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common/usbx_stm32_host_controllers/ux_hcd_stm32_transfer_abort.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 */
/** */
/**************************************************************************/
/**************************************************************************/
/* Include necessary system files. */
#define UX_SOURCE_CODE
#define UX_HCD_STM32_SOURCE_CODE
#include "ux_api.h"
#include "ux_hcd_stm32.h"
#include "ux_host_stack.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_hcd_stm32_transfer_abort PORTABLE C */
/* 6.0 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function will abort transactions attached to a transfer */
/* request. */
/* */
/* Note since ThreadX delay is used, the function must not be used in */
/* interrupts. */
/* */
/* INPUT */
/* */
/* hcd_stm32 Pointer to stm32 controller */
/* transfer_request Pointer to transfer request */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* _ux_utility_delay_ms Delay */
/* HAL_HCD_HC_Halt Halt host channel */
/* */
/* CALLED BY */
/* */
/* stm32 Controller Driver */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 05-19-2020 Chaoqiong Xiao Initial Version 6.0 */
/* */
/**************************************************************************/
UINT _ux_hcd_stm32_transfer_abort(UX_HCD_STM32 *hcd_stm32, UX_TRANSFER *transfer_request)
{
UX_ENDPOINT *endpoint;
UX_HCD_STM32_ED *ed;
/* Get the pointer to the endpoint associated with the transfer request. */
endpoint = (UX_ENDPOINT *) transfer_request -> ux_transfer_request_endpoint;
/* From the endpoint container, get the address of the physical endpoint. */
ed = (UX_HCD_STM32_ED *) endpoint -> ux_endpoint_ed;
/* Check if this physical endpoint has been initialized properly! */
if (ed == UX_NULL)
{
/* Error trap. */
_ux_system_error_handler(UX_SYSTEM_LEVEL_THREAD, UX_SYSTEM_CONTEXT_HCD, UX_ENDPOINT_HANDLE_UNKNOWN);
/* If trace is enabled, insert this event into the trace buffer. */
UX_TRACE_IN_LINE_INSERT(UX_TRACE_ERROR, UX_ENDPOINT_HANDLE_UNKNOWN, endpoint, 0, 0, UX_TRACE_ERRORS, 0, 0)
return(UX_ENDPOINT_HANDLE_UNKNOWN);
}
/* Save the transfer status in the ED. */
ed -> ux_stm32_ed_status = UX_HCD_STM32_ED_STATUS_ABORTED;
/* Halt the host channel. */
HAL_HCD_HC_Halt(hcd_stm32 -> hcd_handle, ed -> ux_stm32_ed_channel);
/* Wait for the controller to finish the current frame processing. */
_ux_utility_delay_ms(1);
/* Return successful completion. */
return(UX_SUCCESS);
}