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