I am embarrassed to say I am using RobotC V 1.4 here, so maybe that is the problem, but I am just trying to do a quick project and not spend time on upgrading...
I'm just controlling a simple NXT vehicle with driving motors A and C and an arm motor B. The left and right joystick positions control the drive motors fine but only button 1 works, button 2 does not register at all in debug mode. I want button 1 to raise the arm and button 2 to lower it. I tried a couple other logic constructs and same thing, button 2 does not register, so I think it is a problem with how I am referencing the button. I think I am not understanding how to add another button so any help is appreciated.
Thanks!

Try removing the == 1 from your if-conditions.

So

becomes

etc

Ah, boolean, should have known!
Thank you, works now.

Unnecessary explanation:
Assuming ROBOTC 1.4 works the same as more recent versions, the reason is that joystick buttons are stored as bit fields (button 1 is stored in first bit, button 2 is stored in the second bit, etc). The joy1Btn function then selects out the appropriate button, like:



This means that joy1Btn(2) == 2 when button 2 is pushed; it's not equal to 1 (joy1Btn(3) would equal 4). Since in C, any non-zero number evaluates to true, you don't have to do the comparison.

Recent versions of ROBOTC produce more consistent behavior by changing the definition of joy1Btn slightly:



which produces a 1 when the button is pushed, regardless of the button.