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common/usbx_stm32_device_controllers/ux_dcd_stm32_uninitialize.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_uninitialize PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function uninitializes the USB device controller of the STM32 */
/* microcontroller from ST. */
/* */
/* Note: only software structures are uninitialized. STM32 HAL APIs */
/* must be used to uninitialize controller hardware BEFORE the */
/* function is invoked. */
/* */
/* INPUT */
/* */
/* dcd Address of DCD, not used */
/* parameter Parameter, STM32 HAL PCD */
/* pointer is expected */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* */
/* CALLED BY */
/* */
/* USBX Device Stack */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 09-30-2020 Chaoqiong Xiao Initial Version 6.1 */
/* */
/**************************************************************************/
UINT _ux_dcd_stm32_uninitialize(ULONG dcd_io, ULONG parameter)
{
UX_SLAVE_DCD *dcd;
UX_DCD_STM32 *dcd_stm32;
UX_PARAMETER_NOT_USED(dcd_io);
/* Get the pointer to the DCD. */
dcd = &_ux_system_slave -> ux_system_slave_dcd;
/* Set the state of the controller to HALTED now. */
dcd -> ux_slave_dcd_status = UX_DCD_STATUS_HALTED;
/* Get controller driver. */
dcd_stm32 = (UX_DCD_STM32 *)dcd -> ux_slave_dcd_controller_hardware;
/* Check parameter. */
if ((ULONG)dcd_stm32 -> pcd_handle == parameter)
{
_ux_utility_memory_free(dcd_stm32);
dcd -> ux_slave_dcd_controller_hardware = UX_NULL;
return(UX_SUCCESS);
}
/* Parameter not correct. */
return(UX_ERROR);
}