70 lines
3.1 KiB
Python
70 lines
3.1 KiB
Python
# Support for "dotstar" leds
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#
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# Copyright (C) 2019-2020 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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from . import bus
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BACKGROUND_PRIORITY_CLOCK = 0x7fffffff00000000
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class PrinterDotstar:
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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 a software spi bus
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ppins = self.printer.lookup_object('pins')
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data_pin_params = ppins.lookup_pin(config.get('data_pin'))
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clock_pin_params = ppins.lookup_pin(config.get('clock_pin'))
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mcu = data_pin_params['chip']
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if mcu is not clock_pin_params['chip']:
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raise config.error("Dotstar pins must be on same mcu")
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sw_spi_pins = (data_pin_params['pin'], data_pin_params['pin'],
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clock_pin_params['pin'])
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self.spi = bus.MCU_SPI(mcu, None, None, 0, 500000, sw_spi_pins)
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# Initial color
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self.chain_count = config.getint('chain_count', 1, minval=1)
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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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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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color_data = [0xff, blue, green, red] * self.chain_count
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self.color_data = [0, 0, 0, 0] + color_data + [0xff, 0xff, 0xff, 0xff]
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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 send_data(self, print_time=None):
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minclock = 0
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if print_time is not None:
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minclock = self.spi.get_mcu().print_time_to_clock(print_time)
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data = self.color_data
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for d in [data[i:i+20] for i in range(0, len(data), 20)]:
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self.spi.spi_send(d, 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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transmit = gcmd.get_int('TRANSMIT', 1)
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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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color_data = [0xff, blue, green, red]
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index = gcmd.get_int('INDEX', None, minval=1, maxval=self.chain_count)
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if index is not None:
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self.color_data[index*4:(index+1)*4] = color_data
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else:
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self.color_data[4:-4] = color_data * self.chain_count
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# Send command
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if transmit:
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toolhead = self.printer.lookup_object('toolhead')
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toolhead.register_lookahead_callback(self.send_data)
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def load_config_prefix(config):
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return PrinterDotstar(config)
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