RELEASE 1.0

2026-08-30 18:02:23 +02:00 · 2016-11-08 09:57:35 -08:00
parent bdcebad086
commit f48272bde6
463 changed files with 122469 additions and 0 deletions
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+#!/usr/bin/env python
+import gdsMill
+
+#creater a streamer object to interact with the cadence libraries
+streamer = gdsMill.GdsStreamer()
+
+#use the streamer to take a cadence layout, and convert it to GDS 2 for us to work with
+#the GDS will be named testLayoutA.gds
+streamer.streamFromCadence(cadenceLibraryContainerPath = "/soe/bchen12/openram/branches/newptx/freepdk45/openram_temp",
+                           libraryName = "gdsMillTest",
+                           cellName = "testLayoutA",
+                           outputPath = "./gdsFiles")
+
+#create a layout object - this object represents all of the elements within the layout
+myLayout = gdsMill.VlsiLayout()
+
+#give our layout object to a gds reader object.  The gds reader will look at the binary gds 2 file and
+#populate the layout object with the file's contents
+reader = gdsMill.Gds2reader(myLayout)
+
+#tell the reader object to process the gds file that we streamed in above
+#un-comment the next line to see some details about the gds contents
+#reader.debugToTerminal=1
+reader.loadFromFile("./gdsFiles/testLayoutA.gds")
+
+#our layout object now contains all of the elements of the layout
+#let add a box to the layout
+myLayout.addBox(layerNumber = myLayout.layerNumbersInUse[0],    #pick some layer
+                offsetInMicrons = (-10,0),  #location
+                width = 10.0,   #units are microns
+                height = 5.0,
+               # updateInternalMap = True, #This is important for visualization - see note 1 below
+                center = True)  #origin is in the center or the bottom left corner
+#Note 1:the layout object keeps track of its elements in a 2D map (no hiearachy)
+#this makes visualization more efficient.  Therefore, to do a PDF output or some other
+#flat output, you need to "update the internal map" of the layout object.  Only do this
+# ONE TIME after all the objects you are manipulating are fixed
+
+#let's take out new layout and stream it back into a cadence library
+#first, create a new GDS
+#we change the root structure name (this will be the cellview name upon stream in)
+myLayout.rename("testLayoutB")
+writer = gdsMill.Gds2writer(myLayout)
+writer.writeToFile("./gdsFiles/testLayoutB.gds")
+
+streamer.streamToCadence(cadenceLibraryContainerPath = "~/design/600nmAmi",
+                         libraryName = "gdsMillTest",
+                         inputPath = "./gdsFiles/testLayoutB.gds")
+
+#let's create a PDF view of the layout object
+#first, create the object to represent the visual output
+visualizer = gdsMill.PdfLayout(myLayout)
+
+#since we have no knowledge of what the layer numbers mean for this particular technology
+#we need to assign some colors to them
+
+#uncomment the following line if you want to actually see the layout numbers in use
+#print myLayout.layerNumbersInUse
+
+#for each layer number used in the layout, we will asign it a layer color as a RGB Hex
+visualizer.layerColors[myLayout.layerNumbersInUse[0]]="#219E1C"
+visualizer.layerColors[myLayout.layerNumbersInUse[1]]="#271C9E"
+visualizer.layerColors[myLayout.layerNumbersInUse[2]]="#CC54C8"
+visualizer.layerColors[myLayout.layerNumbersInUse[3]]="#E9C514"
+visualizer.layerColors[myLayout.layerNumbersInUse[4]]="#856F00"
+visualizer.layerColors[myLayout.layerNumbersInUse[5]]="#BD1444"
+visualizer.layerColors[myLayout.layerNumbersInUse[6]]="#FD1444"
+visualizer.layerColors[myLayout.layerNumbersInUse[7]]="#FD1414"
+
+#set the scale so that our PDF isn't enormous
+visualizer.setScale(500)
+#tell the pdf layout object to draw everything in our layout
+visualizer.drawLayout()
+#and finally, dump it out to a file
+visualizer.writeToFile("./gdsFiles/gdsOut.pdf")
+