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
|
/**************************************************************************/
/*!
@file cdc_host.c
@author hathach (tinyusb.org)
@section LICENSE
Software License Agreement (BSD License)
Copyright (c) 2013, hathach (tinyusb.org)
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. Neither the name of the copyright holders nor the
names of its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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.
This file is part of the tinyusb stack.
*/
/**************************************************************************/
#include "tusb_option.h"
#if (MODE_HOST_SUPPORTED && TUSB_CFG_HOST_CDC)
#define _TINY_USB_SOURCE_FILE_
//--------------------------------------------------------------------+
// INCLUDE
//--------------------------------------------------------------------+
#include "common/common.h"
#include "cdc_host.h"
//--------------------------------------------------------------------+
// MACRO CONSTANT TYPEDEF
//--------------------------------------------------------------------+
//--------------------------------------------------------------------+
// INTERNAL OBJECT & FUNCTION DECLARATION
//--------------------------------------------------------------------+
/*STATIC_*/ cdch_data_t cdch_data[TUSB_CFG_HOST_DEVICE_MAX];
//--------------------------------------------------------------------+
// USBH-CLASS DRIVER API
//--------------------------------------------------------------------+
void cdch_init(void)
{
memclr_(cdch_data, sizeof(cdch_data_t)*TUSB_CFG_HOST_DEVICE_MAX);
}
tusb_error_t cdch_open_subtask(uint8_t dev_addr, tusb_descriptor_interface_t const *p_interface_desc, uint16_t *p_length)
{
if ( CDC_COMM_SUBCLASS_ABSTRACT_CONTROL_MODEL != p_interface_desc->bInterfaceSubClass)
{
return TUSB_ERROR_CDCH_UNSUPPORTED_SUBCLASS;
}
if (CDC_COMM_PROTOCOL_ATCOMMAND != p_interface_desc->bInterfaceProtocol)
{
return TUSB_ERROR_CDCH_UNSUPPORTED_PROTOCOL;
}
uint8_t const * p_desc = descriptor_next ( (uint8_t const *) p_interface_desc );
cdch_data_t * p_cdc = &cdch_data[dev_addr-1];
p_cdc->interface_number = p_interface_desc->bInterfaceNumber;
p_cdc->interface_protocol = p_interface_desc->bInterfaceProtocol; // TODO 0xff is consider as rndis candidate, other is virtual Com
//------------- Communication Interface -------------//
(*p_length) = sizeof(tusb_descriptor_interface_t);
while( TUSB_DESC_TYPE_INTERFACE_CLASS_SPECIFIC == p_desc[DESCRIPTOR_OFFSET_TYPE] )
{ // Communication Functional Descriptors
(*p_length) += p_desc[DESCRIPTOR_OFFSET_LENGTH];
p_desc = descriptor_next(p_desc);
}
if ( TUSB_DESC_TYPE_ENDPOINT == p_desc[DESCRIPTOR_OFFSET_TYPE])
{ // notification endpoint if any
p_cdc->pipe_notification = hcd_pipe_open(dev_addr, (tusb_descriptor_endpoint_t const *) p_desc, TUSB_CLASS_CDC);
(*p_length) += p_desc[DESCRIPTOR_OFFSET_LENGTH];
p_desc = descriptor_next(p_desc);
ASSERT(pipehandle_is_valid(p_cdc->pipe_notification), TUSB_ERROR_HCD_OPEN_PIPE_FAILED);
}
//------------- Data Interface (if any) -------------//
if ( (TUSB_DESC_TYPE_INTERFACE == p_desc[DESCRIPTOR_OFFSET_TYPE]) &&
(TUSB_CLASS_CDC_DATA == ((tusb_descriptor_interface_t const *) p_desc)->bInterfaceClass) )
{
(*p_length) += p_desc[DESCRIPTOR_OFFSET_LENGTH];
p_desc = descriptor_next(p_desc);
// data endpoints expected to be in pairs
for(uint32_t i=0; i<2; i++)
{
tusb_descriptor_endpoint_t const *p_endpoint = (tusb_descriptor_endpoint_t const *) p_desc;
ASSERT_INT(TUSB_DESC_TYPE_ENDPOINT, p_endpoint->bDescriptorType, TUSB_ERROR_CDCH_DESCRIPTOR_CORRUPTED);
pipe_handle_t * p_pipe_hdl = ( p_endpoint->bEndpointAddress & TUSB_DIR_DEV_TO_HOST_MASK ) ?
&p_cdc->pipe_in : &p_cdc->pipe_out;
(*p_pipe_hdl) = hcd_pipe_open(dev_addr, p_endpoint, TUSB_CLASS_CDC);
ASSERT ( pipehandle_is_valid(*p_pipe_hdl), TUSB_ERROR_HCD_OPEN_PIPE_FAILED );
(*p_length) += p_desc[DESCRIPTOR_OFFSET_LENGTH];
p_desc = descriptor_next( p_desc );
}
}
return TUSB_ERROR_NONE;
}
void cdch_isr(pipe_handle_t pipe_hdl, tusb_event_t event)
{
}
void cdch_close(uint8_t dev_addr)
{
}
#endif
|
