Renesas micro-controller software

[-JFK-]

Hi,
I have buy a e-electric vehicle that use Lvbelan motor controller.
This controller use Renesas micro-controller.
I'm looking for a software that can permit to set this controller.
Do you have a idea?
I have found nothing for now...
Thanks.

 

[-JFK-]

No one ?

 

[TilmanBaumann]

Renesas is a generic microcontroller manufacturer. That won't get you far.

What makes you think this thing can even be programmed? Those simple controllers often can't.

 

[TilmanBaumann]

The manufacturers website is intact. http://lvbelan.com/

I see no hint that any of their controllers are programmable.

In fact you can see that all the setup choices for your controller are printed on the label.
Cut-off voltage, brake power, current max...

 

[-JFK-]

Thank's,

I'd like to increase the max current form 25 to 34A.
I was thinking that can be done via software.
Thank's for your help.

 

[amberwolf]

I'd like to increase the max current form 25 to 34A.
I was thinking that can be done via software.

It probably can, at the manufacturer. However, if they don't offer the software to end-users, then there's no way to access the internal programming of teh chip.

Even if you had the software, that stuff almost never is able to read anything off the chip, so any existing settings would be completely unknown. When you write new settings to it you'd overwrite *all* of the settings, with whatever was chosen in the software at the time, even if those were not correct for that controller.

It's possible to essentially brick a controller that way, for instance by accidentally setting an LVC that's higher than the electronics can physically handle, so you can't hook a power source to it of a high enough voltage to re-enable the controller without damaging it. (it might still accept programming, so wouldn't really be "bricked" but it wouldn't operate until you figured out the problem and fixed it, if you could).


It's probably easier to modify the controller by inserting a voltage divider (or altering the existing one) between whatever reads the shunt (probably an op-amp) and the MCU. There are a number of threads about modifying shunts and/or current limits of various controllers that suggest various ways of doing this sort of thing. I know that Fechter and Jeremy Harris have both posted in threads like that, so you can look thru their posts for such threads if a regular search doesn't find them. But there's no simple step-by-step because each controller is designed differently.