LUFA/Drivers/USB/Core/UC3B/Pipe_UC3B.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 "../USBMode.h"
  33
  34 #if defined(USB_CAN_BE_HOST)
  35
  36 #include "../Pipe.h"
  37
  38 uint8_t USB_ControlPipeSize = PIPE_CONTROLPIPE_DEFAULT_SIZE;
  39 uint8_t USB_SelectedPipe    = PIPE_CONTROLPIPE;
  40
  41 bool Pipe_ConfigurePipe(const uint8_t Number,
  42                         const uint8_t Type,
  43                         const uint8_t Token,
  44                         const uint8_t EndpointNumber,
  45                         const uint16_t Size,
  46                         const uint8_t Banks)
  47 {
  48         Pipe_SelectPipe(Number);
  49         Pipe_EnablePipe();
  50
  51         *((uint32_t*)AVR32_USBB_UPCFG0)[USB_SelectedPipe] = 0;
  52         *((uint32_t*)AVR32_USBB_UPCFG0)[USB_SelectedPipe] = (AVR32_USBB_ALLOC_MASK |
  53                                                             ((uint32_t)Type  << AVR32_USBB_PTYPE_OFFSET)  |
  54                                                             ((uint32_t)Token << AVR32_USBB_PTOKEN_OFFSET) |
  55                                                             ((uint32_t)Banks << AVR32_USBB_PBK_OFFSET)    |
  56                                                             ((EndpointNumber & PIPE_EPNUM_MASK) << AVR32_USBB_PEPNUM_OFFSET));
  57
  58         Pipe_SetInfiniteINRequests();
  59
  60         return Pipe_IsConfigured();
  61 }
  62
  63 void Pipe_ClearPipes(void)
  64 {
  65         UPINT = 0;
  66
  67         for (uint8_t PNum = 0; PNum < PIPE_TOTAL_PIPES; PNum++)
  68         {
  69                 Pipe_SelectPipe(PNum);
  70                 *((uint32_t*)AVR32_USBB_UPCFG0)[USB_SelectedPipe] = 0;
  71                 Pipe_DisablePipe();
  72         }
  73 }
  74
  75 bool Pipe_IsEndpointBound(const uint8_t EndpointAddress)
  76 {
  77         uint8_t PrevPipeNumber = Pipe_GetCurrentPipe();
  78
  79         for (uint8_t PNum = 0; PNum < PIPE_TOTAL_PIPES; PNum++)
  80         {
  81                 Pipe_SelectPipe(PNum);
  82
  83                 if (!(Pipe_IsConfigured()))
  84                   continue;
  85
  86                 uint8_t PipeToken        = Pipe_GetPipeToken();
  87                 bool    PipeTokenCorrect = true;
  88
  89                 if (PipeToken != PIPE_TOKEN_SETUP)
  90                   PipeTokenCorrect = (PipeToken == ((EndpointAddress & PIPE_EPDIR_MASK) ? PIPE_TOKEN_IN : PIPE_TOKEN_OUT));
  91
  92                 if (PipeTokenCorrect && (Pipe_BoundEndpointNumber() == (EndpointAddress & PIPE_EPNUM_MASK)))
  93                   return true;
  94         }
  95
  96         Pipe_SelectPipe(PrevPipeNumber);
  97         return false;
  98 }
  99
 100 uint8_t Pipe_WaitUntilReady(void)
 101 {
 102         #if (USB_STREAM_TIMEOUT_MS < 0xFF)
 103         uint8_t  TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
 104         #else
 105         uint16_t TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
 106         #endif
 107
 108         uint16_t PreviousFrameNumber = USB_Host_GetFrameNumber();
 109
 110         for (;;)
 111         {
 112                 if (Pipe_GetPipeToken() == PIPE_TOKEN_IN)
 113                 {
 114                         if (Pipe_IsINReceived())
 115                           return PIPE_READYWAIT_NoError;
 116                 }
 117                 else
 118                 {
 119                         if (Pipe_IsOUTReady())
 120                           return PIPE_READYWAIT_NoError;
 121                 }
 122
 123                 if (Pipe_IsStalled())
 124                   return PIPE_READYWAIT_PipeStalled;
 125                 else if (USB_HostState == HOST_STATE_Unattached)
 126                   return PIPE_READYWAIT_DeviceDisconnected;
 127
 128                 uint16_t CurrentFrameNumber = USB_Host_GetFrameNumber();
 129
 130                 if (CurrentFrameNumber != PreviousFrameNumber)
 131                 {
 132                         PreviousFrameNumber = CurrentFrameNumber;
 133
 134                         if (!(TimeoutMSRem--))
 135                           return PIPE_READYWAIT_Timeout;
 136                 }
 137         }
 138 }
 139
 140 #endif
 141