François
86236d744d
DESIGN.md: Pin now carries a PinSpec (function/direction/pad/source); expected_signal_type() is a derived accessor; pin_role() returns a PinSpec. README.md: dedicated Dependencies section with libzip/pugixml install commands for Debian/Ubuntu, Arch and Fedora. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
92 lines
2.9 KiB
Markdown
92 lines
2.9 KiB
Markdown
# essim — system digital twin
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Interactive simulator for the inter-card connections inside a system. Built
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around a domain model of **modules → parts → pins / signals → connections**,
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with importers for Mentor Graphics, Altium and ODS pinout sheets, a TUI shell
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with scripting, snapshots and BFS net analysis.
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Status: early work-in-progress.
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## Quick start
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```sh
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cmake -S . -B build
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cmake --build build -j
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./build/essim
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```
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Inside the shell, type `help` for the live command list — or read the
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auto-generated reference at [`doc/user/commands.md`](doc/user/commands.md).
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A worked bring-up script is at [`test/system.essim`](test/system.essim);
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load it with `source test/system.essim`.
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## Dependencies
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- **C++17 compiler** and **CMake 3.14+**.
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- System libraries **libzip** and **pugixml** — install the *development*
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packages:
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- Debian/Ubuntu — `sudo apt install libzip-dev libpugixml-dev`
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- Arch — `sudo pacman -S libzip pugixml`
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- Fedora — `sudo dnf install libzip-devel pugixml-devel`
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- Fetched automatically at configure time via `FetchContent` (nothing to
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install): **FTXUI** v6.1.9 and **doctest** v2.4.11.
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- Optional, only for the `doc` target: **doxygen** and **python3**.
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## Tests
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```sh
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./build/essim_tests
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# or
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ctest --test-dir build
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```
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Skip building tests entirely:
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```sh
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cmake -S . -B build -DBUILD_TESTING=OFF
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```
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## Documentation
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- [`doc/user/`](doc/user/) — user guide, command reference, scripting.
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- [`doc/api/`](doc/api/) — auto-generated C++ API reference.
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- [`DESIGN.md`](DESIGN.md) — implementation notes (domain conventions, TUI
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internals, gotchas).
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- [`doc/README.md`](doc/README.md) — how the doc pipeline is wired.
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Regenerate auto-generated parts after substantive code changes:
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```sh
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cmake --build build --target doc # needs doxygen + python3
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```
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## Project layout
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```
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src/system/ domain model (Module/Part/Pin/Signal, Connection, Transform, …)
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src/imports/ Mentor / Altium / ODS netlist importers
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src/tui/ FTXUI shell (commands, screens, completion, history)
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tests/ doctest suite
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doc/ api/ + user/ Markdown trees, Doxyfile.in, gen_api_md.py
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test/ sample netlists + system.essim bring-up script
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```
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Full layout & rationale in [`DESIGN.md`](DESIGN.md).
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## Licence
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Copyright (c) 2026 François Dausseur
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Licensed under the **European Union Public Licence (EUPL), Version 1.2** —
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the "Licence". You may not use this work except in compliance with the
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Licence. You may obtain a copy of the Licence in the [`LICENSE`](LICENSE)
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file or at <https://joinup.ec.europa.eu/software/page/eupl>.
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Unless required by applicable law or agreed to in writing, software
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distributed under the Licence is distributed on an "AS IS" basis,
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**WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND**, either express or
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implied. See the Licence for the specific language governing permissions
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and limitations under the Licence.
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SPDX-License-Identifier: EUPL-1.2
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