From 48801d85562176cc7c37ab0b405d8de91d5ddbfd Mon Sep 17 00:00:00 2001
From: Kjetil Orbekk <kj@orbekk.com>
Date: Sun, 10 Apr 2022 13:25:28 -0400
Subject: configure backlight on reviung41

---
 build.yaml              |  2 +-
 config/reviung41.conf   |  7 +++++++
 config/reviung41.keymap | 37 ++++++++++++++++++++++++++++++++++---
 3 files changed, 42 insertions(+), 4 deletions(-)

diff --git a/build.yaml b/build.yaml
index 869a360..7f0a3cc 100644
--- a/build.yaml
+++ b/build.yaml
@@ -14,5 +14,5 @@
 ---
 include:
   - board: planck_rev6
-  - board: nice_nano
+  - board: nice_nano_v2
     shield: reviung41
diff --git a/config/reviung41.conf b/config/reviung41.conf
index 827b9c6..b516c23 100644
--- a/config/reviung41.conf
+++ b/config/reviung41.conf
@@ -1,3 +1,10 @@
 # Uncomment the following lines to enable RGB underglow
 CONFIG_ZMK_RGB_UNDERGLOW=y
 CONFIG_WS2812_STRIP=y
+
+CONFIG_ZMK_RGB_UNDERGLOW_ON_START=y
+CONFIG_ZMK_RGB_UNDERGLOW_EFF_START=0
+CONFIG_ZMK_RGB_UNDERGLOW_SPD_START=1
+CONFIG_ZMK_RGB_UNDERGLOW_BRT_START=10
+CONFIG_ZMK_RGB_UNDERGLOW_SAT_START=10
+CONFIG_ZMK_RGB_UNDERGLOW_HUE_START=0
diff --git a/config/reviung41.keymap b/config/reviung41.keymap
index 12f4b8b..5566948 100644
--- a/config/reviung41.keymap
+++ b/config/reviung41.keymap
@@ -8,6 +8,37 @@
 #include <dt-bindings/zmk/keys.h>
 #include <dt-bindings/zmk/bt.h>
 #include <dt-bindings/zmk/rgb.h>
+#include <dt-bindings/led/led.h>
+
+&spi1 {
+	compatible = "nordic,nrf-spim";
+	status = "okay";
+	mosi-pin = <6>;
+	// Unused pins, needed for SPI definition, but not used by the ws2812 driver itself.
+	sck-pin = <5>;
+	miso-pin = <7>;
+
+	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 = <11>; /* 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;
+	};
+};
 
 #define QW     0
 #define DV     1
@@ -107,9 +138,9 @@
 
                 function_layer {
                         bindings = <
-&trans &kp F1      &kp F2  &kp F3 &kp F4     &kp F5 &kp F6 &kp F7     &kp F8 &kp F9 &kp F10 &trans
-&trans &kp F11     &kp F12 &trans &caps_word &trans &trans &caps_word &trans &trans &trans  &trans
-&trans &bootloader &trans  &trans &to DV     &to QW &bt BT_SEL 0 &bt BT_SEL 1 &bt BT_SEL 2 &bt BT_SEL 3 &bt BT_SEL 4 &bt BT_CLR
+&trans       &kp F1       &kp F2       &kp F3       &kp F4       &kp F5     &kp F6 &kp F7          &kp F8          &kp F9          &kp F10         &trans
+&trans       &kp F11      &kp F12      &trans       &to DV       &to QW     &trans &rgb_ug RGB_TOG &trans          &rgb_ug RGB_EFF &rgb_ug RGB_HUI &rgb_ug RGB_SAI &rgb_ug RGB_BRI
+&bt BT_SEL 0 &bt BT_SEL 1 &bt BT_SEL 2 &bt BT_SEL 3 &bt BT_SEL 4 &bt BT_CLR &trans &trans          &rgb_ug RGB_EFR &rgb_ug RGB_HUD &rgb_ug RGB_SAD &rgb_ug RGB_BRD
 
 &trans      &trans       &trans        &trans       &trans
                         >;
-- 
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