TMC260 Stepper Motor Driver Shield, Cannot Detect Stall

I'm having trouble detecting any change in the stall state reading off the board.
I'm using am Anaheim Automation 17Y101D-LW4 stepper motor.

I've tried pulling the return values of the following, and none of them change if I stall out the motor or let it run:
getStallGuardThreshold()
getStallGuardFilter()
getCurrentStallGuardReading()
getCurrentCSReading()
isStallGuardOverThreshold()
I am running in SPI mode, but the same lack of change occurs with step mode.
I have activated the stall guard threshold, and tried without, neither giving any change. Used a range from 1-200. ie:
setStallGuardThreshold(1,1)
setStallGuardThreshold(4,1)
setStallGuardThreshold(20,1)
setStallGuardThreshold(200,1)
setStallGuardThreshold(200,0)

What am I doing wrong here?
Does this feature even work?

Edit, Links to Documentation:
https://www.dfrobot.com/wiki/index.php/ ... U:_DRI0035#
https://www.anaheimautomation.com/manua ... 0Sheet.pdf