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docs: Revise sensorless homing configuration guide

Browse source 
Recommend finding the minimum and maximum stallguard settings while
tuning sensorless homing.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2021-03-11 11:24:57 -05:00
parent ae89a65956
commit 5c2c43b05f
2 changed files with 256 additions and 125 deletions
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29
docs/Config_Reference.md
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@ -2650,10 +2650,11 @@ run_current:
#diag0_pin:
#diag1_pin:
# The micro-controller pin attached to one of the DIAG lines of the
# TMC2130 chip. Only a single diag pin should be specified.
# Setting this creates a "tmc2130_stepper_x:virtual_endstop" virtual
# pin which may be used as the stepper's endstop_pin. Doing this
# enables "sensorless homing". (Be sure to also set driver_SGT to an
# TMC2130 chip. Only a single diag pin should be specified. The pin
# is "active low" and is thus normally prefaced with "^!". Setting
# this creates a "tmc2130_stepper_x:virtual_endstop" virtual pin
# which may be used as the stepper's endstop_pin. Doing this enables
# "sensorless homing". (Be sure to also set driver_SGT to an
# appropriate sensitivity value.) The default is to not enable
# sensorless homing.
```
@ -2758,11 +2759,12 @@ run_current:
# above list.
#diag_pin:
# The micro-controller pin attached to the DIAG line of the TMC2209
# chip. Setting this creates a "tmc2209_stepper_x:virtual_endstop"
# virtual pin which may be used as the stepper's endstop_pin. Doing
# this enables "sensorless homing". (Be sure to also set
# driver_SGTHRS to an appropriate sensitivity value.) The default is
# to not enable sensorless homing.
# chip. The pin is normally prefaced with "^" to enable a pullup.
# Setting this creates a "tmc2209_stepper_x:virtual_endstop" virtual
# pin which may be used as the stepper's endstop_pin. Doing this
# enables "sensorless homing". (Be sure to also set driver_SGTHRS to
# an appropriate sensitivity value.) The default is to not enable
# sensorless homing.
```
## [tmc2660]
@ -2915,10 +2917,11 @@ run_current:
#diag0_pin:
#diag1_pin:
# The micro-controller pin attached to one of the DIAG lines of the
# TMC5160 chip. Only a single diag pin should be specified.
# Setting this creates a "tmc5160_stepper_x:virtual_endstop" virtual
# pin which may be used as the stepper's endstop_pin. Doing this
# enables "sensorless homing". (Be sure to also set driver_SGT to an
# TMC5160 chip. Only a single diag pin should be specified. The pin
# is "active low" and is thus normally prefaced with "^!". Setting
# this creates a "tmc5160_stepper_x:virtual_endstop" virtual pin
# which may be used as the stepper's endstop_pin. Doing this enables
# "sensorless homing". (Be sure to also set driver_SGT to an
# appropriate sensitivity value.) The default is to not enable
# sensorless homing.
```