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 /** */
16 /** USBX Component */
17 /** */
18 /** Device Stack */
19 /** */
20 /**************************************************************************/
21 /**************************************************************************/
22
23 #define UX_SOURCE_CODE
24
25
26 /* Include necessary system files. */
27
28 #include "ux_api.h"
29 #include "ux_device_stack.h"
30
31
32 /**************************************************************************/
33 /* */
34 /* FUNCTION RELEASE */
35 /* */
36 /* _ux_device_stack_configuration_get PORTABLE C */
37 /* 6.1 */
38 /* AUTHOR */
39 /* */
40 /* Chaoqiong Xiao, Microsoft Corporation */
41 /* */
42 /* DESCRIPTION */
43 /* */
44 /* This function gets the current configuration for the device. */
45 /* */
46 /* INPUT */
47 /* */
48 /* None */
49 /* */
50 /* OUTPUT */
51 /* */
52 /* Completion Status */
53 /* */
54 /* CALLS */
55 /* */
56 /* _ux_device_stack_transfer_request Transfer request */
57 /* */
58 /* CALLED BY */
59 /* */
60 /* Application */
61 /* Device Stack */
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 /* */
71 /**************************************************************************/
_ux_device_stack_configuration_get(VOID)72 UINT _ux_device_stack_configuration_get(VOID)
73 {
74
75 UX_SLAVE_TRANSFER *transfer_request;
76 UX_SLAVE_DEVICE *device;
77 UX_SLAVE_ENDPOINT *endpoint;
78 UINT status;
79
80 /* Get the pointer to the device. */
81 device = &_ux_system_slave -> ux_system_slave_device;
82
83 /* Get the control endpoint for the device. */
84 endpoint = &device -> ux_slave_device_control_endpoint;
85
86 /* Get the pointer to the transfer request associated with the endpoint. */
87 transfer_request = &endpoint -> ux_slave_endpoint_transfer_request;
88
89 /* Set the value of the configuration in the buffer. */
90 *transfer_request -> ux_slave_transfer_request_data_pointer =
91 (UCHAR) device -> ux_slave_device_configuration_selected;
92
93 /* If trace is enabled, insert this event into the trace buffer. */
94 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)
95
96 /* Set the phase of the transfer to data out. */
97 transfer_request -> ux_slave_transfer_request_phase = UX_TRANSFER_PHASE_DATA_OUT;
98
99 /* Send the descriptor with the appropriate length to the host. */
100 status = _ux_device_stack_transfer_request(transfer_request, 1, 1);
101
102 /* Return the function status. */
103 return(status);
104 }
105
106
