Pipe.c 6.46 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
/*
             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.
*/
30
31
32

#include "../HighLevel/USBMode.h"

33
34
35
36
37
38
39
#if defined(USB_CAN_BE_HOST)

#define  INCLUDE_FROM_PIPE_C
#include "Pipe.h"

uint8_t USB_ControlPipeSize = PIPE_CONTROLPIPE_DEFAULT_SIZE;

40
bool Pipe_ConfigurePipe(const uint8_t Number, const uint8_t Type, const uint8_t Token, const uint8_t EndpointNumber,
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
						const uint16_t Size, const uint8_t Banks)
{
	Pipe_SelectPipe(Number);
	Pipe_EnablePipe();

	UPCFG1X = 0;
	
	UPCFG0X = ((Type << EPTYPE0) | Token | (EndpointNumber << PEPNUM0));
	UPCFG1X = ((1 << ALLOC) | Banks | Pipe_BytesToEPSizeMask(Size));

	return Pipe_IsConfigured();
}

void Pipe_ClearPipes(void)
{
	UPINT = 0;

	for (uint8_t PNum = 0; PNum < PIPE_TOTAL_PIPES; PNum++)
	{
		Pipe_ResetPipe(PNum);
		Pipe_SelectPipe(PNum);
		UPIENX = 0;
		UPINTX = 0;
		Pipe_ClearError();
		Pipe_ClearErrorFlags();
		Pipe_DeallocateMemory();
		Pipe_DisablePipe();
	}
}

uint8_t Pipe_WaitUntilReady(void)
{
73
	uint16_t TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
74
75
76

	USB_INT_Clear(USB_INT_HSOFI);

77
	for (;;)
78
	{
79
80
81
82
83
84
85
86
87
88
89
		if (Pipe_GetPipeToken() == PIPE_TOKEN_IN)
		{
			if (Pipe_IsINReceived())
			  return PIPE_READYWAIT_NoError;
		}
		else
		{
			if (Pipe_IsOUTReady())
			  return PIPE_READYWAIT_NoError;		
		}

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
115
116
		if (Pipe_IsStalled())
		  return PIPE_READYWAIT_PipeStalled;
		else if (!(USB_IsConnected))
		  return PIPE_READYWAIT_DeviceDisconnected;
			  
		if (USB_INT_HasOccurred(USB_INT_HSOFI))
		{
			USB_INT_Clear(USB_INT_HSOFI);

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

uint8_t Pipe_Write_Stream_LE(const void* Data, uint16_t Length
#if !defined(NO_STREAM_CALLBACKS)
                                 , uint8_t (* const Callback)(void)
#endif
								 )
{
	uint8_t* DataStream = (uint8_t*)Data;
	uint8_t  ErrorCode;
	
	if ((ErrorCode = Pipe_WaitUntilReady()))
	  return ErrorCode;

117
	while (Length)
118
	{
119
		if (!(Pipe_IsReadWriteAllowed()))
120
		{
121
			Pipe_ClearOUT();
122
123
124
125
126
127
128
129
130
				
			#if !defined(NO_STREAM_CALLBACKS)
			if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
			  return PIPE_RWSTREAM_ERROR_CallbackAborted;
			#endif

			if ((ErrorCode = Pipe_WaitUntilReady()))
			  return ErrorCode;
		}
131
132
133
		else
		{
			Pipe_Write_Byte(*(DataStream++));
134
			Length--;
135
		}
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
	}

	return PIPE_RWSTREAM_ERROR_NoError;
}

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

153
	while (Length)
154
	{
155
		if (!(Pipe_IsReadWriteAllowed()))
156
		{
157
			Pipe_ClearOUT();
158
159
160
161
162
163
164
165
166
				
			#if !defined(NO_STREAM_CALLBACKS)
			if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
			  return PIPE_RWSTREAM_ERROR_CallbackAborted;
			#endif

			if ((ErrorCode = Pipe_WaitUntilReady()))
			  return ErrorCode;
		}
167
168
169
		else
		{
			Pipe_Write_Byte(*(DataStream--));
170
			Length--;
171
		}
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
	}

	return PIPE_RWSTREAM_ERROR_NoError;
}

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

188
	while (Length)
189
	{
190
		if (!(Pipe_IsReadWriteAllowed()))
191
		{
192
			Pipe_ClearIN();
193
194
195
196
197
198
199
200
201
				
			#if !defined(NO_STREAM_CALLBACKS)
			if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
			  return PIPE_RWSTREAM_ERROR_CallbackAborted;
			#endif

			if ((ErrorCode = Pipe_WaitUntilReady()))
			  return ErrorCode;
		}
202
203
204
		else
		{
			Pipe_Discard_Byte();
205
			Length--;
206
		}
207
208
209
210
211
212
	}

	return PIPE_RWSTREAM_ERROR_NoError;
}

uint8_t Pipe_Read_Stream_LE(void* Buffer, uint16_t Length
Dean Camera's avatar
Dean Camera committed
213
#if !defined(NO_STREAM_CALLBACKS)
214
215
216
217
218
219
220
221
222
223
                                 , uint8_t (* const Callback)(void)
#endif
								 )
{
	uint8_t* DataStream = (uint8_t*)Buffer;
	uint8_t  ErrorCode;
	
	if ((ErrorCode = Pipe_WaitUntilReady()))
	  return ErrorCode;

224
	while (Length)
225
	{
226
		if (!(Pipe_IsReadWriteAllowed()))
227
		{
228
			Pipe_ClearIN();
229
230
231
232
233
234
235
236
237
				
			#if !defined(NO_STREAM_CALLBACKS)
			if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
			  return PIPE_RWSTREAM_ERROR_CallbackAborted;
			#endif

			if ((ErrorCode = Pipe_WaitUntilReady()))
			  return ErrorCode;
		}
238
239
240
		else
		{
			*(DataStream++) = Pipe_Read_Byte();
241
			Length--;
242
		}
243
244
245
246
247
248
	}

	return PIPE_RWSTREAM_ERROR_NoError;
}

uint8_t Pipe_Read_Stream_BE(void* Buffer, uint16_t Length
Dean Camera's avatar
Dean Camera committed
249
#if !defined(NO_STREAM_CALLBACKS)
250
251
252
253
254
255
256
257
258
259
                                 , uint8_t (* const Callback)(void)
#endif
								 )
{
	uint8_t* DataStream = (uint8_t*)(Buffer + Length - 1);
	uint8_t  ErrorCode;
	
	if ((ErrorCode = Pipe_WaitUntilReady()))
	  return ErrorCode;

260
	while (Length)
261
	{
262
		if (!(Pipe_IsReadWriteAllowed()))
263
		{
264
			Pipe_ClearIN();
265
266
267
268
269
270
271
272
273
				
			#if !defined(NO_STREAM_CALLBACKS)
			if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
			  return PIPE_RWSTREAM_ERROR_CallbackAborted;
			#endif

			if ((ErrorCode = Pipe_WaitUntilReady()))
			  return ErrorCode;
		}
274
275
276
		else
		{
			*(DataStream--) = Pipe_Read_Byte();
277
			Length--;
278
		}
279
280
281
282
283
284
	}
	
	return PIPE_RWSTREAM_ERROR_NoError;
}

#endif