LUFA/Drivers/USB/Core/AVR8/USBInterrupt.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_VBUS) && USB_INT_IsEnabled(USB_INT_VBUS))
  88         {
  89                 USB_INT_Clear(USB_INT_VBUS);
  90
  91                 if (USB_VBUS_GetStatus())
  92                 {
  93                         USB_DeviceState = DEVICE_STATE_Powered;
  94                         EVENT_USB_Device_Connect();
  95                 }
  96                 else
  97                 {
  98                         USB_DeviceState = DEVICE_STATE_Unattached;
  99                         EVENT_USB_Device_Disconnect();
 100                 }
 101         }
 102         #endif
 103
 104         if (USB_INT_HasOccurred(USB_INT_SUSPI) && USB_INT_IsEnabled(USB_INT_SUSPI))
 105         {
 106                 USB_INT_Clear(USB_INT_SUSPI);
 107
 108                 USB_INT_Disable(USB_INT_SUSPI);
 109                 USB_INT_Enable(USB_INT_WAKEUPI);
 110
 111                 USB_CLK_Freeze();
 112
 113                 if (!(USB_Options & USB_OPT_MANUAL_PLL))
 114                   USB_PLL_Off();
 115
 116                 #if defined(USB_SERIES_2_AVR) && !defined(NO_LIMITED_CONTROLLER_CONNECT)
 117                 USB_DeviceState = DEVICE_STATE_Unattached;
 118                 EVENT_USB_Device_Disconnect();
 119                 #else
 120                 USB_DeviceState = DEVICE_STATE_Suspended;
 121                 EVENT_USB_Device_Suspend();
 122                 #endif
 123         }
 124
 125         if (USB_INT_HasOccurred(USB_INT_WAKEUPI) && USB_INT_IsEnabled(USB_INT_WAKEUPI))
 126         {
 127                 if (!(USB_Options & USB_OPT_MANUAL_PLL))
 128                 {
 129                         USB_PLL_On();
 130                         while (!(USB_PLL_IsReady()));
 131                 }
 132
 133                 USB_CLK_Unfreeze();
 134
 135                 USB_INT_Clear(USB_INT_WAKEUPI);
 136
 137                 USB_INT_Disable(USB_INT_WAKEUPI);
 138                 USB_INT_Enable(USB_INT_SUSPI);
 139
 140                 if (USB_ConfigurationNumber)
 141                   USB_DeviceState = DEVICE_STATE_Configured;
 142                 else
 143                   USB_DeviceState = (USB_Device_IsAddressSet()) ? DEVICE_STATE_Configured : DEVICE_STATE_Powered;
 144
 145                 #if defined(USB_SERIES_2_AVR) && !defined(NO_LIMITED_CONTROLLER_CONNECT)
 146                 EVENT_USB_Device_Connect();
 147                 #else
 148                 EVENT_USB_Device_WakeUp();
 149                 #endif
 150         }
 151
 152         if (USB_INT_HasOccurred(USB_INT_EORSTI) && USB_INT_IsEnabled(USB_INT_EORSTI))
 153         {
 154                 USB_INT_Clear(USB_INT_EORSTI);
 155
 156                 USB_DeviceState         = DEVICE_STATE_Default;
 157                 USB_ConfigurationNumber = 0;
 158
 159                 USB_INT_Clear(USB_INT_SUSPI);
 160                 USB_INT_Disable(USB_INT_SUSPI);
 161                 USB_INT_Enable(USB_INT_WAKEUPI);
 162
 163                 Endpoint_ConfigureEndpoint(ENDPOINT_CONTROLEP, EP_TYPE_CONTROL,
 164                                            ENDPOINT_DIR_OUT, USB_ControlEndpointSize,
 165                                            ENDPOINT_BANK_SINGLE);
 166
 167                 #if defined(INTERRUPT_CONTROL_ENDPOINT)
 168                 USB_INT_Enable(USB_INT_RXSTPI);
 169                 #endif
 170
 171                 EVENT_USB_Device_Reset();
 172         }
 173         #endif
 174
 175         #if defined(USB_CAN_BE_HOST)
 176         #if !defined(NO_SOF_EVENTS)
 177         if (USB_INT_HasOccurred(USB_INT_HSOFI) && USB_INT_IsEnabled(USB_INT_HSOFI))
 178         {
 179                 USB_INT_Clear(USB_INT_HSOFI);
 180
 181                 EVENT_USB_Host_StartOfFrame();
 182         }
 183         #endif
 184
 185         if (USB_INT_HasOccurred(USB_INT_DDISCI) && USB_INT_IsEnabled(USB_INT_DDISCI))
 186         {
 187                 USB_INT_Clear(USB_INT_DDISCI);
 188                 USB_INT_Clear(USB_INT_DCONNI);
 189                 USB_INT_Disable(USB_INT_DDISCI);
 190
 191                 EVENT_USB_Host_DeviceUnattached();
 192
 193                 USB_ResetInterface();
 194         }
 195
 196         if (USB_INT_HasOccurred(USB_INT_VBERRI) && USB_INT_IsEnabled(USB_INT_VBERRI))
 197         {
 198                 USB_INT_Clear(USB_INT_VBERRI);
 199
 200                 USB_Host_VBUS_Manual_Off();
 201                 USB_Host_VBUS_Auto_Off();
 202
 203                 EVENT_USB_Host_HostError(HOST_ERROR_VBusVoltageDip);
 204                 EVENT_USB_Host_DeviceUnattached();
 205
 206                 USB_HostState = HOST_STATE_Unattached;
 207         }
 208
 209         if (USB_INT_HasOccurred(USB_INT_SRPI) && USB_INT_IsEnabled(USB_INT_SRPI))
 210         {
 211                 USB_INT_Clear(USB_INT_SRPI);
 212                 USB_INT_Disable(USB_INT_SRPI);
 213
 214                 EVENT_USB_Host_DeviceAttached();
 215
 216                 USB_INT_Enable(USB_INT_DDISCI);
 217
 218                 USB_HostState = HOST_STATE_Powered;
 219         }
 220
 221         if (USB_INT_HasOccurred(USB_INT_BCERRI) && USB_INT_IsEnabled(USB_INT_BCERRI))
 222         {
 223                 USB_INT_Clear(USB_INT_BCERRI);
 224
 225                 EVENT_USB_Host_DeviceEnumerationFailed(HOST_ENUMERROR_NoDeviceDetected, 0);
 226                 EVENT_USB_Host_DeviceUnattached();
 227
 228                 USB_ResetInterface();
 229         }
 230         #endif
 231
 232         #if defined(USB_CAN_BE_BOTH)
 233         if (USB_INT_HasOccurred(USB_INT_IDTI) && USB_INT_IsEnabled(USB_INT_IDTI))
 234         {
 235                 USB_INT_Clear(USB_INT_IDTI);
 236
 237                 if (USB_DeviceState != DEVICE_STATE_Unattached)
 238                   EVENT_USB_Device_Disconnect();
 239
 240                 if (USB_HostState != HOST_STATE_Unattached)
 241                   EVENT_USB_Host_DeviceUnattached();
 242
 243                 USB_CurrentMode = USB_GetUSBModeFromUID();
 244                 USB_ResetInterface();
 245
 246                 EVENT_USB_UIDChange();
 247         }
 248         #endif
 249 }
 250
 251 #if defined(INTERRUPT_CONTROL_ENDPOINT) && defined(USB_CAN_BE_DEVICE)
 252 ISR(USB_COM_vect, ISR_BLOCK)
 253 {
 254         uint8_t PrevSelectedEndpoint = Endpoint_GetCurrentEndpoint();
 255
 256         Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
 257         USB_INT_Disable(USB_INT_RXSTPI);
 258
 259         NONATOMIC_BLOCK(NONATOMIC_FORCEOFF)
 260         {
 261                 USB_Device_ProcessControlRequest();
 262         }
 263
 264         Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
 265         USB_INT_Enable(USB_INT_RXSTPI);
 266         Endpoint_SelectEndpoint(PrevSelectedEndpoint);
 267 }
 268 #endif
 269