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                 if (USB_VBUS_GetStatus())
  76                 {
  77                         USB_DeviceState = DEVICE_STATE_Powered;
  78                         EVENT_USB_Device_Connect();
  79                 }
  80                 else
  81                 {
  82                         USB_DeviceState = DEVICE_STATE_Unattached;
  83                         EVENT_USB_Device_Disconnect();
  84                 }
  85         }
  86         #endif
  87
  88         if (USB_INT_HasOccurred(USB_INT_SUSPEND) && USB_INT_IsEnabled(USB_INT_SUSPEND))
  89         {
  90                 USB_INT_Clear(USB_INT_SUSPEND);
  91
  92                 USB_INT_Disable(USB_INT_SUSPEND);
  93                 USB_INT_Enable(USB_INT_WAKEUP);
  94
  95                 USB_CLK_Freeze();
  96
  97                 if (!(USB_Options & USB_OPT_MANUAL_PLL))
  98                   USB_PLL_Off();
  99
 100                 #if defined(USB_SERIES_2_AVR) && !defined(NO_LIMITED_CONTROLLER_CONNECT)
 101                 USB_DeviceState = DEVICE_STATE_Unattached;
 102                 EVENT_USB_Device_Disconnect();
 103                 #else
 104                 USB_DeviceState = DEVICE_STATE_Suspended;
 105                 EVENT_USB_Device_Suspend();
 106                 #endif
 107         }
 108
 109         if (USB_INT_HasOccurred(USB_INT_WAKEUP) && USB_INT_IsEnabled(USB_INT_WAKEUP))
 110         {
 111                 if (!(USB_Options & USB_OPT_MANUAL_PLL))
 112                 {
 113                         USB_PLL_On();
 114                         while (!(USB_PLL_IsReady()));
 115                 }
 116
 117                 USB_CLK_Unfreeze();
 118
 119                 USB_INT_Clear(USB_INT_WAKEUP);
 120
 121                 USB_INT_Disable(USB_INT_WAKEUP);
 122                 USB_INT_Enable(USB_INT_SUSPEND);
 123
 124                 #if defined(USB_SERIES_2_AVR) && !defined(NO_LIMITED_CONTROLLER_CONNECT)
 125                 USB_DeviceState = (USB_ConfigurationNumber) ? DEVICE_STATE_Configured : DEVICE_STATE_Powered;
 126                 EVENT_USB_Device_Connect();
 127                 #else
 128                 USB_DeviceState = (USB_ConfigurationNumber) ? DEVICE_STATE_Configured : DEVICE_STATE_Addressed;
 129                 EVENT_USB_Device_WakeUp();
 130                 #endif
 131         }
 132
 133         if (USB_INT_HasOccurred(USB_INT_EORSTI) && USB_INT_IsEnabled(USB_INT_EORSTI))
 134         {
 135                 USB_INT_Clear(USB_INT_EORSTI);
 136
 137                 USB_DeviceState         = DEVICE_STATE_Default;
 138                 USB_ConfigurationNumber = 0;
 139
 140                 USB_INT_Clear(USB_INT_SUSPEND);
 141                 USB_INT_Disable(USB_INT_SUSPEND);
 142                 USB_INT_Enable(USB_INT_WAKEUP);
 143
 144                 Endpoint_ClearEndpoints();
 145
 146                 Endpoint_ConfigureEndpoint(ENDPOINT_CONTROLEP, EP_TYPE_CONTROL,
 147                                            ENDPOINT_DIR_OUT, USB_ControlEndpointSize,
 148                                            ENDPOINT_BANK_SINGLE);
 149
 150                 #if defined(INTERRUPT_CONTROL_ENDPOINT)
 151                 USB_INT_Enable(USB_INT_ENDPOINT_SETUP);
 152                 #endif
 153
 154                 EVENT_USB_Device_Reset();
 155         }
 156         #endif
 157
 158         #if defined(USB_CAN_BE_HOST)
 159         if (USB_INT_HasOccurred(USB_INT_DDISCI) && USB_INT_IsEnabled(USB_INT_DDISCI))
 160         {
 161                 USB_INT_Clear(USB_INT_DDISCI);
 162                 USB_INT_Clear(USB_INT_DCONNI);
 163                 USB_INT_Disable(USB_INT_DDISCI);
 164
 165                 EVENT_USB_Host_DeviceUnattached();
 166
 167                 USB_ResetInterface();
 168         }
 169
 170         if (USB_INT_HasOccurred(USB_INT_VBERRI) && USB_INT_IsEnabled(USB_INT_VBERRI))
 171         {
 172                 USB_INT_Clear(USB_INT_VBERRI);
 173
 174                 USB_Host_VBUS_Manual_Off();
 175                 USB_Host_VBUS_Auto_Off();
 176
 177                 EVENT_USB_Host_HostError(HOST_ERROR_VBusVoltageDip);
 178                 EVENT_USB_Host_DeviceUnattached();
 179
 180                 USB_HostState = HOST_STATE_Unattached;
 181         }
 182
 183         if (USB_INT_HasOccurred(USB_INT_SRPI) && USB_INT_IsEnabled(USB_INT_SRPI))
 184         {
 185                 USB_INT_Clear(USB_INT_SRPI);
 186                 USB_INT_Disable(USB_INT_SRPI);
 187
 188                 EVENT_USB_Host_DeviceAttached();
 189
 190                 USB_INT_Enable(USB_INT_DDISCI);
 191
 192                 USB_HostState = HOST_STATE_Powered;
 193         }
 194
 195         if (USB_INT_HasOccurred(USB_INT_BCERRI) && USB_INT_IsEnabled(USB_INT_BCERRI))
 196         {
 197                 USB_INT_Clear(USB_INT_BCERRI);
 198
 199                 EVENT_USB_Host_DeviceEnumerationFailed(HOST_ENUMERROR_NoDeviceDetected, 0);
 200                 EVENT_USB_Host_DeviceUnattached();
 201
 202                 USB_ResetInterface();
 203         }
 204         #endif
 205
 206         #if defined(USB_CAN_BE_BOTH)
 207         if (USB_INT_HasOccurred(USB_INT_IDTI) && USB_INT_IsEnabled(USB_INT_IDTI))
 208         {
 209                 USB_INT_Clear(USB_INT_IDTI);
 210
 211                 if (USB_DeviceState != DEVICE_STATE_Unattached)
 212                   EVENT_USB_Device_Disconnect();
 213
 214                 if (USB_HostState != HOST_STATE_Unattached)
 215                   EVENT_USB_Host_DeviceUnattached();
 216
 217                 USB_CurrentMode = USB_GetUSBModeFromUID();
 218                 EVENT_USB_UIDChange();
 219
 220                 USB_ResetInterface();
 221         }
 222         #endif
 223 }
 224
 225 #if defined(INTERRUPT_CONTROL_ENDPOINT)
 226 ISR(USB_COM_vect, ISR_NOBLOCK)
 227 {
 228         uint8_t PrevSelectedEndpoint = Endpoint_GetCurrentEndpoint();
 229
 230         USB_USBTask();
 231
 232         USB_INT_Clear(USB_INT_ENDPOINT_SETUP);
 233
 234         Endpoint_SelectEndpoint(PrevSelectedEndpoint);
 235 }
 236 #endif