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common/usbx_host_classes/src/ux_host_class_cdc_acm_transfer_request_completed.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 */
/** */
/** CDC_ACM Class */
/** */
/**************************************************************************/
/**************************************************************************/
/* Include necessary system files. */
#define UX_SOURCE_CODE
#include "ux_api.h"
#include "ux_host_class_cdc_acm.h"
#include "ux_host_stack.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_host_class_cdc_acm_transfer_request_completed PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function is called by the completion thread when a transfer */
/* request has been completed either because the transfer is */
/* successful or there was an error. */
/* */
/* INPUT */
/* */
/* transfer_request Pointer to transfer request */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* _ux_host_stack_transfer_request Transfer request */
/* _ux_utility_short_get Get 16-bit value */
/* */
/* CALLED BY */
/* */
/* USBX stack */
/* */
/* 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 */
/* */
/**************************************************************************/
VOID _ux_host_class_cdc_acm_transfer_request_completed(UX_TRANSFER *transfer_request)
{
UX_HOST_CLASS_CDC_ACM *cdc_acm;
ULONG notification_type;
ULONG notification_value;
/* Get the class instance for this transfer request. */
cdc_acm = (UX_HOST_CLASS_CDC_ACM *) transfer_request -> ux_transfer_request_class_instance;
/* Check the state of the transfer. If there is an error, we do not proceed with this notification. */
if (transfer_request -> ux_transfer_request_completion_code != UX_SUCCESS)
/* We do not proceed. */
return;
/* Increment the notification count. */
cdc_acm -> ux_host_class_cdc_acm_notification_count++;
/* Get the notification. */
notification_type = (ULONG) *(transfer_request -> ux_transfer_request_data_pointer + UX_HOST_CLASS_CDC_ACM_NPF_NOTIFICATION_TYPE);
/* And the value. */
notification_value = (ULONG) _ux_utility_short_get(transfer_request -> ux_transfer_request_data_pointer + UX_HOST_CLASS_CDC_ACM_NPF_VALUE);
/* If there is a callback present, invoke it. */
if (cdc_acm -> ux_host_class_cdc_acm_device_status_change_callback != UX_NULL)
/* There is a callback, send the status change to the application. */
cdc_acm -> ux_host_class_cdc_acm_device_status_change_callback(cdc_acm, notification_type, notification_value);
/* Reactivate the CDC_ACM interrupt pipe. */
_ux_host_stack_transfer_request(transfer_request);
/* Return to caller. */
return;
}