1 /**************************************************************************/
2 /* */
3 /* Copyright (c) Microsoft Corporation. All rights reserved. */
4 /* */
5 /* This software is licensed under the Microsoft Software License */
6 /* Terms for Microsoft Azure RTOS. Full text of the license can be */
7 /* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
8 /* and in the root directory of this software. */
9 /* */
10 /**************************************************************************/
11
12 /**************************************************************************/
13 /**************************************************************************/
14 /** */
15 /** USBX Component */
16 /** */
17 /** Device CDC Class */
18 /** */
19 /**************************************************************************/
20 /**************************************************************************/
21
22 #define UX_SOURCE_CODE
23
24
25 /* Include necessary system files. */
26
27 #include "ux_api.h"
28 #include "ux_device_class_cdc_acm.h"
29 #include "ux_device_stack.h"
30
31
32 /**************************************************************************/
33 /* */
34 /* FUNCTION RELEASE */
35 /* */
36 /* _ux_device_class_cdc_acm_uninitialize PORTABLE C */
37 /* 6.1.12 */
38 /* AUTHOR */
39 /* */
40 /* Chaoqiong Xiao, Microsoft Corporation */
41 /* */
42 /* DESCRIPTION */
43 /* */
44 /* This function uninitialize the cdc-acm class. */
45 /* */
46 /* INPUT */
47 /* */
48 /* command Pointer to a class command */
49 /* */
50 /* OUTPUT */
51 /* */
52 /* Completion Status */
53 /* */
54 /* CALLS */
55 /* */
56 /* _ux_device_mutex_delete Delete Mutex */
57 /* _ux_utility_memory_free Free used local memory */
58 /* */
59 /* CALLED BY */
60 /* */
61 /* CDC Class */
62 /* */
63 /* RELEASE HISTORY */
64 /* */
65 /* DATE NAME DESCRIPTION */
66 /* */
67 /* 05-19-2020 Chaoqiong Xiao Initial Version 6.0 */
68 /* 09-30-2020 Chaoqiong Xiao Modified comment(s), */
69 /* resulting in version 6.1 */
70 /* 04-02-2021 Chaoqiong Xiao Modified comment(s), */
71 /* added macro to disable */
72 /* transmission support, */
73 /* moved transmission resource */
74 /* free to here (uninit), */
75 /* resulting in version 6.1.6 */
76 /* 01-31-2022 Chaoqiong Xiao Modified comment(s), */
77 /* added standalone support, */
78 /* resulting in version 6.1.10 */
79 /* 04-25-2022 Chaoqiong Xiao Modified comment(s), */
80 /* resulting in version 6.1.11 */
81 /* 07-29-2022 Chaoqiong Xiao Modified comment(s), */
82 /* fixed parameter/variable */
83 /* names conflict C++ keyword, */
84 /* resulting in version 6.1.12 */
85 /* */
86 /**************************************************************************/
_ux_device_class_cdc_acm_uninitialize(UX_SLAVE_CLASS_COMMAND * command)87 UINT _ux_device_class_cdc_acm_uninitialize(UX_SLAVE_CLASS_COMMAND *command)
88 {
89
90 UX_SLAVE_CLASS_CDC_ACM *cdc_acm;
91 UX_SLAVE_CLASS *class_ptr;
92
93 /* Get the class container. */
94 class_ptr = command -> ux_slave_class_command_class_ptr;
95
96 /* Get the class instance in the container. */
97 cdc_acm = (UX_SLAVE_CLASS_CDC_ACM *) class_ptr -> ux_slave_class_instance;
98
99 /* Sanity check. */
100 if (cdc_acm != UX_NULL)
101 {
102
103 #if !defined(UX_DEVICE_STANDALONE)
104
105 /* Delete the IN endpoint mutex. */
106 _ux_device_mutex_delete(&cdc_acm -> ux_slave_class_cdc_acm_endpoint_in_mutex);
107
108 /* Out Mutex. */
109 _ux_device_mutex_delete(&cdc_acm -> ux_slave_class_cdc_acm_endpoint_out_mutex);
110
111 #ifndef UX_DEVICE_CLASS_CDC_ACM_TRANSMISSION_DISABLE
112
113 /* Free resources and return error. */
114 _ux_utility_thread_delete(&cdc_acm -> ux_slave_class_cdc_acm_bulkin_thread);
115 _ux_utility_thread_delete(&cdc_acm -> ux_slave_class_cdc_acm_bulkout_thread);
116 _ux_utility_event_flags_delete(&cdc_acm -> ux_slave_class_cdc_acm_event_flags_group);
117 _ux_utility_memory_free(cdc_acm -> ux_slave_class_cdc_acm_bulkout_thread_stack);
118 #endif
119 #endif
120
121 /* Free the resources. */
122 _ux_utility_memory_free(cdc_acm);
123
124 }
125
126 /* Return completion status. */
127 return(UX_SUCCESS);
128 }
129
130
