VEXcode equivalent of get_proximity()

Programming Support VEXcode Pro V5 Text Tech Support
#1

I’m using the optical sensor in VEXcode and want to be able to check the proximity value. I know I can set the threshold value with another function, but does VEXCode have an equivalent of the get_proximity()

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#2

Try this:

Optical.isNearObject()

Documentation(s):

VEXcode API Refrence

Visual Studio Code Vex Command Help:

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I tried to find a function that gives you a range of values, but it seems that the optical sensor is only capable of basic object detection (non-continuous), if this is the problem for you, maybe consider using a Distance sensor instead.

#3

We’ve already used that function. I’m more interested in seeing what values it uses for the proximity and what changing the threshold actually represents

#4

You will have to use the C API, there’s no C++ member function to access proximity.

// define your global instances of motors and other devices here
vex::optical     op1(PORT10);

int main() {
    int32_t value = vexOpticalProximityGet( op1.index() );

    while(1) {
        // Allow other tasks to run
        this_thread::sleep_for(10);
    }
}
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#5

Thanks, that’s perfect! Is there a reason there’s no C++ member function?

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#6

idk, probably just not part of the spec when we wrote the C++ class or perhaps as it is a replacement for the legacy color sensor on IQ and there was no method to read proximity on that one. There are probably quite a few C functions that do not necessarily have a C++ equivalent.

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#7

Nice! I wasn’t aware of this. I will keep this in mind :+1: