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116 lines
3.6 KiB
116 lines
3.6 KiB
//
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// Here are defined the files and handlers
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//
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/**
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* @file vfs_user.c
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* @brief Implementation of vfs_user.h
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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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#include "platform.h"
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#include "utils/ini_writer.h"
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#include "framework/settings.h"
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#include "vfs_manager.h"
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#include "str_utils.h"
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const vfs_filename_t daplink_drive_name = VFS_DRIVE_NAME;
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static uint32_t read_iw_sector(uint32_t sector_offset, uint8_t *data, uint32_t num_sectors, void (*handler)(IniWriter *))
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{
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const uint32_t avail = num_sectors*VFS_SECTOR_SIZE;
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const uint32_t skip = sector_offset*VFS_SECTOR_SIZE;
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IniWriter iw = iw_init((char *)data, skip, avail);
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iw_begin();
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handler(&iw);
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iw_end();
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return avail - iw.count;
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}
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// File callback to be used with vfs_add_file to return file contents
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static uint32_t read_file_units_ini(uint32_t sector_offset, uint8_t *data, uint32_t num_sectors)
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{
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vfs_printf("Read UNITS.INI");
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return read_iw_sector(sector_offset, data, num_sectors, settings_build_units_ini);
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}
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static uint32_t read_file_system_ini(uint32_t sector_offset, uint8_t *data, uint32_t num_sectors)
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{
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vfs_printf("Read SYSTEM.INI");
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return read_iw_sector(sector_offset, data, num_sectors, settings_build_system_ini);
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}
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static uint32_t read_file_pinout_txt(uint32_t sector_offset, uint8_t *data, uint32_t num_sectors)
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{
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vfs_printf("Read PINOUT.TXT");
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return read_iw_sector(sector_offset, data, num_sectors, settings_build_pinout_txt);
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}
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void vfs_user_build_filesystem(void)
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{
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vfs_printf("Rebuilding VFS...");
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// Setup the filesystem based on target parameters
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vfs_init(daplink_drive_name, 0/*unused "disk size"*/);
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vfs_create_file("UNITS INI", read_file_units_ini, NULL, iw_measure_total(settings_build_units_ini, 0));
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vfs_create_file("SYSTEM INI", read_file_system_ini, NULL, iw_measure_total(settings_build_system_ini, 0));
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vfs_create_file("PINOUT TXT", read_file_pinout_txt, NULL, iw_measure_total(settings_build_pinout_txt, 0));
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}
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// Callback to handle changes to the root directory. Should be used with vfs_set_file_change_callback
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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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// Check for "System Volume Information"
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if (strstarts(filename, "SYSTEM~1")) {
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vfs_printf("ATTN! Windows host detected.");
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// TODO take precautions if needed
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vfs_is_windows = true;
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return;
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}
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if (VFS_FILE_CHANGED == change) {
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// Unused
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vfs_printf(">>> CHANGED %s", filename);
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}
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if (VFS_FILE_CREATED == change) {
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// do something based on the filename here
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vfs_printf(">>> CREATED %s", filename);
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}
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if (VFS_FILE_DELETED == change) {
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//
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vfs_printf(">>> DELETED %s", filename);
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}
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}
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void vfs_user_disconnecting(void)
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{
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// maybe reset...
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vfs_printf("vfs_user_disconnecting");
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}
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