delete existing wire from a terminal and redraw a new one.

Hi Adesh,

I have not investigated this but you could try setting the "net" attribute of the instTerm - however if I recall correctly, if you set just the net in a schematic and don't update any associated label, then Check & Save will re-assign connectivity based on the label, not the net db object.  You could find the physical wire that is overlapped by the instTerm and then find the one associated label and update that - use dbGetOverlaps() to find the 'line' db object that represents the wire and then you should be able to find the attached/associated label (or textDisplay?).

Hope this helps!

Lawrence.

Hi Lawrence,

The end goal is to redraw the wires on the bulk terminal in a different manner, hence setting the net wont help I think. I will have to extract information, delete and then redraw. 

I tried using the dbGetOverlaps() , thanks for letting me know about it. But since the instTerm's are not always in the same order, its a pain having to find out the terminal order and then access the bulk terminal. Having done that, I'm still having to access the figs attribute since line is not a layer/property it says.

I'm trying to modify the algorithm with what I have from the dbGetOverlaps() but still looking for a easier way to access and modify the wires instance by instance. 

Thanks

I'd suggest you contact customer support, providing the code you have so far, and an example schematic and details on precisely what you're trying to do. It's quite difficult to infer that from what you've said so far - because there's rather strange terminology that you're using (I'm not sure what the order has to do with it). Also I don't know what a line layer/property means.

Regards,

Andrew.

Hi Andrew,  

Let me to try to be precise as to what I'm trying to do.

I want to edit a schematic by redrawing nets on all bulk terminals but since the net names need to be same after redrawing, I extract information from the original schematic before deleting the original nets on these instances.

My algorithm would be:

foreach instance
(
find the bulk terminal from the instTerms
(
save net name from wire connected to the bulk
delete the net on the bulk terminal
function call to draw new net with the same net name
))

To delete the bulk net, I use schDelete() and I delete the figs attribute of the net which gives me a warning saying,
dbGetq: object is a purged/freed object - db:0x158bb9c4

and I want to avoid this or do the task in some other way. 

Thanks.


 

This still isn't very precise which is why I suggested you contact customer support (you ignored that part). For a start. it's hard to understand why you want to delete and recreate it with the same net - what's the point? Also, you're talking about deleting the net - do you mean delete the all the wires on that net, or just the segments connecting to the bulk pins? Or should it delete further than that? When you are recreating the "net" (the wiring) how are you determining the geometries for that wiring?

Note I'm not expecting you to answer these here, as without some examples of what you're trying to do, it's very hard to give specific advice. That's why I suggested contact customer support, so you can share some actual examples rather than just incomplete descriptions.

Regards,

Andrew.