fix(keymap): move the toggle layer logic to keymap.c

app/dts/behaviors/toggle_layer.dtsi

@@ -1,4 +1,10 @@
-/ {
+/*
+ * Copyright (c) 2020 Cody McGinnis <brainwart@gmail.com>
+ *
+ * SPDX-License-Identifier: MIT
+ */
+ 
+ / {
 	behaviors {
 		tog: behavior_toggle_layer {
 			compatible = "zmk,behavior-toggle-layer";

app/include/zmk/keymap.h

@@ -3,5 +3,6 @@
 bool zmk_keymap_layer_active(u8_t layer);
 int zmk_keymap_layer_activate(u8_t layer);
 int zmk_keymap_layer_deactivate(u8_t layer);
+int zmk_keymap_layer_toggle(u8_t layer);
 
 int zmk_keymap_position_state_changed(u32_t position, bool pressed);

app/src/behaviors/behavior_toggle_layer.c

@@ -25,12 +25,7 @@ static int behavior_tog_init(struct device *dev)
 
 static int tog_keymap_binding_pressed(struct device *dev, u32_t position, u32_t layer, u32_t _)
 {
-  LOG_DBG("position %d layer %d current %d", position, layer, zmk_keymap_layer_active(layer));
-
-  if (zmk_keymap_layer_active(layer))
-    return zmk_keymap_layer_deactivate(layer);
-
-  return zmk_keymap_layer_activate(layer);
+  return zmk_keymap_layer_toggle(layer);
 }
 
 static int tog_keymap_binding_released(struct device *dev, u32_t position, u32_t layer, u32_t _)

app/src/keymap.c

@@ -91,6 +91,14 @@ int zmk_keymap_layer_deactivate(u8_t layer)
 	SET_LAYER_STATE(layer, false);
 };
 
+int zmk_keymap_layer_toggle(u8_t layer)
+{
+	if (zmk_keymap_layer_active(layer))
+    	return zmk_keymap_layer_deactivate(layer);
+
+  	return zmk_keymap_layer_activate(layer);
+};
+
 bool is_active_position(u32_t position, u8_t layer)
 {
 	return (zmk_keymap_layer_state & BIT(layer)) == BIT(layer)