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
|
/***************************************************************************
* Copyright (c) 2024 Microsoft Corporation
* Copyright (c) 2026-present Eclipse ThreadX contributors
*
* This program and the accompanying materials are made available under the
* terms of the MIT License which is available at
* https://opensource.org/licenses/MIT.
*
* SPDX-License-Identifier: MIT
**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** USBX Component */
/** */
/** Printer Class */
/** */
/**************************************************************************/
/**************************************************************************/
/* Include necessary system files. */
#define UX_SOURCE_CODE
#include "ux_api.h"
#include "ux_host_class_printer.h"
#include "ux_host_stack.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_host_class_printer_soft_reset PORTABLE C */
/* 6.1.12 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function performs a soft reset of the printer in case the */
/* printer gets into an error mode. */
/* */
/* INPUT */
/* */
/* printer Pointer to printer class */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* _ux_host_stack_transfer_request Process transfer request */
/* _ux_host_semaphore_get Get protection semaphore */
/* _ux_host_semaphore_put Release protection semaphore */
/* */
/* CALLED BY */
/* */
/* Application */
/* */
/**************************************************************************/
UINT _ux_host_class_printer_soft_reset(UX_HOST_CLASS_PRINTER *printer)
{
#if defined(UX_HOST_STANDALONE)
UX_INTERRUPT_SAVE_AREA
#endif
UX_INTERFACE *interface_ptr;
UX_ENDPOINT *control_endpoint;
UX_TRANSFER *transfer_request;
UINT status;
/* If trace is enabled, insert this event into the trace buffer. */
UX_TRACE_IN_LINE_INSERT(UX_TRACE_HOST_CLASS_PRINTER_SOFT_RESET, printer, 0, 0, 0, UX_TRACE_HOST_CLASS_EVENTS, 0, 0)
/* Ensure the instance is valid. */
if (printer -> ux_host_class_printer_state != UX_HOST_CLASS_INSTANCE_LIVE)
{
/* Error trap. */
_ux_system_error_handler(UX_SYSTEM_LEVEL_THREAD, UX_SYSTEM_CONTEXT_CLASS, UX_HOST_CLASS_INSTANCE_UNKNOWN);
/* If trace is enabled, insert this event into the trace buffer. */
UX_TRACE_IN_LINE_INSERT(UX_TRACE_ERROR, UX_HOST_CLASS_INSTANCE_UNKNOWN, printer, 0, 0, UX_TRACE_ERRORS, 0, 0)
return(UX_HOST_CLASS_INSTANCE_UNKNOWN);
}
#if defined(UX_HOST_STANDALONE)
UX_DISABLE
if ((printer -> ux_host_class_printer_flags & UX_HOST_CLASS_PRINTER_FLAG_LOCK) ||
(printer -> ux_host_class_printer_device -> ux_device_flags & UX_DEVICE_FLAG_LOCK))
{
UX_RESTORE
return(UX_BUSY);
}
printer -> ux_host_class_printer_flags |= UX_HOST_CLASS_PRINTER_FLAG_LOCK;
printer -> ux_host_class_printer_device -> ux_device_flags |= UX_DEVICE_FLAG_LOCK;
UX_RESTORE
#else
/* Protect thread reentry to this instance. */
status = _ux_host_semaphore_get(&printer -> ux_host_class_printer_semaphore, UX_WAIT_FOREVER);
if (status != UX_SUCCESS)
/* Return error. */
return(status);
/* Protect the control endpoint semaphore here. It will be unprotected in the
transfer request function. */
status = _ux_utility_semaphore_get(&printer -> ux_host_class_printer_device -> ux_device_protection_semaphore, UX_WAIT_FOREVER);
/* Check for status. */
if (status != UX_SUCCESS)
{
_ux_utility_semaphore_put(&printer -> ux_host_class_printer_semaphore);
return(status);
}
#endif
/* We need to get the default control endpoint transfer request pointer. */
control_endpoint = &printer -> ux_host_class_printer_device -> ux_device_control_endpoint;
transfer_request = &control_endpoint -> ux_endpoint_transfer_request;
/* Need interface for wIndex. */
interface_ptr = printer -> ux_host_class_printer_interface;
/* Create a transfer_request for the SOFT_RESET request. */
transfer_request -> ux_transfer_request_data_pointer = UX_NULL;
transfer_request -> ux_transfer_request_requested_length = 0;
transfer_request -> ux_transfer_request_function = UX_HOST_CLASS_PRINTER_SOFT_RESET;
transfer_request -> ux_transfer_request_type = UX_REQUEST_OUT | UX_REQUEST_TYPE_CLASS | UX_REQUEST_TARGET_INTERFACE;
transfer_request -> ux_transfer_request_value = 0;
transfer_request -> ux_transfer_request_index = interface_ptr -> ux_interface_descriptor.bInterfaceNumber;
#if defined(UX_HOST_STANDALONE)
/* Enable auto unlock device. */
transfer_request -> ux_transfer_request_flags |= UX_TRANSFER_FLAG_AUTO_DEVICE_UNLOCK;
#endif
/* Send request to HCD layer. */
status = _ux_host_stack_transfer_request(transfer_request);
/* Unprotect thread reentry to this instance. */
_ux_host_class_printer_unlock(printer);
/* Return completion status. */
return(status);
}
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _uxe_host_class_printer_soft_reset PORTABLE C */
/* 6.3.0 */
/* AUTHOR */
/* */
/* Yajun Xia, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function checks errors in printer soft reset function call. */
/* */
/* INPUT */
/* */
/* printer Pointer to printer class */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* _ux_host_class_printer_soft_reset Printer soft reset */
/* */
/* CALLED BY */
/* */
/* Application */
/* */
/**************************************************************************/
UINT _uxe_host_class_printer_soft_reset(UX_HOST_CLASS_PRINTER *printer)
{
/* Sanity checks. */
if (printer == UX_NULL)
return(UX_INVALID_PARAMETER);
/* Call the actual printer soft reset function. */
return(_ux_host_class_printer_soft_reset(printer));
}
|
