sdo callbacks about canopennode HOT 6 CLOSED

Hi

Check out CO_OD_configure()

You can register a callback function for a specific index, which seems to be exactly what you want. There are examples throughout the code for how to use it.

//Jens

from canopennode.

Hi,
thanks for the fast replay. That is exactly what I need :) I was searching for this feature in the OD files, didnt expect that there is an extension of the OD implemented in the SDO files.

from canopennode.

It seems the function CO_OD_configure() is not available in CANopenNode V4, or I am I missing something?

from canopennode.

In V4 there is completely new Object Dictionary interface. See example in https://github.com/CANopenNode/CANopenSocket.

from canopennode.

So if I understand correctly. To create a callback function on an SDO write, using OD_extension_init a custom write function can be created which can call a callback function and OD_writeOriginal can then be used to perform the actual write. Is this the best approach?

from canopennode.

In general you don't need OD_writeOriginal, you also don't need variable to be stored in OD memory, if you have custom write callback.
OD_writeOriginal only writes data to the original location in OD memory. It is useful, if (part of) OD memory is stored to non-volatile memory.

from canopennode.