HID.c 5.82 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
/*
             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.
*/

31
32
33
#include "../../HighLevel/USBMode.h"
#if defined(USB_CAN_BE_DEVICE)

34
35
#include "HID.h"

36
void HID_Device_ProcessControlPacket(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo)
37
38
39
40
{
	if (!(Endpoint_IsSETUPReceived()))
	  return;
	  
41
	if ((USB_ControlRequest.wIndex   != HIDInterfaceInfo->Config.InterfaceNumber) &&
42
	    (USB_ControlRequest.bRequest != REQ_SetIdle))
43
44
45
	{
		return;
	}
46
47
48
49
50
51
52
53

	switch (USB_ControlRequest.bRequest)
	{
		case REQ_GetReport:
			if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
			{
				Endpoint_ClearSETUP();	

54
				uint8_t  ReportINData[HID_MAX_REPORT_SIZE];
55
				uint16_t ReportINSize;
56
				uint8_t  ReportID = (USB_ControlRequest.wValue & 0xFF);
57
58

				memset(ReportINData, 0, sizeof(ReportINData));
59
				
60
				ReportINSize = CALLBACK_HID_Device_CreateHIDReport(HIDInterfaceInfo, &ReportID, ReportINData);
61
62
63
64
65
66
67
68
69
70
71
72
73

				Endpoint_Write_Control_Stream_LE(ReportINData, ReportINSize);
				Endpoint_ClearOUT();
			}
		
			break;
		case REQ_SetReport:
			if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
			{
				Endpoint_ClearSETUP();
				
				uint16_t ReportOUTSize = USB_ControlRequest.wLength;
				uint8_t  ReportOUTData[ReportOUTSize];
74
				uint8_t  ReportID = (USB_ControlRequest.wValue & 0xFF);
75
76
77
78

				Endpoint_Read_Control_Stream_LE(ReportOUTData, ReportOUTSize);
				Endpoint_ClearIN();
				
79
				CALLBACK_HID_Device_ProcessHIDReport(HIDInterfaceInfo, ReportID, ReportOUTData, ReportOUTSize);
80
81
82
83
84
85
86
87
			}
			
			break;
		case REQ_GetProtocol:
			if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
			{
				Endpoint_ClearSETUP();

88
				Endpoint_Write_Byte(HIDInterfaceInfo->State.UsingReportProtocol);
89
90
				Endpoint_ClearIN();

91
				Endpoint_ClearStatusStage();
92
93
94
95
96
97
98
99
			}
			
			break;
		case REQ_SetProtocol:
			if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
			{
				Endpoint_ClearSETUP();

100
				HIDInterfaceInfo->State.UsingReportProtocol = (USB_ControlRequest.wValue != 0x0000);
101
				
102
				Endpoint_ClearStatusStage();
103
104
105
106
107
108
			}
			
			break;
		case REQ_SetIdle:
			if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
			{
109
110
111
112
113
114
115
				if ((USB_ControlRequest.wIndex         == HIDInterfaceInfo->Config.InterfaceNumber) ||
				    (USB_ControlRequest.wValue & 0xFF) == 0)
				{
					Endpoint_ClearSETUP();
					
					HIDInterfaceInfo->State.IdleCount = ((USB_ControlRequest.wValue & 0xFF00) >> 6);
					
116
					Endpoint_ClearStatusStage();
117
				}
118
119
120
121
122
123
124
125
			}
			
			break;
		case REQ_GetIdle:
			if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
			{		
				Endpoint_ClearSETUP();
				
126
				Endpoint_Write_Byte(HIDInterfaceInfo->State.IdleCount >> 2);
127
128
				Endpoint_ClearIN();

129
				Endpoint_ClearStatusStage();
130
131
132
133
134
135
			}

			break;
	}
}

136
bool HID_Device_ConfigureEndpoints(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo)
137
{
138
139
	memset(&HIDInterfaceInfo->State, 0x00, sizeof(HIDInterfaceInfo->State));
	HIDInterfaceInfo->State.IdleCount = 500;
140
	HIDInterfaceInfo->State.UsingReportProtocol = true;
141

142
143
	if (!(Endpoint_ConfigureEndpoint(HIDInterfaceInfo->Config.ReportINEndpointNumber, EP_TYPE_INTERRUPT,
									 ENDPOINT_DIR_IN, HIDInterfaceInfo->Config.ReportINEndpointSize, ENDPOINT_BANK_SINGLE)))
144
145
146
147
148
149
150
	{
		return false;
	}
	
	return true;
}
		
151
void HID_Device_USBTask(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo)
152
{
153
154
	static uint8_t PreviousReportINData[HID_MAX_REPORT_SIZE];

155
	if (USB_DeviceState != DEVICE_STATE_Configured)
156
157
	  return;

158
	Endpoint_SelectEndpoint(HIDInterfaceInfo->Config.ReportINEndpointNumber);
159
	
160
	if (Endpoint_IsReadWriteAllowed())
161
	{
162
		uint8_t  ReportINData[HID_MAX_REPORT_SIZE];
163
		uint8_t  ReportID = 0;
164
		uint16_t ReportINSize;
165
166
167

		memset(ReportINData, 0, sizeof(ReportINData));

168
		ReportINSize  = CALLBACK_HID_Device_CreateHIDReport(HIDInterfaceInfo, &ReportID, ReportINData);
169

170
171
172
173
174
175
		bool StatesChanged     = (memcmp(ReportINData, PreviousReportINData, ReportINSize) != 0);
		bool IdlePeriodElapsed = (HIDInterfaceInfo->State.IdleCount && !(HIDInterfaceInfo->State.IdleMSRemaining));
		
		memcpy(PreviousReportINData, ReportINData, ReportINSize);

		if (ReportINSize && (StatesChanged || IdlePeriodElapsed))
176
		{
177
178
			HIDInterfaceInfo->State.IdleMSRemaining = HIDInterfaceInfo->State.IdleCount;

179
180
181
182
			if (ReportID)
			  Endpoint_Write_Stream_LE(&ReportID, sizeof(ReportID), NO_STREAM_CALLBACK);

			Endpoint_Write_Stream_LE(ReportINData, ReportINSize, NO_STREAM_CALLBACK);
183
		}
184
185
		
		Endpoint_ClearIN();
186
187
	}
}
188
189

#endif