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# Support for "neopixel" leds
#
# Copyright (C) 2019 Kevin O'Connor <kevin@koconnor.net>
#
# This file may be distributed under the terms of the GNU GPLv3 license.
BACKGROUND_PRIORITY_CLOCK = 0x7fffffff00000000
BIT_MAX_TIME=.000004
RESET_MIN_TIME=.000050
class PrinterNeoPixel:
def __init__(self, config):
self.printer = config.get_printer()
name = config.get_name().split()[1]
# Configure neopixel
ppins = self.printer.lookup_object('pins')
pin_params = ppins.lookup_pin(config.get('pin'))
self.mcu = pin_params['chip']
self.oid = self.mcu.create_oid()
self.pin = pin_params['pin']
self.mcu.register_config_callback(self.build_config)
self.color_order_GRB = config.getboolean("color_order_GRB", True)
self.chain_count = config.getint('chain_count', 1, minval=1, maxval=18)
self.neopixel_send_cmd = None
# Initial color
red = config.getfloat('initial_RED', 0., minval=0., maxval=1.)
green = config.getfloat('initial_GREEN', 0., minval=0., maxval=1.)
blue = config.getfloat('initial_BLUE', 0., minval=0., maxval=1.)
self.update_color_data(red, green, blue)
self.printer.register_event_handler("klippy:connect", self.send_data)
# Register commands
self.gcode = self.printer.lookup_object('gcode')
self.gcode.register_mux_command("SET_LED", "LED", name,
self.cmd_SET_LED,
desc=self.cmd_SET_LED_help)
def build_config(self):
bmt = self.mcu.seconds_to_clock(BIT_MAX_TIME)
rmt = self.mcu.seconds_to_clock(RESET_MIN_TIME)
self.mcu.add_config_cmd("config_neopixel oid=%d pin=%s"
" bit_max_ticks=%d reset_min_ticks=%d"
% (self.oid, self.pin, bmt, rmt))
cmd_queue = self.mcu.alloc_command_queue()
self.neopixel_send_cmd = self.mcu.lookup_command(
"neopixel_send oid=%c data=%*s", cq=cmd_queue)
def update_color_data(self, red, green, blue, index=None):
red = int(red * 255. + .5)
blue = int(blue * 255. + .5)
green = int(green * 255. + .5)
if self.color_order_GRB:
color_data = [green, red, blue]
else:
color_data = [red, green, blue]
if index is None:
self.color_data = color_data * self.chain_count
else:
self.color_data[(index-1)*3:index*3] = color_data
def send_data(self, minclock=0):
self.neopixel_send_cmd.send([self.oid, self.color_data],
minclock=minclock,
reqclock=BACKGROUND_PRIORITY_CLOCK)
cmd_SET_LED_help = "Set the color of an LED"
def cmd_SET_LED(self, params):
# Parse parameters
red = self.gcode.get_float('RED', params, 0., minval=0., maxval=1.)
green = self.gcode.get_float('GREEN', params, 0., minval=0., maxval=1.)
blue = self.gcode.get_float('BLUE', params, 0., minval=0., maxval=1.)
index = self.gcode.get_int('INDEX', params, None,
minval=1, maxval=self.chain_count)
transmit = self.gcode.get_int('TRANSMIT', params, 1)
self.update_color_data(red, green, blue, index)
# Send command
if not transmit:
return
print_time = self.printer.lookup_object('toolhead').get_last_move_time()
self.send_data(self.mcu.print_time_to_clock(print_time))
def load_config_prefix(config):
return PrinterNeoPixel(config)
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