neopixel: Add support for setting a default color at startup

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

1 files changed, 14 insertions, 3 deletions

diff --git a/klippy/extras/neopixel.py b/klippy/extras/neopixel.py
index 9c9d4bee..5a2fdec5 100644
--- a/klippy/extras/neopixel.py
+++ b/klippy/extras/neopixel.py
@@ -17,6 +17,15 @@ class PrinterNeoPixel:
                                 % (self.oid, pin_params['pin']))
         self.mcu.register_config_callback(self.build_config)
         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.)
+        red = int(red * 255. + .5)
+        blue = int(blue * 255. + .5)
+        green = int(green * 255. + .5)
+        self.color_data = [green, red, 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_NEOPIXEL", "NEOPIXEL", name,
@@ -29,6 +38,9 @@ class PrinterNeoPixel:
         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 send_data(self, minclock=0):
+        self.neopixel_send_cmd.send([self.oid, self.color_data],
+                                    minclock=minclock)
     cmd_SET_NEOPIXEL_help = "Set the color of a neopixel led"
     def cmd_SET_NEOPIXEL(self, params):
         # Parse parameters
@@ -38,11 +50,10 @@ class PrinterNeoPixel:
         red = int(red * 255. + .5)
         blue = int(blue * 255. + .5)
         green = int(green * 255. + .5)
+        self.color_data = [green, red, blue]
         # Send command
         print_time = self.printer.lookup_object('toolhead').get_last_move_time()
-        minclock = self.mcu.print_time_to_clock(print_time)
-        self.neopixel_send_cmd.send([self.oid, [green, red, blue]],
-                                    minclock=minclock)
+        self.send_data(self.mcu.print_time_to_clock(print_time))
 
 def load_config_prefix(config):
     return PrinterNeoPixel(config)