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Add slew rate of 400V/μs to TMC2240 for better cooling. #3

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Add slew rate of 400V/μs to TMC2240 for better cooling. #3

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c21843e
Add slew rate of 400V/μs to TMC2240 for better cooling.
The-Monkey-King Apr 12, 2026
3272181
Add slope_control setting for stepper_x and stepper_y
The-Monkey-King Apr 12, 2026
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10 changes: 8 additions & 2 deletions klippy/extras/tmc2240.py
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Original file line number Diff line number Diff line change
Expand Up @@ -58,8 +58,9 @@
ReadRegisters = [
"GCONF", "GSTAT", "IOIN", "DRV_CONF", "GLOBALSCALER", "IHOLD_IRUN",
"TPOWERDOWN", "TSTEP", "TPWMTHRS", "TCOOLTHRS", "THIGH", "ADC_VSUPPLY_AIN",
"ADC_TEMP", "MSCNT", "MSCURACT", "CHOPCONF", "COOLCONF", "DRV_STATUS",
"PWMCONF", "PWM_SCALE", "PWM_AUTO", "SG4_THRS", "SG4_RESULT", "SG4_IND"
"ADC_TEMP", "OTW_OV_VTH", "MSCNT", "MSCURACT", "CHOPCONF", "COOLCONF",
"DRV_STATUS", "PWMCONF", "PWM_SCALE", "PWM_AUTO", "SG4_THRS", "SG4_RESULT",
"SG4_IND"
]

Fields = {}
Expand Down Expand Up @@ -261,6 +262,9 @@
"adc_temp": (lambda v: "0x%04x(%.1fC)" % (v, ((v - 2038) / 7.7))),
"adc_vsupply": (lambda v: "0x%04x(%.3fV)" % (v, v * 0.009732)),
"adc_ain": (lambda v: "0x%04x(%.3fmV)" % (v, v * 0.3052)),
"overvoltage_vth": (lambda v: "0x%04x(%.3fV)" % (v, v * 0.009732)),
"overtempprewarning_vth": (lambda v:
"0x%04x(%.1fC)" % (v, ((v - 2038) / 7.7))),
})


Expand Down Expand Up @@ -409,6 +413,8 @@ def __init__(self, config):
set_config_field(config, "tpowerdown", 10)
# SG4_THRS
set_config_field(config, "sg4_angle_offset", 1)
# DRV_CONF
set_config_field(config, "slope_control", 2)

def load_config_prefix(config):
return TMC2240(config)
2 changes: 2 additions & 0 deletions lava/printer.cfg
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Expand Up @@ -152,6 +152,7 @@ homing_retract_dist: 10
second_homing_speed: 40
homing_tolerance_retries: 10
homing_backoff_dist: 5
SET_TMC_FIELD STEPPER=stepper_x FIELD=slope_control VALUE=2

[stepper_y]
step_pin: PD2
Expand All @@ -173,6 +174,7 @@ homing_retract_dist: 10
second_homing_speed: 40
homing_tolerance_retries: 10
homing_backoff_dist: 5
SET_TMC_FIELD STEPPER=stepper_x FIELD=slope_control VALUE=2

[stepper_z]
step_pin: PE7
Expand Down