Tcl basics pdf 118p this note introduces the basics of tcl. The perl and tcl chapters can be read independently. Tcl is shell application that reads tcl command from its standard input or from a file and gives desired results. Why are perl and tcl scripting languages used in the vlsi. We can run tcl commands in a script or in an interactive interpreter. The first tcl script previous section next section back to the index in this section, you are going to develop a tcl script for ns which simulates a simple topology. It is a scripting language that aims at providing the ability for. This book discusses the gui toolkit tk in considerable extent, even though its not in the title. Tcl tk i about the tutorial tcl is a general purpose multiparadigm system programming language. To write tcl scripts, you have to understand two broad subjects. It is often used for prototyping and embedded systems, but it is quite capable enough to be used for fullscale applications.
Safely make donations with my paypal link, accessible from any page within this site. Chapter 9 describes file io and running other programs. Tcl is a scripting language created by john ousterhout. From my experience, perl is the most popular choice for this job, but tcl is also used extensively. Chapter 3 presents a sample application, a cgi script, that implements a. The new tcl archive also has all the orginal egghelp tcl scripts. December29,20 onthe28thofapril2012thecontentsoftheenglishaswellasgermanwikibooksandwikipedia projectswerelicensedundercreativecommonsattributionsharealike3.
Training will provide the detailed practical exposure on each aspect of project flow setup mostly focused on physical design, sta, and functional verification with multiple hands on examples. Using tcl scripts with the ace you can copy, upload, and execute toolkit command language tcl scripts on the ace. Invoking tcl using the standalone interpreter, tclsh. An introduction to tcl scripting for cisco ios devices how to automate common setup tasks duration. Tcltk i about the tutorial tcl is a general purpose multiparadigm system programming language. After reading part i you will know enough tcl to read and understand other tcl programs, and to write simple programs. Here are a few examples of tcl and tcl tk scripts that weve found useful in our own simulation and synthesis work. Launch and execute tcl script before the tcl script is debugged, we shall execute the script to show the process and output of the script.
In this example, as in all tcl examples in this book, tcl commands that you type. A file represents a sequence of bytes, does not matter if it is a text file or binary file. Select the fourth icon, run tcl tk script, on the scripting toolbar shown. You are going to learn how to set up nodes and links, how to send data from one node to another, how to monitor a queue and how to start nam from your simulation script to visualize your simulation. It was influenced by, and bears some similarities to, lisp. It describes the basic mechanisms used by the tcl interpreter. Cisco ios scripting with tcl configuration guide, cisco ios.
Tcl, or tool command language and pronounced tickle, is a dynamicallytyped scripting language originally invented in the late 1980s. Tcl scripting is much sought after skill set for every vlsi engineer. Tcl supports file handling with the help of the built in commands open, read, puts, gets, and close. Arrays are the most flexible and useful data structure in tcl. The cisco ios scripting with tcl feature provides the ability to run tool command language tcl version 8. Tcl fundamentals 1 this chapter describes the basic syntax rules for the tcl scripting language. The following commands were introduced or modified. The language is commonly used for guis and testing. Both flows can take advantage of the vivado ide, or be run through batch tcl scripts. I suggest that you call this first example example1. First of all, you need to create a simulator object. The first tcl script information sciences institute. Chapter1 describes the fundamental properties of the language.
About 2 notice for any reuse or distribution, you must make clear to others the license terms of this work. Tcltk engineering manual september 1, 1994 1 tcltk engineering manual john k. Linux shell scripting tutorial a beginners handbook. Its simplicity in syntax and common sensical approach to semantics makes this an easy language to learn and become proficient in. Unlike tcl scripts, xdc files are managed by the vivado ide so that any constraint edited through the graphical interface or the timing constraints editor can be saved back to its original xdc file. Starting with the basic features, it expands its scope to include the more advanced concepts, facilities and programming. Now we are going to write a template that you can use for all of the first tcl scripts. Using tcl and sdc commands introduction this tutorial shows you how to use the xilinx planahead software to write scripts with the tool command language tcl api. This tutorial describes the basic steps involved in taking a small example design from rtl to bitstream, using two different design flows as explained below. Here are a few examples of tcl and tcltk scripts that weve found useful in our own simulation and synthesis work. These facilities let you build tcl scripts that glue together other programs and process data in files. It assumes that you are familiar with the planahead software graphical user. For instance, rapid prototyping, testing database interaction, etc. Tcl scripting introduction developing and running tcl scripts to control thealtera quartus ii software allows you to perform a wide range of functions, such as compiling a design or writing procedures to automate common tasks.
If youre a scripts writer use the link above and submit your scripts. The language is commonly used for rapid prototyping, scripted applications, guis, and testing. This tutorial demonstrates the way to link hyperworks desktop with scriptview for live debugging. The author has a desire to include other scripting languages, e. For this tutorial you will work exclusively in the iccpar subdirectory.
This short tutorial will concentrate on the most basic concepts to. The tclsh is a shelllike application that reads tcl commands from its standard input or from a file and evaluates them. Hypermesh desktop 2 the tcl macro must be contained in a procedure. Expect is a tool primarily for automating interactive applications such as telnet, ftp, password. This short tutorial will concentrate on the most basic concepts to get you started as quickly as possible. Tcl tutorial introduction command, variable and backslash. Tcl scripts, c programs, and computer output appear in a typewriterstyle font. For the latest feature information and caveats, see the release notes for your platform and. Tcl is string based scripting language and also a procedural language. But now i would like to create a script with the help of if loop. Cgi scripts enable dynamic generation of html pages.
A blog about tutorials on i will show you a simple way how you can create output files in your tcl scripts easy learning is a study based website expect script tutorial pdfexpect script tutorial pdf expect script tutorial pdf expect script tutorial for beginners a tutorial on tcl. Great listed sites have tcl programming tutorial pdf. The command name magic itself is a script, not a compiled executable. Tcl syntax tcl syntax is the set of rules the tcl command interpreter follows when it interprets a command string a line that contains a command and its arguments. Your software release may not support all the features documented in this module. Because it is a tcl extension, the full facilities of tcl are available for use in expect scripts. Adding new commands to tcl proc variations in proc arguments and return values variable scope global and upvar tcl data structures 101 the list. You can use tcl scripts to manage a quartus ii project, make assignments, define. Arithmetic and logical operations tcl tutorial 3 minutes expr statements duration. The purpose of developing this language is easy embedded inti applications. It assumes that you are familiar with the planahead software graphical user interface gui and project flows. Tcl syntaxtcl syntax is the set of rules the tcl command interpreter follows when it interprets a command string a line that contains a command and its arguments. Of course they probably wont exactly meet your needs, but we hope they will provide you with some starting points for your own scripting efforts.
You can write your tcl scripts in any text editor like joe or emacs. The vlsi design industry relies heavily on electronic design automation eda, and scripting forms an integral part of eda. Works like a regular shell prompt good for interactive testing no command line history and editing no vmd extensions unless using vmd console writing a script file hello. It defaults to standard output channel stdout if not specified. It is a scripting language that aims at providing the ability for applications to communicate with each other. The source code is compiled into bytecode, which is later interpreted by the tcl interpreter. Chapter 2 is a short introduction to running tcl and tk on unix, windows and macintosh systems. Hello everyone, i am new to tcl programming and worked little bit with command. Many people use tcl for this purpose already but in an ad hoc way and without. At the c programming level, tcls threading model requires that a tcl. On the other hand, tk is a cross platform widget toolkit used for building gui in many languages. Feb 24, 2015 an introduction to tcl scripting for cisco ios devices how to automate common setup tasks duration. This is generally only a problem on windows where for many tasks a. There is a new tcl archive accepting script submissions.
Tcl is a general purpose multiparadigm system programming language. This paper describes how to write cgi scripts using tcl. Cisco ios scripting with tcl configuration guide, cisco. Information that you type at a tcl or shell prompt is in a bold typewriterstyle font. In this tutorial, we will use the interactive tcl session to demonstrate some smaller code fragments. The following shows a simple example where you enter a tcl command in tclsh and see the results. It can be used interactively, or by running scripts programs which can use a package system for structuring, hence allowing to do much with little code. Tcl is a widely used scripting language within the networking community. Under the view menu, select toolbars hyperworks scripting 5.
Tcl is a stringbased, interpreted command language. Potential authors of such independent chapters, with the same structuring as the perl and tcl chapters, are encouraged to drop me an email. After reading part i you will know enough tcl to read and understand other. I wanted the script automatically create the solids with bounding surfaces option and if the solids already exist in. Mar 10, 2020 tcl is string based scripting language and also a procedural language. The most recent version of the thread extension as this was being written was 2. Depending on the input format mw, verilog, ddc, it will read the appropriate files and also include the floorplan information provided via either a def input file, or already existing in the initial floorplanned cel. Tcl also has large libraries of developed scripts that can easily be found from various sites. Tcl commandsalthough the syntax is the same for all commands, each tcl command is meant to perform a specific task. Introduction this is a manual for people who are developing c code for tcl, tk, and their extensions and applications.
In my opinion, the best package help included is the one provided by activetcl. Good programming style is impor tant as your tcl scripts get larger. Jul 14, 2017 the cisco ios scripting with tcl feature provides the ability to run tcl version 8. This chapter takes you through the basics of the tcl language syntax. Notice that a new tool set of icons in the toolbar step 2.
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