Fiat Ducato communication

[savikko]

Hi!

Has anyone been able to get any "significant" information from Fiat Ducato?

If I have understood correctly, the Fiat OBD is somehow non-standard.

Anyways, I am mostly interested about few very simple data points (including, but not limited to):

• Battery voltage (probably will get this in very near future directly via WiCAN)
• Engine running/not running boolean (or possibly the RPM)

[meatpiHQ]

@savikko are you able to read these parameters using carscanner or other apps?

[savikko]

@savikko are you able to read these parameters using carscanner or other apps?

Nope. If I remember correctly (its been a while since I digged into this deeper) there was some very special Fiat Android App which read the values.

Now actually going through data which I get from CAN and tried to understand the data format.

Example data:

{
    "bus": "0",
    "type": "rx",
    "ts": 46223,
    "frame": [
        {
            "id": 102277121,
            "dlc": 8,
            "rtr": false,
            "extd": true,
            "data": [0, 40, 6, 206, 40, 26, 68, 25]
        },
        {
            "id": 1089542,
            "dlc": 8,
            "rtr": false,
            "extd": true,
            "data": [0, 0, 0, 0, 0, 0, 0, 0]
        },
        {
            "id": 2138113,
            "dlc": 8,
            "rtr": false,
            "extd": true,
            "data": [0, 0, 3, 57, 110, 0, 40, 224]
        }
    ]
}

It seems that 102277121 has bytes 2 and 3 (6,206) which are as 16bit value 1734 (possibly RPM).

Now tried to add this as JSON format, with these settings:

Probably PID and Index should be actually -1 but admin panel does not allow setting -1 values to those..

And sorry if I am asking questions which are already on the documentation, but considering myself as a beginner here so questions might be little stupid :)

[savikko]

Actually, after Store + Reboot i got this info there and seems that PID and Index does not matter.

Now I "only" have to investigate what CAN IDs contain the needed data here..

[savikko]

Well, after some investigation it seems that this basic data is not broadcasted all the time so it has to ve requested.

If anyone have any idea how this could be done, I am very interested.

Using Home Assistant, but I would like WiCAN to do polling and then send receives data - parsed - via MQTT.

[meatpiHQ]

@savikko I suggest you try again with carscanner. Make sure to set the protocol manually to 11bit 500K in carscanner.

[stav242]

Well, after some investigation it seems that this basic data is not broadcasted all the time so it has to ve requested.

If anyone have any idea how this could be done, I am very interested.

Using Home Assistant, but I would like WiCAN to do polling and then send receives data - parsed - via MQTT.

Hi , im also interested in this.

i have been writing up my setup.
https://sites.google.com/view/homeassistant-campervan/can-bus-integration

aim to get B-CAN data into Home Assistant.