I am having a problem using the DRV8711 stepper motor driver chip, on your stepper driver booster pack. The system works fine for full and half steps but the micro-stepping is not working correctly. What is happening is that if I set up the system for say 1/16th of a step I have to send the step command 16 times for it to take the 1/16th step, then the 1/16th step immediately after works on the first try. It follows this pattern pretty closely and acts the same for all of the other micro-stepping sizes: for ¼ its 3 or 4, for 1/8 its 7 or 8, for 64 its close to 64, etc.
I am certain that I am talking to the driver correctly seeing as the full and half steps work correctly and I am well within all the timing parameters given for communication by the datasheet.
Please assist.