Pass-thru tooling for J2534 devices

A small C library and CLI that talks to SAE J2534-1 / J2534-2 interfaces on Linux and Windows. Read DTCs, stream CAN, flash ECU/TCU calibrations — without vendor software.

$ j2534 devices
0: Tactrix OpenPort 2.0  (fw 1.17)
1: Drew Tech MongoosePro (fw 2.4)

$ j2534 --dev 0 dtc read --proto ISO15765
P0710  Transmission fluid temperature sensor circuit
P0741  Torque converter clutch circuit performance

Features

• ISO15765, ISO9141, J1850 PWM/VPW, CAN raw
• Periodic messages, filters, flow-control pass-through
• Calibration read/write with block checksums
• CSV and pcapng logging

Status: 0.7 beta. API frozen for 1.0 — see releases.