Adding 29bit canid support?

[bayti]

Possible adding 29bit CANID Support !

[Feezex]

is there any purpose?

[bayti]

yes, unable to connect to truck control units. only 11 bits are supported. trucks and buses work with 29 bit can id.

[jglim]

Unfortunately this isn't supported at the hardware level. 29-bit devices typically use J1939 which isn't supported by the J2534 communication standard. This earlier issue discusses about 29-bit support.

[bayti]

Hello @jglim jglim, i am using already 29 bit devices with j2534 communication interface. Example. Chipsoft(j2534-24V)--> pcmflash.ru (software(flash) read and write Scania Ecu's.) i think , its communicate ISO15765-2 Extended ID. Please inform me, if i misunderstand anything!

Peak UDS documentation

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[jglim]

If those ECUs uses regular ISO15765-2, then the connection should (in theory) be configured correctly, as I specified ConnectFlag.CAN_ID_BOTH during the device's initialization:

CaesarSuite/Caesar/Diogenes/ECUConnection.cs

Line 275 in c9ec0d2

ConnectionChannel = ConnectionDevice.GetChannel(Protocol.ISO15765, (Baud)profile.GetComParameterValue(ECUInterfaceSubtype.ParamName.CP_BAUDRATE), ConnectFlag.CAN_ID_BOTH);

However, if it does not work out of the box, it is going to be difficult and time-consuming for me to diagnose the issue as I do not have a compatible 29-bit bus/truck ECU. As a minimum, working/broken CAN traces of would be helpful for diffing/comparison.