François
fdf86a2e17
ODS sheets now carry a per-connection meta block (Connection / Transform / Left / Right) above the data; the header row anchors the freeze, the auto-filter range, and the zebra striping. CSV stays a single flat 15-column table whose names match the ODS headers exactly. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
essim — system digital twin
Interactive simulator for the inter-card connections inside a system. Built around a domain model of modules → parts → pins / signals → connections, with importers for Mentor Graphics, Altium and ODS pinout sheets, a TUI shell with scripting, snapshots and BFS net analysis.
Status: early work-in-progress.
Quick start
cmake -S . -B build
cmake --build build -j
./build/essim
Requirements:
- A C++17 compiler.
- CMake 3.14+.
- System packages:
libzipandpugixml(Arch:pacman -S libzip pugixml). - FTXUI (v6.1.9) and doctest (v2.4.11) are fetched at configure time via
FetchContent.
Inside the shell, type help for the live command list — or read the
auto-generated reference at doc/user/commands.md.
A worked bring-up script is at test/system.essim;
load it with source test/system.essim.
Tests
./build/essim_tests
# or
ctest --test-dir build
Skip building tests entirely:
cmake -S . -B build -DBUILD_TESTING=OFF
Documentation
doc/user/— user guide, command reference, scripting.doc/api/— auto-generated C++ API reference.DESIGN.md— implementation notes (domain conventions, TUI internals, gotchas).doc/README.md— how the doc pipeline is wired.
Regenerate auto-generated parts after substantive code changes:
cmake --build build --target doc # needs doxygen + python3
Project layout
src/system/ domain model (Module/Part/Pin/Signal, Connection, Transform, …)
src/imports/ Mentor / Altium / ODS netlist importers
src/tui/ FTXUI shell (commands, screens, completion, history)
tests/ doctest suite
doc/ api/ + user/ Markdown trees, Doxyfile.in, gen_api_md.py
test/ sample netlists + system.essim bring-up script
Full layout & rationale in DESIGN.md.
Licence
Copyright (c) 2026 François Dausseur
Licensed under the European Union Public Licence (EUPL), Version 1.2 —
the "Licence". You may not use this work except in compliance with the
Licence. You may obtain a copy of the Licence in the LICENSE
file or at https://joinup.ec.europa.eu/software/page/eupl.
Unless required by applicable law or agreed to in writing, software distributed under the Licence is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the Licence for the specific language governing permissions and limitations under the Licence.
SPDX-License-Identifier: EUPL-1.2