LUFA/Drivers/USB/Class/Device/HID.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2009.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6       www.fourwalledcubicle.com
   7 */
   8
   9 /*
  10   Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, and distribute this software
  13   and its documentation for any purpose and without fee is hereby
  14   granted, provided that the above copyright notice appear in all
  15   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 #include "../../HighLevel/USBMode.h"
  32 #if defined(USB_CAN_BE_DEVICE)
  33
  34 #include "HID.h"
  35
  36 void HID_Device_ProcessControlPacket(USB_ClassInfo_HID_t* HIDInterfaceInfo)
  37 {
  38         if (!(Endpoint_IsSETUPReceived()))
  39           return;
  40
  41         if (USB_ControlRequest.wIndex != HIDInterfaceInfo->InterfaceNumber)
  42           return;
  43
  44         switch (USB_ControlRequest.bRequest)
  45         {
  46                 case REQ_GetReport:
  47                         if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
  48                         {
  49                                 Endpoint_ClearSETUP();
  50
  51                                 uint8_t  ReportINData[HIDInterfaceInfo->ReportINBufferSize];
  52                                 uint16_t ReportINSize;
  53                                 uint8_t  ReportID = (USB_ControlRequest.wValue & 0xFF);
  54
  55                                 memset(ReportINData, 0, sizeof(ReportINData));
  56
  57                                 ReportINSize = CALLBACK_HID_Device_CreateHIDReport(HIDInterfaceInfo, &ReportID, ReportINData);
  58
  59                                 Endpoint_Write_Control_Stream_LE(ReportINData, ReportINSize);
  60                                 Endpoint_ClearOUT();
  61                         }
  62
  63                         break;
  64                 case REQ_SetReport:
  65                         if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
  66                         {
  67                                 Endpoint_ClearSETUP();
  68
  69                                 uint16_t ReportOUTSize = USB_ControlRequest.wLength;
  70                                 uint8_t  ReportOUTData[ReportOUTSize];
  71                                 uint8_t  ReportID = (USB_ControlRequest.wValue & 0xFF);
  72
  73                                 Endpoint_Read_Control_Stream_LE(ReportOUTData, ReportOUTSize);
  74                                 Endpoint_ClearIN();
  75
  76                                 CALLBACK_HID_Device_ProcessHIDReport(HIDInterfaceInfo, ReportID, ReportOUTData, ReportOUTSize);
  77                         }
  78
  79                         break;
  80                 case REQ_GetProtocol:
  81                         if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
  82                         {
  83                                 Endpoint_ClearSETUP();
  84
  85                                 Endpoint_Write_Byte(HIDInterfaceInfo->UsingReportProtocol);
  86                                 Endpoint_ClearIN();
  87
  88                                 while (!(Endpoint_IsOUTReceived()));
  89                                 Endpoint_ClearOUT();
  90                         }
  91
  92                         break;
  93                 case REQ_SetProtocol:
  94                         if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
  95                         {
  96                                 Endpoint_ClearSETUP();
  97
  98                                 HIDInterfaceInfo->UsingReportProtocol = (USB_ControlRequest.wValue != 0x0000);
  99
 100                                 while (!(Endpoint_IsINReady()));
 101                                 Endpoint_ClearIN();
 102                         }
 103
 104                         break;
 105                 case REQ_SetIdle:
 106                         if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
 107                         {
 108                                 Endpoint_ClearSETUP();
 109
 110                                 HIDInterfaceInfo->IdleCount = ((USB_ControlRequest.wValue >> 8) << 2);
 111
 112                                 while (!(Endpoint_IsINReady()));
 113                                 Endpoint_ClearIN();
 114                         }
 115
 116                         break;
 117                 case REQ_GetIdle:
 118                         if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
 119                         {
 120                                 Endpoint_ClearSETUP();
 121
 122                                 Endpoint_Write_Byte(HIDInterfaceInfo->IdleCount >> 2);
 123                                 Endpoint_ClearIN();
 124
 125                                 while (!(Endpoint_IsOUTReceived()));
 126                                 Endpoint_ClearOUT();
 127                         }
 128
 129                         break;
 130         }
 131 }
 132
 133 bool HID_Device_ConfigureEndpoints(USB_ClassInfo_HID_t* HIDInterfaceInfo)
 134 {
 135         HIDInterfaceInfo->UsingReportProtocol = true;
 136
 137         if (!(Endpoint_ConfigureEndpoint(HIDInterfaceInfo->ReportINEndpointNumber, EP_TYPE_INTERRUPT,
 138                                                                          ENDPOINT_DIR_IN, HIDInterfaceInfo->ReportINEndpointSize, ENDPOINT_BANK_SINGLE)))
 139         {
 140                 return false;
 141         }
 142
 143         return true;
 144 }
 145
 146 void HID_Device_USBTask(USB_ClassInfo_HID_t* HIDInterfaceInfo)
 147 {
 148         if (!(USB_IsConnected))
 149           return;
 150
 151         Endpoint_SelectEndpoint(HIDInterfaceInfo->ReportINEndpointNumber);
 152
 153         if (Endpoint_IsReadWriteAllowed() &&
 154             !(HIDInterfaceInfo->IdleCount && HIDInterfaceInfo->IdleMSRemaining))
 155         {
 156                 if (HIDInterfaceInfo->IdleCount && !(HIDInterfaceInfo->IdleMSRemaining))
 157                   HIDInterfaceInfo->IdleMSRemaining = HIDInterfaceInfo->IdleCount;
 158
 159                 uint8_t  ReportINData[HIDInterfaceInfo->ReportINBufferSize];
 160                 uint16_t ReportINSize;
 161                 uint8_t  ReportID = 0;
 162
 163                 memset(ReportINData, 0, sizeof(ReportINData));
 164
 165                 ReportINSize = CALLBACK_HID_Device_CreateHIDReport(HIDInterfaceInfo, &ReportID, ReportINData);
 166
 167                 if (ReportINSize)
 168                 {
 169                         if (ReportID)
 170                           Endpoint_Write_Stream_LE(&ReportID, sizeof(ReportID), NO_STREAM_CALLBACK);
 171
 172                         Endpoint_Write_Stream_LE(ReportINData, ReportINSize, NO_STREAM_CALLBACK);
 173                 }
 174
 175                 Endpoint_ClearIN();
 176         }
 177 }
 178
 179 #endif