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Again, if you start above the first line of code that looks wrongly indented you should be able to track down your error. You can see in the above code listing that task main() and its body are indented (pushed to the right). So far I’ve only used the datalogAddValue function, which I’ll talk about here. There are not that many items to choose from. Unreferenced function / Undefined Procedureįrom the following code: void movForward ( float inches ) The RobotC functions for the datalog can be found in the left-hand column of the help page above. In a perfect world you should strive to have no messages at all in the Compiler Errors window pane, your code will generally be cleaner. Error something is broken and you need to fix it.The compiler is pretty sure you wanted to use it, but you’re not. You write a function moveForward(float inches) but it’s not being used. Warning the compiler is pretty sure this thing will cause a problem, just maybe not right now.Maybe you defined a variable to use somewhere else, but deleted that other code, so that variable is hanging around for no reason. These messages are really just to help you keep your code clean, as far as the compiler can tell they don’t have the potential to cause any problems. Info nice to know information that the compiler discovered.
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Let’s quickly chat about the various Message Types:
#Robotc functions how to
Some do not – and know how to normalize the values received from the some sensors require optional 9V battery power and Theįirmware must know the type of sensor so that it can properly configure The NXT kitĬomes with several LEGO developed sensors – touch, sound, light, sonar –Īnd there are many more 3rd party sensor types in development. lightSensor, leftBump, rightBump, sonar, etc) to a sensor rather than one of However, it is a good programming practice to assign a meaningful name (e.g. S1, S2, S3, and S4) or even the numerical array index (i.e. The array index for these variable can be the sensor ThereĪre a number of “built-in” variable arrays that contain informationĪbout the sensors. The variable name that you want to assign to the sensor.Configuring sensors can beĬomplicated, to alleviate this ROBOTC has a built-in tool that can be
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There are a variety of functions and variables used for configuring Information The NXT is equipped with four sensor ports - S1, S2, S3, and S4.