Big Schematic Automation

Hi,

I guess what you want is doable in SKILL even though I'm not sure I have fully understood your needs

Are you sure you cannot achieve your objective using hierarchy coupled with parallel and serial instances, pins etc. ?

You can do many things in Schematics using just the right instances/pins/nets names and buses suffixes

Cheers

Aurel

I was thinking the same thing as Aurelien. For example, here's a schematic for a 1024 element row - and you could then produce a similar schematic instantiating an iterated instance of PixelRow to connect the rows up. It doesn't really need SKILL...

 They told me that it was possible with busses (a college from work told me about it but I couldnt really replicate it) but my biggest fear was setting the parameters "Pot". They have to be in order for different purpouses. Is it possible to do that using ocean for example? Like

desVar("cot0/Pot"    x )

desVar("cot1/Pot"    x )

desVar("cot2/Pot"    x )

Wouldnt it repeat when trying to do it row by row with the new instance? or it would continue to cot1024,cot1025,cot1026.. . Sorry about my english, it's clunky.

Thanks for the help!

I tried using a smaller design (4x4) using busses, and I get to the point of defining the power values of each cell.

In a ocean script I have something as follows.

desVar( "/I<0>/C<1>/IP1/Pot" 4 )
desVar( "/I<0>/C<1>/IP2/Pot" 4 )

But doesnt really work. The "Pot" is a CDF value from the first cell Pixel_Block (pPar("Pot")). I did search and couldnt find a way of dealing with it, is there a way of doing it like this or the value is locked as "Pot" and I cant change it?

Thanks, Yass

I hadn't fully read through your original post (partly because I didn't fully get what you were trying to do) when I made my suggestion about using iterated instances and buses. You can't set "hierarchical" design variables, because design variables are not hierarchical.

There are two types of parameters/variables:

1. Design variables - this is where you have a component parameters - eg. on a transistor it might have w=MYWID - in that case MYWID is a design variable and is global - so has the same value throughout the circuit. For this you can set desVar("MYWID" 2u) in an OCEAN script for example
2. Passed parameters - using pPar(). So the transistor on a block could w=pPar("wp") and then in the CDF for that block you can define the default value of wp, and on various instances of the block you can set what that instance's value of wp is - so one instance has wp=2u, one has wp=2.5u etc. Or an instance could have wp=pPar("wp1") and then pass the parameter through another level of hierarchy. You cannot set these parameters with desVar() unless the parameter is passed to a point where you have the value set to a design variable

ADE Explorer and Assembler (and the older ADE XL) have the ability to set parameters as well as variables, and these can be the values of components in a block. So that means that you can set the values of a CDF parameter for different instances differently at simulation time. Note that these are instance parameters rather than occurrence parameters - so this means that you can set the value of a particular instance in all occurrences of the containing cell - you can't set it for a hierarchical path.

It's not entirely clear exactly what you need to be uniquely set - so trying to give you an explanation as to what you can/can't do is rather hard.

Perhaps you should contact customer support so you can explain this in more detail to an application engineer?

Andrew

Hello, so I cant set the value "Pot"  in hierarchical circuits for different cells, that's a problem. The reason I was asking for help in the first place is about the SKILL code. I want to create a square array of these "Pixel_Block" cells in numerical order. I have to set the name in the Pot box ("Pot" is a CDF parameter of the cell) to different ones in that kind of numerical order, like Pot1, Pot2, .... Pot1024, then jump to the next row to Pot1025, Pot1026, .... , repeating this process until it reaches the Potn cell. After this I will use an ocean script that I have to set the different power values for each an everysingle one of these Pot using desVar( ) , like this

desVar( "Pot1" 1)

desVar( "Pot2" 2)

desVar( "Pot3" 5)

I too wanted to know if it was possible to set the blocks with the ID in numerical order too (in rows with I0, I1, I2, .... and then jump to I1025 for the next row, like with the Pot) . Is it possible using a foreach loop to set these 2 things in SKILL?, I cant quite figure it out. Knowing how to do these 2 things  would help me a lot, I dont mind setting the wires by copying them, but instatiating the name for each and single one of the cells when the array is nearly a million cells is impossible hahahahaha.

If it is needed I can contact costumer support and send an application on monday (since I need to request the license id from where I work)

Thanks in advance!

Yass

Hello again, I have done small changes and now I'm able to place these blocks with different ids (names) in numerical order. I just added this to the code.

(let k idName)
(setq idName list("I1" "I2" "I3" "I4") )

k = dbCreateInst(cv master "" (list x y) "R0")
(foreach elem1 idName
(k~>name=elem1)
)

It works perfectly, It places the cells with the names in order. For me is important since later I have different routes of voltages with names inside the block and they have to be in order. Now my last thing to achieve is to set the cdf property to different names but in order too. I mean this.

Each cell has a CDF parameter called Pot, and I want it to have a different name so later I can slap any value using a script. I tried using a foreach loop too but it only set the lastest name of the loop. It sets the value to Pot4 to all the cells, and I dont want that.

(foreach elem2 list("Pot1" "Pot2" "Pot3" "Pot4")
(k~>Prop=elem2)
)

Soon I'll have the license to contact customer support and send a ticket, but I'm curious if it is possible to achieve this easily or if is more complicated.

Thanks again for your patience.

Yass