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I'm trying to create a function that allows me to more easily start a motor, but I'm running into a problem, I don't know the type to use for the motorName argument. I'm using a VEX 269 Motor. Here's the function.

void runMotor(MotorTypeHere motorName, int speed, int time)
{
  startMotor(motorName, speed);
  wait(time);
}

I just don't know what type to put for the motorName argument. What type would it be?

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    $\begingroup$ I am pretty sure it is a string, try that. $\endgroup$
    – Mark Omo
    Apr 27, 2015 at 16:43
  • $\begingroup$ they are more likely just ints, with each of the ports defined in a header somewhere. $\endgroup$
    – Octopus
    Apr 28, 2015 at 21:59

1 Answer 1

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Looking at some of the docs I see that the startMotor function usually takes values like portN as in:

startMotor(port8,-32);
startMotor(port9,128);

and I am also seeing that some code looks like this:

motor[port8] = -32;
motor[port9] = 128;

so that tells me that since it is an index into an array it must be just simply an int.

Update: I can see on this page that within VEX it is actually a variable of type tMotor. But it can't work as an index in C unless tMotor is an alias for some sort of int. Ultimately, the best choice would be to use tMotor in your code.

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  • $\begingroup$ Have you confirmed this? $\endgroup$
    – Ethan Bierlein
    Apr 28, 2015 at 22:55
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    $\begingroup$ I found more info from a page I found for the ROBOTC language and added it to my answer. $\endgroup$
    – Octopus
    Apr 29, 2015 at 18:18

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