feature(split): behavior locality support.

* GATT characteristic allowing passng data + behavior
  label to invoke the behavior on the peripheral side.
* Behaviors have a locality setting to specify where they run.
* Build reset/power/RGB on peripheral.

1 files changed, 52 insertions, 9 deletions

diff --git a/app/src/keymap.c b/app/src/keymap.c
index 1643f64..16ec316 100644
--- a/app/src/keymap.c
+++ b/app/src/keymap.c
@@ -4,7 +4,12 @@
  * SPDX-License-Identifier: MIT
  */
 
+#define IS_BLE_CENTRAL                                                                             \
+    (IS_ENABLED(CONFIG_ZMK_SPLIT) && IS_ENABLED(CONFIG_ZMK_BLE) &&                                 \
+     IS_ENABLED(CONFIG_ZMK_SPLIT_BLE_ROLE_CENTRAL))
+
 #include <sys/util.h>
+#include <bluetooth/bluetooth.h>
 #include <logging/log.h>
 LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL);
 
@@ -14,6 +19,10 @@ LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL);
 #include <drivers/behavior.h>
 #include <zmk/behavior.h>
 
+#if IS_BLE_CENTRAL
+#include <zmk/split/bluetooth/central.h>
+#endif
+
 #include <zmk/event_manager.h>
 #include <zmk/events/position_state_changed.h>
 #include <zmk/events/layer_state_changed.h>
@@ -152,7 +161,17 @@ const char *zmk_keymap_layer_label(uint8_t layer) {
     return zmk_keymap_layer_names[layer];
 }
 
-int zmk_keymap_apply_position_state(int layer, uint32_t position, bool pressed, int64_t timestamp) {
+int invoke_locally(struct zmk_behavior_binding *binding, struct zmk_behavior_binding_event event,
+                   bool pressed) {
+    if (pressed) {
+        return behavior_keymap_binding_pressed(binding, event);
+    } else {
+        return behavior_keymap_binding_released(binding, event);
+    }
+}
+
+int zmk_keymap_apply_position_state(zmk_position_state_changed_source_t source, int layer,
+                                    uint32_t position, bool pressed, int64_t timestamp) {
     // We want to make a copy of this, since it may be converted from
     // relative to absolute before being invoked
     struct zmk_behavior_binding binding = zmk_keymap[layer][position];
@@ -169,7 +188,7 @@ int zmk_keymap_apply_position_state(int layer, uint32_t position, bool pressed,
     behavior = device_get_binding(binding.behavior_dev);
 
     if (!behavior) {
-        LOG_DBG("No behavior assigned to %d on layer %d", position, layer);
+        LOG_WRN("No behavior assigned to %d on layer %d", position, layer);
         return 1;
     }
 
@@ -179,20 +198,44 @@ int zmk_keymap_apply_position_state(int layer, uint32_t position, bool pressed,
         return err;
     }
 
-    if (pressed) {
-        return behavior_keymap_binding_pressed(&binding, event);
-    } else {
-        return behavior_keymap_binding_released(&binding, event);
+    enum behavior_locality locality = BEHAVIOR_LOCALITY_CENTRAL;
+    err = behavior_get_locality(behavior, &locality);
+    if (err) {
+        LOG_ERR("Failed to get behavior locality %d", err);
+        return err;
+    }
+
+    switch (locality) {
+    case BEHAVIOR_LOCALITY_CENTRAL:
+        return invoke_locally(&binding, event, pressed);
+    case BEHAVIOR_LOCALITY_EVENT_SOURCE:
+#if IS_BLE_CENTRAL
+        if (!bt_addr_le_cmp(source, BT_ADDR_LE_NONE)) {
+            return invoke_locally(&binding, event, pressed);
+        } else {
+            return zmk_split_bt_invoke_behavior(source, &binding, event, pressed);
+        }
+#else
+        return invoke_locally(&binding, event, pressed);
+#endif
+    case BEHAVIOR_LOCALITY_GLOBAL:
+#if IS_BLE_CENTRAL
+        zmk_split_bt_invoke_behavior(BT_ADDR_LE_ANY, &binding, event, pressed);
+#endif
+        return invoke_locally(&binding, event, pressed);
     }
+
+    return -ENOTSUP;
 }
 
-int zmk_keymap_position_state_changed(uint32_t position, bool pressed, int64_t timestamp) {
+int zmk_keymap_position_state_changed(zmk_position_state_changed_source_t source, uint32_t position,
+                                      bool pressed, int64_t timestamp) {
     if (pressed) {
         zmk_keymap_active_behavior_layer[position] = _zmk_keymap_layer_state;
     }
     for (int layer = ZMK_KEYMAP_LAYERS_LEN - 1; layer >= _zmk_keymap_layer_default; layer--) {
         if (zmk_keymap_layer_active_with_state(layer, zmk_keymap_active_behavior_layer[position])) {
-            int ret = zmk_keymap_apply_position_state(layer, position, pressed, timestamp);
+            int ret = zmk_keymap_apply_position_state(source, layer, position, pressed, timestamp);
             if (ret > 0) {
                 LOG_DBG("behavior processing to continue to next layer");
                 continue;
@@ -249,7 +292,7 @@ int zmk_keymap_sensor_triggered(uint8_t sensor_number, const struct device *sens
 int keymap_listener(const zmk_event_t *eh) {
     const struct zmk_position_state_changed *pos_ev;
     if ((pos_ev = as_zmk_position_state_changed(eh)) != NULL) {
-        return zmk_keymap_position_state_changed(pos_ev->position, pos_ev->state,
+        return zmk_keymap_position_state_changed(pos_ev->source, pos_ev->position, pos_ev->state,
                                                  pos_ev->timestamp);
     }