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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 */
/** */
/** Device DFU Class */
/** */
/**************************************************************************/
/**************************************************************************/
#define UX_SOURCE_CODE
/* Include necessary system files. */
#include "ux_api.h"
#include "ux_device_class_dfu.h"
#include "ux_device_stack.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_device_class_dfu_activate PORTABLE C */
/* 6.1.12 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function initializes the USB DFU device. */
/* This class can be activated either as part of the device primary */
/* framework or after a PORT_RESET detected. */
/* This is detected through the protocol field. If 1, we are in the */
/* device regular mode. If 2, we are activated through the DFU */
/* mode. */
/* */
/* INPUT */
/* */
/* command Pointer to dfu command */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* _ux_utility_memory_allocate Allocate memory */
/* */
/* CALLED BY */
/* */
/* USBX Source Code */
/* */
/**************************************************************************/
UINT _ux_device_class_dfu_activate(UX_SLAVE_CLASS_COMMAND *command)
{
UX_SLAVE_INTERFACE *interface_ptr;
UX_SLAVE_CLASS *class_ptr;
UX_SLAVE_CLASS_DFU *dfu;
/* Get the class container. */
class_ptr = command -> ux_slave_class_command_class_ptr;
/* Get the class instance in the container. */
dfu = (UX_SLAVE_CLASS_DFU *) class_ptr -> ux_slave_class_instance;
/* Get the interface that owns this instance. */
interface_ptr = (UX_SLAVE_INTERFACE *) command -> ux_slave_class_command_interface;
/* Store the class instance into the interface. */
interface_ptr -> ux_slave_interface_class_instance = (VOID *)dfu;
/* Now the opposite, store the interface in the class instance. */
dfu -> ux_slave_class_dfu_interface = interface_ptr;
/* Check the protocol activation field to determine in which state of the DFU class
we are. */
switch (command -> ux_slave_class_command_protocol)
{
case UX_SLAVE_CLASS_DFU_PROTOCOL_RUNTIME :
/* In the system, state the DFU state machine to application idle. */
_ux_system_slave -> ux_system_slave_device_dfu_state_machine = UX_SYSTEM_DFU_STATE_APP_IDLE;
/* Set the mode to Runtime. */
_ux_system_slave -> ux_system_slave_device_dfu_mode = UX_DEVICE_CLASS_DFU_MODE_RUNTIME ;
break;
case UX_SLAVE_CLASS_DFU_PROTOCOL_DFU_MODE :
/* In the system, state the DFU state machine to DFU idle. */
_ux_system_slave -> ux_system_slave_device_dfu_state_machine = UX_SYSTEM_DFU_STATE_DFU_IDLE;
/* Set the mode to DFU mode. */
_ux_system_slave -> ux_system_slave_device_dfu_mode = UX_DEVICE_CLASS_DFU_MODE_DFU ;
break;
default :
/* We should never get here. */
return(UX_ERROR);
}
/* If there is a activate function call it. */
if (dfu -> ux_slave_class_dfu_instance_activate != UX_NULL)
{
/* Invoke the application. */
dfu -> ux_slave_class_dfu_instance_activate(dfu);
}
/* If trace is enabled, insert this event into the trace buffer. */
UX_TRACE_IN_LINE_INSERT(UX_TRACE_DEVICE_CLASS_DFU_ACTIVATE, dfu, 0, 0, 0, UX_TRACE_DEVICE_CLASS_EVENTS, 0, 0)
/* If trace is enabled, register this object. */
UX_TRACE_OBJECT_REGISTER(UX_TRACE_DEVICE_OBJECT_TYPE_INTERFACE, dfu, 0, 0, 0)
/* Return completion status. */
return(UX_SUCCESS);
}
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