LUFA/Drivers/USB/HighLevel/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 #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_RXSTPI);
 152                 #endif
 153
 154                 EVENT_USB_Device_Reset();
 155         }
 156
 157         if (USB_INT_HasOccurred(USB_INT_SOFI) && USB_INT_IsEnabled(USB_INT_SOFI))
 158         {
 159                 USB_INT_Clear(USB_INT_SOFI);
 160
 161                 EVENT_USB_Device_StartOfFrame();
 162         }
 163         #endif
 164
 165         #if defined(USB_CAN_BE_HOST)
 166         if (USB_INT_HasOccurred(USB_INT_DDISCI) && USB_INT_IsEnabled(USB_INT_DDISCI))
 167         {
 168                 USB_INT_Clear(USB_INT_DDISCI);
 169                 USB_INT_Clear(USB_INT_DCONNI);
 170                 USB_INT_Disable(USB_INT_DDISCI);
 171
 172                 EVENT_USB_Host_DeviceUnattached();
 173
 174                 USB_ResetInterface();
 175         }
 176
 177         if (USB_INT_HasOccurred(USB_INT_VBERRI) && USB_INT_IsEnabled(USB_INT_VBERRI))
 178         {
 179                 USB_INT_Clear(USB_INT_VBERRI);
 180
 181                 USB_Host_VBUS_Manual_Off();
 182                 USB_Host_VBUS_Auto_Off();
 183
 184                 EVENT_USB_Host_HostError(HOST_ERROR_VBusVoltageDip);
 185                 EVENT_USB_Host_DeviceUnattached();
 186
 187                 USB_HostState = HOST_STATE_Unattached;
 188         }
 189
 190         if (USB_INT_HasOccurred(USB_INT_SRPI) && USB_INT_IsEnabled(USB_INT_SRPI))
 191         {
 192                 USB_INT_Clear(USB_INT_SRPI);
 193                 USB_INT_Disable(USB_INT_SRPI);
 194
 195                 EVENT_USB_Host_DeviceAttached();
 196
 197                 USB_INT_Enable(USB_INT_DDISCI);
 198
 199                 USB_HostState = HOST_STATE_Powered;
 200         }
 201
 202         if (USB_INT_HasOccurred(USB_INT_BCERRI) && USB_INT_IsEnabled(USB_INT_BCERRI))
 203         {
 204                 USB_INT_Clear(USB_INT_BCERRI);
 205
 206                 EVENT_USB_Host_DeviceEnumerationFailed(HOST_ENUMERROR_NoDeviceDetected, 0);
 207                 EVENT_USB_Host_DeviceUnattached();
 208
 209                 USB_ResetInterface();
 210         }
 211         #endif
 212
 213         #if defined(USB_CAN_BE_BOTH)
 214         if (USB_INT_HasOccurred(USB_INT_IDTI) && USB_INT_IsEnabled(USB_INT_IDTI))
 215         {
 216                 USB_INT_Clear(USB_INT_IDTI);
 217
 218                 if (USB_DeviceState != DEVICE_STATE_Unattached)
 219                   EVENT_USB_Device_Disconnect();
 220
 221                 if (USB_HostState != HOST_STATE_Unattached)
 222                   EVENT_USB_Host_DeviceUnattached();
 223
 224                 USB_CurrentMode = USB_GetUSBModeFromUID();
 225                 EVENT_USB_UIDChange();
 226
 227                 USB_ResetInterface();
 228         }
 229         #endif
 230 }
 231
 232 #if defined(INTERRUPT_CONTROL_ENDPOINT) && defined(USB_CAN_BE_DEVICE)
 233 ISR(USB_COM_vect, ISR_BLOCK)
 234 {
 235         uint8_t PrevSelectedEndpoint = Endpoint_GetCurrentEndpoint();
 236
 237         USB_USBTask();
 238
 239         USB_INT_Clear(USB_INT_RXSTPI);
 240
 241         Endpoint_SelectEndpoint(PrevSelectedEndpoint);
 242 }
 243 #endif