Joystick.c 3.76 KB
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/*
             LUFA Library
     Copyright (C) Dean Camera, 2009.
              
  dean [at] fourwalledcubicle [dot] com
      www.fourwalledcubicle.com
*/

/*
  Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)

  Permission to use, copy, modify, and distribute this software
  and its documentation for any purpose and without fee is hereby
  granted, provided that the above copyright notice appear in all
  copies and that both that the copyright notice and this
  permission notice and warranty disclaimer appear in supporting
  documentation, and that the name of the author not be used in
  advertising or publicity pertaining to distribution of the
  software without specific, written prior permission.

  The author disclaim all warranties with regard to this
  software, including all implied warranties of merchantability
  and fitness.  In no event shall the author be liable for any
  special, indirect or consequential damages or any damages
  whatsoever resulting from loss of use, data or profits, whether
  in an action of contract, negligence or other tortious action,
  arising out of or in connection with the use or performance of
  this software.
*/

#include "Joystick.h"

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USB_ClassInfo_HID_t Joystick_HID_Interface =
	{
		.InterfaceNumber         = 0,

		.ReportINEndpointNumber  = JOYSTICK_EPNUM,
		.ReportINEndpointSize    = JOYSTICK_EPSIZE,
		
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		.ReportINBufferSize      = sizeof(USB_JoystickReport_Data_t),
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		.UsingReportProtocol     = true,
	};
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int main(void)
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{
	SetupHardware();
	
	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
	
	for (;;)
	{
		USB_HID_USBTask(&Joystick_HID_Interface);
		USB_USBTask();
	}
}

void SetupHardware(void)
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{
	/* Disable watchdog if enabled by bootloader/fuses */
	MCUSR &= ~(1 << WDRF);
	wdt_disable();

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	/* Disable clock division */
	clock_prescale_set(clock_div_1);
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	/* Hardware Initialization */
	Joystick_Init();
	LEDs_Init();
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	Buttons_Init();
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	USB_Init();
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	/* Millisecond timer initialization, with output compare interrupt enabled for the idle timing */
	OCR0A  = ((F_CPU / 64) / 1000);
	TCCR0A = (1 << WGM01);
	TCCR0B = ((1 << CS01) | (1 << CS00));
	TIMSK0 = (1 << OCIE0A);
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}

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void EVENT_USB_Connect(void)
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{
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	LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
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}

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void EVENT_USB_Disconnect(void)
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{
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	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
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}

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void EVENT_USB_ConfigurationChanged(void)
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{
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	LEDs_SetAllLEDs(LEDMASK_USB_READY);
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	if (!(USB_HID_ConfigureEndpoints(&Joystick_HID_Interface)))
	  LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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}

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void EVENT_USB_UnhandledControlPacket(void)
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{
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	USB_HID_ProcessControlPacket(&Joystick_HID_Interface);
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}

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ISR(TIMER0_COMPA_vect, ISR_BLOCK)
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{
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	if (Joystick_HID_Interface.IdleMSRemaining)
	  Joystick_HID_Interface.IdleMSRemaining--;
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}
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uint16_t CALLBACK_USB_HID_CreateNextHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo, void* ReportData)
{
	USB_JoystickReport_Data_t* JoystickReport = (USB_JoystickReport_Data_t*)ReportData;
	
	uint8_t JoyStatus_LCL    = Joystick_GetStatus();
	uint8_t ButtonStatus_LCL = Buttons_GetStatus();
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	if (JoyStatus_LCL & JOY_UP)
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	  JoystickReport->Y = -100;
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	else if (JoyStatus_LCL & JOY_DOWN)
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	  JoystickReport->Y =  100;
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	if (JoyStatus_LCL & JOY_RIGHT)
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	  JoystickReport->X =  100;
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	else if (JoyStatus_LCL & JOY_LEFT)
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	  JoystickReport->X = -100;
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	if (JoyStatus_LCL & JOY_PRESS)
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	  JoystickReport->Button  = (1 << 1);
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	if (ButtonStatus_LCL & BUTTONS_BUTTON1)
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	  JoystickReport->Button |= (1 << 0);
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	return sizeof(USB_JoystickReport_Data_t);
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}

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void CALLBACK_USB_HID_ProcessReceivedHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo, void* ReportData, uint16_t ReportSize)
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{
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	// Unused (but mandatory for the HID class driver) in this demo, since there are no Host->Device reports
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}