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.
32 lines
815 B
C++
32 lines
815 B
C++
#pragma once
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#include <cstdint>
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namespace microbu {
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/// XIAO ESP32-C5 active-low user LED: a visual indicator for TX/RX activity.
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class BoardControls {
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public:
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/// @brief Configures the LED GPIO and sets its idle state.
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BoardControls();
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enum class LedMode {
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normal_tx, // Normally off, pulses on upon frame dissemination
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inverted_rx // Normally on, pulses off upon frame reception
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};
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/// @brief Triggers visual indication (blink on in normal_tx mode, blink off in inverted_rx mode).
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void blink();
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/// @brief Updates LED state and checks indication timers; call periodically.
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void tick();
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private:
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void apply_led_state();
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LedMode mode_ = LedMode::normal_tx;
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bool pulsing_ = false;
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std::int64_t pulse_until_us_ = 0;
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};
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} // namespace microbu
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