MouseHostWithParser.c 10.9 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
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
/*
             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 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
 *  enters a loop to run the application tasks in sequence.
 */
int main(void)
{
	SetupHardware();

	puts_P(PSTR(ESC_FG_CYAN "Mouse HID Parser Host Demo running.\r\n" ESC_FG_WHITE));

	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
	sei();

	for (;;)
	{
		Mouse_HID_Task();
		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 */
	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.
 */
void EVENT_USB_Host_DeviceAttached(void)
{
	puts_P(PSTR(ESC_FG_GREEN "Device Attached.\r\n" ESC_FG_WHITE));
	LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
}

/** 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.
 */
void EVENT_USB_Host_DeviceUnattached(void)
{
	puts_P(PSTR(ESC_FG_GREEN "Device Unattached.\r\n" ESC_FG_WHITE));
	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
}

/** 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.
 */
void EVENT_USB_Host_DeviceEnumerationComplete(void)
{
	LEDs_SetAllLEDs(LEDMASK_USB_READY);
}

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

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

	LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
	for(;;);
}

/** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
 *  enumerating an attached USB device.
 */
115
116
void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode,
                                            const uint8_t SubErrorCode)
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
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
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
223
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
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
{
	printf_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"
	                         " -- Error Code %d\r\n"
	                         " -- Sub Error Code %d\r\n"
	                         " -- In State %d\r\n" ESC_FG_WHITE), ErrorCode, SubErrorCode, USB_HostState);
	
	LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
}

/** 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.
 */
void Mouse_HID_Task(void)
{
	uint8_t ErrorCode;

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

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

				/* Wait until USB device disconnected */
				USB_HostState = HOST_STATE_WaitForDeviceRemoval;
				break;
			}
		
			/* Set the device configuration to the first configuration (rarely do devices use multiple configurations) */
			if ((ErrorCode = USB_Host_SetDeviceConfiguration(1)) != HOST_SENDCONTROL_Successful)
			{
				printf_P(PSTR(ESC_FG_RED "Control Error (Set Configuration).\r\n"
				                         " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);

				/* Indicate error via status LEDs */
				LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
				
				/* Wait until USB device disconnected */
				USB_HostState = HOST_STATE_WaitForDeviceRemoval;
				break;
			}
			
			printf_P(PSTR("Processing HID Report (Size %d Bytes).\r\n"), HIDReportSize);

			/* Get and process the device's first HID report descriptor */
			if ((ErrorCode = GetHIDReportData()) != ParseSuccessful)
			{
				puts_P(PSTR(ESC_FG_RED "Report Parse Error.\r\n"));

				if (!(HIDReportInfo.TotalReportItems))
					puts_P(PSTR("Not a valid Mouse." ESC_FG_WHITE));
				else
					printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
			
				/* Indicate error via status LEDs */
				LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
				
				/* Wait until USB device disconnected */
				USB_HostState = HOST_STATE_WaitForDeviceRemoval;
				break;
			}
			
			printf("Total Reports: %d\r\n", HIDReportInfo.TotalDeviceReports);

			for (uint8_t i = 0; i < HIDReportInfo.TotalDeviceReports; i++)
			{
				HID_ReportSizeInfo_t* CurrReportIDInfo = &HIDReportInfo.ReportIDSizes[i];
				
				uint8_t ReportSizeInBits      = CurrReportIDInfo->ReportSizeBits[REPORT_ITEM_TYPE_In];
				uint8_t ReportSizeOutBits     = CurrReportIDInfo->ReportSizeBits[REPORT_ITEM_TYPE_Out];
				uint8_t ReportSizeFeatureBits = CurrReportIDInfo->ReportSizeBits[REPORT_ITEM_TYPE_Feature];

				/* Print out the byte sizes of each report within the device */
				printf_P(PSTR("  + Report ID %d - In: %d bytes, Out: %d bytes, Feature: %d bytes\r\n"),
				         CurrReportIDInfo->ReportID,
				         ((ReportSizeInBits      >> 3) + ((ReportSizeInBits      & 0x07) != 0)),
				         ((ReportSizeOutBits     >> 3) + ((ReportSizeOutBits     & 0x07) != 0)),
				         ((ReportSizeFeatureBits >> 3) + ((ReportSizeFeatureBits & 0x07) != 0)));
			}

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

			USB_HostState = HOST_STATE_Configured;
			break;
		case HOST_STATE_Configured:
			/* 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.
 *
 *  \param[in] MouseReport  Pointer to a HID report from an attached mouse device
 */
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_SCROLL_WHEEL)       &&
				 (ReportItem->ItemType                == REPORT_ITEM_TYPE_In))
		{
			/* Get the mouse wheel value if it is contained within the current 
			 * report, if not, skip to the next item in the parser list
			 */
			if (!(USB_GetHIDReportItemInfo(MouseReport, ReportItem)))
			  continue;							  

			int16_t WheelDelta = HID_ALIGN_DATA(ReportItem, int16_t);
			
			if (WheelDelta)
			  LEDMask = (LEDS_LED1 | LEDS_LED2 | ((WheelDelta > 0) ? LEDS_LED3 : LEDS_LED4));
		}
		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;
			  
302
			int16_t DeltaMovement = HID_ALIGN_DATA(ReportItem, int16_t);
303
			
304
305
			/* Check to see if a (non-zero) delta movement has been indicated */
			if (DeltaMovement)
306
			{
307
308
				/* Determine if the report is for the X or Y delta movement, light LEDs as appropriate */
				if (ReportItem->Attributes.Usage.Usage == USAGE_X)
309
				  LEDMask |= ((DeltaMovement > 0) ? LEDS_LED1 : LEDS_LED2);
310
				else
311
312
313
314
315
316
317
				  LEDMask |= ((DeltaMovement > 0) ? LEDS_LED3 : LEDS_LED4);
			}
		}
	}
	
	/* Display the button information on the board LEDs */
	LEDs_SetAllLEDs(LEDMask);
318
}