Ashin Walpola
d2fd222a62
obu-firmware is now a port of the colleague's standalone VRU station (microbu-esp32c5/firmware, kept beside this repository and gitignored): the vanetza-idf C-ITS stack with the TS 103 097 security entity, credentials in NVS, the station-link v1 protocol over the native USB port (frame type 0x10 in the existing 0xAA55 framing) and over a BLE GATT peripheral, and its ITS-G5 radio adapter. The phone still builds CAM and VAM; the board adds GeoNetworking/BTP and signs with the provisioned authorization ticket. The private key never leaves the board. Builds with ESP-IDF 6.0.2 only, which vanetza-idf pins for the radio's private driver ABI. The previous C firmware stays on disk unbuilt; a full-flash backup of the bench board is kept in firmware-backups/ (gitignored). Changed against the colleague's firmware, marked MicrOBU: in the sources: - Reception unchanged for the app. vanetza-idf drops what it cannot verify (unsigned traffic, every RSU), so each captured frame also goes through the previous gn_unwrap.c and reaches the phone as link opcode V2X_RX (0x85), whose body is the old SERIAL_MSG_V2X_RX payload. - Unsigned transmission still possible, with the previous geonet.c header; the phone chooses per message. - Console on UART0 (CH343 port); the native USB port carries only link frames. - BLE advertising pauses while the USB link is in use: BLE and ITS-G5 share one RF front end. - NVS 80 KB (app at 0x20000). At 24 KB, with Wi-Fi settings the previous firmware left behind, the BLE bond could not be stored and the phone had to pair on every connection. - Bench fixes: the radio queue is drained before the first PoTi (no RX and ~177 queue drops before); the station loop waited pdMS_TO_TICKS(5) = 0 ticks at 100 Hz and starved the idle task; the 2.4 KB RX capture buffer is off the Wi-Fi task stack; BLE notifications longer than the MTU are dropped instead of cut short, MTU 517; serial writes are skipped with no USB host. - Manual country policy and TX-power read-back from the previous radio setup; logs for BLE encryption changes and the number of stored bonds. Verified on the bench board (COM3) with the phone over USB and BLE: CAM and VAM, signed and unsigned, go out; reception of the sim car and the RSU's CAM/SPATEM/MAPEM continues; the board survives app restarts and reconnects. See docs/06-signed-its-vam-ble.md.
62 lines
2.1 KiB
Plaintext
62 lines
2.1 KiB
Plaintext
*.iml
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.gradle/
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/local.properties
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/.idea/caches
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/.idea/libraries
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/.idea/modules.xml
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/.idea/workspace.xml
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/.idea/navEditor.xml
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/.idea/assetWizardSettings.xml
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.DS_Store
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build/
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captures/
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.externalNativeBuild
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.cxx
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local.properties
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*.hprof
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*.jks
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*.keystore
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secrets.properties
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# --- local IDE state, not project configuration -------------------------------
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# Which device you last deployed to, your emulator list, and Studio's assistant
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# settings are per-machine. deploymentTargetSelector.xml in particular rewrites
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# itself on every run, so tracking it means a dirty tree after every deploy.
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/.idea/deploymentTargetSelector.xml
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/.idea/deviceManager.xml
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/.idea/appInsightsSettings.xml
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/.idea/studiobot.xml
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# Python bytecode caches, e.g. from importing obu-firmware/test/host/check_replay.py.
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__pycache__/
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# ESP-IDF rewrites sdkconfig on every build and keeps the previous one here.
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# sdkconfig.defaults is the real, intentional configuration; these two are output.
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sdkconfig.old
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# Claude Code local settings (permissions, per-machine). The skills alongside it
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# are project knowledge and may be committed deliberately.
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.claude/settings.local.json
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# Third-party working copies kept beside the project, not part of it. The ASN.1
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# modules this project actually needs are vendored under asn1/ instead.
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/C-ITS-Parser/
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/vanetza/
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# Office lock files. Word/Excel create these beside a document while it is open
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# and remove them on close, so they are transient and machine-local.
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~$*
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# Colleague's standalone ESP32-C5 VRU station (signed ITS via Vanetza). It is its
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# own git repository with its own history; kept beside the project as a reference
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# for porting the signed-TX path into obu-firmware, not tracked here.
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/microbu-esp32c5/
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# Full-flash images read back off the bench boards before reflashing them (16 MB each).
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# Restore with: esptool --chip esp32c5 -p COM<N> write-flash 0 <image>
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/firmware-backups/
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# ESP-IDF component manager downloads (espressif/esp-boost for obu-firmware's vanetza-idf), ~125 MB.
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# dependencies.lock beside the project pins them and is committed; this is its cache.
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managed_components/
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