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
115
116
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
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
|
/*
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.
*/
#define __INCLUDE_FROM_USB_DRIVER
#include "../../HighLevel/USBMode.h"
#if defined(USB_CAN_BE_DEVICE)
#define __INCLUDE_FROM_CDC_CLASS_DEVICE_C
#define __INCLUDE_FROM_CDC_DRIVER
#include "CDC.h"
void CDC_Device_Event_Stub(void)
{
}
void CDC_Device_ProcessControlRequest(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
{
if (!(Endpoint_IsSETUPReceived()))
return;
if (USB_ControlRequest.wIndex != CDCInterfaceInfo->Config.ControlInterfaceNumber)
return;
switch (USB_ControlRequest.bRequest)
{
case CDC_REQ_GetLineEncoding:
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
{
Endpoint_ClearSETUP();
Endpoint_Write_Control_Stream_LE(&CDCInterfaceInfo->State.LineEncoding, sizeof(CDCInterfaceInfo->State.LineEncoding));
Endpoint_ClearOUT();
}
break;
case CDC_REQ_SetLineEncoding:
if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
{
Endpoint_ClearSETUP();
Endpoint_Read_Control_Stream_LE(&CDCInterfaceInfo->State.LineEncoding, sizeof(CDCInterfaceInfo->State.LineEncoding));
Endpoint_ClearIN();
EVENT_CDC_Device_LineEncodingChanged(CDCInterfaceInfo);
}
break;
case CDC_REQ_SetControlLineState:
if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
{
Endpoint_ClearSETUP();
Endpoint_ClearStatusStage();
CDCInterfaceInfo->State.ControlLineStates.HostToDevice = USB_ControlRequest.wValue;
EVENT_CDC_Device_ControLineStateChanged(CDCInterfaceInfo);
}
break;
case CDC_REQ_SendBreak:
if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
{
Endpoint_ClearSETUP();
Endpoint_ClearStatusStage();
EVENT_CDC_Device_BreakSent(CDCInterfaceInfo, (uint8_t)USB_ControlRequest.wValue);
}
break;
}
}
bool CDC_Device_ConfigureEndpoints(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
{
memset(&CDCInterfaceInfo->State, 0x00, sizeof(CDCInterfaceInfo->State));
for (uint8_t EndpointNum = 1; EndpointNum < ENDPOINT_TOTAL_ENDPOINTS; EndpointNum++)
{
uint16_t Size;
uint8_t Type;
uint8_t Direction;
bool DoubleBanked;
if (EndpointNum == CDCInterfaceInfo->Config.DataINEndpointNumber)
{
Size = CDCInterfaceInfo->Config.DataINEndpointSize;
Direction = ENDPOINT_DIR_IN;
Type = EP_TYPE_BULK;
DoubleBanked = CDCInterfaceInfo->Config.DataINEndpointDoubleBank;
}
else if (EndpointNum == CDCInterfaceInfo->Config.DataOUTEndpointNumber)
{
Size = CDCInterfaceInfo->Config.DataOUTEndpointSize;
Direction = ENDPOINT_DIR_OUT;
Type = EP_TYPE_BULK;
DoubleBanked = CDCInterfaceInfo->Config.DataOUTEndpointDoubleBank;
}
else if (EndpointNum == CDCInterfaceInfo->Config.NotificationEndpointNumber)
{
Size = CDCInterfaceInfo->Config.NotificationEndpointSize;
Direction = ENDPOINT_DIR_IN;
Type = EP_TYPE_INTERRUPT;
DoubleBanked = CDCInterfaceInfo->Config.NotificationEndpointDoubleBank;
}
else
{
continue;
}
if (!(Endpoint_ConfigureEndpoint(EndpointNum, Type, Direction, Size,
DoubleBanked ? ENDPOINT_BANK_DOUBLE : ENDPOINT_BANK_SINGLE)))
{
return false;
}
}
return true;
}
void CDC_Device_USBTask(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
{
if ((USB_DeviceState != DEVICE_STATE_Configured) || !(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS))
return;
CDC_Device_Flush(CDCInterfaceInfo);
}
uint8_t CDC_Device_SendString(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo,
const char* const Data,
const uint16_t Length)
{
if ((USB_DeviceState != DEVICE_STATE_Configured) || !(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS))
return ENDPOINT_RWSTREAM_DeviceDisconnected;
Endpoint_SelectEndpoint(CDCInterfaceInfo->Config.DataINEndpointNumber);
return Endpoint_Write_Stream_LE(Data, Length, NO_STREAM_CALLBACK);
}
uint8_t CDC_Device_SendByte(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo,
const uint8_t Data)
{
if ((USB_DeviceState != DEVICE_STATE_Configured) || !(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS))
return ENDPOINT_RWSTREAM_DeviceDisconnected;
Endpoint_SelectEndpoint(CDCInterfaceInfo->Config.DataINEndpointNumber);
if (!(Endpoint_IsReadWriteAllowed()))
{
Endpoint_ClearIN();
uint8_t ErrorCode;
if ((ErrorCode = Endpoint_WaitUntilReady()) != ENDPOINT_READYWAIT_NoError)
return ErrorCode;
}
Endpoint_Write_Byte(Data);
return ENDPOINT_READYWAIT_NoError;
}
uint8_t CDC_Device_Flush(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
{
if ((USB_DeviceState != DEVICE_STATE_Configured) || !(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS))
return ENDPOINT_RWSTREAM_DeviceDisconnected;
uint8_t ErrorCode;
Endpoint_SelectEndpoint(CDCInterfaceInfo->Config.DataINEndpointNumber);
if (!(Endpoint_BytesInEndpoint()))
return ENDPOINT_READYWAIT_NoError;
bool BankFull = !(Endpoint_IsReadWriteAllowed());
Endpoint_ClearIN();
if (BankFull)
{
if ((ErrorCode = Endpoint_WaitUntilReady()) != ENDPOINT_READYWAIT_NoError)
return ErrorCode;
Endpoint_ClearIN();
}
return ENDPOINT_READYWAIT_NoError;
}
uint16_t CDC_Device_BytesReceived(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
{
if ((USB_DeviceState != DEVICE_STATE_Configured) || !(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS))
return 0;
Endpoint_SelectEndpoint(CDCInterfaceInfo->Config.DataOUTEndpointNumber);
if (Endpoint_IsOUTReceived())
{
if (!(Endpoint_BytesInEndpoint()))
{
Endpoint_ClearOUT();
return 0;
}
else
{
return Endpoint_BytesInEndpoint();
}
}
else
{
return 0;
}
}
int16_t CDC_Device_ReceiveByte(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
{
if ((USB_DeviceState != DEVICE_STATE_Configured) || !(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS))
return -1;
int16_t ReceivedByte = -1;
Endpoint_SelectEndpoint(CDCInterfaceInfo->Config.DataOUTEndpointNumber);
if (Endpoint_IsOUTReceived())
{
if (Endpoint_BytesInEndpoint())
ReceivedByte = Endpoint_Read_Byte();
if (!(Endpoint_BytesInEndpoint()))
Endpoint_ClearOUT();
}
return ReceivedByte;
}
void CDC_Device_SendControlLineStateChange(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
{
if ((USB_DeviceState != DEVICE_STATE_Configured) || !(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS))
return;
Endpoint_SelectEndpoint(CDCInterfaceInfo->Config.NotificationEndpointNumber);
USB_Request_Header_t Notification = (USB_Request_Header_t)
{
.bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE),
.bRequest = CDC_NOTIF_SerialState,
.wValue = 0,
.wIndex = 0,
.wLength = sizeof(CDCInterfaceInfo->State.ControlLineStates.DeviceToHost),
};
Endpoint_Write_Stream_LE(&Notification, sizeof(USB_Request_Header_t), NO_STREAM_CALLBACK);
Endpoint_Write_Stream_LE(&CDCInterfaceInfo->State.ControlLineStates.DeviceToHost,
sizeof(CDCInterfaceInfo->State.ControlLineStates.DeviceToHost),
NO_STREAM_CALLBACK);
Endpoint_ClearIN();
}
void CDC_Device_CreateStream(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo,
FILE* const Stream)
{
*Stream = (FILE)FDEV_SETUP_STREAM(CDC_Device_putchar, CDC_Device_getchar, _FDEV_SETUP_RW);
fdev_set_udata(Stream, CDCInterfaceInfo);
}
void CDC_Device_CreateBlockingStream(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo,
FILE* const Stream)
{
*Stream = (FILE)FDEV_SETUP_STREAM(CDC_Device_putchar, CDC_Device_getchar_Blocking, _FDEV_SETUP_RW);
fdev_set_udata(Stream, CDCInterfaceInfo);
}
static int CDC_Device_putchar(char c,
FILE* Stream)
{
return CDC_Device_SendByte((USB_ClassInfo_CDC_Device_t*)fdev_get_udata(Stream), c) ? _FDEV_ERR : 0;
}
static int CDC_Device_getchar(FILE* Stream)
{
int16_t ReceivedByte = CDC_Device_ReceiveByte((USB_ClassInfo_CDC_Device_t*)fdev_get_udata(Stream));
if (ReceivedByte < 0)
return _FDEV_EOF;
return ReceivedByte;
}
static int CDC_Device_getchar_Blocking(FILE* Stream)
{
int16_t ReceivedByte;
while ((ReceivedByte = CDC_Device_ReceiveByte((USB_ClassInfo_CDC_Device_t*)fdev_get_udata(Stream))) < 0)
{
if (USB_DeviceState == DEVICE_STATE_Unattached)
return _FDEV_EOF;
CDC_Device_USBTask((USB_ClassInfo_CDC_Device_t*)fdev_get_udata(Stream));
USB_USBTask();
}
return ReceivedByte;
}
#endif
|
