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
|
/* ----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2008, Atmel Corporation
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the disclaimer below.
*
* Atmel's name may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ----------------------------------------------------------------------------
*/
/**
\unit
!!!Purpose
Definition of a class for handling USB endpoint descriptors.
!!!Usage
-# Declare USBEndpointDescriptor instance as a part of the
configuration descriptors of a USB device.
-# To get useful information (field values) from the defined USB device
endpoint descriptor (to configure hardware for endpoints, etc), use
- USBEndpointDescriptor_GetNumber
- USBEndpointDescriptor_GetDirection
- USBEndpointDescriptor_GetType
- USBEndpointDescriptor_GetMaxPacketSize
*/
#ifndef USBENDPOINTDESCRIPTOR_H
#define USBENDPOINTDESCRIPTOR_H
//------------------------------------------------------------------------------
// Definitions
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
/// \page "USB Endpoint definitions"
///
/// This page lists definitions and macro for endpoint descriptors.
///
/// - USB Endpoint directions
/// - USBEndpointDescriptor_OUT
/// - USBEndpointDescriptor_IN
///
/// - USB Endpoint types
/// - USBEndpointDescriptor_CONTROL
/// - USBEndpointDescriptor_ISOCHRONOUS
/// - USBEndpointDescriptor_BULK
/// - USBEndpointDescriptor_INTERRUPT
///
/// - USB Endpoint maximun sizes
/// - USBEndpointDescriptor_MAXCTRLSIZE_FS
/// - USBEndpointDescriptor_MAXCTRLSIZE_HS
/// - USBEndpointDescriptor_MAXBULKSIZE_FS
/// - USBEndpointDescriptor_MAXBULKSIZE_HS
/// - USBEndpointDescriptor_MAXINTERRUPTSIZE_FS
/// - USBEndpointDescriptor_MAXINTERRUPTSIZE_HS
/// - USBEndpointDescriptor_MAXISOCHRONOUSSIZE_FS
/// - USBEndpointDescriptor_MAXISOCHRONOUSSIZE_HS
///
/// - USB Endpoint address define
/// - USBEndpointDescriptor_ADDRESS
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
/// \page "USB Endpoint directions"
///
/// This page lists definitions of USB endpoint directions.
///
/// !Directions
/// - USBEndpointDescriptor_OUT
/// - USBEndpointDescriptor_IN
/// Endpoint receives data from the host.
#define USBEndpointDescriptor_OUT 0
/// Endpoint sends data to the host.
#define USBEndpointDescriptor_IN 1
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
/// \page "USB Endpoint types"
///
/// This page lists definitions of USB endpoint types.
///
/// !Types
/// - USBEndpointDescriptor_CONTROL
/// - USBEndpointDescriptor_ISOCHRONOUS
/// - USBEndpointDescriptor_BULK
/// - USBEndpointDescriptor_INTERRUPT
/// Control endpoint type.
#define USBEndpointDescriptor_CONTROL 0
/// Isochronous endpoint type.
#define USBEndpointDescriptor_ISOCHRONOUS 1
/// Bulk endpoint type.
#define USBEndpointDescriptor_BULK 2
/// Interrupt endpoint type.
#define USBEndpointDescriptor_INTERRUPT 3
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
/// \page "USB Endpoint maximun sizes"
///
/// This page lists definitions of USB endpoint maximun sizes.
///
/// !Sizes
/// - USBEndpointDescriptor_MAXCTRLSIZE_FS
/// - USBEndpointDescriptor_MAXCTRLSIZE_HS
/// - USBEndpointDescriptor_MAXBULKSIZE_FS
/// - USBEndpointDescriptor_MAXBULKSIZE_HS
/// - USBEndpointDescriptor_MAXINTERRUPTSIZE_FS
/// - USBEndpointDescriptor_MAXINTERRUPTSIZE_HS
/// - USBEndpointDescriptor_MAXISOCHRONOUSSIZE_FS
/// - USBEndpointDescriptor_MAXISOCHRONOUSSIZE_HS
/// Maximum size for a full-speed control endpoint.
#define USBEndpointDescriptor_MAXCTRLSIZE_FS 64
/// Maximum size for a high-speed control endpoint.
#define USBEndpointDescriptor_MAXCTRLSIZE_HS 64
/// Maximum size for a full-speed bulk endpoint.
#define USBEndpointDescriptor_MAXBULKSIZE_FS 64
/// Maximum size for a high-speed bulk endpoint.
#define USBEndpointDescriptor_MAXBULKSIZE_HS 512
/// Maximum size for a full-speed interrupt endpoint.
#define USBEndpointDescriptor_MAXINTERRUPTSIZE_FS 64
/// Maximum size for a high-speed interrupt endpoint.
#define USBEndpointDescriptor_MAXINTERRUPTSIZE_HS 1024
/// Maximum size for a full-speed isochronous endpoint.
#define USBEndpointDescriptor_MAXISOCHRONOUSSIZE_FS 1023
/// Maximum size for a high-speed isochronous endpoint.
#define USBEndpointDescriptor_MAXISOCHRONOUSSIZE_HS 1024
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
/// \page "USB Endpoint address define"
///
/// This page lists macro for USB endpoint address definition.
///
/// !Macro
/// - USBEndpointDescriptor_ADDRESS
/// Calculates the address of an endpoint given its number and direction
/// \param direction USB endpoint direction definition
/// \param number USB endpoint number
/// \return The value used to set the endpoint descriptor based on input number
/// and direction
#define USBEndpointDescriptor_ADDRESS(direction, number) \
(((direction & 0x01) << 7) | (number & 0xF))
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
// Types
//------------------------------------------------------------------------------
#ifdef __ICCARM__ // IAR
#pragma pack(1) // IAR
#define __attribute__(...) // IAR
#endif // IAR
//------------------------------------------------------------------------------
/// USB standard endpoint descriptor structure.
//------------------------------------------------------------------------------
typedef struct {
/// Size of the descriptor in bytes.
unsigned char bLength;
/// Descriptor type (<USBGenericDescriptor_ENDPOINT>).
unsigned char bDescriptorType;
/// Address and direction of the endpoint.
unsigned char bEndpointAddress;
/// Endpoint type and additional characteristics (for isochronous endpoints).
unsigned char bmAttributes;
/// Maximum packet size (in bytes) of the endpoint.
unsigned short wMaxPacketSize;
/// Polling rate of the endpoint.
unsigned char bInterval;
} __attribute__ ((packed)) USBEndpointDescriptor; // GCC
#ifdef __ICCARM__ // IAR
#pragma pack() // IAR
#endif // IAR
//------------------------------------------------------------------------------
// Exported functions
//------------------------------------------------------------------------------
extern unsigned char USBEndpointDescriptor_GetNumber(
const USBEndpointDescriptor *endpoint);
extern unsigned char USBEndpointDescriptor_GetDirection(
const USBEndpointDescriptor *endpoint);
extern unsigned char USBEndpointDescriptor_GetType(
const USBEndpointDescriptor *endpoint);
extern unsigned short USBEndpointDescriptor_GetMaxPacketSize(
const USBEndpointDescriptor *endpoint);
extern unsigned char USBEndpointDescriptor_GetInterval(
const USBEndpointDescriptor *endpoint);
#endif //#ifndef USBENDPOINTDESCRIPTOR_H
|
