Endpoint.c 9.57 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
#include "../HighLevel/USBMode.h"

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
#if defined(USB_CAN_BE_DEVICE)

#define  INCLUDE_FROM_ENDPOINT_C
#include "Endpoint.h"

#if !defined(FIXED_CONTROL_ENDPOINT_SIZE)
uint8_t USB_ControlEndpointSize = ENDPOINT_CONTROLEP_DEFAULT_SIZE;
#endif

#if !defined(STATIC_ENDPOINT_CONFIGURATION)
bool Endpoint_ConfigureEndpoint(const uint8_t  Number, const uint8_t Type, const uint8_t Direction,
			                    const uint16_t Size, const uint8_t Banks)
{
	Endpoint_SelectEndpoint(Number);
	Endpoint_EnableEndpoint();

	UECFG1X = 0;	

	UECFG0X = ((Type << EPTYPE0) | Direction);
	UECFG1X = ((1 << ALLOC) | Banks | Endpoint_BytesToEPSizeMask(Size));

	return Endpoint_IsConfigured();
}
#else
bool Endpoint_ConfigureEndpointStatic(const uint8_t Number, const uint8_t UECFG0XData, const uint8_t UECFG1XData)
{
	Endpoint_SelectEndpoint(Number);
	Endpoint_EnableEndpoint();

62
	UECFG1X = 0;
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84

	UECFG0X = UECFG0XData;
	UECFG1X = UECFG1XData;

	return Endpoint_IsConfigured();
}
#endif

void Endpoint_ClearEndpoints(void)
{
	UEINT = 0;

	for (uint8_t EPNum = 0; EPNum < ENDPOINT_TOTAL_ENDPOINTS; EPNum++)
	{
		Endpoint_SelectEndpoint(EPNum);	
		UEIENX = 0;
		UEINTX = 0;
		Endpoint_DeallocateMemory();
		Endpoint_DisableEndpoint();
	}
}

85
#if !defined(CONTROL_ONLY_DEVICE)
86
87
uint8_t Endpoint_WaitUntilReady(void)
{
88
	uint16_t TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
89
90
91

	USB_INT_Clear(USB_INT_SOFI);

92
	for (;;)
93
	{
94
95
96
97
98
99
100
101
102
103
104
		if (Endpoint_GetEndpointDirection() == ENDPOINT_DIR_IN)
		{
			if (Endpoint_IsINReady())
			  return ENDPOINT_READYWAIT_NoError;
		}
		else
		{
			if (Endpoint_IsOUTReceived())
			  return ENDPOINT_READYWAIT_NoError;		
		}
		
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
130
131
132
		if (!(USB_IsConnected))
		  return ENDPOINT_READYWAIT_DeviceDisconnected;
		else if (Endpoint_IsStalled())
		  return ENDPOINT_READYWAIT_EndpointStalled;
			  
		if (USB_INT_HasOccurred(USB_INT_SOFI))
		{
			USB_INT_Clear(USB_INT_SOFI);

			if (!(TimeoutMSRem--))
			  return ENDPOINT_READYWAIT_Timeout;
		}
	}
}

uint8_t Endpoint_Discard_Stream(uint16_t Length
#if !defined(NO_STREAM_CALLBACKS)
                                , uint8_t (* const Callback)(void)
#endif
								)
{
	uint8_t  ErrorCode;
	
	if ((ErrorCode = Endpoint_WaitUntilReady()))
	  return ErrorCode;

	while (Length--)
	{
133
		if (!(Endpoint_IsReadWriteAllowed()))
134
		{
135
			Endpoint_ClearOUT();
136
137
138
139
140
141
142
143
144

			#if !defined(NO_STREAM_CALLBACKS)
			if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
			  return ENDPOINT_RWSTREAM_ERROR_CallbackAborted;
			#endif

			if ((ErrorCode = Endpoint_WaitUntilReady()))
			  return ErrorCode;
		}
145
146
147
148
		else
		{
			Endpoint_Discard_Byte();
		}
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
	}
	
	return ENDPOINT_RWSTREAM_ERROR_NoError;
}

uint8_t Endpoint_Write_Stream_LE(const void* Buffer, uint16_t Length
#if !defined(NO_STREAM_CALLBACKS)
                                 , uint8_t (* const Callback)(void)
#endif
								 )
{
	uint8_t* DataStream   = (uint8_t*)Buffer;
	uint8_t  ErrorCode;
	
	if ((ErrorCode = Endpoint_WaitUntilReady()))
	  return ErrorCode;

	while (Length--)
	{
168
		if (!(Endpoint_IsReadWriteAllowed()))
169
		{
170
			Endpoint_ClearIN();
171
172
173
174
175
176
177
178
179
			
			#if !defined(NO_STREAM_CALLBACKS)
			if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
			  return ENDPOINT_RWSTREAM_ERROR_CallbackAborted;
			#endif

			if ((ErrorCode = Endpoint_WaitUntilReady()))
			  return ErrorCode;
		}
180
181
182
183
		else
		{
			Endpoint_Write_Byte(*(DataStream++));
		}
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
	}
	
	return ENDPOINT_RWSTREAM_ERROR_NoError;
}

uint8_t Endpoint_Write_Stream_BE(const void* Buffer, uint16_t Length
#if !defined(NO_STREAM_CALLBACKS)
                                 , uint8_t (* const Callback)(void)
#endif
								 )
{
	uint8_t* DataStream = (uint8_t*)(Buffer + Length - 1);
	uint8_t  ErrorCode;
	
	if ((ErrorCode = Endpoint_WaitUntilReady()))
	  return ErrorCode;

	while (Length--)
	{
203
		if (!(Endpoint_IsReadWriteAllowed()))
204
		{
205
			Endpoint_ClearIN();
206
207
208
209
210
211
212
213
214

			#if !defined(NO_STREAM_CALLBACKS)
			if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
			  return ENDPOINT_RWSTREAM_ERROR_CallbackAborted;
			#endif

			if ((ErrorCode = Endpoint_WaitUntilReady()))
			  return ErrorCode;
		}
215
216
217
218
		else
		{
			Endpoint_Write_Byte(*(DataStream--));
		}
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
	}
	
	return ENDPOINT_RWSTREAM_ERROR_NoError;
}

uint8_t Endpoint_Read_Stream_LE(void* Buffer, uint16_t Length
#if !defined(NO_STREAM_CALLBACKS)
                                 , uint8_t (* const Callback)(void)
#endif
								 )
{
	uint8_t* DataStream = (uint8_t*)Buffer;
	uint8_t  ErrorCode;
	
	if ((ErrorCode = Endpoint_WaitUntilReady()))
	  return ErrorCode;

	while (Length--)
	{
238
		if (!(Endpoint_IsReadWriteAllowed()))
239
		{
240
			Endpoint_ClearOUT();
241
242
243
244
245
246
247
248
249

			#if !defined(NO_STREAM_CALLBACKS)
			if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
			  return ENDPOINT_RWSTREAM_ERROR_CallbackAborted;
			#endif

			if ((ErrorCode = Endpoint_WaitUntilReady()))
			  return ErrorCode;
		}
250
251
252
253
		else
		{
			*(DataStream++) = Endpoint_Read_Byte();
		}
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
	}
	
	return ENDPOINT_RWSTREAM_ERROR_NoError;
}

uint8_t Endpoint_Read_Stream_BE(void* Buffer, uint16_t Length
#if !defined(NO_STREAM_CALLBACKS)
                                 , uint8_t (* const Callback)(void)
#endif
								 )
{
	uint8_t* DataStream = (uint8_t*)(Buffer + Length - 1);
	uint8_t  ErrorCode;
	
	if ((ErrorCode = Endpoint_WaitUntilReady()))
	  return ErrorCode;

	while (Length--)
	{
273
		if (!(Endpoint_IsReadWriteAllowed()))
274
		{
275
			Endpoint_ClearOUT();
276
277
278
279
280
281
282
283
284

			#if !defined(NO_STREAM_CALLBACKS)
			if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
			  return ENDPOINT_RWSTREAM_ERROR_CallbackAborted;
			#endif

			if ((ErrorCode = Endpoint_WaitUntilReady()))
			  return ErrorCode;
		}
285
286
287
288
		else
		{
			*(DataStream--) = Endpoint_Read_Byte();
		}
289
290
291
292
	}
	
	return ENDPOINT_RWSTREAM_ERROR_NoError;
}
293
#endif
294
295
296

uint8_t Endpoint_Write_Control_Stream_LE(const void* Buffer, uint16_t Length)
{
297
298
299
	uint8_t* DataStream    = (uint8_t*)Buffer;
	bool     LastPacketFull = false;
	bool     ShortTransfer = (Length < USB_ControlRequest.wLength);
300
	
301
	while (Length && !(Endpoint_IsOUTReceived()))
302
	{
303
		while (!(Endpoint_IsINReady()));
304
305
306
307
308
309
310
311
		
		while (Length && (Endpoint_BytesInEndpoint() < USB_ControlEndpointSize))
		{
			Endpoint_Write_Byte(*(DataStream++));
			
			Length--;
		}
		
312
		LastPacketFull = (Endpoint_BytesInEndpoint() == USB_ControlEndpointSize);
313
		Endpoint_ClearIN();
314
315
	}
	
316
	if (Endpoint_IsOUTReceived())
317
318
	  return ENDPOINT_RWCSTREAM_ERROR_HostAborted;
	
319
	if (LastPacketFull || ShortTransfer)
320
	{
321
		while (!(Endpoint_IsINReady()));
322
		Endpoint_ClearIN();
323
324
	}
	
325
	while (!(Endpoint_IsOUTReceived()));
326
327
328
329
330
331

	return ENDPOINT_RWCSTREAM_ERROR_NoError;
}

uint8_t Endpoint_Write_Control_Stream_BE(const void* Buffer, uint16_t Length)
{
332
333
334
	uint8_t* DataStream     = (uint8_t*)(Buffer + Length - 1);
	bool     LastPacketFull = false;
	bool     ShortTransfer  = (Length < USB_ControlRequest.wLength);
335
	
336
	while (Length && !(Endpoint_IsOUTReceived()))
337
	{
338
		while (!(Endpoint_IsINReady()));
339
340
341
342
343
344
345
346
		
		while (Length && (Endpoint_BytesInEndpoint() < USB_ControlEndpointSize))
		{
			Endpoint_Write_Byte(*(DataStream--));
			
			Length--;
		}
		
347
		LastPacketFull = (Endpoint_BytesInEndpoint() == USB_ControlEndpointSize);
348
		Endpoint_ClearIN();
349
350
	}
	
351
	if (Endpoint_IsOUTReceived())
352
353
	  return ENDPOINT_RWCSTREAM_ERROR_HostAborted;
	
354
	if (LastPacketFull || ShortTransfer)
355
	{
356
		while (!(Endpoint_IsINReady()));
357
		Endpoint_ClearIN();
358
359
	}
	
360
	while (!(Endpoint_IsOUTReceived()));
361
362
363
364
365
366
367
368
369
370

	return ENDPOINT_RWCSTREAM_ERROR_NoError;
}

uint8_t Endpoint_Read_Control_Stream_LE(void* Buffer, uint16_t Length)
{
	uint8_t* DataStream = (uint8_t*)Buffer;
	
	while (Length)
	{
371
		while (!(Endpoint_IsOUTReceived()));
372
373
374
375
376
377
378
379
		
		while (Length && Endpoint_BytesInEndpoint())
		{
			*(DataStream++) = Endpoint_Read_Byte();
			
			Length--;
		}
		
380
		Endpoint_ClearOUT();
381
382
	}
	
383
	while (!(Endpoint_IsINReady()));
384
385
386
387
388
389
390
391
392
393
	
	return ENDPOINT_RWCSTREAM_ERROR_NoError;
}

uint8_t Endpoint_Read_Control_Stream_BE(void* Buffer, uint16_t Length)
{
	uint8_t* DataStream = (uint8_t*)(Buffer + Length - 1);
	
	while (Length)
	{
394
		while (!(Endpoint_IsOUTReceived()));
395
396
397
398
399
400
401
402
		
		while (Length && Endpoint_BytesInEndpoint())
		{
			*(DataStream--) = Endpoint_Read_Byte();
			
			Length--;
		}
		
403
		Endpoint_ClearOUT();
404
405
	}
	
406
	while (!(Endpoint_IsINReady()));
407
408
409
410
411

	return ENDPOINT_RWCSTREAM_ERROR_NoError;
}

#endif