Members Page/Hendrik S - VEMS wiki www.vems.hu

I'd like to gather some data from the ECU via a serial connection.

AIM (broadcast format)

Enable in VEMS ECU configuration
See BroadcastDatastreamAim
- GenBoard/UnderDevelopment/FirmwareChanges 1.2.35 fw entry
via 1st serial is easier (also works with old fw, but not available when VemsTune is connected: may or may not be acceptable depending on the application).

5 byte packets, (aligned to 0xA3, although A3 is weirdly not the first byte, see the AIM-serial/RS232 specs)

Triggerframe format is supported

SIPR ("Mas") might not be supported in recent firmwares.
TF(A0) == $7e$a0$bf$38$7e

=> response 0x20 type, and the beginning of the frame are the (appr 76byte) runtime values exactly same as in comm.c and offsets specified in vemstune config/*.ini (vemstune displays all runtime data from these).

Can you provide an example in C?

Sending a TF (send+receive) example in Perl via other channel.