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XBox controller
Hello!
First of all, let it be said that I am new to robot programming. What I have been trying to do is modify the code below to utilize an xBox 360 controller. I have literally gone through every forum entry with the keyword "xBox" which resulted in nothing more than being lead to other entries and dead links to websites. I have already installed the drivers and tried treating the controller as a typical joystick. If anyone could Help, I would greatly appreciate it! Thanks! Code:
#include <WPILib.h> |
Re: XBox controller
I haven't used an Xbox controller, nor do I use C++, but here's how I would attack the problem of getting any joystick or controller to work.
First I would make sure the controller is being recognized by the driver station software. It should show up on the setup tab as a joystick. When you press a button on the controller, the controller should change color in the joystick list. If it isn't detected or doesn't detect button presses, the problem is likely with your driver. Second, I would modify your robot code to print the values of each axis and button. From there, you can see which button and stick on the controller are mapped to what axis and button in the code. From there, it should be very simple to make your code use the appropriate axis and buttons. For example, passing the joystick object to Arcade drive makes some assumptions about axis mappings that may not apply to the xBox controller. You might need to change to one of the other methods that allows you to specify specific axes, or read the appropriate axes yourself and pass them to the arcade drive method that takes numeric inputs. |
Re: XBox controller
My team used Xbox 360 controllers last year. In our code, we used Joystick.GetRawAxis() and tied it to a float. When we called RobotDrive.ArcadeDrive(), we handed it our floats.
Code:
float driverLeftY = driverXbox.GetRawAxis(2);If you're having trouble with any of the button or axis setups, this should help. |
Re: XBox controller
I had tried an xBox controller once, and had poor experiences with it.
I could not: 1. Get the left joystick Y axis value 2. Independently access the analog triggers I had subclassed it and used the Joystick.GetRawAxis() functions. Everything else worked, but I couldn't get those things out of it. Then again, that was my experience. If you wanted it to work, you should use the GetRawAxis(x) functions as said before. Lets say you setup everything like you had before and plugged the xBox controller in as the first controller. Here is what you would write: Code:
void Autonomous(void) |
Re: XBox controller
So does that mean we don't vave to use
Code:
leftStick = new Joystick(1); |
Re: XBox controller
I went to a workshop with the Green Machine and they said that anyone could use their code as a reference, so here it is.
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Re: XBox controller
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Toa, our reasoning for using the floats was a double whammy type deal; we added a small deadband to the controller by keeping an eye on the values. We were aware of the issue that the robot could potentially move without a human interacting with the controller due to the minuscule difference between 0 (dead stop) and .25 (moving) on the xbox controllers. This also solved the issue with GetRawAxis() freaking out in the main loop. |
Re: XBox controller
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Re: XBox controller
I haven't been back to this thread in a while, so I haven't had a chance to say THANK YOU ALL SO MUCH! I really appreciate it! I just had a few more questions...
THe code provided by Toa works, but I had a few questions about how exactly it works. It only references Code:
leftStick->GetRawAxis(1), leftStick->GetRawAxis(2)Code:
rightStick = new Joystick(2); |
Re: XBox controller
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Re: XBox controller
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We can look at it again and re-evaluate the need, but it worked for us. |
Re: XBox controller
Hey CD! I've had an epiphany! XBox is actually spelled xBox, just like Ipod is actually spelled iPod! I've taken into consideration all the information I received from this thread and the example code, and have constructed this:
Code:
#include <WPILib.h> |
Re: XBox controller
Hello
i was wondering if anyone had figured out how to implement tank drive with an Xbox controller? Our team has gotten one joystick to work (using basically the code that's already here), but not both. One of our members who formerly programmed in LabView said that one of the Joysticks is recognized as a joystick and the other is recognized as a button (somehow). Is there some way to do this? Thanks! |
Re: XBox controller
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Ex. Code:
public OI() { Code:
// Axis indexes:I would recommend the Logitech F310 instead, as both thumbsticks are at the same elevation, and the sticks themselves are more accurate (much less deadzone). |
Re: XBox controller
No, the labview code works in the same way. One joystick, with 6 axis and 10-ish buttons. Maybe he was thinking in the was the triggers work? (They're an axis, with the left trigger -1 and the right trigger +1. Both triggers are 0).
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