add dongle

build.yaml

@@ -3,5 +3,7 @@ include:
     shield: ergonaut_one_left
   - board: seeeduino_xiao_ble
     shield: ergonaut_one_right
+  - board: seeeduino_xiao_ble
+    shield: ergonaut_one_dongle
   - board: seeeduino_xiao_ble
     shield: settings_reset

config/boards/shields/ergonaut_one/Kconfig.defconfig

@@ -1,19 +1,28 @@
 # Copyright (c) 2020 The ZMK Contributors
 # SPDX-License-Identifier: MIT
 
-if SHIELD_ERGONAUT_ONE_LEFT
+if SHIELD_ERGONAUT_ONE_DONGLE
 
 config ZMK_KEYBOARD_NAME
 	default "Ergonaut One"
 
 config ZMK_SPLIT_ROLE_CENTRAL
 	default y
 
+config USB_HID_POLL_INTERVAL_MS
+	default 1
+
+config ZMK_SPLIT_BLE_CENTRAL_PERIPHERALS
+	default 2
+
 endif
 
-if SHIELD_ERGONAUT_ONE_LEFT || SHIELD_ERGONAUT_ONE_RIGHT
+if SHIELD_ERGONAUT_ONE_LEFT || SHIELD_ERGONAUT_ONE_RIGHT || SHIELD_ERGONAUT_ONE_DONGLE
 
 config ZMK_SPLIT
 	default y
 
+config BT_PERIPHERAL_PREF_MAX_INT
+	default 6
+
 endif

config/boards/shields/ergonaut_one/Kconfig.shield

@@ -6,3 +6,6 @@ config SHIELD_ERGONAUT_ONE_LEFT
 
 config SHIELD_ERGONAUT_ONE_RIGHT
     def_bool $(shields_list_contains,ergonaut_one_right)
+
+config SHIELD_ERGONAUT_ONE_DONGLE
+    def_bool $(shields_list_contains,ergonaut_one_dongle)

config/boards/shields/ergonaut_one/ergonaut_one.zmk.yml

@@ -9,3 +9,4 @@ features:
 siblings:
   - ergonaut_one_left
   - ergonaut_one_right
+  - ergonaut_one_dongle

config/boards/shields/ergonaut_one/ergonaut_one_dongle.conf

@@ -0,0 +1,2 @@
+# Copyright (c) 2020 The ZMK Contributors
+# SPDX-License-Identifier: MIT

config/boards/shields/ergonaut_one/ergonaut_one_dongle.overlay

@@ -0,0 +1,7 @@
+/*
+ * Copyright (c) 2020 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include "ergonaut_one.dtsi"