Robotc functions how to#
Robotc functions code#
Robotc functions windows#

The yellow highlight shows the line to be executed next in the program. Using Step Into buttonД«y continuously pressing the Step Into button you can execute each command of your program and observe the outputs of the writeDebugStream and writeDebugStreamLine commands in the Controller Debug Stream. If you need better control over the program and want to observe how each command is executed then use the Step Into, Step Over and Step Out buttons of the Program Debug window. The execution stops automatically after the whole program has been executed.

Robotc functions code#

On pressing the Start button of the Program Debug window, the program execution starts and the following output of the example code is observed in the Controller Debug Stream. This will open up a blank Controller Debug Stream window. Now Go to вЂњRobot вЂ“> Debugger WindowsвЂ¦вЂќ and click on вЂњDebug StreamвЂќ. Running the Debug Stream Example ProgramДЄfter downloading the program, the Program Debug window will pop up with options: Start, Suspend, Step Into, Step Over, Step Out, Clear All and Refresh. It is therefore a good practice to not let your messages exceed 19 characters in length, and if they do, use multiple writeDebugStream functions to print them. If a message or String variable exceeds 19 characters in length then a warning is displayed on compilation of the program- вЂњString вЂњвЂ¦вЂќ exceeds 19 charsвЂќ and on running the program only the first 19 characters will be displayed. Note:- A message must be at most 19 characters long in ROBOTC.

Robotc functions how to#

An example code showing how to write variables and messages to Debug Stream is shown here. The writeDebugStream function writes a string, passed as an argument to the function, to the debug stream while the writeDebugStreamLine function writes the string to the debug stream and then goes to a new line. Now use the predefined ROBOTC functions- writeDebugStream() and writeDebugStreamLine() in your program to print out a message or the current value of a variable, in the debug stream window. These functionalities will be grayed-out initially, and are available once you run a program. You will now be able to see the Debug Stream functionality under Debugger Windows.

Robotc functions windows#

You will now find that the number of options under the Robot menu and the functionalities available in Debugger Windows have increased.

To change the Basic user level in your ROBOTCвЂ“ Click on the Window menu and under the Menu Level option, select the Super User functionality. This page shows how to use the Debug Stream in ROBOTC. The Debug Stream is the most useful option out of the three and is not available to the Basic user, but is available to the Expert and Super users.

Use the in-built Debug Stream functionality that helps by printing messages when you enter or exit loops and functions, or by printing the current value of a variable that you may have defined in the program.

If you are using an LCD display (like in the MINDSTORMS NXT) then you can print out statements to the display from your code and by examining them find out the part of code that is being currently executed.

Add tones and sounds to your program code, and from the sound determine which part of the code is being executed.

The 3 most common ways to do this in ROBOTC are:

Decide on the set of steps that the program will use to accomplish this goal.So you have ROBOTC installed on your computer and are ready to program your LEGO MINDSTORMS NXT, but you need a debugging technique to find possible run time errors in your program?.

Define what data variables are needed inside the function to accomplish its goal.

Define the data that comes into the function from the caller (in the form of parameters)!.

Understand the purpose of the function.

Click and drag code to the programming area.

Set up ROBOTC by going to Robot > Compiler Target > Virtual Worlds.

Set up ROBOTC by going to Robot > Platform Type > VEX IQ.

Open up ROBOTC Graphical by double clicking on the ROBOTC Graphical icon.Step 3: Write a simple ROBOTC Graphical Program Keeping this in view, how do I use Robotc? They save time and space by allowing common behaviors to be written as functions, and then run together as a single statement (rather than re-typing all the individual commands).ДЄlso, what does it mean when a word appears in color when typed in Robotc? It means that ROBOTC recognizes your word as an important word in the programming language. This control structure determines what code the robot will run as part of the main program.ДЄ function is a group of statements that are run as a single unit when the function is called from another location, such as task main(). Every ROBOTC program includes a special section called task main.