SAE J1939 Programming with Arduino – Debugging Macros

This post is part of a series about SAE J1939 ECU Programming & Vehicle Bus Simulation with Arduino.

Please be aware that the following macros are one-liners. Due to the limited page space, some macros appear as wrapped into more than one line and the line breaks are indicated with “\”.

SAE J1939 has become the accepted industry standard and the vehicle network technology of choice for off-highway machines in applications such as construction, material handling, and forestry machines. J1939 is a higher-layer protocol based on Controller Area Network (CAN). It provides serial data communications between microprocessor systems (also called Electronic Control Units - ECU) in any kind of heavy duty vehicles. The messages exchanged between these units can be data such as vehicle road speed, torque control message from the transmission to the engine, oil temperature, and many more.

A Comprehensible Guide to J1939 is the first work on J1939 besides the SAE J1939 standards collection. It provides profound information on the J1939 message format and network management combined with a high level of readability.

Read more...