3D-printing/klipper
1
0
Fork 0
mirror of https://github.com/Klipper3d/klipper.git synced 2025-07-24 15:14:00 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

tmc: Add support for virtual enable pins

Browse source 
Add support for enabling the stepper via the communication channel.
This improves support for boards with a shared enable line.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2019-06-12 23:28:22 -04:00 • committed by KevinOConnor
parent 041831f93a
commit 7702f0a027
7 changed files with 67 additions and 18 deletions
Download patch file Download diff file Expand all files Collapse all files

40
klippy/extras/tmc.py
View file

@ -155,7 +155,7 @@ class TMCCommandHelper:
######################################################################
# TMC virtual endstops
# TMC virtual pins
######################################################################
# Endstop wrapper that enables "sensorless homing"
@ -187,8 +187,30 @@ class TMCVirtualEndstop:
self.mcu_tmc.set_register("TCOOLTHRS", 0)
self.mcu_endstop.home_finalize()
class TMCEndstopHelper:
def __init__(self, config, mcu_tmc, diag_pin):
# Digital output wrapper for virtual enable
class TMCVirtualEnable:
def __init__(self, printer, mcu_tmc):
self.reactor = printer.get_reactor()
self.mcu_tmc = mcu_tmc
self.fields = mcu_tmc.get_fields()
self.toff = self.fields.get_field("toff")
self.fields.set_field("toff", 0)
def setup_max_duration(self, max_duration):
pass
def _do_set_digital(self, print_time, value):
toff_val = 0
if value:
toff_val = self.toff
print_time -= 0.100 # Schedule slightly before deadline
val = self.fields.set_field("toff", toff_val)
reg_name = self.fields.lookup_register("toff")
self.mcu_tmc.set_register(reg_name, val, print_time)
def set_digital(self, print_time, value):
self.reactor.register_callback(
(lambda ev: self._do_set_digital(print_time, value)))
class TMCVirtualPinHelper:
def __init__(self, config, mcu_tmc, diag_pin=None):
self.printer = config.get_printer()
self.mcu_tmc = mcu_tmc
self.diag_pin = diag_pin
@ -197,12 +219,18 @@ class TMCEndstopHelper:
ppins.register_chip("%s_%s" % (name_parts[0], name_parts[-1]), self)
def setup_pin(self, pin_type, pin_params):
ppins = self.printer.lookup_object('pins')
if pin_params['pin'] not in ('virtual_endstop', 'virtual_enable'):
raise ppins.error("Unknown tmc virtual pin")
if pin_params['invert'] or pin_params['pullup']:
raise ppins.error("Can not pullup/invert tmc virtual pin")
if pin_params['pin'] == 'virtual_enable':
if pin_type != 'digital_out':
raise ppins.error("tmc virtual enable only useful for enable")
return TMCVirtualEnable(self.printer, self.mcu_tmc)
if self.diag_pin is None:
raise ppins.error("tmc virtual endstop requires diag pin config")
if pin_type != 'endstop' or pin_params['pin'] != 'virtual_endstop':
if pin_type != 'endstop':
raise ppins.error("tmc virtual endstop only useful as endstop")
if pin_params['invert'] or pin_params['pullup']:
raise ppins.error("Can not pullup/invert tmc virtual endstop")
mcu_endstop = ppins.setup_pin('endstop', self.diag_pin)
return TMCVirtualEndstop(self.mcu_tmc, mcu_endstop)