LUFA/Drivers/USB/Core/AVR8/Pipe_AVR8.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
  40 bool Pipe_ConfigurePipe(const uint8_t Number,
  41                         const uint8_t Type,
  42                         const uint8_t Token,
  43                         const uint8_t EndpointNumber,
  44                         const uint16_t Size,
  45                         const uint8_t Banks)
  46 {
  47 #if defined(ORDERED_EP_CONFIG)
  48         Pipe_SelectPipe(Number);
  49         Pipe_EnablePipe();
  50
  51         UPCFG1X = 0;
  52
  53         UPCFG0X = ((Type << EPTYPE0) | Token | ((EndpointNumber & PIPE_EPNUM_MASK) << PEPNUM0));
  54         UPCFG1X = ((1 << ALLOC) | Banks | Pipe_BytesToEPSizeMask(Size));
  55
  56         Pipe_SetInfiniteINRequests();
  57
  58         return Pipe_IsConfigured();
  59 #else
  60         for (uint8_t PNum = Number; PNum < PIPE_TOTAL_PIPES; PNum++)
  61         {
  62                 uint8_t UPCFG0XTemp;
  63                 uint8_t UPCFG1XTemp;
  64                 uint8_t UPCFG2XTemp;
  65                 uint8_t UPCONXTemp;
  66                 uint8_t UPINRQXTemp;
  67                 uint8_t UPIENXTemp;
  68
  69                 Pipe_SelectPipe(PNum);
  70
  71                 if (PNum == Number)
  72                 {
  73                         UPCFG0XTemp = ((Type << EPTYPE0) | Token | ((EndpointNumber & PIPE_EPNUM_MASK) << PEPNUM0));
  74                         UPCFG1XTemp = ((1 << ALLOC) | Banks | Pipe_BytesToEPSizeMask(Size));
  75                         UPCFG2XTemp = 0;
  76                         UPCONXTemp  = ((1 << PEN) | (1 << INMODE));
  77                         UPINRQXTemp = 0;
  78                         UPIENXTemp  = 0;
  79                 }
  80                 else
  81                 {
  82                         UPCFG0XTemp = UPCFG0X;
  83                         UPCFG1XTemp = UPCFG1X;
  84                         UPCFG2XTemp = UPCFG2X;
  85                         UPCONXTemp  = UPCONX;
  86                         UPINRQXTemp = UPINRQX;
  87                         UPIENXTemp  = UPIENX;
  88                 }
  89
  90                 Pipe_SetInfiniteINRequests();
  91
  92                 if (!(UPCFG1XTemp & (1 << ALLOC)))
  93                   continue;
  94
  95                 Pipe_DisablePipe();
  96                 UPCFG1X &= (1 << ALLOC);
  97
  98                 Pipe_EnablePipe();
  99                 UPCFG0X = UPCFG0XTemp;
 100                 UPCFG1X = UPCFG1XTemp;
 101                 UPCFG2X = UPCFG2XTemp;
 102                 UPCONX  = UPCONXTemp;
 103                 UPINRQX = UPINRQXTemp;
 104                 UPIENX  = UPIENXTemp;
 105
 106                 if (!(Pipe_IsConfigured()))
 107                   return false;
 108         }
 109
 110         Pipe_SelectPipe(Number);
 111         return true;
 112 #endif
 113 }
 114
 115 void Pipe_ClearPipes(void)
 116 {
 117         UPINT = 0;
 118
 119         for (uint8_t PNum = 0; PNum < PIPE_TOTAL_PIPES; PNum++)
 120         {
 121                 Pipe_SelectPipe(PNum);
 122                 UPIENX  = 0;
 123                 UPINTX  = 0;
 124                 UPCFG1X = 0;
 125                 Pipe_DisablePipe();
 126         }
 127 }
 128
 129 bool Pipe_IsEndpointBound(const uint8_t EndpointAddress)
 130 {
 131         uint8_t PrevPipeNumber = Pipe_GetCurrentPipe();
 132
 133         for (uint8_t PNum = 0; PNum < PIPE_TOTAL_PIPES; PNum++)
 134         {
 135                 Pipe_SelectPipe(PNum);
 136
 137                 if (!(Pipe_IsConfigured()))
 138                   continue;
 139
 140                 uint8_t PipeToken        = Pipe_GetPipeToken();
 141                 bool    PipeTokenCorrect = true;
 142
 143                 if (PipeToken != PIPE_TOKEN_SETUP)
 144                   PipeTokenCorrect = (PipeToken == ((EndpointAddress & PIPE_EPDIR_MASK) ? PIPE_TOKEN_IN : PIPE_TOKEN_OUT));
 145
 146                 if (PipeTokenCorrect && (Pipe_BoundEndpointNumber() == (EndpointAddress & PIPE_EPNUM_MASK)))
 147                   return true;
 148         }
 149
 150         Pipe_SelectPipe(PrevPipeNumber);
 151         return false;
 152 }
 153
 154 uint8_t Pipe_WaitUntilReady(void)
 155 {
 156         #if (USB_STREAM_TIMEOUT_MS < 0xFF)
 157         uint8_t  TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
 158         #else
 159         uint16_t TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
 160         #endif
 161
 162         uint16_t PreviousFrameNumber = USB_Host_GetFrameNumber();
 163
 164         for (;;)
 165         {
 166                 if (Pipe_GetPipeToken() == PIPE_TOKEN_IN)
 167                 {
 168                         if (Pipe_IsINReceived())
 169                           return PIPE_READYWAIT_NoError;
 170                 }
 171                 else
 172                 {
 173                         if (Pipe_IsOUTReady())
 174                           return PIPE_READYWAIT_NoError;
 175                 }
 176
 177                 if (Pipe_IsStalled())
 178                   return PIPE_READYWAIT_PipeStalled;
 179                 else if (USB_HostState == HOST_STATE_Unattached)
 180                   return PIPE_READYWAIT_DeviceDisconnected;
 181
 182                 uint16_t CurrentFrameNumber = USB_Host_GetFrameNumber();
 183
 184                 if (CurrentFrameNumber != PreviousFrameNumber)
 185                 {
 186                         PreviousFrameNumber = CurrentFrameNumber;
 187
 188                         if (!(TimeoutMSRem--))
 189                           return PIPE_READYWAIT_Timeout;
 190                 }
 191         }
 192 }
 193
 194 #endif
 195