Hi, I am fiddeling around with my TMC2130 stepper drivers. I use the newly implemented support in marlin for these drivers with SPI interface. Now, I want to use them in spreadcycle mode. But when I do so I always get a chirping sound from the copper. I measured it with approx. 8kHz. This is way in the audible range. Trinamic itself suggests to use a chopper frequency between 20kHz and 50kHz. This is done by modifing the off_time by register. With the internal clock of 12MHz used by these boards a register value of 3 or 4 would by good. My question is, is there a way to modify the programmed value to the stepper drivers in marlin?
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