CAN Bus Skill

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CAN/CAN-FD bus analysis and development expertise

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Details

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CAN Bus SkillStart free

What this skill tells your AI

The instructions your AI receives, as published by a5c-ai/babysitter in library/specializations/embedded-systems/skills/can-bus/SKILL.md and read by Ahel’s review.

Overview

This skill provides comprehensive CAN and CAN-FD bus analysis, development, and debugging capabilities for automotive and industrial embedded systems.

Capabilities

Message Frame Operations

CAN message frame generation
Frame analysis and decoding
Identifier filtering and masking
Standard (11-bit) and extended (29-bit) IDs
Remote frame handling

DBC File Support

DBC file parsing and generation
Signal decoding and encoding
Message definition management
Physical value scaling
Multiplexed signal support

Protocol Support

CAN 2.0A/B compliance
CAN-FD configuration and validation
J1939 transport protocol
CANopen communication
UDS (ISO 14229) diagnostics
ISO-TP (ISO 15765-2)

Bus Analysis

Bus arbitration analysis
Error frame detection and analysis
Bus-off recovery monitoring
Bus load calculation
Bit timing verification
Network topology analysis

Gateway Operations

Message routing configuration
Gateway bridge setup
Protocol translation
Filtering and forwarding rules

Target Processes

device-driver-development.js - CAN driver implementation
signal-integrity-testing.js - CAN bus signal validation
hw-sw-interface-specification.js - CAN interface definition
functional-safety-certification.js - CAN safety requirements

Dependencies

CAN interface tools (PEAK, Vector, Kvaser)
DBC files for signal decoding
CAN analyzer hardware
SocketCAN (Linux)

Usage Context

This skill is invoked when tasks require:

CAN driver development
Bus communication debugging
DBC-based signal analysis
Protocol stack implementation
Automotive networking

Configuration Examples

CAN Bit Timing

can:
  bitrate: 500000  # 500 kbps
  sample_point: 87.5
  sjw: 1
  seg1: 13
  seg2: 2
  prescaler: 4

CAN-FD Configuration

can_fd:
  nominal_bitrate: 500000
  data_bitrate: 2000000
  brs: enabled  # Bit Rate Switch
  esi: enabled  # Error State Indicator

DBC Signal Definition

BO_ 0x123 EngineData: 8 ECU
 SG_ EngineRPM : 0|16@1+ (0.25,0) [0|16383.75] "rpm" Vector__XXX
 SG_ EngineTemp : 16|8@1+ (1,-40) [-40|215] "C" Vector__XXX

Signals

GitHub stars: 2k
Forks: 113
Last commit: Sep 2026

Advanced

Item type: skill
Key: can-bus
Source: github.com/a5c-ai/babysitter

github.com/a5c-ai/babysitter