LUFA/Drivers/USB/Core/AVR8/Endpoint_AVR8.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2013.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2013  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 disclaims 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 "../../../../Common/Common.h"
  32 #if (ARCH == ARCH_AVR8)
  33
  34 #define  __INCLUDE_FROM_USB_DRIVER
  35 #include "../USBMode.h"
  36
  37 #if defined(USB_CAN_BE_DEVICE)
  38
  39 #include "../Endpoint.h"
  40
  41 #if !defined(FIXED_CONTROL_ENDPOINT_SIZE)
  42 uint8_t USB_Device_ControlEndpointSize = ENDPOINT_CONTROLEP_DEFAULT_SIZE;
  43 #endif
  44
  45 bool Endpoint_ConfigureEndpointTable(const USB_Endpoint_Table_t* const Table,
  46                                      const uint8_t Entries)
  47 {
  48         for (uint8_t i = 0; i < Entries; i++)
  49         {
  50                 if (!(Table[i].Address))
  51                   continue;
  52
  53                 if (!(Endpoint_ConfigureEndpoint(Table[i].Address, Table[i].Type, Table[i].Size, Table[i].Banks)))
  54                   return false;
  55         }
  56
  57         return true;
  58 }
  59
  60 bool Endpoint_ConfigureEndpoint_Prv(const uint8_t Number,
  61                                     const uint8_t UECFG0XData,
  62                                     const uint8_t UECFG1XData)
  63 {
  64 #if defined(CONTROL_ONLY_DEVICE) || defined(ORDERED_EP_CONFIG)
  65         Endpoint_SelectEndpoint(Number);
  66         Endpoint_EnableEndpoint();
  67
  68         UECFG1X = 0;
  69         UECFG0X = UECFG0XData;
  70         UECFG1X = UECFG1XData;
  71
  72         return Endpoint_IsConfigured();
  73 #else
  74         for (uint8_t EPNum = Number; EPNum < ENDPOINT_TOTAL_ENDPOINTS; EPNum++)
  75         {
  76                 uint8_t UECFG0XTemp;
  77                 uint8_t UECFG1XTemp;
  78                 uint8_t UEIENXTemp;
  79
  80                 Endpoint_SelectEndpoint(EPNum);
  81
  82                 if (EPNum == Number)
  83                 {
  84                         UECFG0XTemp = UECFG0XData;
  85                         UECFG1XTemp = UECFG1XData;
  86                         UEIENXTemp  = 0;
  87                 }
  88                 else
  89                 {
  90                         UECFG0XTemp = UECFG0X;
  91                         UECFG1XTemp = UECFG1X;
  92                         UEIENXTemp  = UEIENX;
  93                 }
  94
  95                 if (!(UECFG1XTemp & (1 << ALLOC)))
  96                   continue;
  97
  98                 Endpoint_DisableEndpoint();
  99                 UECFG1X &= ~(1 << ALLOC);
 100
 101                 Endpoint_EnableEndpoint();
 102                 UECFG0X = UECFG0XTemp;
 103                 UECFG1X = UECFG1XTemp;
 104                 UEIENX  = UEIENXTemp;
 105
 106                 if (!(Endpoint_IsConfigured()))
 107                   return false;
 108         }
 109
 110         Endpoint_SelectEndpoint(Number);
 111         return true;
 112 #endif
 113 }
 114
 115 void Endpoint_ClearEndpoints(void)
 116 {
 117         UEINT = 0;
 118
 119         for (uint8_t EPNum = 0; EPNum < ENDPOINT_TOTAL_ENDPOINTS; EPNum++)
 120         {
 121                 Endpoint_SelectEndpoint(EPNum);
 122                 UEIENX  = 0;
 123                 UEINTX  = 0;
 124                 UECFG1X = 0;
 125                 Endpoint_DisableEndpoint();
 126         }
 127 }
 128
 129 void Endpoint_ClearStatusStage(void)
 130 {
 131         if (USB_ControlRequest.bmRequestType & REQDIR_DEVICETOHOST)
 132         {
 133                 while (!(Endpoint_IsOUTReceived()))
 134                 {
 135                         if (USB_DeviceState == DEVICE_STATE_Unattached)
 136                           return;
 137                 }
 138
 139                 Endpoint_ClearOUT();
 140         }
 141         else
 142         {
 143                 while (!(Endpoint_IsINReady()))
 144                 {
 145                         if (USB_DeviceState == DEVICE_STATE_Unattached)
 146                           return;
 147                 }
 148
 149                 Endpoint_ClearIN();
 150         }
 151 }
 152
 153 #if !defined(CONTROL_ONLY_DEVICE)
 154 uint8_t Endpoint_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_Device_GetFrameNumber();
 163
 164         for (;;)
 165         {
 166                 if (Endpoint_GetEndpointDirection() == ENDPOINT_DIR_IN)
 167                 {
 168                         if (Endpoint_IsINReady())
 169                           return ENDPOINT_READYWAIT_NoError;
 170                 }
 171                 else
 172                 {
 173                         if (Endpoint_IsOUTReceived())
 174                           return ENDPOINT_READYWAIT_NoError;
 175                 }
 176
 177                 uint8_t USB_DeviceState_LCL = USB_DeviceState;
 178
 179                 if (USB_DeviceState_LCL == DEVICE_STATE_Unattached)
 180                   return ENDPOINT_READYWAIT_DeviceDisconnected;
 181                 else if (USB_DeviceState_LCL == DEVICE_STATE_Suspended)
 182                   return ENDPOINT_READYWAIT_BusSuspended;
 183                 else if (Endpoint_IsStalled())
 184                   return ENDPOINT_READYWAIT_EndpointStalled;
 185
 186                 uint16_t CurrentFrameNumber = USB_Device_GetFrameNumber();
 187
 188                 if (CurrentFrameNumber != PreviousFrameNumber)
 189                 {
 190                         PreviousFrameNumber = CurrentFrameNumber;
 191
 192                         if (!(TimeoutMSRem--))
 193                           return ENDPOINT_READYWAIT_Timeout;
 194                 }
 195         }
 196 }
 197 #endif
 198
 199 #endif
 200
 201 #endif