obu-firmware builds against vanetza-idf from microbu-esp32c5/external, but that tree was gitignored, so a clone of this repository could not build the firmware it ships. It is now committed here as ordinary files in its own folder, microbu-esp32c5/: the colleague's commit cf4b99f plus the V2X2MAP bridge's signature verification (--trust) used on the bench. Nothing is fetched from or pushed to the colleague's repository; this repository and its remotes carry everything. The folder's own .gitignore keeps build output, downloaded components and private key material out, as it did there; the committed file set is identical to that repository's tracked files. The ESP32-C5 is still flashed from obu-firmware/, which only takes vanetza-idf from microbu-esp32c5/, so the two stay separate folders. FLASHING.md says how to take a newer version of the colleague's tree (copy it over the folder, rebuild, test, commit).
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Vanetza Upstream Provenance
This directory (external/vanetza-idf) contains the Vanetza protocol stack and its ESP-IDF integration for the micrOBU ESP32-C5 ITS-S station.
Upstream Software Basis
- Project: Vanetza (ETSI C-ITS protocol stack implementation in C++17)
- Upstream Repository:
https://github.com/riebl/vanetza.git - Pinned Upstream Revision:
a7cacc1879f3e2124dfb8ef2d83886b1e82d3b36 - Author / Upstream Maintainer: Raphael Riebl et al.
- Citekey:
rieblRieblVanetza2026 - License: BSD-3-Clause (retained in
LICENSE.md)
Integrated Components & Third-Party Dependencies
-
Boost C++ Libraries (v1.87.0):
- Located in
ports/esp_idf/third_party/(circular_buffer,geometry,heap,iostreams,multiprecision,rational). - License: Boost Software License 1.0 (
BSL-1.0).
- Located in
-
OpenTrafficMap (OTM) Transmitter:
- Upstream:
https://codeberg.org/opentrafficmap/its-g5-receiver-firmware_txenabled.git - Reviewed Revision:
674e34128279235ba34c9f8d778f43cf1d075397 - Core file:
ports/esp_idf/third_party/otm/main/tx_custom.c(guarded by SHA-256 infirmware/CMakeLists.txt).
- Upstream:
-
ESP-IDF Port (
ports/esp_idf):- Implements hardware-accelerated crypto (mbedTLS ECC/ECDSA/SHA), NVS credential persistence, ESP32-C5 802.11p PHY bindings (
radio_c5.cmake), and localhost PKI verification tooling (ports/esp_idf/tools/local_pki.py,pki_client.py).
- Implements hardware-accelerated crypto (mbedTLS ECC/ECDSA/SHA), NVS credential persistence, ESP32-C5 802.11p PHY bindings (