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153 lines
3.8 KiB
153 lines
3.8 KiB
//
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// The main VFS state machine, mostly based on DAPLink
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//
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// TODO many errors were originally written to a FAIL.TXT file for the user to see,
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// those are now caught by assert_param(0) and crash the whole system. This is not ideal.
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//
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/**
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* @file vfs_manager.h
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* @brief Methods that build and manipulate a virtual file system
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*
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* DAPLink Interface Firmware
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* Copyright (c) 2009-2016, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef VFS_MANAGER_USER_H
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#define VFS_MANAGER_USER_H
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#include "platform.h"
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#include "virtual_fs.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Flag that we're plugged into Windows.
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* This is detected by characteristic writes of some system metadata store (which we discard)
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*/
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extern bool vfs_is_windows;
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/* Callable from anywhere */
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/** Enable or disable the virtual filesystem */
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void vfs_mngr_fs_enable(bool enabled);
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/**
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* Remount the virtual filesystem
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*
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* @param force_full - use media ready toggle instead of just notifying of modified data
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* (this should be more reliable, but can also be more intrusive)
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*/
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void vfs_mngr_fs_remount(bool force_full);
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/* Callable only from the thread running the virtual fs */
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/**
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* Initialize the VFS manager
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* Must be called after USB has been initialized (usbd_init())
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*
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* @note Must only be called from the thread runnning USB
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* @param enabled
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*/
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void vfs_mngr_init(bool enabled);
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/**
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* Run the vfs manager state machine
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*
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* @note Must only be called from the thread runnning USB
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* @param elapsed_ms
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*/
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void vfs_mngr_periodic(uint32_t elapsed_ms);
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/**
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* Return the status of the last transfer or E_SUCCESS
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* if none have been performed yet
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*
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* @return success
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*/
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error_t vfs_mngr_get_transfer_status(void);
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/* Use functions */
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/**
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* Build the filesystem by calling vfs_init and then adding files with vfs_create_file
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*/
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void vfs_user_build_filesystem(void);
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/**
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* Called when a file on the filesystem changes
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*
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* @param filename - name of the changed file
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* @param change - type of change
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* @param file - data pointer (?)
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* @param new_file_data - new data pointer (?)
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*/
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void vfs_user_file_change_handler(const vfs_filename_t filename,
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vfs_file_change_t change,
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vfs_file_t file, vfs_file_t new_file_data);
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/**
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* Called when VFS is disconnecting
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*/
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void vfs_user_disconnecting(void);
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// --- interface ---
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/**
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* Initialize, call form the MSC init callback
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*/
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void vfs_if_usbd_msc_init(void);
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/**
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* MSC wants to read a sector
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*
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* @param sector - first sector number
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* @param buf - destination
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* @param num_of_sectors - length
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*/
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void vfs_if_usbd_msc_read_sect(uint32_t sector, uint8_t *buf, uint32_t num_of_sectors);
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/**
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* MSC wants to write a sector
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*
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* @param sector - first sector number
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* @param buf - data
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* @param num_of_sectors - length
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*/
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void vfs_if_usbd_msc_write_sect(uint32_t sector, const uint8_t *buf, uint32_t num_of_sectors);
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typedef struct {
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uint32_t MemorySize;
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uint16_t BlockSize;
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uint32_t BlockGroup; // LUN
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uint32_t BlockCount;
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bool MediaReady;
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bool MediaChanged;
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} vfs_info_t;
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/** VFS info struct - some are used by SCSI/MSC */
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extern volatile vfs_info_t vfs_info;
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#ifdef __cplusplus
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}
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#endif
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#endif// VFS_MANAGER_USER_H
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