75 lines
2.8 KiB
Python
75 lines
2.8 KiB
Python
# Support for the PCA9632 LED driver ic
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#
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# Copyright (C) 2022 Ricardo Alcantara <ricardo@vulcanolabs.com>
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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, mcp4018
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BACKGROUND_PRIORITY_CLOCK = 0x7fffffff00000000
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# Register addresses
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PCA9632_MODE1 = 0x00
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PCA9632_MODE2 = 0x01
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PCA9632_PWM0 = 0x02
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PCA9632_PWM1 = 0x03
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PCA9632_PWM2 = 0x04
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PCA9632_PWM3 = 0x05
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PCA9632_LEDOUT = 0x08
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LED_PWM = 0x02
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PCA9632_LED0 = 0x00
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PCA9632_LED1 = 0x02
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PCA9632_LED2 = 0x04
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PCA9632_LED3 = 0x06
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class PCA9632:
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def __init__(self, config):
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self.printer = printer = config.get_printer()
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if config.get("scl_pin", None) is not None:
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self.i2c = mcp4018.SoftwareI2C(config, 98)
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else:
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self.i2c = bus.MCU_I2C_from_config(config, default_addr=98)
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color_order = config.get("color_order", "RGBW")
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if sorted(color_order) != sorted("RGBW"):
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raise config.error("Invalid color_order '%s'" % (color_order,))
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self.color_map = ["RGBW".index(c) for c in color_order]
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self.prev_regs = {}
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pled = printer.load_object(config, "led")
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self.led_helper = pled.setup_helper(config, self.update_leds, 1)
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printer.register_event_handler("klippy:connect", self.handle_connect)
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def reg_write(self, reg, val, minclock=0):
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if self.prev_regs.get(reg) == val:
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return
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self.prev_regs[reg] = val
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self.i2c.i2c_write([reg, val], minclock=minclock,
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reqclock=BACKGROUND_PRIORITY_CLOCK)
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def handle_connect(self):
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#Configure MODE1
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self.reg_write(PCA9632_MODE1, 0x00)
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#Configure MODE2 (DIMMING, INVERT, CHANGE ON STOP,TOTEM)
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self.reg_write(PCA9632_MODE2, 0x15)
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self.update_leds(self.led_helper.get_status()['color_data'], None)
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def update_leds(self, led_state, print_time):
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minclock = 0
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if print_time is not None:
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minclock = self.i2c.get_mcu().print_time_to_clock(print_time)
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color = [int(v * 255. + .5) for v in led_state[0]]
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led0, led1, led2, led3 = [color[idx] for idx in self.color_map]
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self.reg_write(PCA9632_PWM0, led0, minclock=minclock)
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self.reg_write(PCA9632_PWM1, led1, minclock=minclock)
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self.reg_write(PCA9632_PWM2, led2, minclock=minclock)
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self.reg_write(PCA9632_PWM3, led3, minclock=minclock)
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LEDOUT = (LED_PWM << PCA9632_LED0 if led0 else 0)
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LEDOUT |= (LED_PWM << PCA9632_LED1 if led1 else 0)
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LEDOUT |= (LED_PWM << PCA9632_LED2 if led2 else 0)
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LEDOUT |= (LED_PWM << PCA9632_LED3 if led3 else 0)
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self.reg_write(PCA9632_LEDOUT, LEDOUT, minclock=minclock)
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def get_status(self, eventtime):
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return self.led_helper.get_status(eventtime)
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def load_config_prefix(config):
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return PCA9632(config)
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