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/*************************************************************************** |
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* Copyright (c) 2024 Microsoft Corporation |
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* Copyright (c) 2026-present Eclipse ThreadX contributors |
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* |
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* This program and the accompanying materials are made available under the |
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* terms of the MIT License which is available at |
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* https://opensource.org/licenses/MIT. |
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* |
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* SPDX-License-Identifier: MIT |
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**************************************************************************/ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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/** */ |
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/** USBX Component */ |
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/** */ |
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/** HID Class */ |
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/** */ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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/* Include necessary system files. */ |
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#define UX_SOURCE_CODE |
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#include "ux_api.h" |
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#include "ux_host_class_hid.h" |
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#include "ux_host_stack.h" |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _ux_host_class_hid_periodic_report_start PORTABLE C */ |
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/* 6.1.10 */ |
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/* AUTHOR */ |
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/* */ |
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/* Chaoqiong Xiao, Microsoft Corporation */ |
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/* */ |
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/* DESCRIPTION */ |
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/* */ |
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/* This function starts the interrupt endpoint to obtain the periodic */ |
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/* report. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* hid Pointer to HID class */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* Completion Status */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* _ux_host_stack_class_instance_verify Verify instance is valid */ |
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/* _ux_host_stack_transfer_request Process transfer request */ |
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/* _ux_host_semaphore_get Get protection semaphore */ |
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/* _ux_host_semaphore_put Release protection semaphore */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* Application */ |
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/* HID Class */ |
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/* */ |
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/**************************************************************************/ |
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UINT _ux_host_class_hid_periodic_report_start(UX_HOST_CLASS_HID *hid) |
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{ |
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#if defined(UX_HOST_STANDALONE) |
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UX_INTERRUPT_SAVE_AREA |
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#endif |
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UINT status; |
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UX_TRANSFER *transfer_request; |
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/* Ensure the instance is valid. */ |
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✓✓ |
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if (_ux_host_stack_class_instance_verify(_ux_system_host_class_hid_name, (VOID *) hid) != UX_SUCCESS) |
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{ |
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/* Error trap. */ |
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_ux_system_error_handler(UX_SYSTEM_LEVEL_THREAD, UX_SYSTEM_CONTEXT_CLASS, UX_HOST_CLASS_INSTANCE_UNKNOWN); |
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/* If trace is enabled, insert this event into the trace buffer. */ |
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UX_TRACE_IN_LINE_INSERT(UX_TRACE_ERROR, UX_HOST_CLASS_INSTANCE_UNKNOWN, hid, 0, 0, UX_TRACE_ERRORS, 0, 0) |
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return(UX_HOST_CLASS_INSTANCE_UNKNOWN); |
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} |
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/* Protect thread reentry to this instance. */ |
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✓✓ |
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_ux_host_class_hid_lock_fail_return(hid); |
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/* Check the status of the interrupt endpoint. */ |
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✓✓ |
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if (hid -> ux_host_class_hid_interrupt_endpoint_status != UX_HOST_CLASS_HID_INTERRUPT_ENDPOINT_READY) |
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{ |
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/* Unprotect thread reentry to this instance. */ |
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_ux_host_class_hid_unlock(hid); |
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/* Error trap. */ |
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_ux_system_error_handler(UX_SYSTEM_LEVEL_THREAD, UX_SYSTEM_CONTEXT_CLASS, UX_HOST_CLASS_HID_PERIODIC_REPORT_ERROR); |
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/* If trace is enabled, insert this event into the trace buffer. */ |
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UX_TRACE_IN_LINE_INSERT(UX_TRACE_ERROR, UX_HOST_CLASS_HID_PERIODIC_REPORT_ERROR, hid, 0, 0, UX_TRACE_ERRORS, 0, 0) |
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/* Return error status. */ |
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return(UX_HOST_CLASS_HID_PERIODIC_REPORT_ERROR); |
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} |
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/* Get the address of the HID associated with the interrupt endpoint. */ |
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transfer_request = &hid -> ux_host_class_hid_interrupt_endpoint -> ux_endpoint_transfer_request; |
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/* The transfer on the interrupt endpoint can be started. */ |
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status = _ux_host_stack_transfer_request(transfer_request); |
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/* Check the status. If no error, adjust the status of the periodic endpoint |
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to active. */ |
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✓✓ |
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if (status == UX_SUCCESS) |
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hid -> ux_host_class_hid_interrupt_endpoint_status = UX_HOST_CLASS_HID_INTERRUPT_ENDPOINT_ACTIVE; |
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/* Unprotect thread reentry to this instance. */ |
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_ux_host_class_hid_unlock(hid); |
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/* Return the function status */ |
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return(status); |
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} |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _uxe_host_class_hid_periodic_report_start PORTABLE C */ |
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/* 6.3.0 */ |
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/* AUTHOR */ |
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/* */ |
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/* Chaoqiong Xiao, Microsoft Corporation */ |
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/* */ |
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/* DESCRIPTION */ |
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/* */ |
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/* This function checks errors in HID periodic report start function */ |
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/* call. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* hid Pointer to HID class */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* Status */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* _ux_host_class_hid_periodic_report_start */ |
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/* Start polling periodic report */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* Application */ |
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/* */ |
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/**************************************************************************/ |
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UINT _uxe_host_class_hid_periodic_report_start(UX_HOST_CLASS_HID *hid) |
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{ |
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/* Sanity check. */ |
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if (hid == UX_NULL) |
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return(UX_INVALID_PARAMETER); |
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/* Invoke periodic start function. */ |
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return(_ux_host_class_hid_periodic_report_start(hid)); |
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} |