[Ovmsdev] Twizy controller configuration / CANopen SDO protocol
dexter at expeedo.de
Tue Dec 31 20:39:26 HKT 2013
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
This update enables access to the SEVCON controller configuration of the
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
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:
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!
Michael Balzer * Paradestr. 8 * D-42107 Wuppertal
Fon 0202 / 272 2201 * Handy 0176 / 206 989 26
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