wesandClaude Opus 4.8
742ef49c8a
Command path proven end to end on the bus (node F8 interior lights, on/off/on), each answering a distinct fresh challenge; bare opcodes without the exchange are ignored. ids_can_auth.h verified bit-exact against ids_can_auth.py and the captured/live pairs. - idscan_cmd.py: stdlib socketcan tool running the full page-42/43 exchange - esphome/onecontrol-canbus.yaml: correct IDS-CAN read dispatch (was stale RV-C DGN code) + command path wired to the auth header - README/memory: document the read map + command authentication; rename sniff/ -> captures/; neutral device-integration framing throughout Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
41 lines
1.5 KiB
Bash
Executable File
41 lines
1.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Bring up the CANable at IDS-CAN speed and log timestamped raw frames.
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#
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# Usage:
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# ./log-can.sh # bring up can0 @ 250k, live candump
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# ./log-can.sh rec NAME # also tee a timestamped log to NAME-<date>.log
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# ./log-can.sh watch # cansniffer color-diff view (operate a load, watch bytes)
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# ./log-can.sh down # take the interface down
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#
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# Requires: can-utils (paru -S can-utils on Arch). This CANable shipped with
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# slcan firmware (a /dev/ttyACM* serial device) — bridge it to can0 first with
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# sudo slcand -o -s5 /dev/ttyACMx can0
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# A candleLight/gs_usb reflash would instead give a native socketcan can0 and let
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# the up() path below set the bitrate directly.
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set -euo pipefail
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IFACE="${IFACE:-can0}"
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BITRATE=250000 # IDS-CAN is 250k
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CMD="${1:-up}"
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up() {
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if ! ip link show "$IFACE" &>/dev/null; then
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echo "No $IFACE — is the CANable plugged in? (dmesg | grep -i gs_usb)" >&2
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exit 1
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fi
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sudo ip link set "$IFACE" down 2>/dev/null || true
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sudo ip link set "$IFACE" up type can bitrate "$BITRATE"
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echo "$IFACE up @ ${BITRATE} bps"
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}
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case "$CMD" in
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up) up; exec candump -ta -x "$IFACE" ;;
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rec) up
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name="${2:-onecontrol}"; out="$(dirname "$0")/${name}-$(date +%F_%H%M%S).log"
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echo "logging -> $out (Ctrl-C to stop)"
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exec candump -ta -x "$IFACE" | tee "$out" ;;
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watch) up; exec cansniffer -c "$IFACE" ;;
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down) sudo ip link set "$IFACE" down; echo "$IFACE down" ;;
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*) echo "usage: $0 {up|rec NAME|watch|down}" >&2; exit 2 ;;
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esac
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