Docs for M150 S

MarlinFirmware/Marlin#19115
MarlinFirmware/Marlin#23066

_configuration/configuration.md

@@ -1979,7 +1979,7 @@ Adds the [`M150`](/docs/gcode/M150.html) command to set the LED (or LED strip) c
 LED Strips require a MOFSET Chip between PWM lines and LEDs, as the Arduino cannot handle the current the LEDs will require. Failure to follow this precaution can destroy your Arduino!
 {% endalert %}
 
-#### Adafruit Neopixel LED Driver
+#### Adafruit NeoPixel LED Driver
 ```cpp
 //#define NEOPIXEL_LED
 #if ENABLED(NEOPIXEL_LED)
@@ -2366,7 +2366,7 @@ This feature allows you to digitally multiplex the fan output. The multiplexer i
   //#define CASE_LIGHT_MAX_PWM 128            // Limit pwm
   //#define CASE_LIGHT_MENU                   // Add Case Light options to the LCD menu
   //#define CASE_LIGHT_NO_BRIGHTNESS          // Disable brightness control. Enable for non-PWM lighting.
-  //#define CASE_LIGHT_USE_NEOPIXEL           // Use Neopixel LED as case light, requires NEOPIXEL_LED.
+  //#define CASE_LIGHT_USE_NEOPIXEL           // Use NeoPixel LED as case light, requires NEOPIXEL_LED.
   #if ENABLED(CASE_LIGHT_USE_NEOPIXEL)
     #define CASE_LIGHT_NEOPIXEL_COLOR { 255, 255, 255, 255 } // { Red, Green, Blue, White }
   #endif

_gcode/M150.md

@@ -47,6 +47,7 @@ parameters:
   -
     tag: P
     optional: true
+    requires: NEOPIXEL_LED
     description: Brightness from 0 to 255 (Requires `NEOPIXEL_LED`)
     values:
       -
@@ -56,22 +57,36 @@ parameters:
     tag: I
     since: 2.0.6
     optional: true
-    description: Index from 0 to n (Requires `NEOPIXEL_LED`)
+    requires: NEOPIXEL_LED
+    description: NeoPixel pixel index (0 .. pixels-1) (Requires `NEOPIXEL_LED`)
     values:
       -
-        tag: index
+        tag: pixel
+        type: int
+  -
+    tag: S
+    since: 2.0.6.1
+    optional: true
+    requires: NEOPIXEL2_SEPARATE
+    description: NeoPixel strip index (0 or 1) (Requires `NEOPIXEL2_SEPARATE`)
+    values:
+      -
+        tag: strip
         type: int
 
 examples:
   -
-    pre: Set Leds to blue brightness 30
+    pre: Set LEDs to blue with brightness 30
     code: M150 B30
   -
-    pre: Set Neopixel 0 to red brightness 100
+    pre: Set NeoPixel 0 to red with brightness 100
     code: M150 R100 I0
   -
-    pre: Set Neopixel 1 to green brightness 45
+    pre: Set NeoPixel 1 to green with brightness 45
     code: M150 U45 I1
+  -
+    pre: Set the second NeoPixel strip full white
+    code: M150 W255 S1
 
 ---
 

_gcode/M256.md

@@ -10,7 +10,7 @@ since: 2.0.9.2
 
 codes: [ M256 ]
 
-notes: Requires an LCD controller with software-controlled brightness. This may be extended in the future to work with a Neopixel or RGB LED backlight.
+notes: Requires an LCD controller with software-controlled brightness. This may be extended in the future to work with a NeoPixel or RGB LED backlight.
 
 parameters:
   -