Interrupts with RobotPy
 

I know interrupts work with RobotPy, since encoders and counters are covered.

How do I create an interrupt with RobotPy?

Say I have the ADIS16448 IMU that I would like to use the DataReady output for to call an ISR. And yes, I know what I'm doing probably won't work well. Python is probably too slow to handle real time interrupts.

Some example code would be great!

Thanks!

Re: Interrupts with RobotPy
 

Encoders and counters do not use interrupts. They are polled by the FPGA.

Re: Interrupts with RobotPy
 

What he said.

... I've never tried doing WPILib interrupts in python. They certainly won't do anything in the simulator, and chances are they *mostly* work on the real robot, but there are probably edge cases where you'll get a weird exception (this is how I2C/SPI was until I actually had some hardware to do testing with).

I would recommend finding some Java code and translating it into python, and then file bug reports on github when you find it doesn't work. :)

Re: Interrupts with RobotPy
 

I'll try to find some Java code then.

I'm guessing the FPGA has RTL for handling encoders and counters then. (It makes sense). I always forget the RoboRIO is half processor, half FPGA. I'm used to just processors. :)

The Java roborio library for the adis16448 uses interrupts for the same purpose you want.

Re: Interrupts with RobotPy
 

Yep. I figured that one out. :)

Thanks!