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# Support for "dotstar" leds
#
# Copyright (C) 2019 Kevin O'Connor <kevin@koconnor.net>
#
# This file may be distributed under the terms of the GNU GPLv3 license.
import bus
class PrinterDotstar:
def __init__(self, config):
self.printer = config.get_printer()
name = config.get_name().split()[1]
# Configure a software spi bus
ppins = self.printer.lookup_object('pins')
data_pin_params = ppins.lookup_pin(config.get('data_pin'))
clock_pin_params = ppins.lookup_pin(config.get('clock_pin'))
mcu = data_pin_params['chip']
if mcu is not clock_pin_params['chip']:
raise config.error("Dotstar pins must be on same mcu")
sw_spi_pins = (data_pin_params['pin'], data_pin_params['pin'],
clock_pin_params['pin'])
self.spi = bus.MCU_SPI(mcu, None, None, 0, 500000, sw_spi_pins)
# Initial color
self.chain_count = config.getint('chain_count', 1, minval=1, maxval=12)
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.)
red = int(red * 255. + .5)
blue = int(blue * 255. + .5)
green = int(green * 255. + .5)
color_data = [0xff, blue, green, red] * self.chain_count
self.color_data = [0, 0, 0, 0] + color_data + [0xff, 0xff, 0xff, 0xff]
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 send_data(self, minclock=0):
self.spi.spi_send(self.color_data, minclock=minclock, reqclock=minclock)
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.)
red = int(red * 255. + .5)
blue = int(blue * 255. + .5)
green = int(green * 255. + .5)
color_data = [0xff, blue, green, red]
if 'INDEX' in params:
index = self.gcode.get_int('INDEX', params,
minval=1, maxval=self.chain_count)
self.color_data[index*4:(index+1)*4] = color_data
else:
self.color_data[4:-4] = color_data * self.chain_count
# Send command
print_time = self.printer.lookup_object('toolhead').get_last_move_time()
self.send_data(self.spi.get_mcu().print_time_to_clock(print_time))
def load_config_prefix(config):
return PrinterDotstar(config)
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