1
10
13
14
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
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
...
...
...
#define UX_SOURCE_CODE
#include "ux_api.h"
#include "ux_host_stack.h"
...
...
UINT _ux_host_stack_interface_set(UX_INTERFACE *interface)
{
UX_DEVICE *device;
UX_CONFIGURATION *configuration;
UX_TRANSFER *transfer_request;
UINT status;
UX_ENDPOINT *control_endpoint;
UX_TRACE_IN_LINE_INSERT(UX_TRACE_HOST_STACK_INTERFACE_SET, interface, 0, 0, 0, UX_TRACE_HOST_STACK_EVENTS, 0, 0)
/* ... */
configuration = interface -> ux_interface_configuration;
device = configuration -> ux_configuration_device;
control_endpoint = &device -> ux_device_control_endpoint;
transfer_request = &control_endpoint -> ux_endpoint_transfer_request;
transfer_request -> ux_transfer_request_requested_length = 0;
transfer_request -> ux_transfer_request_function = UX_SET_INTERFACE;
transfer_request -> ux_transfer_request_type = UX_REQUEST_OUT | UX_REQUEST_TYPE_STANDARD | UX_REQUEST_TARGET_INTERFACE;
transfer_request -> ux_transfer_request_index = (USHORT) interface -> ux_interface_descriptor.bInterfaceNumber;
transfer_request -> ux_transfer_request_value = (USHORT) interface -> ux_interface_descriptor.bAlternateSetting;
status = _ux_host_stack_transfer_request(transfer_request);
return(status);
}{ ... }