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common/usbx_stm32_device_controllers/ux_dcd_stm32_endpoint_status.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 */
/** */
/** STM32 Controller Driver */
/** */
/**************************************************************************/
/**************************************************************************/
#define UX_SOURCE_CODE
#define UX_DCD_STM32_SOURCE_CODE
/* Include necessary system files. */
#include "ux_api.h"
#include "ux_dcd_stm32.h"
#include "ux_device_stack.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_dcd_stm32_endpoint_status PORTABLE C */
/* 6.1.10 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function will retrieve the status of the endpoint. */
/* */
/* INPUT */
/* */
/* dcd_stm32 Pointer to device controller */
/* endpoint_index Endpoint index */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* None */
/* */
/* CALLED BY */
/* */
/* STM32 Controller Driver */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 05-19-2020 Chaoqiong Xiao Initial Version 6.0 */
/* 09-30-2020 Chaoqiong Xiao Modified comment(s), used ST */
/* HAL library to drive the */
/* controller, */
/* resulting in version 6.1 */
/* 01-31-2022 Chaoqiong Xiao Modified comment(s), */
/* added bi-dir EP support, */
/* resulting in version 6.1.10 */
/* */
/**************************************************************************/
UINT _ux_dcd_stm32_endpoint_status(UX_DCD_STM32 *dcd_stm32, ULONG endpoint_index)
{
UX_DCD_STM32_ED *ed;
/* Fetch the address of the physical endpoint. */
ed = _stm32_ed_get(dcd_stm32, endpoint_index);
/* Check the endpoint status, if it is free, we have a illegal endpoint. */
if ((ed -> ux_dcd_stm32_ed_status & UX_DCD_STM32_ED_STATUS_USED) == 0)
return(UX_ERROR);
/* Check if the endpoint is stalled. */
if ((ed -> ux_dcd_stm32_ed_status & UX_DCD_STM32_ED_STATUS_STALLED) == 0)
return(UX_FALSE);
else
return(UX_TRUE);
}