VirtualSerialMouse.c 8.58 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99
/*
             LUFA Library
     Copyright (C) Dean Camera, 2010.
              
  dean [at] fourwalledcubicle [dot] com
      www.fourwalledcubicle.com
*/

/*
  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)

  Permission to use, copy, modify, distribute, and sell this 
  software and its documentation for any purpose is hereby granted
  without fee, 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.
*/

/** \file
 *
 *  Main source file for the VirtualSerialMouse demo. This file contains the main tasks of
 *  the demo and is responsible for the initial application hardware configuration.
 */
 
#include "VirtualSerialMouse.h"

/** LUFA CDC Class driver interface configuration and state information. This structure is
 *  passed to all CDC Class driver functions, so that multiple instances of the same class
 *  within a device can be differentiated from one another.
 */
USB_ClassInfo_CDC_Device_t VirtualSerial_CDC_Interface =
	{
		.Config =
			{
				.ControlInterfaceNumber         = 0,

				.DataINEndpointNumber           = CDC_TX_EPNUM,
				.DataINEndpointSize             = CDC_TXRX_EPSIZE,
				.DataINEndpointDoubleBank       = false,

				.DataOUTEndpointNumber          = CDC_RX_EPNUM,
				.DataOUTEndpointSize            = CDC_TXRX_EPSIZE,
				.DataOUTEndpointDoubleBank      = false,

				.NotificationEndpointNumber     = CDC_NOTIFICATION_EPNUM,
				.NotificationEndpointSize       = CDC_NOTIFICATION_EPSIZE,
				.NotificationEndpointDoubleBank = false,
			},
	};

/** Buffer to hold the previously generated Mouse HID report, for comparison purposes inside the HID class driver. */
uint8_t PrevMouseHIDReportBuffer[sizeof(USB_MouseReport_Data_t)];

/** LUFA HID Class driver interface configuration and state information. This structure is
 *  passed to all HID Class driver functions, so that multiple instances of the same class
 *  within a device can be differentiated from one another.
 */
USB_ClassInfo_HID_Device_t Mouse_HID_Interface =
	{
		.Config =
			{
				.InterfaceNumber                = 2,

				.ReportINEndpointNumber         = MOUSE_EPNUM,
				.ReportINEndpointSize           = MOUSE_EPSIZE,
				.ReportINEndpointDoubleBank     = false,

				.PrevReportINBuffer             = PrevMouseHIDReportBuffer,
				.PrevReportINBufferSize         = sizeof(PrevMouseHIDReportBuffer),
			},
	};

/** Main program entry point. This routine contains the overall program flow, including initial
 *  setup of all components and the main program loop.
 */
int main(void)
{
	SetupHardware();
	
	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
	sei();

	for (;;)
	{
		CheckJoystickMovement();
		 
		/* Must throw away unused bytes from the host, or it will lock up while waiting for the device */
100
		CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166

		CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
		HID_Device_USBTask(&Mouse_HID_Interface);
		USB_USBTask();
	}
}

/** Configures the board hardware and chip peripherals for the demo's functionality. */
void SetupHardware(void)
{
	/* Disable watchdog if enabled by bootloader/fuses */
	MCUSR &= ~(1 << WDRF);
	wdt_disable();

	/* Disable clock division */
	clock_prescale_set(clock_div_1);

	/* Hardware Initialization */
	Joystick_Init();
	LEDs_Init();
	USB_Init();
}

/** Checks for changes in the position of the board joystick, sending strings to the host upon each change. */
void CheckJoystickMovement(void)
{
	uint8_t     JoyStatus_LCL = Joystick_GetStatus();
	char*       ReportString  = NULL;
	static bool ActionSent    = false;
	
	if (JoyStatus_LCL & JOY_UP)
	  ReportString = "Joystick Up\r\n";
	else if (JoyStatus_LCL & JOY_DOWN)
	  ReportString = "Joystick Down\r\n";
	else if (JoyStatus_LCL & JOY_LEFT)
	  ReportString = "Joystick Left\r\n";
	else if (JoyStatus_LCL & JOY_RIGHT)
	  ReportString = "Joystick Right\r\n";
	else if (JoyStatus_LCL & JOY_PRESS)
	  ReportString = "Joystick Pressed\r\n";
	else
	  ActionSent = false;
	  
	if ((ReportString != NULL) && (ActionSent == false))
	{
		ActionSent = true;
		
		CDC_Device_SendString(&VirtualSerial_CDC_Interface, ReportString, strlen(ReportString));		
	}
}

/** Event handler for the library USB Connection event. */
void EVENT_USB_Device_Connect(void)
{
	LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
}

/** Event handler for the library USB Disconnection event. */
void EVENT_USB_Device_Disconnect(void)
{
	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
}

/** Event handler for the library USB Configuration Changed event. */
void EVENT_USB_Device_ConfigurationChanged(void)
{
167
	bool ConfigSuccess = true;
168

169 170
	ConfigSuccess &= CDC_Device_ConfigureEndpoints(&VirtualSerial_CDC_Interface);
	ConfigSuccess &= HID_Device_ConfigureEndpoints(&Mouse_HID_Interface);
171 172

	USB_Device_EnableSOFEvents();
173 174

	LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);	  
175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191
}

/** Event handler for the library USB Unhandled Control Request event. */
void EVENT_USB_Device_UnhandledControlRequest(void)
{
	CDC_Device_ProcessControlRequest(&VirtualSerial_CDC_Interface);
	HID_Device_ProcessControlRequest(&Mouse_HID_Interface);
}

/** Event handler for the USB device Start Of Frame event. */
void EVENT_USB_Device_StartOfFrame(void)
{
	HID_Device_MillisecondElapsed(&Mouse_HID_Interface);
}

/** HID class driver callback function for the creation of HID reports to the host.
 *
192 193 194 195 196
 *  \param[in]     HIDInterfaceInfo  Pointer to the HID class interface configuration structure being referenced
 *  \param[in,out] ReportID    Report ID requested by the host if non-zero, otherwise callback should set to the generated report ID
 *  \param[in]     ReportType  Type of the report to create, either REPORT_ITEM_TYPE_In or REPORT_ITEM_TYPE_Feature
 *  \param[out]    ReportData  Pointer to a buffer where the created report should be stored
 *  \param[out]    ReportSize  Number of bytes written in the report (or zero if no report is to be sent
197 198 199
 *
 *  \return Boolean true to force the sending of the report, false to let the library determine if it needs to be sent
 */
200 201 202 203 204
bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo,
                                         uint8_t* const ReportID,
                                         const uint8_t ReportType,
                                         void* ReportData,
                                         uint16_t* const ReportSize)
205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233
{
	USB_MouseReport_Data_t* MouseReport = (USB_MouseReport_Data_t*)ReportData;
		
	uint8_t JoyStatus_LCL    = Joystick_GetStatus();
	uint8_t ButtonStatus_LCL = Buttons_GetStatus();

	if (JoyStatus_LCL & JOY_UP)
	  MouseReport->Y = -1;
	else if (JoyStatus_LCL & JOY_DOWN)
	  MouseReport->Y =  1;

	if (JoyStatus_LCL & JOY_LEFT)
	  MouseReport->X = -1;
	else if (JoyStatus_LCL & JOY_RIGHT)
	  MouseReport->X =  1;

	if (JoyStatus_LCL & JOY_PRESS)
	  MouseReport->Button |= (1 << 0);
	  
	if (ButtonStatus_LCL & BUTTONS_BUTTON1)
	  MouseReport->Button |= (1 << 1);
	
	*ReportSize = sizeof(USB_MouseReport_Data_t);
	return true;
}

/** HID class driver callback function for the processing of HID reports from the host.
 *
 *  \param[in] HIDInterfaceInfo  Pointer to the HID class interface configuration structure being referenced
234 235
 *  \param[in] ReportID    Report ID of the received report from the host
 *  \param[in] ReportType  The type of report that the host has sent, either REPORT_ITEM_TYPE_Out or REPORT_ITEM_TYPE_Feature
236 237 238
 *  \param[in] ReportData  Pointer to a buffer where the created report has been stored
 *  \param[in] ReportSize  Size in bytes of the received HID report
 */
239 240 241 242 243
void CALLBACK_HID_Device_ProcessHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo,
                                          const uint8_t ReportID,
                                          const uint8_t ReportType,
                                          const void* ReportData,
                                          const uint16_t ReportSize)
244 245 246
{
	// Unused (but mandatory for the HID class driver) in this demo, since there are no Host->Device reports
}