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[TRS300]

Hello All,  Got me a used 2015 CVO SG.  The bike has CAN Bus.  CAN is a cool thing to have on a vehicle.  Opens some cool opportunites for someone like me who knows a little about CAN Bus data and embedded programming.  I have a Chrysler 300C (which is really a mercedes CAN system).  I created a micro controller that can read engine and body information off the CAN bus and I do things like drive gauges, displays, etc...

I'd like to try and connect to the HD CAN and read messages and decode them.  For example, I could drive a digital display of my cylinder head temp, or add RGB LEDs to my gauges and drive color change based on RPM, etc...

First step is to connect using the data connector and then tray and capture messages.  I have a snuffer that can help be do this. But to get started I need to know the CAN frequency setting of the HD CAN system.

I know this is sort of a geek question but, does anyone know where I can get technical info of HD CAN?  As a minimum, the bus frequency of the message system?

BTW:  This is exactly how modules like V&H FP3 display data from the MC.  They are reading info off the CAN Bus through the data connector.  So as I said, I want to connect and make my own cool little Mods using my own reader / controller...  This is something I could not do on my good ole 2002 RG so I'm pretty excited to do this.

Regards,  Tim

--

[CVODON]

Whoa, Why? Just ride more and worry less. Enjoy the new bike!

[TRS300]

Lol...  I do ride friend. I bought this bike unsean while overseas at work. On my way back home to CA I flew into Wisconsin, bought the bike and spent 8 days riding it home. I had a great ride but the cvo needs some changes (suspension etc.). I'm not complaining. Working on my bike is just part of owning a Harley... Working on it helps make it more of my own. Anyway, doing CAN related mods is like any other mod. It's all about enjoying your ride in every way.  More to motorcycles than just riding them for me I guess. I'm not worried about anything.

[bigchuck]

I for one am interested in what you're able to come up with in CAN bus mods. Not that I would be able to do any of the mods myself. Keep us posted

[WTF Chuck]

I am interested in what you find out also I would like to be able to block the Can bus message or signal from the speed sensor to the GPS I have found the settings for speed lock out in the software and made changes but get check sum errors when trying to reload it. Best I can come up with is the changes may have to be made thru the data port. I am not a software guy by any means. Any help would be greatly appreciated.

[Eqcons]

I'd be super interested if you could switch the functions of the PTT and Cruise Control switches with each other!

[FlaHeatWave]

Hello All,  Got me a used 2015 CVO SG.  The bike has CAN Bus.  CAN is a cool thing to have on a vehicle.  Opens some cool opportunites for someone like me who knows a little about CAN Bus data and embedded programming.  I have a Chrysler 300C (which is really a mercedes CAN system).  I created a micro controller that can read engine and body information off the CAN bus and I do things like drive gauges, displays, etc...

I'd like to try and connect to the HD CAN and read messages and decode them.  For example, I could drive a digital display of my cylinder head temp, or add RGB LEDs to my gauges and drive color change based on RPM, etc...

First step is to connect using the data connector and then tray and capture messages.  I have a snuffer that can help be do this. But to get started I need to know the CAN frequency setting of the HD CAN system.

I know this is sort of a geek question but, does anyone know where I can get technical info of HD CAN?  As a minimum, the bus frequency of the message system?

BTW:  This is exactly how modules like V&H FP3 display data from the MC.  They are reading info off the CAN Bus through the data connector.  So as I said, I want to connect and make my own cool little Mods using my own reader / controller...  This is something I could not do on my good ole 2002 RG so I'm pretty excited to do this.

Regards,  Tim

--

Pretty Cool stuff here  A lot of potential...

It is a Delphi system, one might think that the protocols would be the same as GM

V&H is using it, so it's probably not "secret squirrel" s***

Very interested! Please keep us posted..

BTW, Welcome to the Best Site of its kind 

[FLSTFI Dave]

I'd be super interested if you could switch the functions of the PTT and Cruise Control switches with each other!

I sure agree.  That was one of the dumbest changes Harley made.  Cruise belongs on the right.

[CVODON]

I, for one, am glad HD finally moved the cruise to the correct (left) side where it belongs. Now like my other vehicles.

[bigchuck]

I, for one, am glad HD finally moved the cruise to the correct (left) side where it belongs. Now like my other vehicles.

It's more a matter of the of the PPT being on the wrong side. It would be easier to operate if it was not on the throttle side.

[Eqcons]

It's more a matter of the of the PPT being on the wrong side. It would easier to operate if it was not on the throttle side.

Yep, that, in spades. ^^^^

[FLSTFI Dave]

It's more a matter of the of the PPT being on the wrong side. It would easier to operate if it was not on the throttle side.

Exactly.  Much easier when it was on the left.

Hate it now, and having to remember which bike I am on, as one is a 13 and the other a 15, so their switched.

[TRS300]

....It is a Delphi system, one might think that the protocols would be the same as GM ...

Great point!  Cannot wait to get home so I can mess around trying to connect. It will be another few weeks yet.  Anyway, Searched on  Google "Delphi CAN" and saw some examples on the internet that show a Baud rate of 250K  (not specifically for a Harley but it may apply)  Also see instructions on how determine CAN frequency using an Oscilloscope.  I'll need to dig mine out and remember how to use it if all else fails   

[TRS300]

I'd be super interested if you could switch the functions of the PTT and Cruise Control switches with each other!

No...  It's not going to work that way.  CAN is a broadcast network (like an old telephone party line) where all the different modules are broadcasting and reading messages off the network.  Modules will transmit and receive messages, and depending on the modules function, it will take action based on the information. The CC and PTT switch modules have their transmitted message ID encoded in the modules.  And again, CAN is a communication system, I cannot go do anything to tell one modules to take the place of another...

There are messages that are designed to be seen by a module that will change a setting in that module (to change it behavior), but the feature would already need to be designed into the module to begin with.  For example, in  a car you might have an option to set if the headlights come on automatically or not with the windshield wipers.  A message is sent to the module to set that feature on or off.  But the feature itself would already have to be coded into the module to begin with.

I could "Read" messages generated by the PTT switch and then transmit "fake" Cruise Control messages. The bike would then think you are pressing the CC buttons and operate the CC. So, if you do not use PTT at all, then it might be possible to have Cruise Control switch actions from both the CC and PTT switches.



 

[Eqcons]

Damn, that's a shame. 

[TRS300]

Damn, that's a shame. 

Not really.  That is what makes these systems fairly safe and secure.  For the most part you really cannot easly "hack" a CAN system.  You need to be tapped into the twisted pair wires (bus) and you can only issue updates to modules limited to the design of the module itself.  The modules can be reflashed with new code base (added features), but that is not something that is normally done.

Do you actually us your PTT buttion for it's intended purpose?  If not (like me) I can use the button actions to do other things (like operate my CC)

[Eqcons]

Not really.  That is what makes these systems fairly safe and secure.  For the most part you really cannot easily "hack" a CAN system.  You need to be tapped into the twisted pair wires (bus) and you can only issue updates to modules limited to the design of the module itself.  The modules can be re-flashed with new code base (added features), but that is not something that is normally done.

Do you actually us your PTT button for it's intended purpose?  If not (like me) I can use the button actions to do other things (like operate my CC)

Well, the PTT button on the same side as the throttle is UNsafe in my opinion - yes, I use it for its intended purpose, and if you are trying to, for example, get instructions to or from another bike in heavy traffic in an unfamiliar location, using it is a nightmare. Goodness knows what possessed HD to switch them round like that.  Cruise is the less frequently used button, and having it near the throttle makes sense. Trying to hold a PTT button in while managing the throttle is just lunacy.

[grc]

Well, the PTT button on the same side as the throttle is UNsafe in my opinion - yes, I use it for its intended purpose, and if you are trying to, for example, get instructions to or from another bike in heavy traffic in an unfamiliar location, using it is a nightmare. Goodness knows what possessed HD to switch them round like that.  Cruise is the less frequently used button, and having it near the throttle makes sense. Trying to hold a PTT button in while managing the throttle is just lunacy.

 

As far as I'm concerned the only controls that should be on the right are the throttle and brake.  That may be influenced by the fact that a power saw attacked my right thumb many years ago and shortened it just enough that even the turn signal switch is problematic (fixed that with a homemade extension on the side of the button).  Unless one has huge hands, operating the various switches while maintaining good throttle and brake control can be troublesome.  Setting the cruise, as you mentioned, isn't done that often and usually isn't done while you are in a situation where throttle and brakes are being actively used. 

Back when I rode Japanese bikes, the turn signal switch was on the left and operated both signals.  It took quite a bit to get used to Harley's method when I bought my first Harley, and I still prefer the Japanese method.

Jerry