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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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/** Device CDC Class */ |
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/** */ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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#define UX_SOURCE_CODE |
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/* Include necessary system files. */ |
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#include "ux_api.h" |
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#include "ux_device_class_cdc_acm.h" |
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#include "ux_device_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_device_class_cdc_acm_entry PORTABLE C */ |
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/* 6.x */ |
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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 is the entry point of the cdc_acm class. It */ |
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/* will be called by the device stack enumeration module when the */ |
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/* host has sent a SET_CONFIGURATION command and the cdc_acm interface */ |
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/* needs to be mounted. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* command Pointer to class command */ |
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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_device_class_cdc_acm_initialize Initialize cdc_acm class */ |
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/* _ux_device_class_cdc_acm_uninitialize Uninitialize cdc_acm class*/ |
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/* _ux_device_class_cdc_acm_activate Activate cdc_acm class */ |
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/* _ux_device_class_cdc_acm_deactivate Deactivate cdc_acm class */ |
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/* _ux_device_class_cdc_acm_control_request Request control */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* CDC Class */ |
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/* */ |
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/**************************************************************************/ |
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UINT _ux_device_class_cdc_acm_entry(UX_SLAVE_CLASS_COMMAND *command) |
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{ |
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UINT status; |
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/* The command request will tell us we need to do here, either a enumeration |
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query, an activation or a deactivation. */ |
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✓✓✓✓
✓✓✓ |
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switch (command -> ux_slave_class_command_request) |
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{ |
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case UX_SLAVE_CLASS_COMMAND_INITIALIZE: |
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/* Call the init function of the CDC ACM class. */ |
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status = _ux_device_class_cdc_acm_initialize(command); |
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/* Return the completion status. */ |
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return(status); |
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case UX_SLAVE_CLASS_COMMAND_UNINITIALIZE: |
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/* Call the uninit function of the CDC ACM class. */ |
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status = _ux_device_class_cdc_acm_uninitialize(command); |
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/* Return the completion status. */ |
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return(status); |
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case UX_SLAVE_CLASS_COMMAND_QUERY: |
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/* Check the CLASS definition in the interface descriptor. */ |
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✓✓ |
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if (command -> ux_slave_class_command_class == UX_SLAVE_CLASS_CDC_ACM_CLASS) |
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return(UX_SUCCESS); |
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else |
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return(UX_NO_CLASS_MATCH); |
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case UX_SLAVE_CLASS_COMMAND_ACTIVATE: |
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/* The activate command is used when the host has sent a SET_CONFIGURATION command |
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and this interface has to be mounted. Both Bulk endpoints have to be mounted |
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and the cdc_acm thread needs to be activated. */ |
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status = _ux_device_class_cdc_acm_activate(command); |
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/* Return the completion status. */ |
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return(status); |
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case UX_SLAVE_CLASS_COMMAND_DEACTIVATE: |
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/* The deactivate command is used when the device has been extracted. |
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The device endpoints have to be dismounted and the cdc_acm thread canceled. */ |
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status = _ux_device_class_cdc_acm_deactivate(command); |
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/* Return the completion status. */ |
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return(status); |
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case UX_SLAVE_CLASS_COMMAND_REQUEST: |
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/* The request command is used when the host sends a command on the control endpoint. */ |
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status = _ux_device_class_cdc_acm_control_request(command); |
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/* Return the completion status. */ |
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return(status); |
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default: |
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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_FUNCTION_NOT_SUPPORTED, 0, 0, 0, UX_TRACE_ERRORS, 0, 0) |
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/* Return an error. */ |
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return(UX_FUNCTION_NOT_SUPPORTED); |
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} |
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} |
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