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teemuatlut / TMC2130Stepper

Arduino library for Trinamic TMC2130 Stepper driver
MIT License
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no sg_result reading stealthChop mode #6

Closed musinou closed 7 years ago

musinou commented 7 years ago

With

TMC2130.begin(); TMC2130.SilentStepStick2130(600); TMC2130.sg_stall_value(16); TMC2130.diag1_stall(1); TMC2130.diag1_active_high(1); TMC2130.sg_filter(0); TMC2130.microsteps(256); TMC2130.stealth_amplitude(64); TMC2130.stealth_gradient(15); TMC2130.stealth_freq(0); TMC2130.stealth_autoscale(0); TMC2130.stealth_symmetric(0); TMC2130.standstill_mode(0);

if TMC2130.stealthChop(0); then Serial.println(TMC2130.sg_result(), DEC); works

but if TMC2130.stealthChop(1); then Serial.println(TMC2130.sg_result(), DEC); gives 0 all the time, even if sg_stall_value is ajusted differently

teemuatlut commented 7 years ago

StallGuard is not compatible with stealthChop. The datasheet has an explanation but basically it's a matter of current detection being different on stealthChop mode.

musinou commented 7 years ago

I thought it could be something like this, but could not find it in the datasheet. Thank you for your reply.