LUFA/Drivers/USB/Core/UC3/Endpoint_UC3.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_UC3)
  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 volatile uint32_t USB_Endpoint_SelectedEndpoint = ENDPOINT_CONTROLEP;
  46 volatile uint8_t* USB_Endpoint_FIFOPos[ENDPOINT_TOTAL_ENDPOINTS];
  47
  48 bool Endpoint_ConfigureEndpointTable(const USB_Endpoint_Table_t* const Table,
  49                                      const uint8_t Entries)
  50 {
  51         for (uint8_t i = 0; i < Entries; i++)
  52         {
  53                 if (!(Table[i].Address))
  54                   continue;
  55
  56                 if (!(Endpoint_ConfigureEndpoint(Table[i].Address, Table[i].Type, Table[i].Size, Table[i].Banks)))
  57                 {
  58                         return false;
  59                 }
  60         }
  61
  62         return true;
  63 }
  64
  65 bool Endpoint_ConfigureEndpoint_Prv(const uint8_t Number,
  66                                     const uint32_t UECFG0Data)
  67 {
  68         USB_Endpoint_FIFOPos[Number] = &AVR32_USBB_SLAVE[Number * ENDPOINT_HSB_ADDRESS_SPACE_SIZE];
  69
  70 #if defined(CONTROL_ONLY_DEVICE) || defined(ORDERED_EP_CONFIG)
  71         Endpoint_SelectEndpoint(Number);
  72         Endpoint_EnableEndpoint();
  73
  74         (&AVR32_USBB.uecfg0)[Number] = 0;
  75         (&AVR32_USBB.uecfg0)[Number] = UECFG0Data;
  76
  77         return Endpoint_IsConfigured();
  78 #else
  79         for (uint8_t EPNum = Number; EPNum < ENDPOINT_TOTAL_ENDPOINTS; EPNum++)
  80         {
  81                 uint32_t UECFG0Temp;
  82
  83                 Endpoint_SelectEndpoint(EPNum);
  84
  85                 if (EPNum == Number)
  86                 {
  87                         UECFG0Temp = UECFG0Data;
  88                 }
  89                 else
  90                 {
  91                         UECFG0Temp = (&AVR32_USBB.uecfg0)[EPNum];
  92                 }
  93
  94                 if (!(UECFG0Temp & AVR32_USBB_ALLOC_MASK))
  95                   continue;
  96
  97                 Endpoint_DisableEndpoint();
  98                 (&AVR32_USBB.uecfg0)[EPNum] &= ~AVR32_USBB_ALLOC_MASK;
  99
 100                 Endpoint_EnableEndpoint();
 101                 (&AVR32_USBB.uecfg0)[EPNum] = UECFG0Temp;
 102
 103                 if (!(Endpoint_IsConfigured()))
 104                   return false;
 105         }
 106
 107         Endpoint_SelectEndpoint(Number);
 108         return true;
 109 #endif
 110 }
 111
 112 void Endpoint_ClearEndpoints(void)
 113 {
 114         for (uint8_t EPNum = 0; EPNum < ENDPOINT_TOTAL_ENDPOINTS; EPNum++)
 115         {
 116                 Endpoint_SelectEndpoint(EPNum);
 117                 (&AVR32_USBB.uecfg0)[EPNum]    = 0;
 118                 (&AVR32_USBB.uecon0clr)[EPNum] = -1;
 119                 USB_Endpoint_FIFOPos[EPNum]    = &AVR32_USBB_SLAVE[EPNum * 0x10000];
 120                 Endpoint_DisableEndpoint();
 121         }
 122 }
 123
 124 void Endpoint_ClearStatusStage(void)
 125 {
 126         if (USB_ControlRequest.bmRequestType & REQDIR_DEVICETOHOST)
 127         {
 128                 while (!(Endpoint_IsOUTReceived()))
 129                 {
 130                         if (USB_DeviceState == DEVICE_STATE_Unattached)
 131                           return;
 132                 }
 133
 134                 Endpoint_ClearOUT();
 135         }
 136         else
 137         {
 138                 while (!(Endpoint_IsINReady()))
 139                 {
 140                         if (USB_DeviceState == DEVICE_STATE_Unattached)
 141                           return;
 142                 }
 143
 144                 Endpoint_ClearIN();
 145         }
 146 }
 147
 148 #if !defined(CONTROL_ONLY_DEVICE)
 149 uint8_t Endpoint_WaitUntilReady(void)
 150 {
 151         #if (USB_STREAM_TIMEOUT_MS < 0xFF)
 152         uint8_t  TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
 153         #else
 154         uint16_t TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
 155         #endif
 156
 157         uint16_t PreviousFrameNumber = USB_Device_GetFrameNumber();
 158
 159         for (;;)
 160         {
 161                 if (Endpoint_GetEndpointDirection() == ENDPOINT_DIR_IN)
 162                 {
 163                         if (Endpoint_IsINReady())
 164                           return ENDPOINT_READYWAIT_NoError;
 165                 }
 166                 else
 167                 {
 168                         if (Endpoint_IsOUTReceived())
 169                           return ENDPOINT_READYWAIT_NoError;
 170                 }
 171
 172                 uint8_t USB_DeviceState_LCL = USB_DeviceState;
 173
 174                 if (USB_DeviceState_LCL == DEVICE_STATE_Unattached)
 175                   return ENDPOINT_READYWAIT_DeviceDisconnected;
 176                 else if (USB_DeviceState_LCL == DEVICE_STATE_Suspended)
 177                   return ENDPOINT_READYWAIT_BusSuspended;
 178                 else if (Endpoint_IsStalled())
 179                   return ENDPOINT_READYWAIT_EndpointStalled;
 180
 181                 uint16_t CurrentFrameNumber = USB_Device_GetFrameNumber();
 182
 183                 if (CurrentFrameNumber != PreviousFrameNumber)
 184                 {
 185                         PreviousFrameNumber = CurrentFrameNumber;
 186
 187                         if (!(TimeoutMSRem--))
 188                           return ENDPOINT_READYWAIT_Timeout;
 189                 }
 190         }
 191 }
 192 #endif
 193
 194 #endif
 195
 196 #endif