I am looking for some FPGA code that implements a complete (or near complete) Single Axis Stepper Motor Indexer function on a cRIO using an NI-9474 DO module.
For those that aren't familiar with the term "indexer", an indexer is a pulse generation subsystem that provides pulses to a stepper motor driver that in turn drives the windings on a stepper motor. Some vendors provide a combination indexer/driver units that are issued motion commands via a number of communications standards.
The FPGA indexer should:
Output pulses in the 1Hz-800KHz range.
Run the stepper at constant velocity continuously or for a fixed number of steps.
Implement an acceleration/deceleration ramp when changing velocity.
Implement clock-wise and counter-clock-wise limit switches.
I have some demo code provided from NI that proves to me that an FPGA indexer is feasible, I am looking for some examples of a more complete indexer.
