anchor.diff:  ====
   
   (u32 input) step_pin
  +[indent=4]
   ====
   I/O pin to use for the step output
   ====
   
   (u32 input) dir_pin
  +[indent=4]
   ====
   I/O pin to use for the direction output
   ====
   
   (bit input) stepinvert
  +[indent=4]
   ====
   Inverts the step output (normally high with pulses going low)
   ====
  
positive.code: ====
  
  (u32 input) pin
  ====
  I/O pin to use for the pwm output
  ====
  
negative.code: ====
  
  (u32 input) index-pin
  [indent=4]
  ====
  PRU direct input pin to use for the index (Z) signal
  ====
  