Data Logging
Library.DataLogging · r1.14 · · markolson
Data logging refers to recording the conditions of a running engine. It normally happens using serial communication with the ECU
There are two way for Data Logging:
1. Data Logging through stock DLC Data Link Connector. For more information, see DLC communication
2. Data Logging using ECUs inside serial connector (CN2/CN3) with a modified serial handler of ECU code
For more information on the serial port of an OBD1 ECU, see OBD1 CN2.
For more information on OBD0 ECU serial ports, see OBD0 CN3
Stock OBD1 and OBD0 ECUs have datalogging capability built-in as part of the standard on-board diagnostics OBD. However, the serial port operates at a baudrate which is not standard for PC serial ports. I can't remember offhand what baudrate it actually is, and PCs may be capable of using it, but most of us who do OBD1 datalogging use code based off of Doc's original datalogging code (which contained a bug).
Below are several programs members have written for datalogging with ROMs using doc's modified serial handler.
- ECUControl - The original PGMFI datalogging software, now expanded to cover both OBD0 & OBD1 on Windows (by Nicolas Mailloux), Palm OS (by Frederic Maheu) , and soon Pocket PC.
- Cuddle - John Cui's OBD1 datalogging and RTP control software.
- Turbo Edit - Jason Parker's OBD0 datalogging and off-line auto-tuning software.