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