feat: xiao dongle rgb, corne rgb fix: multiple xiao+promicro encoder def ref: CHANGELOG.txt for more...

boards/seeeduino_xiao_ble.overlay

@@ -0,0 +1,52 @@
+/*
+ref: For future reference, this pinout shows both pin numberings https://files.seeedstudio.com/wiki/XIAO-BLE/pinout2.png
+The &gpioX Y  and NRF_PSEL(..., X, Y) uses the PX.Y notation (underlying nRF pin numbers), &xiao_d x uses the unified pinout Dx
+*/
+#include <dt-bindings/led/led.h>
+
+&pinctrl {
+    spi0_default: spi0_default {
+        group1 {
+            psels = <NRF_PSEL(SPIM_MOSI, 0, 29)>;
+        };
+    };
+
+    spi0_sleep: spi0_sleep {
+        group1 {
+            psels = <NRF_PSEL(SPIM_MOSI, 0, 29)>;
+            low-power-enable;
+        };
+    };
+};
+
+&spi3 {
+    compatible = "nordic,nrf-spim";
+    status = "okay";
+
+    pinctrl-0 = <&spi0_default>;
+    pinctrl-1 = <&spi0_sleep>;
+    pinctrl-names = "default", "sleep";
+
+    led_strip: ws2812@0 {
+        compatible = "worldsemi,ws2812-spi";
+        // label = "WS2812";
+
+        /* SPI */
+        reg = <0>; /* ignored, but necessary for SPI bindings */
+        spi-max-frequency = <4000000>;
+
+        /* WS2812 */
+        chain-length = <27>; /* arbitrary; change at will */
+        spi-one-frame = <0x70>;
+        spi-zero-frame = <0x40>;
+
+        color-mapping = <LED_COLOR_ID_GREEN LED_COLOR_ID_RED LED_COLOR_ID_BLUE>;
+    };
+};
+
+/ {
+    chosen {
+        zmk,underglow = &led_strip;
+    };
+};
+// vim: filetype=dts fdm=marker: