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tmc: Track requested hold_current so SET_TMC_CURRENT doesn't reduce it

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The code automatically reduces the hold_current so that it is no
greater than the run_current.  However, this could lead to confusing
behavior if one reduced and then increased the run_current via
SET_TMC_CURRENT commands.  To avoid that, this change adds support for
tracking the requested hold_current - thus changes to run_current
don't subtly alter the hold_current.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2021-10-24 20:03:42 -04:00
parent 627c1c5d2a
commit 86fee2d517
5 changed files with 20 additions and 17 deletions
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2
klippy/extras/tmc2660.py
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@ -169,7 +169,7 @@ class TMC2660CurrentHelper:
self.mcu_tmc.set_register("DRVCONF", val, print_time)
def get_current(self):
return self.current, None, MAX_CURRENT
return self.current, None, None, MAX_CURRENT
def set_current(self, run_current, hold_current, print_time):
self.current = run_current