zmk: add screen to right half

firmware/zmk-config/boards/shields/phiboard/Kconfig.defconfig

@@ -8,6 +8,9 @@ config USB_DEVICE_MANUFACTURER
 config ZMK_SPLIT_ROLE_CENTRAL
     default y
 
+config ZMK_DISPLAY
+    default y
+
 endif
 
 # for Debugging purposes, should never advertise itself

firmware/zmk-config/boards/shields/phiboard/phiboard_right.overlay

@@ -3,6 +3,7 @@
 / {
     chosen {
         zmk,kscan = &kscan0;
+        zephyr,display = &oled_right;
     };
 
     kscan0: kscan_0 {
@@ -26,10 +27,33 @@
             , <&xiao_d 3 (GPIO_PULL_DOWN | GPIO_ACTIVE_HIGH)>
             ;
     };
-
 };
 
+
 &default_transform {
   col-offset = <5>;
 };
 
+
+&xiao_i2c {
+    status = "okay";
+
+    oled_right: ssd1306@3c {
+        status = "okay";
+
+        compatible = "solomon,ssd1306fb";
+        reg = <0x3c>;
+        width = <128>;
+        height = <80>;
+        segment-offset = <0>;
+        page-offset = <0>;
+        display-offset = <0>;
+        multiplex-ratio = <31>;
+        //segment-remap;
+        //com-invdir;
+        com-sequential;
+        inversion-on;
+        prechargep = <0x22>;
+    };
+};
+

firmware/zmk-config/phiboard.conf

@@ -10,3 +10,9 @@ CONFIG_EC11_TRIGGER_GLOBAL_THREAD=y
 # Debounce ?
 CONFIG_ZMK_KSCAN_DEBOUNCE_PRESS_MS=10
 CONFIG_ZMK_KSCAN_DEBOUNCE_RELEASE_MS=10
+
+
+
+CONFIG_ZMK_WIDGET_LAYER_STATUS=y
+CONFIG_ZMK_WIDGET_BATTERY_STATUS=y
+CONFIG_ZMK_WIDGET_OUTPUT_STATUS=y