3D-printing/klipper
1
0
Fork 0
mirror of https://github.com/Klipper3d/klipper.git synced 2025-07-22 06:04:03 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

stepper: Automatically detect and handle shared stepper enable lines

Browse source 
It's common for multiple steppers to use the same stepper enable
line.  Detect this and only create a single digital_out oid on the
micro-controller.

Also, prohibit any other pin from being used multiple times in the
config file.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2018-01-10 14:49:00 -05:00
parent 265b9097d5
commit df6528715e
3 changed files with 47 additions and 16 deletions
Download patch file Download diff file Expand all files Collapse all files

20
klippy/pins.py
View file

@ -1,6 +1,6 @@
# Pin name to pin number definitions
#
# Copyright (C) 2016,2017 Kevin O'Connor <kevin@koconnor.net>
# Copyright (C) 2016-2018 Kevin O'Connor <kevin@koconnor.net>
#
# This file may be distributed under the terms of the GNU GPLv3 license.
import re
@ -180,7 +180,8 @@ class PrinterPins:
error = error
def __init__(self):
self.chips = {}
def lookup_pin(self, pin_type, pin_desc):
self.active_pins = {}
def lookup_pin(self, pin_type, pin_desc, share_type=None):
can_invert = pin_type in ['stepper', 'endstop', 'digital_out', 'pwm']
can_pullup = pin_type == 'endstop'
pullup = invert = 0
@ -196,8 +197,19 @@ class PrinterPins:
chip_name, pin = [s.strip() for s in pin_desc.split(':', 1)]
if chip_name not in self.chips:
raise error("Unknown pin chip name '%s'" % (chip_name,))
return {'chip': self.chips[chip_name], 'chip_name': chip_name,
'type': pin_type, 'pin': pin, 'invert': invert, 'pullup': pullup}
share_name = "%s:%s" % (chip_name, pin)
if share_name in self.active_pins:
pin_params = self.active_pins[share_name]
if share_type is None or share_type != pin_params['share_type']:
raise error("pin %s used multiple times in config" % (pin,))
if invert != pin_params['invert'] or pullup != pin_params['pullup']:
raise error("Shared pin %s must have same polarity" % (pin,))
return pin_params
pin_params = {'chip': self.chips[chip_name], 'chip_name': chip_name,
'type': pin_type, 'share_type': share_type,
'pin': pin, 'invert': invert, 'pullup': pullup}
self.active_pins[share_name] = pin_params
return pin_params
def setup_pin(self, pin_type, pin_desc):
pin_params = self.lookup_pin(pin_type, pin_desc)
return pin_params['chip'].setup_pin(pin_params)