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common/usbx_device_classes/src/ux_device_class_storage_deactivate.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 */
/** */
/** Device Storage Class */
/** */
/**************************************************************************/
/**************************************************************************/
#define UX_SOURCE_CODE
/* Include necessary system files. */
#include "ux_api.h"
#include "ux_device_class_storage.h"
#include "ux_device_stack.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_device_class_storage_deactivate PORTABLE C */
/* 6.1.10 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function deactivate an instance of the storage class. */
/* */
/* INPUT */
/* */
/* command Pointer to a class command */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* _ux_device_stack_transfer_all_request_abort Abort all transfers */
/* */
/* CALLED BY */
/* */
/* Device Storage 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_device_class_storage_deactivate(UX_SLAVE_CLASS_COMMAND *command)
{
UX_SLAVE_CLASS_STORAGE *storage;
UX_SLAVE_ENDPOINT *endpoint_in;
UX_SLAVE_ENDPOINT *endpoint_out;
UX_SLAVE_CLASS *class;
/* Get the class container. */
class = command -> ux_slave_class_command_class_ptr;
/* Get the class instance in the container. */
storage = (UX_SLAVE_CLASS_STORAGE *)class -> ux_slave_class_instance;
#if defined(UX_DEVICE_STANDALONE)
endpoint_in = storage -> ux_device_class_storage_ep_in;
endpoint_out = storage -> ux_device_class_storage_ep_out;
_ux_device_stack_transfer_all_request_abort(endpoint_in, UX_TRANSFER_BUS_RESET);
_ux_device_stack_transfer_all_request_abort(endpoint_out, UX_TRANSFER_BUS_RESET);
endpoint_out -> ux_slave_endpoint_transfer_request.ux_slave_transfer_request_data_pointer =
storage -> ux_device_class_storage_buffer[0];
endpoint_in -> ux_slave_endpoint_transfer_request.ux_slave_transfer_request_data_pointer =
storage -> ux_device_class_storage_buffer[1];
#else
/* Locate the endpoints. */
endpoint_in = storage -> ux_slave_class_storage_interface -> ux_slave_interface_first_endpoint;
/* Check the endpoint direction, if IN we have the correct endpoint. */
if ((endpoint_in -> ux_slave_endpoint_descriptor.bEndpointAddress & UX_ENDPOINT_DIRECTION) != UX_ENDPOINT_IN)
{
/* Wrong direction, we found the OUT endpoint first. */
endpoint_out = endpoint_in;
/* So the next endpoint has to be the IN endpoint. */
endpoint_in = endpoint_out -> ux_slave_endpoint_next_endpoint;
}
else
{
/* We found the endpoint IN first, so next endpoint is OUT. */
endpoint_out = endpoint_in -> ux_slave_endpoint_next_endpoint;
}
/* Terminate the transactions pending on the endpoints. */
_ux_device_stack_transfer_all_request_abort(endpoint_in, UX_TRANSFER_BUS_RESET);
_ux_device_stack_transfer_all_request_abort(endpoint_out, UX_TRANSFER_BUS_RESET);
#endif
/* If there is a deactivate function call it. */
if (storage -> ux_slave_class_storage_instance_deactivate != UX_NULL)
{
/* Invoke the application. */
storage -> ux_slave_class_storage_instance_deactivate(storage);
}
/* If trace is enabled, insert this event into the trace buffer. */
UX_TRACE_IN_LINE_INSERT(UX_TRACE_DEVICE_CLASS_STORAGE_DEACTIVATE, storage, 0, 0, 0, UX_TRACE_DEVICE_CLASS_EVENTS, 0, 0)
/* If trace is enabled, register this object. */
UX_TRACE_OBJECT_UNREGISTER(storage);
/* Return completion status. */
return(UX_SUCCESS);
}