[Ovmsdev] Twizy controller configuration / CANopen SDO protocol

Nikki Gordon-Bloomfield nikki at littlecollie.com
Wed Jan 1 05:49:22 HKT 2014

Oh darn. I knew I should have kept my Twizy...

On Tuesday, December 31, 2013, Michael Balzer wrote:

> Hi everyone,
> sorry for dropping behind/off last months, lots of work.
> I've not been able to catch up on the framework advances yet, but
> nevertheless wanted to announce a major Twizy update I'm currently working
> on.
> This update enables access to the SEVCON controller configuration of the
> Twizy.
> Low level commands allow read and write access to all SDOs. Macro commands
> allow to easily change common settings like maximum speed, maximum torque,
> power and recuperation levels and drive profile characteristics.
> There is a potential benefit for other vehicles from this development:
> I've done a basic CANopen SDO protocol implementation for this. The
> implementation is specific to the Twizy only because it's limited to
> addressing just node #1 and currently only supports expedited SDO
> transfers, not segmented. The node id could easily be made variable, and
> segmented transfers should be not much of a problem. It still is nowhere
> near a complete CANopen protocol implementation, but allows SDO reading and
> writing. Tell me if this sounds useful for other vehicles.
> As I've not yet integrated your latest work, I've pushed this into my
> Github repository first:
> https://github.com/dexterbg/Open-Vehicle-Monitoring-System
> I'll also wait for some more user feedback before going on, and I also
> want to implement support for the Twizy 45 before merging this in.
> Just wanted to let you know in case you wonder about rising OVMS hardware
> sales lately ;-)
> Oh, and I wish you all a happy new year!
> Regards,
> Michael
> --
> Michael Balzer * Paradestr. 8 * D-42107 Wuppertal
> Fon 0202 / 272 2201 * Handy 0176 / 206 989 26

Nikki Gordon-Bloomfield


email: nikki at littleCollie.com
tel: +44 7901 553308
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