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# Code to configure miscellaneous chips
#
# Copyright (C) 2017,2018 Kevin O'Connor <kevin@koconnor.net>
#
# This file may be distributed under the terms of the GNU GPLv3 license.
PIN_MIN_TIME = 0.100
class PrinterOutputPin:
def __init__(self, config):
self.printer = config.get_printer()
ppins = self.printer.lookup_object('pins')
self.is_pwm = config.getboolean('pwm', False)
if self.is_pwm:
self.mcu_pin = ppins.setup_pin('pwm', config.get('pin'))
cycle_time = config.getfloat('cycle_time', 0.100, above=0.)
hardware_pwm = config.getboolean('hardware_pwm', False)
self.mcu_pin.setup_cycle_time(cycle_time, hardware_pwm)
self.scale = config.getfloat('scale', 1., above=0.)
else:
self.mcu_pin = ppins.setup_pin('digital_out', config.get('pin'))
self.scale = 1.
self.mcu_pin.setup_max_duration(0.)
self.last_value_time = 0.
static_value = config.getfloat('static_value', None,
minval=0., maxval=self.scale)
if static_value is not None:
self.is_static = True
self.last_value = static_value / self.scale
self.mcu_pin.setup_start_value(
self.last_value, self.last_value, True)
else:
self.is_static = False
self.last_value = config.getfloat(
'value', 0., minval=0., maxval=self.scale) / self.scale
shutdown_value = config.getfloat(
'shutdown_value', 0., minval=0., maxval=self.scale) / self.scale
self.mcu_pin.setup_start_value(self.last_value, shutdown_value)
self.gcode = self.printer.lookup_object('gcode')
self.gcode.register_command("SET_PIN", self.cmd_SET_PIN,
desc=self.cmd_SET_PIN_help)
cmd_SET_PIN_help = "Set the value of an output pin"
def cmd_SET_PIN(self, params):
pin_name = self.gcode.get_str('PIN', params)
pin = self.printer.lookup_object('output_pin ' + pin_name, None)
if pin is not self:
if pin is None:
raise self.gcode.error("Pin not configured")
return pin.cmd_SET_PIN(params)
if self.is_static:
raise self.gcode.error("Static pin can not be changed at run-time")
value = self.gcode.get_float('VALUE', params) / self.scale
if value == self.last_value:
return
print_time = self.printer.lookup_object('toolhead').get_last_move_time()
print_time = max(print_time, self.last_value_time + PIN_MIN_TIME)
if self.is_pwm:
if value < 0. or value > 1.:
raise self.gcode.error("Invalid pin value")
self.mcu_pin.set_pwm(print_time, value)
else:
if value not in [0., 1.]:
raise self.gcode.error("Invalid pin value")
self.mcu_pin.set_digital(print_time, value)
self.last_value = value
self.last_value_time = print_time
def load_config_prefix(config):
return PrinterOutputPin(config)
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