Differentiate drcs: Symbol Vs Design

Can you give an example of a "Design DRC"?

Hello Elecguy ,

Before logic import, I see the following DRCs in my design:

• Copper Features: Void Slivers

• Copper Spacing: Non-signal shape to Non-signal shape

• Shape to Shape Spacing

After logic import, I get the following DRCs:

• Pin Drill Hole to Pin Spacing

• Pin Drill Hole to Shape Spacing

• Thru-Pin to Shape Spacing

• Thru-Pin to Thru-Pin Spacing

• Thru-Pin to Route Keepout Spacing

As mentioned earlier, some symbols were intentionally created to violate DRC rules. My goal is to waive the DRCs that are part of the symbol(s).

Thanks

BR

Samba

Hi Samba,

This is an interesting question. You can check this by looking at the 2 entities generating the error. There is a DRC_ID->violations property that returns the list of figures causing error. By looking at their entity_id->parent and up you can figure out if they are coming from the same symbol or not.

However, please note that in layout, you can attach a property to the Symbol (via Edit-> Object Properties), named Nodrc_Sym_Same_Pin = True that helps you get rid of these errors for good. This assumes you know very well what library is doing.

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Hello andakConsultingLtd 

violations~>parent~>type

violations~>parent~>objType

I tried the same, but was unsuccessful.

For an example:

Shape to Shape drc error, part of symbol was shown as design drc.

Doesnt know how to proceed further!!

Thanks

BR

Samba

Try the code below, it should give you a starting point. I am sorry, parent indeed didn't set you in the right direction.

; the code below works in my case for a pin to pin DRC. You might adjust your code a bit to cover all scenarios
axlSetFindFilter(?enabled `("NOALL" "DRCS") ?onButtons `("DRCS"))
; after entering next line, you must click on an error to move on
mySymbol = car(axlGetSelSet(axlSingleSelectPoint()))
parentList = mySymbol->violations
first = car(parentList)
myComponent = first->component
mySymbol = myComponent->symbol
myRefDes = mySymbol->refdes
axlClearSelSet()

the output, after entering this line by line is shown below, as you can see, it shows the RefDes at the end.:

note: last lines can be optimiezed into this:

myRefDes = first->component->symbol->refdes

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