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common/usbx_host_classes/src/ux_host_class_hid_mouse_activate.c
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/**************************************************************************/
/* */
/* Copyright (c) Microsoft Corporation. All rights reserved. */
/* */
/* This software is licensed under the Microsoft Software License */
/* Terms for Microsoft Azure RTOS. Full text of the license can be */
/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
/* and in the root directory of this software. */
/* */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** USBX Component */
/** */
/** HID Mouse Client Class */
/** */
/**************************************************************************/
/**************************************************************************/
/* Include necessary system files. */
#define UX_SOURCE_CODE
#include "ux_api.h"
#include "ux_host_class_hid.h"
#include "ux_host_class_hid_mouse.h"
#include "ux_host_stack.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_host_class_hid_mouse_activate PORTABLE C */
/* 6.1.10 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function performs the enumeration of a HID mouse. */
/* */
/* INPUT */
/* */
/* command Pointer to command */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* _ux_host_class_hid_idle_set Set idle rate */
/* _ux_host_class_hid_report_callback_register */
/* Register report callback */
/* _ux_host_class_hid_report_id_get Get report ID */
/* _ux_host_class_hid_periodic_report_start */
/* Start periodic report */
/* _ux_utility_memory_allocate Allocate memory block */
/* _ux_utility_memory_free Free memory block */
/* */
/* CALLED BY */
/* */
/* HID Mouse Class */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 05-19-2020 Chaoqiong Xiao Initial Version 6.0 */
/* 09-30-2020 Chaoqiong Xiao Modified comment(s), */
/* resulting in version 6.1 */
/* 01-31-2022 Chaoqiong Xiao Modified comment(s), */
/* added standalone support, */
/* resulting in version 6.1.10 */
/* */
/**************************************************************************/
UINT _ux_host_class_hid_mouse_activate(UX_HOST_CLASS_HID_CLIENT_COMMAND *command)
{
#if !defined(UX_HOST_STANDALONE)
UX_HOST_CLASS_HID_REPORT_CALLBACK call_back;
#endif
UX_HOST_CLASS_HID_REPORT_GET_ID report_id;
UX_HOST_CLASS_HID *hid;
UX_HOST_CLASS_HID_CLIENT *hid_client;
UX_HOST_CLASS_HID_MOUSE *mouse_instance;
UINT status;
/* Get the instance to the HID class. */
hid = command -> ux_host_class_hid_client_command_instance;
/* And of the HID client. */
hid_client = hid -> ux_host_class_hid_client;
/* Get some memory for both the HID class instance of this client
and for the callback. */
mouse_instance = (UX_HOST_CLASS_HID_MOUSE *) _ux_utility_memory_allocate(UX_NO_ALIGN, UX_REGULAR_MEMORY,
sizeof(UX_HOST_CLASS_HID_MOUSE));
if(mouse_instance == UX_NULL)
return(UX_MEMORY_INSUFFICIENT);
/* Attach the mouse instance to the client instance. */
hid_client -> ux_host_class_hid_client_local_instance = (VOID *) mouse_instance;
/* Save the HID instance in the client instance. */
mouse_instance -> ux_host_class_hid_mouse_hid = hid;
#if defined(UX_HOST_STANDALONE)
/* The instance is mounting now. */
mouse_instance -> ux_host_class_hid_mouse_state = UX_HOST_CLASS_INSTANCE_MOUNTING;
/* Get the report ID for the mouse. The mouse is a INPUT report.
This should be 0 but in case. */
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_INPUT;
status = _ux_host_class_hid_report_id_get(hid, &report_id);
/* The report ID should exist. */
if (status == UX_SUCCESS)
{
/* Save the mouse report ID. */
mouse_instance -> ux_host_class_hid_mouse_id = (USHORT)report_id.ux_host_class_hid_report_get_id;
/* Set state for activate wait steps. */
mouse_instance -> ux_host_class_hid_mouse_enum_state = UX_STATE_WAIT;
}
return(status);
#else
/* The instance is live now. */
mouse_instance -> ux_host_class_hid_mouse_state = UX_HOST_CLASS_INSTANCE_LIVE;
/* Get the report ID for the mouse. The mouse is a INPUT report.
This should be 0 but in case. */
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_INPUT;
status = _ux_host_class_hid_report_id_get(hid, &report_id);
/* The report ID should exist. */
if (status == UX_SUCCESS)
{
/* Save the mouse report ID. */
mouse_instance -> ux_host_class_hid_mouse_id = (USHORT)report_id.ux_host_class_hid_report_get_id;
/* Set the idle rate of the mouse to 0. This way a report is generated only when there is an activity. */
status = _ux_host_class_hid_idle_set(hid, 0, mouse_instance -> ux_host_class_hid_mouse_id);
/* Check for error, accept protocol error since it's optional for mouse. */
if (status == UX_TRANSFER_STALLED)
status = UX_SUCCESS;
}
/* If we are OK, go on. */
if (status == UX_SUCCESS)
{
/* Initialize the report callback. */
call_back.ux_host_class_hid_report_callback_id = mouse_instance -> ux_host_class_hid_mouse_id;
call_back.ux_host_class_hid_report_callback_function = _ux_host_class_hid_mouse_callback;
call_back.ux_host_class_hid_report_callback_buffer = UX_NULL;
call_back.ux_host_class_hid_report_callback_flags = UX_HOST_CLASS_HID_REPORT_INDIVIDUAL_USAGE;
call_back.ux_host_class_hid_report_callback_length = 0;
/* Register the report call back when data comes it on this report. */
status = _ux_host_class_hid_report_callback_register(hid, &call_back);
}
/* If we are OK, go on. */
if (status == UX_SUCCESS)
{
/* Start the periodic report. */
status = _ux_host_class_hid_periodic_report_start(hid);
if (status == UX_SUCCESS)
{
/* If all is fine and the device is mounted, we may need to inform the application
if a function has been programmed in the system structure. */
if (_ux_system_host -> ux_system_host_change_function != UX_NULL)
{
/* Call system change function. */
_ux_system_host -> ux_system_host_change_function(UX_HID_CLIENT_INSERTION, hid -> ux_host_class_hid_class, (VOID *) hid_client);
}
/* If trace is enabled, insert this event into the trace buffer. */
UX_TRACE_IN_LINE_INSERT(UX_TRACE_HOST_CLASS_HID_MOUSE_ACTIVATE, hid, mouse_instance, 0, 0, UX_TRACE_HOST_CLASS_EVENTS, 0, 0)
/* Return completion status. */
return(status);
}
}
/* We are here if there is error. */
/* Detach the client instance. */
hid_client -> ux_host_class_hid_client_local_instance = UX_NULL;
/* Free mouse client instance. */
_ux_utility_memory_free(mouse_instance);
/* Return completion status. */
return(status);
#endif
}