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/***************************************************************************
* Copyright (c) 2024 Microsoft Corporation
* Copyright (c) 2026-present Eclipse ThreadX contributors
*
* This program and the accompanying materials are made available under the
* terms of the MIT License which is available at
* https://opensource.org/licenses/MIT.
*
* SPDX-License-Identifier: MIT
**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** USBX Component */
/** */
/** HID Keyboard Client */
/** */
/**************************************************************************/
/**************************************************************************/
/* Include necessary system files. */
#define UX_SOURCE_CODE
#include "ux_api.h"
#include "ux_host_class_hid.h"
#include "ux_host_class_hid_keyboard.h"
#include "ux_host_stack.h"
#if defined(UX_HOST_STANDALONE)
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_host_class_hid_keyboard_tasks_run PORTABLE C */
/* 6.2.0 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This file contains the keyboard tasks used to process the changes */
/* in the keyboard LEDs. */
/* */
/* It's for standalone mode. */
/* */
/* INPUT */
/* */
/* client The keyboard client */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* _ux_host_class_hid_report_id_get Get report ID */
/* _ux_host_class_hid_report_set Do SET_REPORT */
/* */
/* CALLED BY */
/* */
/* USBX Host HID */
/* */
/**************************************************************************/
VOID _ux_host_class_hid_keyboard_tasks_run(UX_HOST_CLASS_HID_CLIENT *client)
{
UX_HOST_CLASS_HID_KEYBOARD *keyboard;
UX_HOST_CLASS_HID *hid;
UX_HOST_CLASS_HID_CLIENT_REPORT client_report;
UX_HOST_CLASS_HID_REPORT_GET_ID report_id;
UINT status;
/* Sanity check. */
if (client == UX_NULL)
return;
/* Get keyboard instance. */
keyboard = (UX_HOST_CLASS_HID_KEYBOARD *)client -> ux_host_class_hid_client_local_instance;
if (keyboard == UX_NULL)
return;
/* Get HID instance. */
hid = keyboard -> ux_host_class_hid_keyboard_hid;
if (hid == UX_NULL)
return;
/* Check if there is pending chnages. */
if (keyboard -> ux_host_class_hid_keyboard_out_state != UX_STATE_WAIT)
return;
/* We got awaken by the keyboard callback which indicates a change on
the LEDs has to happen. We need to build the field for the LEDs. */
keyboard -> ux_host_class_hid_keyboard_led_mask =
keyboard -> ux_host_class_hid_keyboard_alternate_key_state &
UX_HID_KEYBOARD_STATE_MASK_LOCK;
/* We need to find the OUTPUT report for the keyboard LEDs. */
if (keyboard -> ux_host_class_hid_keyboard_out_report == UX_NULL)
{
report_id.ux_host_class_hid_report_get_report = UX_NULL;
report_id.ux_host_class_hid_report_get_type = UX_HOST_CLASS_HID_REPORT_TYPE_OUTPUT;
status = _ux_host_class_hid_report_id_get(hid, &report_id);
if (status != UX_SUCCESS)
{
keyboard -> ux_host_class_hid_keyboard_status = status;
return;
}
keyboard -> ux_host_class_hid_keyboard_out_report = report_id.ux_host_class_hid_report_get_report;
}
/* Build a RAW client report. */
client_report.ux_host_class_hid_client_report = keyboard -> ux_host_class_hid_keyboard_out_report;
client_report.ux_host_class_hid_client_report_flags = UX_HOST_CLASS_HID_REPORT_RAW;
client_report.ux_host_class_hid_client_report_length = 1;
client_report.ux_host_class_hid_client_report_buffer = &keyboard -> ux_host_class_hid_keyboard_led_mask;
/* The HID class will perform the SET_REPORT command. */
status = _ux_host_class_hid_report_set_run(hid, &client_report);
if (status < UX_STATE_WAIT)
{
/* Update status. */
keyboard -> ux_host_class_hid_keyboard_status = hid -> ux_host_class_hid_status;
/* The change is processed. */
keyboard -> ux_host_class_hid_keyboard_out_state = UX_STATE_IDLE;
}
}
#endif
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