1 /***************************************************************************
2 * Copyright (c) 2024 Microsoft Corporation
3 *
4 * This program and the accompanying materials are made available under the
5 * terms of the MIT License which is available at
6 * https://opensource.org/licenses/MIT.
7 *
8 * SPDX-License-Identifier: MIT
9 **************************************************************************/
10
11
12 /**************************************************************************/
13 /**************************************************************************/
14 /** */
15 /** USBX Component */
16 /** */
17 /** Device Stack */
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_stack.h"
29
30
31 /**************************************************************************/
32 /* */
33 /* FUNCTION RELEASE */
34 /* */
35 /* _ux_device_stack_configuration_get PORTABLE C */
36 /* 6.1 */
37 /* AUTHOR */
38 /* */
39 /* Chaoqiong Xiao, Microsoft Corporation */
40 /* */
41 /* DESCRIPTION */
42 /* */
43 /* This function gets the current configuration for the device. */
44 /* */
45 /* INPUT */
46 /* */
47 /* None */
48 /* */
49 /* OUTPUT */
50 /* */
51 /* Completion Status */
52 /* */
53 /* CALLS */
54 /* */
55 /* _ux_device_stack_transfer_request Transfer request */
56 /* */
57 /* CALLED BY */
58 /* */
59 /* Application */
60 /* Device Stack */
61 /* */
62 /* RELEASE HISTORY */
63 /* */
64 /* DATE NAME DESCRIPTION */
65 /* */
66 /* 05-19-2020 Chaoqiong Xiao Initial Version 6.0 */
67 /* 09-30-2020 Chaoqiong Xiao Modified comment(s), */
68 /* resulting in version 6.1 */
69 /* */
70 /**************************************************************************/
_ux_device_stack_configuration_get(VOID)71 UINT _ux_device_stack_configuration_get(VOID)
72 {
73
74 UX_SLAVE_TRANSFER *transfer_request;
75 UX_SLAVE_DEVICE *device;
76 UX_SLAVE_ENDPOINT *endpoint;
77 UINT status;
78
79 /* Get the pointer to the device. */
80 device = &_ux_system_slave -> ux_system_slave_device;
81
82 /* Get the control endpoint for the device. */
83 endpoint = &device -> ux_slave_device_control_endpoint;
84
85 /* Get the pointer to the transfer request associated with the endpoint. */
86 transfer_request = &endpoint -> ux_slave_endpoint_transfer_request;
87
88 /* Set the value of the configuration in the buffer. */
89 *transfer_request -> ux_slave_transfer_request_data_pointer =
90 (UCHAR) device -> ux_slave_device_configuration_selected;
91
92 /* If trace is enabled, insert this event into the trace buffer. */
93 UX_TRACE_IN_LINE_INSERT(UX_TRACE_DEVICE_STACK_CONFIGURATION_GET, device -> ux_slave_device_configuration_selected, 0, 0, 0, UX_TRACE_DEVICE_STACK_EVENTS, 0, 0)
94
95 /* Set the phase of the transfer to data out. */
96 transfer_request -> ux_slave_transfer_request_phase = UX_TRANSFER_PHASE_DATA_OUT;
97
98 /* Send the descriptor with the appropriate length to the host. */
99 status = _ux_device_stack_transfer_request(transfer_request, 1, 1);
100
101 /* Return the function status. */
102 return(status);
103 }
104
105
