Running the Motors Backward in WindRiver & cRIO Freezes

[kyungjin]

In order to fine-tune and test things, I was playing around with some of the motor control code and I kinda ran into this...

Jaguar1->Set(1.0);

This set of code worked and drove the motors forward at 100% power.

Jaguar1->Set(-1.0);

This set of code didn't work and whenever this function was called upon (I used buttons to control this), it would just ignore the code.


Also, for some reason, the cRIO sometimes locked up and froze, running the last set of processed instructions and refusing to run anymore. For example, I might be driving the bot's left wheels when the cRIO freezes. In that case, the cRIO refuses to take any other instructions and keeps powering the left wheels at the same speed until either the power is pulled or the Disable/Enable switch is toggled. I've reflashed this unit many times and tried tweaking the code, but nothing really worked. Anyone have the same problems or is this some kind of hardware defect?