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| author | Kevin O'Connor <kevin@koconnor.net> | 2021-11-29 16:41:48 -0500 |
|---|---|---|
| committer | Kevin O'Connor <kevin@koconnor.net> | 2021-11-29 16:56:29 -0500 |
| commit | 520273e5abfd9a3dd899f94b5df602669b655ec0 (patch) | |
| tree | 7b23ace366f9931704199e2584ecbc4809167b7e /docs | |
| parent | 54acca37ba642e8af4aeb9bdc6b538a639eb0320 (diff) | |
| download | kutter-520273e5abfd9a3dd899f94b5df602669b655ec0.tar.gz kutter-520273e5abfd9a3dd899f94b5df602669b655ec0.tar.xz kutter-520273e5abfd9a3dd899f94b5df602669b655ec0.zip | |
stepper: Support step_pulse_duration even on TMC drivers in UART/SPI mode
Commit 689231df changed the default step_pulse_duration to 100ns for
TMC drivers that are configured in UART/SPI mode, but it failed to
document that change in Config_Changes.md and Config_Reference.md.
Update those documents to reflect that change.
Update the code so that a user may specify a custom
step_pulse_duration even on TMC drivers that are configured in
UART/SPI mode. This may be useful for drivers that use a level
shifter on the step pin that requires more than a ~300ns to detect a
level change.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/Config_Changes.md | 7 | ||||
| -rw-r--r-- | docs/Config_Reference.md | 4 |
2 files changed, 7 insertions, 4 deletions
diff --git a/docs/Config_Changes.md b/docs/Config_Changes.md index e91ff465..11447d4d 100644 --- a/docs/Config_Changes.md +++ b/docs/Config_Changes.md @@ -16,9 +16,10 @@ use the older (typically less accurate) definition, define a custom `resistance1: 100000`, and `beta: 3950`. 20211104: The "step pulse duration" option in "make menuconfig" has -been removed. A new `step_pulse_duration` setting in the -[stepper config section](Config_Reference.md#stepper) should be set -for all steppers that need a custom pulse duration. +been removed. The default step duration for TMC drivers configured in +UART or SPI mode is now 100ns. A new `step_pulse_duration` setting in +the [stepper config section](Config_Reference.md#stepper) should be +set for all steppers that need a custom pulse duration. 20211102: Several deprecated features have been removed. The stepper `step_distance` option has been removed (deprecated on 20201222). The diff --git a/docs/Config_Reference.md b/docs/Config_Reference.md index 67d8d036..36302664 100644 --- a/docs/Config_Reference.md +++ b/docs/Config_Reference.md @@ -157,7 +157,9 @@ microsteps: # The minimum time between the step pulse signal edge and the # following "unstep" signal edge. This is also used to set the # minimum time between a step pulse and a direction change signal. -# The default is 0.000002 (which is 2us). +# The default is 0.000000100 (100ns) for TMC steppers that are +# configured in UART or SPI mode, and the default is 0.000002 (which +# is 2us) for all other steppers. endstop_pin: # Endstop switch detection pin. If this endstop pin is on a # different mcu than the stepper motor then it enables "multi-mcu |