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 /** PIMA Class */
18 /** */
19 /**************************************************************************/
20 /**************************************************************************/
21
22
23 /* Include necessary system files. */
24
25 #define UX_SOURCE_CODE
26
27 #include "ux_api.h"
28 #include "ux_host_class_pima.h"
29 #include "ux_host_stack.h"
30
31
32 /**************************************************************************/
33 /* */
34 /* FUNCTION RELEASE */
35 /* */
36 /* _ux_host_class_pima_device_reset PORTABLE C */
37 /* 6.1 */
38 /* AUTHOR */
39 /* */
40 /* Chaoqiong Xiao, Microsoft Corporation */
41 /* */
42 /* DESCRIPTION */
43 /* */
44 /* This function resets the device. */
45 /* INPUT */
46 /* */
47 /* pima Pointer to pima class */
48 /* */
49 /* OUTPUT */
50 /* */
51 /* Completion Status */
52 /* */
53 /* CALLS */
54 /* */
55 /* _ux_host_stack_transfer_request Transfer request */
56 /* */
57 /* CALLED BY */
58 /* */
59 /* USB application */
60 /* */
61 /* RELEASE HISTORY */
62 /* */
63 /* DATE NAME DESCRIPTION */
64 /* */
65 /* 05-19-2020 Chaoqiong Xiao Initial Version 6.0 */
66 /* 09-30-2020 Chaoqiong Xiao Modified comment(s), */
67 /* resulting in version 6.1 */
68 /* */
69 /**************************************************************************/
_ux_host_class_pima_device_reset(UX_HOST_CLASS_PIMA * pima)70 UINT _ux_host_class_pima_device_reset(UX_HOST_CLASS_PIMA *pima)
71 {
72
73 UX_TRANSFER *transfer_request;
74 UX_ENDPOINT *control_endpoint;
75 UINT status;
76
77 /* If trace is enabled, insert this event into the trace buffer. */
78 UX_TRACE_IN_LINE_INSERT(UX_TRACE_HOST_CLASS_PIMA_DEVICE_RESET, pima, 0, 0, 0, UX_TRACE_HOST_CLASS_EVENTS, 0, 0)
79
80 /* We need to get the default control endpoint transfer request pointer. */
81 control_endpoint = &pima -> ux_host_class_pima_device -> ux_device_control_endpoint;
82 transfer_request = &control_endpoint -> ux_endpoint_transfer_request;
83
84 /* Create a transfer_request for the CANCEL request. */
85 transfer_request -> ux_transfer_request_data_pointer = UX_NULL;
86 transfer_request -> ux_transfer_request_requested_length = 0;
87 transfer_request -> ux_transfer_request_function = UX_HOST_CLASS_PIMA_REQUEST_RESET_DEVICE;
88 transfer_request -> ux_transfer_request_type = UX_REQUEST_OUT | UX_REQUEST_TYPE_CLASS | UX_REQUEST_TARGET_INTERFACE;
89 transfer_request -> ux_transfer_request_value = 0;
90 transfer_request -> ux_transfer_request_index = 0;
91
92 /* Send request to HCD layer. */
93 status = _ux_host_stack_transfer_request(transfer_request);
94
95 /* Reset the session pointer if it was opened. A device reset closes the session. */
96 pima -> ux_host_class_pima_session = UX_NULL;
97
98 /* Return completion status. */
99 return(status);
100
101 }
102
103
