Mathieu MoranandCopilot
c03cd6d48d
Counterfeit ELM327 chips (common in cheap PL2303 USB adapters) often report bad/zero voltage even when the OBD connection is working. python-obd's check_voltage=True default rejects these. Add OBD_SKIP_VOLTAGE_CHECK=1 env var to pass check_voltage=False to obd.OBD(), documented in yaris-obd.service. Also document Phase 24.6 Yaris 2013 compatibility analysis in PLAN.md. Co-authored-by: Copilot <[email protected]>
35 lines
1.4 KiB
Desktop File
35 lines
1.4 KiB
Desktop File
[Unit]
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Description=Yaris OBD/GPS tracker web UI
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After=network-online.target
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Wants=network-online.target
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[Service]
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Type=simple
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User=yaris
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Group=yaris
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WorkingDirectory=/home/yaris/app/yaris-obd
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# Unbuffered stdout so print() diagnostics (GPS/GNSS status, etc.) actually reach
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# the log file promptly instead of sitting in Python's stdout buffer indefinitely
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# when it's redirected to a file instead of a TTY.
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Environment=PYTHONUNBUFFERED=1
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# Once OBD is confirmed working on this car, pin the protocol to skip the
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# 3-5s auto-detect probe on every ignition-on: e.g. OBD_PROTOCOL=6 for
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# ISO 15765-4 CAN 11-bit 500kbps (correct for 2013 Toyota Yaris).
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# Leave unset during initial setup so auto-detect can find the right value.
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#Environment=OBD_PROTOCOL=6
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# If the cheap ELM327 adapter reports bad voltage and fails to connect,
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# set this to 1 to skip the voltage check (common with counterfeit ELM chips).
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#Environment=OBD_SKIP_VOLTAGE_CHECK=1
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ExecStart=/home/yaris/app/yaris-obd/venv/bin/python app.py
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Restart=on-failure
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RestartSec=5
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# Give the app a few seconds after boot for USB/serial devices to enumerate
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# before the first connection attempt - it retries gracefully either way,
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# but this avoids needless noisy "no connection" logs on every cold boot.
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ExecStartPre=/bin/sleep 5
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StandardOutput=append:/home/yaris/app/yaris-obd/yaris-obd.log
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StandardError=append:/home/yaris/app/yaris-obd/yaris-obd.log
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[Install]
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WantedBy=multi-user.target
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