VT ALDL to OBD2
Posted: Fri Dec 18, 2015 7:52 pm
I'm new to this forum. I'm a retired component level electronic technician with many years experience in SCADA (Supervisory Control and Data Acquisition). In the SCADA field I did protocol analysis programing and troubleshooting.
My 1990 Buick Reatta has a very nice digital Instrument Cluster and digital Driver's Information Center (this in a complete OBD error code reader with the capability of testing various engine components and inserting values in tables), but only 165 HP and a non-electronic controlled transmission. I have obtained a salvage 2006 Chevrolet Impala SS with a 5.3 liter V8 and an electronic controlled transmission. I need to make the different control systems talk to each other.
I understand the possibly VT version ALDL runs at 8.192K using 2's complement parity, while the OBD2 system operates at 10.4K with CRC error correction and Asynchronous collision detection.
Is it possible to make a network bridge between the two systems using a single microcontroller, or a dual microcontroller? Something along the line of a bi-directional store, convert, and forward modem.
My 1990 Buick Reatta has a very nice digital Instrument Cluster and digital Driver's Information Center (this in a complete OBD error code reader with the capability of testing various engine components and inserting values in tables), but only 165 HP and a non-electronic controlled transmission. I have obtained a salvage 2006 Chevrolet Impala SS with a 5.3 liter V8 and an electronic controlled transmission. I need to make the different control systems talk to each other.
I understand the possibly VT version ALDL runs at 8.192K using 2's complement parity, while the OBD2 system operates at 10.4K with CRC error correction and Asynchronous collision detection.
Is it possible to make a network bridge between the two systems using a single microcontroller, or a dual microcontroller? Something along the line of a bi-directional store, convert, and forward modem.