docs: Note change to neopixel/dotstar API status fields

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

2 files changed, 19 insertions, 10 deletions

diff --git a/docs/Config_Changes.md b/docs/Config_Changes.md
index b78a23be..587c06b0 100644
--- a/docs/Config_Changes.md
+++ b/docs/Config_Changes.md
@@ -8,6 +8,12 @@ All dates in this document are approximate.
 
 ## Changes
 
+20220330: The format of the `printer.neopixel.color_data` status
+information for neopixel and dotstar modules has changed. The
+information is now stored as a list of color lists (instead of a list
+of dictionaries). See the [status reference](Status_Reference.md#led)
+for details.
+
 20220307: `M73` will no longer set print progress to 0 if `P` is missing.
 
 20220304: There is no longer a default for the `extruder` parameter of
diff --git a/docs/Status_Reference.md b/docs/Status_Reference.md
index dfe6b805..aac6fec0 100644
--- a/docs/Status_Reference.md
+++ b/docs/Status_Reference.md
@@ -191,6 +191,19 @@ is always available):
   been in the "Printing" state (as tracked by the idle_timeout
   module).
 
+## led
+
+The following information is available for each `[led led_name]`,
+`[neopixel led_name]`, `[dotstar led_name]`, `[pca9533 led_name]`, and
+`[pca9632 led_name]` config section defined in printer.cfg:
+- `color_data`: A list of color lists containing the RGBW values for a
+  led in the chain. Each value is represented as a float from 0.0 to
+  1.0. Each color list contains 4 items (red, green, blue, white) even
+  if the underyling LED supports fewer color channels. For example,
+  the blue value (3rd item in color list) of the second neopixel in a
+  chain could be accessed at
+  `printer["neopixel <config_name>"].color_data[1][2]`.
+
 ## mcu
 
 The following information is available in
@@ -406,13 +419,3 @@ The following information is available in the `z_tilt` object (this
 object is available if z_tilt is defined):
 - `applied`: True if the z-tilt leveling process has been run and completed
   successfully.
-
-## neopixel / dotstar
-
-The following information is available for each `[neopixel led_name]` and
-`[dotstar led_name]` defined in printer.cfg:
-- `color_data`:  An array of objects, with each object containing the RGBW
-  values for a led in the chain.  Note that not all configurations will contain
-  a white value.  Each value is represented as a float from 0 to 1.  For
-  example, the blue value of the second neopixel in a chain could be accessed
-  at `printer["neopixel <config_name>"].color_data[1].B`.