Changes by last author:
Changed:
| I'd like to gather some data from the ECU via a serial connection. It works fine with the broadcast format, but I have trouble with SIPR. |
| I'd like to gather some data from the ECU via a serial connection. |
| You state "On startup the ECU can switch to the SIPR protocol by sending the command 'Mas'." What is this "Mas"? Is this a certain byte? |
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----
AIM (broadcast format) |
| Can you provide an example in C? |
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* 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. |