refactor(settings): Debounce BLE/endpoint settings saves

app/src/ble.c

@@ -228,6 +228,23 @@ int zmk_ble_clear_bonds() {
 
 int zmk_ble_active_profile_index() { return active_profile; }
 
+#if IS_ENABLED(CONFIG_SETTINGS)
+static void ble_save_profile_work(struct k_work *work) {
+    settings_save_one("ble/active_profile", &active_profile, sizeof(active_profile));
+}
+
+static struct k_delayed_work ble_save_work;
+#endif
+
+static int ble_save_profile() {
+#if IS_ENABLED(CONFIG_SETTINGS)
+    k_delayed_work_cancel(&ble_save_work);
+    return k_delayed_work_submit(&ble_save_work, K_MSEC(CONFIG_ZMK_SETTINGS_SAVE_DEBOUNCE));
+#else
+    return 0;
+#endif
+}
+
 int zmk_ble_prof_select(uint8_t index) {
     LOG_DBG("profile %d", index);
     if (active_profile == index) {
@@ -235,7 +252,7 @@ int zmk_ble_prof_select(uint8_t index) {
     }
 
     active_profile = index;
-    settings_save_one("ble/active_profile", &active_profile, sizeof(active_profile));
+    ble_save_profile();
 
     update_advertising();
 
@@ -526,6 +543,8 @@ static int zmk_ble_init(const struct device *_arg) {
         return err;
     }
 
+    k_delayed_work_init(&ble_save_work, ble_save_profile_work);
+
     settings_load_subtree("ble");
     settings_load_subtree("bt");
 

app/src/endpoints.c

@@ -29,6 +29,23 @@ static enum zmk_endpoint preferred_endpoint =
 
 static void update_current_endpoint();
 
+#if IS_ENABLED(CONFIG_SETTINGS)
+static void endpoints_save_preferred_work(struct k_work *work) {
+    settings_save_one("endpoints/preferred", &preferred_endpoint, sizeof(preferred_endpoint));
+}
+
+static struct k_delayed_work endpoints_save_work;
+#endif
+
+static int endpoints_save_preferred() {
+#if IS_ENABLED(CONFIG_SETTINGS)
+    k_delayed_work_cancel(&endpoints_save_work);
+    return k_delayed_work_submit(&endpoints_save_work, K_MSEC(CONFIG_ZMK_SETTINGS_SAVE_DEBOUNCE));
+#else
+    return 0;
+#endif
+}
+
 int zmk_endpoints_select(enum zmk_endpoint endpoint) {
     LOG_DBG("Selected endpoint %d", endpoint);
 
@@ -38,9 +55,7 @@ int zmk_endpoints_select(enum zmk_endpoint endpoint) {
 
     preferred_endpoint = endpoint;
 
-#if IS_ENABLED(CONFIG_SETTINGS)
+    endpoints_save_preferred();
-    settings_save_one("endpoints/preferred", &preferred_endpoint, sizeof(preferred_endpoint));
-#endif
 
     update_current_endpoint();
 
@@ -166,6 +181,8 @@ static int zmk_endpoints_init(const struct device *_arg) {
         return err;
     }
 
+    k_delayed_work_init(&endpoints_save_work, endpoints_save_preferred_work);
+
     settings_load_subtree("endpoints");
 #endif