Ashin Walpola
d107534eb2
obu-firmware builds against the vanetza-idf C-ITS library, which until now came from the colleague's microbu-esp32c5 tree beside the repository and was not tracked here, so a clone of this repository could not build the firmware it ships. The library alone is now part of obu-firmware, as obu-firmware/external/vanetza-idf: their external/vanetza-idf at commit cf4b99f, unchanged (9775 files; see its PROVENANCE.md). CMake takes it from there by default; -DVANETZA_IDF_DIR still points the build elsewhere. The rest of the colleague's tree (their own VAM firmware, PKI tooling, station-link Python tools, the V2X2MAP bridge) stays out of this repository and gitignored; nothing is pushed to their repository. NOTES.md, docs/06, TODO.md and the pcap verifier's usage line point at the new location.
65 lines
3.9 KiB
CMake
65 lines
3.9 KiB
CMake
cmake_minimum_required(VERSION 3.22)
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# obu-firmware: the ESP32-C5 half of the MicrOBU station, on the vanetza-idf C-ITS stack.
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#
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# Since 2026-09-23 this is a port of the colleague's standalone VRU station
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# (microbu-esp32c5/firmware, in their own repository, not part of this one). From it:
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# BTP/GeoNetworking and the TS 103 097 security entity (vanetza-idf), the station-link message
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# layer over native USB Serial/JTAG and BLE GATT, the NVS credential store, and the C5 radio adapter.
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# Added here for this project: the raw receive path of the previous firmware (gn_unwrap.c, forwarded
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# as link opcode V2X_RX) so unsigned and non-demo-signed traffic still reaches the phone, the
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# unsigned transmit path of the previous firmware (geonet.c), and BLE pausing while USB is in use.
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# See NOTES.md.
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#
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# ESP-IDF 6.0.2 exactly: the C5 radio's private Wi-Fi driver ABI (otm_tx_custom.c) is pinned to it
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# by vanetza-idf's radio_c5.cmake and has only been validated there. The previous C firmware was
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# built with IDF 6.1; see FLASHING.md for the export script of each.
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#
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# vanetza-idf lives in external/vanetza-idf, copied from the colleague's repository (their
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# external/vanetza-idf at commit cf4b99f, unchanged; see its PROVENANCE.md). Override with
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# -DVANETZA_IDF_DIR=... to build against another checkout.
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if(NOT VANETZA_IDF_DIR)
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set(VANETZA_IDF_DIR "${CMAKE_CURRENT_LIST_DIR}/external/vanetza-idf")
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endif()
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if(NOT EXISTS "${VANETZA_IDF_DIR}/idf_component.yml")
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message(FATAL_ERROR "vanetza-idf not found at ${VANETZA_IDF_DIR}: obu-firmware/external/vanetza-idf "
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"is part of this repository; check it is complete, or pass "
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"-DVANETZA_IDF_DIR=<path to a vanetza-idf checkout>")
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endif()
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# Provenance guard for main/otm_tx_custom.c, copied unchanged from microbu-esp32c5/firmware/CMakeLists.txt:
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# this checked-in copy is what microbu::C5Radio::request() links against for every transmission.
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# Fail configure if either the pinned upstream or this file drifts from the reviewed revision.
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set(_otm_upstream "${VANETZA_IDF_DIR}/ports/esp_idf/third_party/otm/main/tx_custom.c")
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if(EXISTS "${_otm_upstream}")
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file(READ "${_otm_upstream}" _otm_upstream_text)
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string(REPLACE "\r\n" "\n" _otm_upstream_text "${_otm_upstream_text}")
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string(SHA256 _otm_upstream_hash "${_otm_upstream_text}")
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if(NOT _otm_upstream_hash STREQUAL "cb1dccfef96912ca59275e8a9102f41f56925b94a19d4a4629082aaeb779be1b")
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message(FATAL_ERROR "OpenTrafficMap upstream tx_custom.c differs from the reviewed source revision (674e3412) -- review before updating main/otm_tx_custom.c and this hash")
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endif()
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endif()
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set(_otm_checked_in "${CMAKE_CURRENT_LIST_DIR}/main/otm_tx_custom.c")
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file(READ "${_otm_checked_in}" _otm_checked_in_text)
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string(REPLACE "\r\n" "\n" _otm_checked_in_text "${_otm_checked_in_text}")
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string(SHA256 _otm_checked_in_hash "${_otm_checked_in_text}")
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if(NOT _otm_checked_in_hash STREQUAL "114693af99ce3866cfc767066d484e45822eaf15335d94a03626b60ac5777277")
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message(FATAL_ERROR "main/otm_tx_custom.c differs from the reviewed copy -- review the change, then update this hash")
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endif()
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list(APPEND EXTRA_COMPONENT_DIRS "${VANETZA_IDF_DIR}")
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set(SDKCONFIG_DEFAULTS "${CMAKE_CURRENT_LIST_DIR}/sdkconfig.defaults")
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set(COMPONENTS main)
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include($ENV{IDF_PATH}/tools/cmake/project.cmake)
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project(obu_firmware)
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add_compile_options(-Wno-error -Wno-cpp -Wno-error=implicit-function-declaration)
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idf_component_get_property(vanetza_lib vanetza-idf COMPONENT_LIB)
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if(vanetza_lib)
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target_compile_options(${vanetza_lib} PRIVATE -Wno-error=implicit-function-declaration -Wno-error=cpp)
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endif()
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# GCC 15's stricter -Warray-bounds false-positives on NimBLE's fixed-size bond-store arrays
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# (upstream Apache Mynewt code); demote to a warning so the component still builds.
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idf_component_get_property(bt_lib bt COMPONENT_LIB)
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if(bt_lib)
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target_compile_options(${bt_lib} PRIVATE -Wno-error=array-bounds)
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endif()
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