From 1adf0c071e6cdff68c6a5a2c636316690a9672ff Mon Sep 17 00:00:00 2001
From: Max Litruv Boonzaayer <litruv@gmail.com>
Date: Tue, 30 Sep 2025 23:05:58 +1000
Subject: [PATCH] ec11 encoders

---
 boards/shields/sofle/sofle_dongle.overlay | 23 +++++++++++++++++++++++
 config/sofle_dongle.conf                  | 14 ++++++++------
 2 files changed, 31 insertions(+), 6 deletions(-)

diff --git a/boards/shields/sofle/sofle_dongle.overlay b/boards/shields/sofle/sofle_dongle.overlay
index 2647d6a..5f28904 100644
--- a/boards/shields/sofle/sofle_dongle.overlay
+++ b/boards/shields/sofle/sofle_dongle.overlay
@@ -18,6 +18,23 @@
         events = <0>;
     };
 
+    /* Rotary encoders (same logical wiring as halves; mark disabled until mapped to actual pins if needed) */
+    left_encoder: left_encoder {
+        compatible = "alps,ec11";
+        a-gpios = <&gpio0 21 (GPIO_ACTIVE_HIGH)>;
+        b-gpios = <&gpio0 20 (GPIO_ACTIVE_HIGH)>;
+        steps = <80>;
+        status = "okay";
+    };
+
+    right_encoder: right_encoder {
+        compatible = "alps,ec11";
+        a-gpios = <&gpio0 20 (GPIO_ACTIVE_HIGH)>;
+        b-gpios = <&gpio0 21 (GPIO_ACTIVE_HIGH)>;
+        steps = <80>;
+        status = "okay";
+    };
+
     default_transform: keymap_transform_0 {
         compatible = "zmk,matrix-transform";
         columns = <16>;
@@ -30,4 +47,10 @@
                             RC(4,0) RC(4,1) RC(4,2) RC(4,3) RC(4,4) RC(4,7) RC(4,8) RC(4,9) RC(4,10) RC(4,11)
         >;
     };
+    
+    sensors: sensors {
+        compatible = "zmk,keymap-sensors";
+        sensors = <&left_encoder &right_encoder>;
+        triggers-per-rotation = <20>;
+    };
 };
\ No newline at end of file
diff --git a/config/sofle_dongle.conf b/config/sofle_dongle.conf
index 3733a98..1610d15 100644
--- a/config/sofle_dongle.conf
+++ b/config/sofle_dongle.conf
@@ -1,18 +1,20 @@
 # Configuration for Sofle Dongle (Wireless Receiver)
-# Dongle doesn't have display or encoders
+# Acts as a central node; we want encoder events processed even if dongle has no physical encoders
+# (some firmware paths expect sensor count to match halves for behavior consistency)
 
-# Disable display for dongle
+# No local display
 CONFIG_ZMK_DISPLAY=n
 
-# Disable encoder for dongle
-CONFIG_EC11=n
+# Enable EC11 driver so encoder sensor behavior compiles & split forwarded events are handled
+CONFIG_EC11=y
+CONFIG_EC11_TRIGGER_GLOBAL_THREAD=y
 
-# Keep other settings
+# Power & Sleep
 CONFIG_ZMK_SLEEP=y
 CONFIG_ZMK_IDLE_SLEEP_TIMEOUT=3600000
 
 CONFIG_BT_CTLR_TX_PWR_PLUS_8=y 
 
-# Disable WPM widget since no display
+# No display widgets
 CONFIG_ZMK_WIDGET_WPM_STATUS=n
 CONFIG_ZMK_STUDIO=y
\ No newline at end of file