1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
# Support for PWM driven LEDs
#
# Copyright (C) 2019-2025 Kevin O'Connor <kevin@koconnor.net>
#
# This file may be distributed under the terms of the GNU GPLv3 license.
import logging
from . import output_pin
# Helper code for common LED initialization and control
class LEDHelper:
def __init__(self, config, update_func, led_count=1):
self.printer = config.get_printer()
self.update_func = update_func
self.led_count = led_count
self.need_transmit = False
# Initial color
red = config.getfloat("initial_RED", 0.0, minval=0.0, maxval=1.0)
green = config.getfloat("initial_GREEN", 0.0, minval=0.0, maxval=1.0)
blue = config.getfloat("initial_BLUE", 0.0, minval=0.0, maxval=1.0)
white = config.getfloat("initial_WHITE", 0.0, minval=0.0, maxval=1.0)
self.led_state = [(red, green, blue, white)] * led_count
# Support setting an led template
self.template_eval = output_pin.lookup_template_eval(config)
self.tcallbacks = [
(lambda text, s=self, index=i + 1: s._template_update(index, text))
for i in range(led_count)
]
# Register commands
name = config.get_name().split()[-1]
gcode = self.printer.lookup_object("gcode")
gcode.register_mux_command(
"SET_LED", "LED", name, self.cmd_SET_LED, desc=self.cmd_SET_LED_help
)
gcode.register_mux_command(
"SET_LED_TEMPLATE",
"LED",
name,
self.cmd_SET_LED_TEMPLATE,
desc=self.cmd_SET_LED_TEMPLATE_help,
)
def get_status(self, eventtime=None):
return {"color_data": self.led_state}
def _set_color(self, index, color):
if index is None:
new_led_state = [color] * self.led_count
if self.led_state == new_led_state:
return
else:
if self.led_state[index - 1] == color:
return
new_led_state = list(self.led_state)
new_led_state[index - 1] = color
self.led_state = new_led_state
self.need_transmit = True
def _template_update(self, index, text):
try:
parts = [max(0.0, min(1.0, float(f))) for f in text.split(",", 4)]
except ValueError as e:
logging.exception("led template render error")
parts = []
if len(parts) < 4:
parts += [0.0] * (4 - len(parts))
self._set_color(index, tuple(parts))
def _check_transmit(self, print_time=None):
if not self.need_transmit:
return
self.need_transmit = False
try:
self.update_func(self.led_state, print_time)
except self.printer.command_error as e:
logging.exception("led update transmit error")
cmd_SET_LED_help = "Set the color of an LED"
def cmd_SET_LED(self, gcmd):
# Parse parameters
red = gcmd.get_float("RED", 0.0, minval=0.0, maxval=1.0)
green = gcmd.get_float("GREEN", 0.0, minval=0.0, maxval=1.0)
blue = gcmd.get_float("BLUE", 0.0, minval=0.0, maxval=1.0)
white = gcmd.get_float("WHITE", 0.0, minval=0.0, maxval=1.0)
index = gcmd.get_int("INDEX", None, minval=1, maxval=self.led_count)
transmit = gcmd.get_int("TRANSMIT", 1)
sync = gcmd.get_int("SYNC", 1)
color = (red, green, blue, white)
# Update and transmit data
def lookahead_bgfunc(print_time):
self._set_color(index, color)
if transmit:
self._check_transmit(print_time)
if sync:
# Sync LED Update with print time and send
toolhead = self.printer.lookup_object("toolhead")
toolhead.register_lookahead_callback(lookahead_bgfunc)
else:
# Send update now (so as not to wake toolhead and reset idle_timeout)
lookahead_bgfunc(None)
cmd_SET_LED_TEMPLATE_help = "Assign a display_template to an LED"
def cmd_SET_LED_TEMPLATE(self, gcmd):
index = gcmd.get_int("INDEX", None, minval=1, maxval=self.led_count)
set_template = self.template_eval.set_template
if index is not None:
set_template(gcmd, self.tcallbacks[index - 1], self._check_transmit)
else:
for i in range(self.led_count):
set_template(gcmd, self.tcallbacks[i], self._check_transmit)
# Handler for PWM controlled LEDs
class PrinterPWMLED:
def __init__(self, config):
self.printer = printer = config.get_printer()
# Configure pwm pins
ppins = printer.lookup_object("pins")
max_duration = printer.lookup_object("mcu").max_nominal_duration()
cycle_time = config.getfloat(
"cycle_time", 0.010, above=0.0, maxval=max_duration
)
hardware_pwm = config.getboolean("hardware_pwm", False)
self.pins = []
for i, name in enumerate(("red", "green", "blue", "white")):
pin_name = config.get(name + "_pin", None)
if pin_name is None:
continue
mcu_pin = ppins.setup_pin("pwm", pin_name)
mcu_pin.setup_max_duration(0.0)
mcu_pin.setup_cycle_time(cycle_time, hardware_pwm)
self.pins.append((i, mcu_pin))
if not self.pins:
raise config.error(
"No LED pin definitions found in '%s'" % (config.get_name(),)
)
self.last_print_time = 0.0
# Initialize color data
self.led_helper = LEDHelper(config, self.update_leds, 1)
self.prev_color = color = self.led_helper.get_status()["color_data"][0]
for idx, mcu_pin in self.pins:
mcu_pin.setup_start_value(color[idx], 0.0)
def update_leds(self, led_state, print_time):
mcu = self.pins[0][1].get_mcu()
min_sched_time = mcu.min_schedule_time()
if print_time is None:
eventtime = self.printer.get_reactor().monotonic()
print_time = mcu.estimated_print_time(eventtime) + min_sched_time
print_time = max(print_time, self.last_print_time + min_sched_time)
color = led_state[0]
for idx, mcu_pin in self.pins:
if self.prev_color[idx] != color[idx]:
mcu_pin.set_pwm(print_time, color[idx])
self.last_print_time = print_time
self.prev_color = color
def get_status(self, eventtime=None):
return self.led_helper.get_status(eventtime)
def load_config_prefix(config):
return PrinterPWMLED(config)
|
