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common/usbx_stm32_device_controllers/ux_dcd_stm32_initialize_complete.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_system.h"
#include "ux_utility.h"
#include "ux_dcd_stm32.h"
#include "ux_device_stack.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_dcd_stm32_initialize_complete PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function completes the initialization of the USB slave */
/* controller for the STM32 chip. */
/* */
/* INPUT */
/* */
/* None */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* (ux_slave_dcd_function) Process the DCD function */
/* _ux_utility_descriptor_parse Parse descriptor */
/* _ux_utility_memory_allocate Allocate memory */
/* */
/* 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), */
/* prefixed UX to MS_TO_TICK, */
/* used ST HAL library to */
/* drive the controller, */
/* resulting in version 6.1 */
/* */
/**************************************************************************/
UINT _ux_dcd_stm32_initialize_complete(VOID)
{
UX_SLAVE_DCD *dcd;
UX_DCD_STM32 *dcd_stm32;
UX_SLAVE_DEVICE *device;
UCHAR *device_framework;
UX_SLAVE_TRANSFER *transfer_request;
/* Get the pointer to the DCD. */
dcd = &_ux_system_slave -> ux_system_slave_dcd;
/* Get the pointer to the STM32 DCD. */
dcd_stm32 = (UX_DCD_STM32 *) dcd -> ux_slave_dcd_controller_hardware;
/* Get the pointer to the device. */
device = &_ux_system_slave -> ux_system_slave_device;
/* Are we in DFU mode ? If so, check if we are in a Reset mode. */
if (_ux_system_slave -> ux_system_slave_device_dfu_state_machine == UX_SYSTEM_DFU_STATE_APP_DETACH)
{
/* The device is now in DFU reset mode. Switch to the DFU device framework. */
_ux_system_slave -> ux_system_slave_device_framework = _ux_system_slave -> ux_system_slave_dfu_framework;
_ux_system_slave -> ux_system_slave_device_framework_length = _ux_system_slave -> ux_system_slave_dfu_framework_length;
}
else
{
/* Set State to App Idle. */
_ux_system_slave -> ux_system_slave_device_dfu_state_machine = UX_SYSTEM_DFU_STATE_APP_IDLE;
/* Check the speed and set the correct descriptor. */
if (_ux_system_slave -> ux_system_slave_speed == UX_FULL_SPEED_DEVICE)
{
/* The device is operating at full speed. */
_ux_system_slave -> ux_system_slave_device_framework = _ux_system_slave -> ux_system_slave_device_framework_full_speed;
_ux_system_slave -> ux_system_slave_device_framework_length = _ux_system_slave -> ux_system_slave_device_framework_length_full_speed;
}
else
{
/* The device is operating at high speed. */
_ux_system_slave -> ux_system_slave_device_framework = _ux_system_slave -> ux_system_slave_device_framework_high_speed;
_ux_system_slave -> ux_system_slave_device_framework_length = _ux_system_slave -> ux_system_slave_device_framework_length_high_speed;
}
}
/* Get the device framework pointer. */
device_framework = _ux_system_slave -> ux_system_slave_device_framework;
/* And create the decompressed device descriptor structure. */
_ux_utility_descriptor_parse(device_framework,
_ux_system_device_descriptor_structure,
UX_DEVICE_DESCRIPTOR_ENTRIES,
(UCHAR *) &device -> ux_slave_device_descriptor);
/* Now we create a transfer request to accept the first SETUP packet
and get the ball running. First get the address of the endpoint
transfer request container. */
transfer_request = &device -> ux_slave_device_control_endpoint.ux_slave_endpoint_transfer_request;
/* Set the timeout to be for Control Endpoint. */
transfer_request -> ux_slave_transfer_request_timeout = UX_MS_TO_TICK(UX_CONTROL_TRANSFER_TIMEOUT);
/* Adjust the current data pointer as well. */
transfer_request -> ux_slave_transfer_request_current_data_pointer =
transfer_request -> ux_slave_transfer_request_data_pointer;
/* Update the transfer request endpoint pointer with the default endpoint. */
transfer_request -> ux_slave_transfer_request_endpoint = &device -> ux_slave_device_control_endpoint;
/* The control endpoint max packet size needs to be filled manually in its descriptor. */
transfer_request -> ux_slave_transfer_request_endpoint -> ux_slave_endpoint_descriptor.wMaxPacketSize =
device -> ux_slave_device_descriptor.bMaxPacketSize0;
/* On the control endpoint, always expect the maximum. */
transfer_request -> ux_slave_transfer_request_requested_length =
device -> ux_slave_device_descriptor.bMaxPacketSize0;
/* Attach the control endpoint to the transfer request. */
transfer_request -> ux_slave_transfer_request_endpoint = &device -> ux_slave_device_control_endpoint;
/* Create the default control endpoint attached to the device.
Once this endpoint is enabled, the host can then send a setup packet
The device controller will receive it and will call the setup function
module. */
dcd -> ux_slave_dcd_function(dcd, UX_DCD_CREATE_ENDPOINT,
(VOID *) &device -> ux_slave_device_control_endpoint);
/* Open Control OUT endpoint. */
HAL_PCD_EP_Flush(dcd_stm32 -> pcd_handle, 0x00U);
HAL_PCD_EP_Open(dcd_stm32 -> pcd_handle, 0x00U, device -> ux_slave_device_descriptor.bMaxPacketSize0, UX_CONTROL_ENDPOINT);
/* Open Control IN endpoint. */
HAL_PCD_EP_Flush(dcd_stm32 -> pcd_handle, 0x80U);
HAL_PCD_EP_Open(dcd_stm32 -> pcd_handle, 0x80U, device -> ux_slave_device_descriptor.bMaxPacketSize0, UX_CONTROL_ENDPOINT);
/* Ensure the control endpoint is properly reset. */
device -> ux_slave_device_control_endpoint.ux_slave_endpoint_state = UX_ENDPOINT_RESET;
/* Mark the phase as SETUP. */
transfer_request -> ux_slave_transfer_request_type = UX_TRANSFER_PHASE_SETUP;
/* Mark this transfer request as pending. */
transfer_request -> ux_slave_transfer_request_status = UX_TRANSFER_STATUS_PENDING;
/* Ask for 8 bytes of the SETUP packet. */
transfer_request -> ux_slave_transfer_request_requested_length = UX_SETUP_SIZE;
transfer_request -> ux_slave_transfer_request_in_transfer_length = UX_SETUP_SIZE;
/* Reset the number of bytes sent/received. */
transfer_request -> ux_slave_transfer_request_actual_length = 0;
/* Check the status change callback. */
if(_ux_system_slave -> ux_system_slave_change_function != UX_NULL)
{
/* Inform the application if a callback function was programmed. */
_ux_system_slave -> ux_system_slave_change_function(UX_DEVICE_ATTACHED);
}
/* If trace is enabled, insert this event into the trace buffer. */
UX_TRACE_IN_LINE_INSERT(UX_TRACE_DEVICE_STACK_CONNECT, 0, 0, 0, 0, UX_TRACE_DEVICE_STACK_EVENTS, 0, 0)
/* If trace is enabled, register this object. */
UX_TRACE_OBJECT_REGISTER(UX_TRACE_DEVICE_OBJECT_TYPE_DEVICE, device, 0, 0, 0)
/* We are now ready for the USB device to accept the first packet when connected. */
return(UX_SUCCESS);
}
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