VirtualSerialMouse.c 8.51 KB
Newer Older
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
17
18
  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
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
  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.
 */
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
#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();
91

92
93
94
95
96
97
	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
	sei();

	for (;;)
	{
		CheckJoystickMovement();
98

99
		/* 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

		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;
130

131
132
133
134
135
136
137
138
139
140
141
142
	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;
143

144
145
146
	if ((ReportString != NULL) && (ActionSent == false))
	{
		ActionSent = true;
147

148
		CDC_Device_SendString(&VirtualSerial_CDC_Interface, ReportString);
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
	}
}

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

	USB_Device_EnableSOFEvents();
173

174
	LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
175
176
}

177
178
/** Event handler for the library USB Control Request reception event. */
void EVENT_USB_Device_ControlRequest(void)
179
180
181
182
183
184
185
186
187
188
189
190
191
{
	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
 *  \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
194
 *  \param[in]     ReportType  Type of the report to create, either HID_REPORT_ITEM_In or HID_REPORT_ITEM_Feature
195
196
 *  \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
{
	USB_MouseReport_Data_t* MouseReport = (USB_MouseReport_Data_t*)ReportData;
207

208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
	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);
223

224
225
	if (ButtonStatus_LCL & BUTTONS_BUTTON1)
	  MouseReport->Button |= (1 << 1);
226

227
228
229
230
231
232
233
	*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
 *  \param[in] ReportID    Report ID of the received report from the host
235
 *  \param[in] ReportType  The type of report that the host has sent, either HID_REPORT_ITEM_Out or HID_REPORT_ITEM_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
}
247