FlexRay Logic 2 Analyzer

Low-level Saleae Logic 2 analyzer for FlexRay communication elements.

Current Scope

• Decodes FlexRay frames from a single digital input.
• Recognizes wakeup symbols (WUS) and groups consecutive symbols into wakeup patterns (WUP).
• Verifies header CRC and frame CRC for channel A or channel B.
• Exports decoded frames, symbols, and syntax errors as CSV.
• Accepts all valid received TSS widths from 3..15 bits without per-capture tuning.
• Recognizes CAS symbols using a timing window instead of treating every malformed start as a symbol.
• Includes a Logic 2 automation script for regression-checking the reference capture in assets/SP2018_FlexRay.sal.

Analyzer Settings

• Input Channel: captured FlexRay signal.
• Bit Rate (Bits/s): 10 Mbit/s, 5 Mbit/s, or 2.5 Mbit/s.
• CRC Channel: FlexRay channel A or B.
• Sample Point (%): decoder sample point after clock recovery. Default is 62.
• Invert Input: invert the digital signal before decoding.

Build

cmake -S . -B build
cmake --build build

Built analyzer:

build/Analyzers/libFlexRayAnalyzer.so

Decoding Example