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CAN bitrate measured: 500 kbps; can_pcan comes up listen-only

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In the car with ignition on, the listen-only probe found 500 kbps (2673
frames in 3 s, zero RX errors; nothing at other rates). The OBD port
isn't gatewayed: 27 periodic IDs, ~893 frames/s. A udev rule now starts
can-up@can_pcan on boot and hot-plug with 500k and listen-only, to be
dropped when obd-poller becomes the single writer.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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mikkeli
2026-10-09 16:38:44 +09:00
parent e659efc3c0
commit ba9fefb5d2
2 changed files with 20 additions and 2 deletions
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docs/BOM.md
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@@ -12,7 +12,7 @@ type: reference
| **USB ID** | `0c72:000c` |
| **Purpose** | USB-to-CAN adapter for reading car CAN bus traffic |
| **Interface** | SocketCAN netdev |
| **Default bitrate** | 500 kbps |
| **Bitrate** | 500 kbps, measured on the Z27AG OBD port (listen-only by default; see [CAN bitrate plan](impl/plans/CAN-BITRATE.md)) |
| **Driver** | PEAK proprietary driver 9.2.0 (netdev build) — out-of-tree module, must be rebuilt after kernel updates |
### Notes