Demos/DualRole/ClassDriver/MouseHostDevice/DeviceFunctions.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 /** \file
  32  *
  33  *  Device Mode USB Mouse functionality for the MouseHostDevice demo. This file contains the Device mode
  34  *  USB Mouse related code of the demo and is responsible for all the Device mode Mouse functionality.
  35  */
  36
  37 #include "DeviceFunctions.h"
  38
  39 /** Buffer to hold the previously generated Mouse Device HID report, for comparison purposes inside the HID class driver. */
  40 uint8_t PrevMouseHIDReportBuffer[sizeof(USB_MouseReport_Data_t)];
  41
  42 /** LUFA HID Class driver interface configuration and state information. This structure is
  43  *  passed to all HID Class driver functions, so that multiple instances of the same class
  44  *  within a device can be differentiated from one another.
  45  */
  46 USB_ClassInfo_HID_Device_t Mouse_HID_Device_Interface =
  47         {
  48                 .Config =
  49                         {
  50                                 .InterfaceNumber            = 0,
  51
  52                                 .ReportINEndpointNumber     = MOUSE_EPNUM,
  53                                 .ReportINEndpointSize       = MOUSE_EPSIZE,
  54                                 .ReportINEndpointDoubleBank = false,
  55
  56                                 .PrevReportINBuffer         = PrevMouseHIDReportBuffer,
  57                                 .PrevReportINBufferSize     = sizeof(PrevMouseHIDReportBuffer),
  58                         },
  59         };
  60
  61
  62 /** Event handler for the library USB WakeUp event. */
  63 void EVENT_USB_Device_Connect(void)
  64 {
  65         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
  66 }
  67
  68 /** Event handler for the library USB Suspend event. */
  69 void EVENT_USB_Device_Disconnect(void)
  70 {
  71         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  72 }
  73
  74 /** Event handler for the library USB Configuration Changed event. */
  75 void EVENT_USB_Device_ConfigurationChanged(void)
  76 {
  77         LEDs_SetAllLEDs(LEDMASK_USB_READY);
  78
  79         if (!(HID_Device_ConfigureEndpoints(&Mouse_HID_Device_Interface)))
  80           LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  81
  82         USB_Device_EnableSOFEvents();
  83 }
  84
  85 /** Event handler for the library USB Unhandled Control Request event. */
  86 void EVENT_USB_Device_UnhandledControlRequest(void)
  87 {
  88         HID_Device_ProcessControlRequest(&Mouse_HID_Device_Interface);
  89 }
  90
  91 /** Event handler for the USB device Start Of Frame event. */
  92 void EVENT_USB_Device_StartOfFrame(void)
  93 {
  94         HID_Device_MillisecondElapsed(&Mouse_HID_Device_Interface);
  95 }
  96
  97 /** HID class driver callback function for the creation of HID reports to the host.
  98  *
  99  *  \param[in] HIDInterfaceInfo  Pointer to the HID class interface configuration structure being referenced
 100  *  \param[in,out] ReportID  Report ID requested by the host if non-zero, otherwise callback should set to the generated report ID
 101  *  \param[in] ReportType  Type of the report to create, either REPORT_ITEM_TYPE_In or REPORT_ITEM_TYPE_Feature
 102  *  \param[out] ReportData  Pointer to a buffer where the created report should be stored
 103  *  \param[out] ReportSize  Number of bytes written in the report (or zero if no report is to be sent
 104  *
 105  *  \return Boolean true to force the sending of the report, false to let the library determine if it needs to be sent
 106  */
 107 bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo, uint8_t* const ReportID,
 108                                          const uint8_t ReportType, void* ReportData, uint16_t* ReportSize)
 109 {
 110         USB_MouseReport_Data_t* MouseReport = (USB_MouseReport_Data_t*)ReportData;
 111
 112         uint8_t JoyStatus_LCL    = Joystick_GetStatus();
 113         uint8_t ButtonStatus_LCL = Buttons_GetStatus();
 114
 115         if (JoyStatus_LCL & JOY_UP)
 116           MouseReport->Y = -1;
 117         else if (JoyStatus_LCL & JOY_DOWN)
 118           MouseReport->Y =  1;
 119
 120         if (JoyStatus_LCL & JOY_RIGHT)
 121           MouseReport->X =  1;
 122         else if (JoyStatus_LCL & JOY_LEFT)
 123           MouseReport->X = -1;
 124
 125         if (JoyStatus_LCL & JOY_PRESS)
 126           MouseReport->Button |= (1 << 0);
 127
 128         if (ButtonStatus_LCL & BUTTONS_BUTTON1)
 129           MouseReport->Button |= (1 << 1);
 130
 131         *ReportSize = sizeof(USB_MouseReport_Data_t);
 132         return true;
 133 }
 134
 135 /** HID class driver callback function for the processing of HID reports from the host.
 136  *
 137  *  \param[in] HIDInterfaceInfo  Pointer to the HID class interface configuration structure being referenced
 138  *  \param[in] ReportID  Report ID of the received report from the host
 139  *  \param[in] ReportData  Pointer to a buffer where the created report has been stored
 140  *  \param[in] ReportSize  Size in bytes of the received HID report
 141  */
 142 void CALLBACK_HID_Device_ProcessHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo, const uint8_t ReportID,
 143                                           const void* ReportData, const uint16_t ReportSize)
 144 {
 145         // Unused (but mandatory for the HID class driver) in this demo, since there are no Host->Device reports
 146 }