MouseHostWithParser.c 9.52 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
/*
             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
 *
 *  Main source file for the MouseHostWithParser demo. This file contains the main tasks of
 *  the demo and is responsible for the initial application hardware configuration.
 */
 
#include "MouseHostWithParser.h"

/** Main program entry point. This routine configures the hardware required by the application, then
 *  starts the scheduler to run the application tasks.
 */
int main(void)
43
44
45
{
	SetupHardware();

46
	puts_P(PSTR(ESC_FG_CYAN "Mouse HID Parser Host Demo running.\r\n" ESC_FG_WHITE));
47
48
49
50
51
52
53
54
55
56
57
58

	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);

	for (;;)
	{
		Mouse_HID_Task();
		USB_USBTask();
	}
}

/** Configures the board hardware and chip peripherals for the demo's functionality. */
void SetupHardware(void)
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
{
	/* Disable watchdog if enabled by bootloader/fuses */
	MCUSR &= ~(1 << WDRF);
	wdt_disable();

	/* Disable clock division */
	clock_prescale_set(clock_div_1);
	
	/* Hardware Initialization */
	SerialStream_Init(9600, false);
	LEDs_Init();
	USB_Init();
}

/** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
 *  starts the library USB task to begin the enumeration and USB management process.
 */
76
void EVENT_USB_Host_DeviceAttached(void)
77
{
78
	puts_P(PSTR(ESC_FG_GREEN "Device Attached.\r\n" ESC_FG_WHITE));
79
	LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
80
81
82
83
84
}

/** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
 *  stops the library USB task management process.
 */
85
void EVENT_USB_Host_DeviceUnattached(void)
86
{
87
	puts_P(PSTR(ESC_FG_GREEN "Device Unattached.\r\n" ESC_FG_WHITE));
88
	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
89
90
91
92
93
}

/** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
 *  enumerated by the host and is now ready to be used by the application.
 */
94
void EVENT_USB_Host_DeviceEnumerationComplete(void)
95
{
96
	LEDs_SetAllLEDs(LEDMASK_USB_READY);
97
98
99
}

/** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
100
void EVENT_USB_Host_HostError(const uint8_t ErrorCode)
101
102
103
{
	USB_ShutDown();

104
105
	puts_P(PSTR(ESC_FG_RED "Host Mode Error\r\n"));
	printf_P(PSTR(" -- Error Code %d\r\n" ESC_FG_WHITE), ErrorCode);
106

107
	LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
108
109
110
111
112
113
	for(;;);
}

/** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
 *  enumerating an attached USB device.
 */
114
void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode, const uint8_t SubErrorCode)
115
{
116
	puts_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"));
117
118
	printf_P(PSTR(" -- Error Code %d\r\n"), ErrorCode);
	printf_P(PSTR(" -- Sub Error Code %d\r\n"), SubErrorCode);
119
	printf_P(PSTR(" -- In State %d\r\n" ESC_FG_WHITE), USB_HostState);
120
	
121
	LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
122
123
124
125
126
}

/** Task to set the configuration of the attached device after it has been enumerated, and to read and process
 *  the HID report descriptor and HID reports from the device and display the results onto the board LEDs.
 */
127
void Mouse_HID_Task(void)
128
129
130
131
132
133
{
	uint8_t ErrorCode;

	/* Switch to determine what user-application handled host state the host state machine is in */
	switch (USB_HostState)
	{
134
		case HOST_STATE_Addressed:
135
136
137
138
139
140
			puts_P(PSTR("Getting Config Data.\r\n"));
		
			/* Get and process the configuration descriptor data */
			if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead)
			{
				if (ErrorCode == ControlError)
141
				  puts_P(PSTR(ESC_FG_RED "Control Error (Get Configuration).\r\n"));
142
				else
143
				  puts_P(PSTR(ESC_FG_RED "Invalid Device.\r\n"));
144

145
				printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
146
147
				
				/* Indicate error via status LEDs */
148
				LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
149
150

				/* Wait until USB device disconnected */
151
				USB_HostState = HOST_STATE_WaitForDeviceRemoval;
152
153
154
				break;
			}
		
155
156
157
			/* Set the device configuration to the first configuration (rarely do devices use multiple configurations) */
			if ((ErrorCode = USB_Host_SetDeviceConfiguration(1)) != HOST_SENDCONTROL_Successful)
			{
158
159
				puts_P(PSTR(ESC_FG_RED "Control Error (Set Configuration).\r\n"));
				printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
160
161
162
163
164

				/* Indicate error via status LEDs */
				LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
				
				/* Wait until USB device disconnected */
165
				USB_HostState = HOST_STATE_WaitForDeviceRemoval;
166
167
168
				break;
			}
			
169
170
171
172
173
			puts_P(PSTR("Processing HID Report.\r\n"));

			/* Get and process the device's first HID report descriptor */
			if ((ErrorCode = GetHIDReportData()) != ParseSuccessful)
			{
174
175
				puts_P(PSTR(ESC_FG_RED "Report Parse Error.\r\n"));
				printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
176
177
			
				/* Indicate error via status LEDs */
178
				LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
179
180
				
				/* Wait until USB device disconnected */
181
				USB_HostState = HOST_STATE_WaitForDeviceRemoval;
182
183
184
185
				break;			
			}

			puts_P(PSTR("Mouse Enumerated.\r\n"));
186
187

			USB_HostState = HOST_STATE_Configured;
188
			break;
189
		case HOST_STATE_Configured:
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
			/* Select and unfreeze mouse data pipe */
			Pipe_SelectPipe(MOUSE_DATAPIPE);	
			Pipe_Unfreeze();

			/* Check to see if a packet has been received */
			if (Pipe_IsINReceived())
			{
				/* Check if data has been received from the attached mouse */
				if (Pipe_IsReadWriteAllowed())
				{
					/* Create buffer big enough for the report */
					uint8_t MouseReport[Pipe_BytesInPipe()];

					/* Load in the mouse report */
					Pipe_Read_Stream_LE(MouseReport, Pipe_BytesInPipe());
				
					/* Process the read in mouse report from the device */
					ProcessMouseReport(MouseReport);
				}
				
				/* Clear the IN endpoint, ready for next data packet */
				Pipe_ClearIN();
			}

			/* Freeze mouse data pipe */
			Pipe_Freeze();
			break;
	}
}

/** Processes a read HID report from an attached mouse, extracting out elements via the HID parser results
 *  as required and displays movement and button presses on the board LEDs.
 *
223
 *  \param[in] MouseReport  Pointer to a HID report from an attached mouse device
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
 */
void ProcessMouseReport(uint8_t* MouseReport)
{
	uint8_t LEDMask = LEDS_NO_LEDS;

	/* Check each HID report item in turn, looking for mouse X/Y/button reports */
	for (uint8_t ReportNumber = 0; ReportNumber < HIDReportInfo.TotalReportItems; ReportNumber++)
	{
		/* Create a temporary item pointer to the next report item */
		HID_ReportItem_t* ReportItem = &HIDReportInfo.ReportItems[ReportNumber];
		
		bool FoundData;

		if ((ReportItem->Attributes.Usage.Page       == USAGE_PAGE_BUTTON) &&
			(ReportItem->ItemType                    == REPORT_ITEM_TYPE_In))
		{
			/* Get the mouse button value */
			FoundData = USB_GetHIDReportItemInfo(MouseReport, ReportItem);
			
			/* For multi-report devices - if the requested data was not in the issued report, continue */
			if (!(FoundData))
			  continue;

			/* If button is pressed, all LEDs are turned on */
			if (ReportItem->Value)
			  LEDMask = LEDS_ALL_LEDS;
		}
		else if ((ReportItem->Attributes.Usage.Page   == USAGE_PAGE_GENERIC_DCTRL) &&
				 ((ReportItem->Attributes.Usage.Usage == USAGE_X)                  ||
				  (ReportItem->Attributes.Usage.Usage == USAGE_Y))                 &&
				 (ReportItem->ItemType                == REPORT_ITEM_TYPE_In))
		{
			/* Get the mouse relative position value */
			FoundData = USB_GetHIDReportItemInfo(MouseReport, ReportItem);
			
			/* For multi-report devices - if the requested data was not in the issued report, continue */
			if (!(FoundData))
			  continue;
			  
263
			int16_t DeltaMovement = (int16_t)(ReportItem->Value << (16 - ReportItem->Attributes.BitSize));
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
			
			/* Determine if the report is for the X or Y delta movement */
			if (ReportItem->Attributes.Usage.Usage == USAGE_X)
			{
				/* Turn on the appropriate LED according to direction if the delta is non-zero */
				if (DeltaMovement)
				  LEDMask |= ((DeltaMovement > 0) ? LEDS_LED1 : LEDS_LED2);
			}
			else
			{
				/* Turn on the appropriate LED according to direction if the delta is non-zero */
				if (DeltaMovement)
				  LEDMask |= ((DeltaMovement > 0) ? LEDS_LED3 : LEDS_LED4);
			}
		}
	}
	
	/* Display the button information on the board LEDs */
	LEDs_SetAllLEDs(LEDMask);
}