DeviceFunctions.c 5.48 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
/*
             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.
*/

/** \file
 *
 *  Device Mode USB Mouse functionality for the MouseHostDevice demo. This file contains the Device mode
 *  USB Mouse related code of the demo and is responsible for all the Device mode Mouse functionality.
 */

#include "DeviceFunctions.h"

/** Buffer to hold the previously generated Mouse Device 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_Device_Interface =
	{
		.Config =
			{
50
				.InterfaceNumber            = 0,
51

52
53
54
				.ReportINEndpointNumber     = MOUSE_EPNUM,
				.ReportINEndpointSize       = MOUSE_EPSIZE,
				.ReportINEndpointDoubleBank = false,
55

56
57
				.PrevReportINBuffer         = PrevMouseHIDReportBuffer,
				.PrevReportINBufferSize     = sizeof(PrevMouseHIDReportBuffer),
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
100
101
102
103
104
105
106
			},
	};
	

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

/** Event handler for the library USB Suspend 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)
{
	LEDs_SetAllLEDs(LEDMASK_USB_READY);

	if (!(HID_Device_ConfigureEndpoints(&Mouse_HID_Device_Interface)))
	  LEDs_SetAllLEDs(LEDMASK_USB_ERROR);

	USB_Device_EnableSOFEvents();
}

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

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

/** HID class driver callback function for the creation of HID reports to the host.
 *
 *  \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[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
 *
 *  \return Boolean true to force the sending of the report, false to let the library determine if it needs to be sent
 */
bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo, uint8_t* const ReportID,
107
                                         const uint8_t ReportType, void* ReportData, uint16_t* ReportSize)
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
{
	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_RIGHT)
	  MouseReport->X =  1;
	else if (JoyStatus_LCL & JOY_LEFT)
	  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
 *  \param[in] ReportID  Report ID of the received report from the host
 *  \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
 */
void CALLBACK_HID_Device_ProcessHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo, const uint8_t ReportID,
                                          const void* ReportData, const uint16_t ReportSize)
{
	// Unused (but mandatory for the HID class driver) in this demo, since there are no Host->Device reports
}