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 << OTGPADE) | (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_SUSPEND) && USB_INT_IsEnabled(USB_INT_SUSPEND))
  96         {
  97                 USB_INT_Clear(USB_INT_SUSPEND);
  98
  99                 USB_INT_Disable(USB_INT_SUSPEND);
 100                 USB_INT_Enable(USB_INT_WAKEUP);
 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_WAKEUP) && USB_INT_IsEnabled(USB_INT_WAKEUP))
 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_WAKEUP);
 127
 128                 USB_INT_Disable(USB_INT_WAKEUP);
 129                 USB_INT_Enable(USB_INT_SUSPEND);
 130
 131                 #if defined(USB_SERIES_2_AVR) && !defined(NO_LIMITED_CONTROLLER_CONNECT)
 132                 USB_DeviceState = (USB_ConfigurationNumber) ? DEVICE_STATE_Configured : DEVICE_STATE_Powered;
 133                 EVENT_USB_Device_Connect();
 134                 #else
 135                 USB_DeviceState = (USB_ConfigurationNumber) ? DEVICE_STATE_Configured : DEVICE_STATE_Addressed;
 136                 EVENT_USB_Device_WakeUp();
 137                 #endif
 138         }
 139
 140         if (USB_INT_HasOccurred(USB_INT_EORSTI) && USB_INT_IsEnabled(USB_INT_EORSTI))
 141         {
 142                 USB_INT_Clear(USB_INT_EORSTI);
 143
 144                 USB_DeviceState         = DEVICE_STATE_Default;
 145                 USB_ConfigurationNumber = 0;
 146
 147                 USB_INT_Clear(USB_INT_SUSPEND);
 148                 USB_INT_Disable(USB_INT_SUSPEND);
 149                 USB_INT_Enable(USB_INT_WAKEUP);
 150
 151                 Endpoint_ConfigureEndpoint(ENDPOINT_CONTROLEP, EP_TYPE_CONTROL,
 152                                            ENDPOINT_DIR_OUT, USB_ControlEndpointSize,
 153                                            ENDPOINT_BANK_SINGLE);
 154
 155                 #if defined(INTERRUPT_CONTROL_ENDPOINT)
 156                 USB_INT_Enable(USB_INT_RXSTPI);
 157                 #endif
 158
 159                 EVENT_USB_Device_Reset();
 160         }
 161
 162         if (USB_INT_HasOccurred(USB_INT_SOFI) && USB_INT_IsEnabled(USB_INT_SOFI))
 163         {
 164                 USB_INT_Clear(USB_INT_SOFI);
 165
 166                 EVENT_USB_Device_StartOfFrame();
 167         }
 168         #endif
 169
 170         #if defined(USB_CAN_BE_HOST)
 171         if (USB_INT_HasOccurred(USB_INT_DDISCI) && USB_INT_IsEnabled(USB_INT_DDISCI))
 172         {
 173                 USB_INT_Clear(USB_INT_DDISCI);
 174                 USB_INT_Clear(USB_INT_DCONNI);
 175                 USB_INT_Disable(USB_INT_DDISCI);
 176
 177                 EVENT_USB_Host_DeviceUnattached();
 178
 179                 USB_ResetInterface();
 180         }
 181
 182         if (USB_INT_HasOccurred(USB_INT_VBERRI) && USB_INT_IsEnabled(USB_INT_VBERRI))
 183         {
 184                 USB_INT_Clear(USB_INT_VBERRI);
 185
 186                 USB_Host_VBUS_Manual_Off();
 187                 USB_Host_VBUS_Auto_Off();
 188
 189                 EVENT_USB_Host_HostError(HOST_ERROR_VBusVoltageDip);
 190                 EVENT_USB_Host_DeviceUnattached();
 191
 192                 USB_HostState = HOST_STATE_Unattached;
 193         }
 194
 195         if (USB_INT_HasOccurred(USB_INT_SRPI) && USB_INT_IsEnabled(USB_INT_SRPI))
 196         {
 197                 USB_INT_Clear(USB_INT_SRPI);
 198                 USB_INT_Disable(USB_INT_SRPI);
 199
 200                 EVENT_USB_Host_DeviceAttached();
 201
 202                 USB_INT_Enable(USB_INT_DDISCI);
 203
 204                 USB_HostState = HOST_STATE_Powered;
 205         }
 206
 207         if (USB_INT_HasOccurred(USB_INT_BCERRI) && USB_INT_IsEnabled(USB_INT_BCERRI))
 208         {
 209                 USB_INT_Clear(USB_INT_BCERRI);
 210
 211                 EVENT_USB_Host_DeviceEnumerationFailed(HOST_ENUMERROR_NoDeviceDetected, 0);
 212                 EVENT_USB_Host_DeviceUnattached();
 213
 214                 USB_ResetInterface();
 215         }
 216
 217         if (USB_INT_HasOccurred(USB_INT_HSOFI) && USB_INT_IsEnabled(USB_INT_HSOFI))
 218         {
 219                 USB_INT_Clear(USB_INT_HSOFI);
 220
 221                 EVENT_USB_Host_StartOfFrame();
 222         }
 223         #endif
 224
 225         #if defined(USB_CAN_BE_BOTH)
 226         if (USB_INT_HasOccurred(USB_INT_IDTI) && USB_INT_IsEnabled(USB_INT_IDTI))
 227         {
 228                 USB_INT_Clear(USB_INT_IDTI);
 229
 230                 if (USB_DeviceState != DEVICE_STATE_Unattached)
 231                   EVENT_USB_Device_Disconnect();
 232
 233                 if (USB_HostState != HOST_STATE_Unattached)
 234                   EVENT_USB_Host_DeviceUnattached();
 235
 236                 USB_CurrentMode = USB_GetUSBModeFromUID();
 237                 EVENT_USB_UIDChange();
 238
 239                 USB_ResetInterface();
 240         }
 241         #endif
 242 }
 243
 244 #if defined(INTERRUPT_CONTROL_ENDPOINT) && defined(USB_CAN_BE_DEVICE)
 245 ISR(USB_COM_vect, ISR_BLOCK)
 246 {
 247         uint8_t PrevSelectedEndpoint = Endpoint_GetCurrentEndpoint();
 248
 249         Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
 250         USB_INT_Disable(USB_INT_RXSTPI);
 251
 252         NONATOMIC_BLOCK(NONATOMIC_FORCEOFF)
 253         {
 254                 USB_Device_ProcessControlRequest();
 255         }
 256
 257         Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
 258         USB_INT_Enable(USB_INT_RXSTPI);
 259         Endpoint_SelectEndpoint(PrevSelectedEndpoint);
 260 }
 261 #endif