Demos/Device/Joystick/Joystick.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 "Joystick.h"
  32
  33 USB_ClassInfo_HID_t Joystick_HID_Interface =
  34         {
  35                 .InterfaceNumber         = 0,
  36
  37                 .ReportINEndpointNumber  = JOYSTICK_EPNUM,
  38                 .ReportINEndpointSize    = JOYSTICK_EPSIZE,
  39
  40                 .ReportBufferSize        = sizeof(USB_JoystickReport_Data_t),
  41
  42                 .UsingReportProtocol     = true,
  43         };
  44
  45 int main(void)
  46 {
  47         SetupHardware();
  48
  49         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  50
  51         for (;;)
  52         {
  53                 USB_HID_USBTask(&Joystick_HID_Interface);
  54                 USB_USBTask();
  55         }
  56 }
  57
  58 void SetupHardware(void)
  59 {
  60         /* Disable watchdog if enabled by bootloader/fuses */
  61         MCUSR &= ~(1 << WDRF);
  62         wdt_disable();
  63
  64         /* Disable clock division */
  65         clock_prescale_set(clock_div_1);
  66
  67         /* Hardware Initialization */
  68         Joystick_Init();
  69         LEDs_Init();
  70         Buttons_Init();
  71         USB_Init();
  72 }
  73
  74 void EVENT_USB_Connect(void)
  75 {
  76         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
  77 }
  78
  79 void EVENT_USB_Disconnect(void)
  80 {
  81         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  82 }
  83
  84 void EVENT_USB_ConfigurationChanged(void)
  85 {
  86         LEDs_SetAllLEDs(LEDMASK_USB_READY);
  87
  88         if (!(USB_HID_ConfigureEndpoints(&Joystick_HID_Interface)))
  89           LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  90 }
  91
  92 void EVENT_USB_UnhandledControlPacket(void)
  93 {
  94         USB_HID_ProcessControlPacket(&Joystick_HID_Interface);
  95 }
  96
  97 void EVENT_USB_StartOfFrame(void)
  98 {
  99         USB_HID_RegisterStartOfFrame(&Joystick_HID_Interface);
 100 }
 101
 102 uint16_t CALLBACK_USB_HID_CreateNextHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo, void* ReportData)
 103 {
 104         USB_JoystickReport_Data_t* JoystickReport = (USB_JoystickReport_Data_t*)ReportData;
 105
 106         uint8_t JoyStatus_LCL    = Joystick_GetStatus();
 107         uint8_t ButtonStatus_LCL = Buttons_GetStatus();
 108
 109         if (JoyStatus_LCL & JOY_UP)
 110           JoystickReport->Y = -100;
 111         else if (JoyStatus_LCL & JOY_DOWN)
 112           JoystickReport->Y =  100;
 113
 114         if (JoyStatus_LCL & JOY_RIGHT)
 115           JoystickReport->X =  100;
 116         else if (JoyStatus_LCL & JOY_LEFT)
 117           JoystickReport->X = -100;
 118
 119         if (JoyStatus_LCL & JOY_PRESS)
 120           JoystickReport->Button  = (1 << 1);
 121
 122         if (ButtonStatus_LCL & BUTTONS_BUTTON1)
 123           JoystickReport->Button |= (1 << 0);
 124
 125         return sizeof(USB_JoystickReport_Data_t);
 126 }
 127
 128 void CALLBACK_USB_HID_ProcessReceivedHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo, void* ReportData, uint16_t ReportSize)
 129 {
 130         // Unused (but mandatory for the HID class driver) in this demo, since there are no Host->Device reports
 131 }