Nissan CAN bus data help

TEDiX · January 23, 2025, 7:38am

Hi, everything is fine, thank you.
So far I haven’t been able to extract the odometer.
I got my hands on this formula, but didn’t find it suitable for Realdash XML calculation.

Frame : 5c5

Position in frame: B.8-D.1

Meaning: Car odometer absolute value (mileage)

Format: 24-bit unsigned integer

Unit: km / LSB

<frame id="0x5c5" size="8">
		<value targetId="310" units="km" startbit="??" bitcount="??" conversion="??"  ></value>   <!-- Odometer-->
	</frame>

realdashdev · January 23, 2025, 8:41am

Per your CAN log, odometer seems to read 386396km, is that right? If it is, you can read it with:

<frame id="0x5c5" endianness="big">
    <value targetId="310" offset="1" length="3"></value>   <!-- Odometer-->
</frame>

Francesleite · January 23, 2025, 4:16pm

Hello friends, I analyzed the entire 5c5 frame and did not find the value. Could it be that my car does not have this attribute? Nissan Tiida C11. analyzing your xml a lot of things are the same, but not the odometer.

TKS!

realdashdev · January 24, 2025, 7:14am

It could be that Nissan Tiida has different CAN layout than Qashqai and X-Trail that we are working on here.

Francesleite · January 25, 2025, 4:47am

By giving feedback, you can find it. I’m looking for targetId=“203”
Is it common for cars to have this attribute?

TEDiX · January 27, 2025, 4:10pm

Yes, that’s correct. Thank you for your assistance.

<frame id="0x5c5" endianness="big">
    <value targetId="310" offset="1" length="3"></value>   <!-- Odometer-->
</frame>

Francesleite · January 27, 2025, 6:17pm

I managed to find some fuel values for my Nissan. I believe they are the same as yours, but they are quite confusing. Low level decimal value 255, level 50% decimal value 0. For the next levels it starts a new count from 0 50% to 52% full tank. The RealDash fuel gauge goes down when it reaches half a tank and then goes up again. Any suggestions dev?

TEDiX · January 27, 2025, 7:35pm

you can just make a conversation about the value you receive

conversion="v+or-or/‘’

github.com

janimm/RealDash-extras/blob/master/RealDash-CAN/realdash-can-description-file.md

&nbsp;
# **Channel Description File (XML)**
The RealDash CAN Channel Description File describes how data in CAN frames are interpreted by RealDash.

Channel description file starts with tag **RealDashCAN** including the file format version **version="2"**. Next in file is a list of **frames**.

    <?xml version="1.0" encoding="utf-8"?>
    <RealDashCAN version="2">
        <frames>
        <!-- list of frames here -->
        </frames>
    </RealDashCAN>

&nbsp;
## **'baseId' attribute [optional]**
**frames** may optionally contain a attribute **baseId** that is used for the enclosed **frame** tags. Example:

    <frames baseId="3200">

Specifies the **baseId** of 3200. Any id value in later **frame** is added to the base id. For example, if **frames baseId** is 3200 and it contains a frame with **id** 1, then the frame is considered to have an **id** of 3201.

This file has been truncated. show original

P_invest_new · February 26, 2025, 5:17pm

May be this is not an important issue: when I open your file with Microsoft Edge, I get the following error:

This page contains the following errors:
error on line 85 at column 1: Extra content at the end of the document
### Below is a rendering of the page up to the first error.

Using Notepad I found that line 85 is the last one an it is duplicated with line 83:

*** /RealDashCAN *** (I can´t write the initial < and final > characters).

After deleting line 85, Microsoft Edge opens the file without errors.