CAN Bus Support (Diagnostics/Sniffing) for Klipper & 3D Printers #205
vzagranichnyy
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Please implement CAN bus interaction support (via GPIO/transceivers).
Use Case: This is crucial for diagnosing modern 3D printers (Voron, RatRig, Klipper), which widely use CAN bus for toolhead communication. Currently, troubleshooting connection loss (broken wire vs. MCU crash vs. config error) is difficult without dedicated hardware.
Requirements:
Bitrate support: 250k, 500k, 1M.
Sniffer mode (to verify bus activity).
Basic packet injection (if possible).
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