif
 227
 228         #if defined(USB_CAN_BE_BOTH)
 229         if (USB_INT_HasOccurred(USB_INT_IDTI) && USB_INT_IsEnabled(USB_INT_IDTI))
 230         {
 231                 USB_INT_Clear(USB_INT_IDTI);
 232
 233                 if (USB_DeviceState != DEVICE_STATE_Unattached)
 234                   EVENT_USB_Device_Disconnect();
 235
 236                 if (USB_HostState != HOST_STATE_Unattached)
 237                   EVENT_USB_Host_DeviceUnattached();
 238
 239                 USB_CurrentMode = USB_GetUSBModeFromUID();
 240                 USB_ResetInterface();
 241
 242                 EVENT_USB_UIDChange();
 243         }
 244         #endif
 245 }
 246
 247 #if defined(INTERRUPT_CONTROL_ENDPOINT) && defined(USB_CAN_BE_DEVICE)
 248 ISR(USB_COM_vect, ISR_BLOCK)
 249 {
 250         uint8_t PrevSelectedEndpoint = Endpoint_GetCurrentEndpoint();
 251
 252         Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
 253         USB_INT_Disable(USB_INT_RXSTPI);
 254
 255         NONATOMIC_BLOCK(NONATOMIC_FORCEOFF)
 256         {
 257                 USB_Device_ProcessControlRequest();
 258         }
 259
 260         Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
 261         USB_INT_Enable(USB_INT_RXSTPI);
 262         Endpoint_SelectEndpoint(PrevSelectedEndpoint);
 263 }
 264 #endif