Demos/Device/ClassDriver/KeyboardMouse/KeyboardMouse.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2011.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2011  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  *  Main source file for the KeyboardMouse demo. This file contains the main tasks of
  34  *  the demo and is responsible for the initial application hardware configuration.
  35  */
  36
  37 #include "KeyboardMouse.h"
  38
  39 /** Buffer to hold the previously generated Keyboard HID report, for comparison purposes inside the HID class driver. */
  40 static uint8_t PrevKeyboardHIDReportBuffer[sizeof(USB_KeyboardReport_Data_t)];
  41
  42 /** Buffer to hold the previously generated Mouse HID report, for comparison purposes inside the HID class driver. */
  43 static uint8_t PrevMouseHIDReportBuffer[sizeof(USB_MouseReport_Data_t)];
  44
  45 /** LUFA HID Class driver interface configuration and state information. This structure is
  46  *  passed to all HID Class driver functions, so that multiple instances of the same class
  47  *  within a device can be differentiated from one another. This is for the keyboard HID
  48  *  interface within the device.
  49  */
  50 USB_ClassInfo_HID_Device_t Keyboard_HID_Interface =
  51         {
  52                 .Config =
  53                         {
  54                                 .InterfaceNumber              = 0,
  55
  56                                 .ReportINEndpointNumber       = KEYBOARD_IN_EPNUM,
  57                                 .ReportINEndpointSize         = HID_EPSIZE,
  58                                 .ReportINEndpointDoubleBank   = false,
  59
  60                                 .PrevReportINBuffer           = PrevKeyboardHIDReportBuffer,
  61                                 .PrevReportINBufferSize       = sizeof(PrevKeyboardHIDReportBuffer),
  62                         },
  63         };
  64
  65 /** LUFA HID Class driver interface configuration and state information. This structure is
  66  *  passed to all HID Class driver functions, so that multiple instances of the same class
  67  *  within a device can be differentiated from one another. This is for the mouse HID
  68  *  interface within the device.
  69  */
  70 USB_ClassInfo_HID_Device_t Mouse_HID_Interface =
  71         {
  72                 .Config =
  73                         {
  74                                 .InterfaceNumber              = 1,
  75
  76                                 .ReportINEndpointNumber       = MOUSE_IN_EPNUM,
  77                                 .ReportINEndpointSize         = HID_EPSIZE,
  78
  79                                 .PrevReportINBuffer           = PrevMouseHIDReportBuffer,
  80                                 .PrevReportINBufferSize       = sizeof(PrevMouseHIDReportBuffer),
  81                         },
  82         };
  83
  84
  85 /** Main program entry point. This routine contains the overall program flow, including initial
  86  *  setup of all components and the main program loop.
  87  */
  88 int main(void)
  89 {
  90         SetupHardware();
  91
  92         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  93         sei();
  94
  95         for (;;)
  96         {
  97                 HID_Device_USBTask(&Keyboard_HID_Interface);
  98                 HID_Device_USBTask(&Mouse_HID_Interface);
  99                 USB_USBTask();
 100         }
 101 }
 102
 103 /** Configures the board hardware and chip peripherals for the demo's functionality. */
 104 void SetupHardware()
 105 {
 106         /* Disable watchdog if enabled by bootloader/fuses */
 107         MCUSR &= ~(1 << WDRF);
 108         wdt_disable();
 109
 110         /* Disable clock division */
 111         clock_prescale_set(clock_div_1);
 112
 113         /* Hardware Initialization */
 114         Joystick_Init();
 115         LEDs_Init();
 116         USB_Init();
 117 }
 118
 119 /** Event handler for the library USB Connection event. */
 120 void EVENT_USB_Device_Connect(void)
 121 {
 122     LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
 123 }
 124
 125 /** Event handler for the library USB Disconnection event. */
 126 void EVENT_USB_Device_Disconnect(void)
 127 {
 128     LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 129 }
 130
 131 /** Event handler for the library USB Configuration Changed event. */
 132 void EVENT_USB_Device_ConfigurationChanged(void)
 133 {
 134         bool ConfigSuccess = true;
 135
 136         ConfigSuccess &= HID_Device_ConfigureEndpoints(&Keyboard_HID_Interface);
 137         ConfigSuccess &= HID_Device_ConfigureEndpoints(&Mouse_HID_Interface);
 138
 139         USB_Device_EnableSOFEvents();
 140
 141         LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
 142 }
 143
 144 /** Event handler for the library USB Control Request reception event. */
 145 void EVENT_USB_Device_ControlRequest(void)
 146 {
 147         HID_Device_ProcessControlRequest(&Keyboard_HID_Interface);
 148         HID_Device_ProcessControlRequest(&Mouse_HID_Interface);
 149 }
 150
 151 /** Event handler for the USB device Start Of Frame event. */
 152 void EVENT_USB_Device_StartOfFrame(void)
 153 {
 154         HID_Device_MillisecondElapsed(&Keyboard_HID_Interface);
 155         HID_Device_MillisecondElapsed(&Mouse_HID_Interface);
 156 }
 157
 158 /** HID class driver callback function for the creation of HID reports to the host.
 159  *
 160  *  \param[in]     HIDInterfaceInfo  Pointer to the HID class interface configuration structure being referenced
 161  *  \param[in,out] ReportID    Report ID requested by the host if non-zero, otherwise callback should set to the generated report ID
 162  *  \param[in]     ReportType  Type of the report to create, either HID_REPORT_ITEM_In or HID_REPORT_ITEM_Feature
 163  *  \param[out]    ReportData  Pointer to a buffer where the created report should be stored
 164  *  \param[out]    ReportSize  Number of bytes written in the report (or zero if no report is to be sent
 165  *
 166  *  \return Boolean true to force the sending of the report, false to let the library determine if it needs to be sent
 167  */
 168 bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo,
 169                                          uint8_t* const ReportID,
 170                                          const uint8_t ReportType,
 171                                          void* ReportData,
 172                                          uint16_t* const ReportSize)
 173 {
 174         uint8_t JoyStatus_LCL    = Joystick_GetStatus();
 175         uint8_t ButtonStatus_LCL = Buttons_GetStatus();
 176
 177         /* Determine which interface must have its report generated */
 178         if (HIDInterfaceInfo == &Keyboard_HID_Interface)
 179         {
 180                 USB_KeyboardReport_Data_t* KeyboardReport = (USB_KeyboardReport_Data_t*)ReportData;
 181
 182                 /* If first board button not being held down, no keyboard report */
 183                 if (!(ButtonStatus_LCL & BUTTONS_BUTTON1))
 184                   return 0;
 185
 186                 KeyboardReport->Modifier = HID_KEYBOARD_MODIFER_LEFTSHIFT;
 187
 188                 if (JoyStatus_LCL & JOY_UP)
 189                   KeyboardReport->KeyCode[0] = HID_KEYBOARD_SC_A;
 190                 else if (JoyStatus_LCL & JOY_DOWN)
 191                   KeyboardReport->KeyCode[0] = HID_KEYBOARD_SC_B;
 192
 193                 if (JoyStatus_LCL & JOY_LEFT)
 194                   KeyboardReport->KeyCode[0] = HID_KEYBOARD_SC_C;
 195                 else if (JoyStatus_LCL & JOY_RIGHT)
 196                   KeyboardReport->KeyCode[0] = HID_KEYBOARD_SC_D;
 197
 198                 if (JoyStatus_LCL & JOY_PRESS)
 199                   KeyboardReport->KeyCode[0] = HID_KEYBOARD_SC_E;
 200
 201                 *ReportSize = sizeof(USB_KeyboardReport_Data_t);
 202                 return false;
 203         }
 204         else
 205         {
 206                 USB_MouseReport_Data_t* MouseReport = (USB_MouseReport_Data_t*)ReportData;
 207
 208                 /* If first board button being held down, no mouse report */
 209                 if (ButtonStatus_LCL & BUTTONS_BUTTON1)
 210                   return 0;
 211
 212                 if (JoyStatus_LCL & JOY_UP)
 213                   MouseReport->Y = -1;
 214                 else if (JoyStatus_LCL & JOY_DOWN)
 215                   MouseReport->Y =  1;
 216
 217                 if (JoyStatus_LCL & JOY_LEFT)
 218                   MouseReport->X = -1;
 219                 else if (JoyStatus_LCL & JOY_RIGHT)
 220                   MouseReport->X =  1;
 221
 222                 if (JoyStatus_LCL & JOY_PRESS)
 223                   MouseReport->Button |= (1 << 0);
 224
 225                 *ReportSize = sizeof(USB_MouseReport_Data_t);
 226                 return true;
 227         }
 228 }
 229
 230 /** HID class driver callback function for the processing of HID reports from the host.
 231  *
 232  *  \param[in] HIDInterfaceInfo  Pointer to the HID class interface configuration structure being referenced
 233  *  \param[in] ReportID    Report ID of the received report from the host
 234  *  \param[in] ReportType  The type of report that the host has sent, either HID_REPORT_ITEM_Out or HID_REPORT_ITEM_Feature
 235  *  \param[in] ReportData  Pointer to a buffer where the received report has been stored
 236  *  \param[in] ReportSize  Size in bytes of the received HID report
 237  */
 238 void CALLBACK_HID_Device_ProcessHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo,
 239                                           const uint8_t ReportID,
 240                                           const uint8_t ReportType,
 241                                           const void* ReportData,
 242                                           const uint16_t ReportSize)
 243 {
 244         if (HIDInterfaceInfo == &Keyboard_HID_Interface)
 245         {
 246                 uint8_t  LEDMask   = LEDS_NO_LEDS;
 247                 uint8_t* LEDReport = (uint8_t*)ReportData;
 248
 249                 if (*LEDReport & HID_KEYBOARD_LED_NUMLOCK)
 250                   LEDMask |= LEDS_LED1;
 251
 252                 if (*LEDReport & HID_KEYBOARD_LED_CAPSLOCK)
 253                   LEDMask |= LEDS_LED3;
 254
 255                 if (*LEDReport & HID_KEYBOARD_LED_SCROLLLOCK)
 256                   LEDMask |= LEDS_LED4;
 257
 258                 LEDs_SetAllLEDs(LEDMask);
 259         }
 260 }