feat(ble): Add event for inactive BLE profile changes

app/CMakeLists.txt

@@ -82,6 +82,7 @@ if ((NOT CONFIG_ZMK_SPLIT) OR CONFIG_ZMK_SPLIT_ROLE_CENTRAL)
 
   if (CONFIG_ZMK_BLE)
     target_sources(app PRIVATE src/events/ble_active_profile_changed.c)
+    target_sources(app PRIVATE src/events/ble_inactive_profile_changed.c)
     target_sources(app PRIVATE src/behaviors/behavior_bt.c)
     target_sources(app PRIVATE src/ble.c)
     target_sources(app PRIVATE src/hog.c)

app/boards/shields/nice_view/widgets/status.c

@@ -17,6 +17,7 @@ LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL);
 #include <zmk/event_manager.h>
 #include <zmk/events/battery_state_changed.h>
 #include <zmk/events/ble_active_profile_changed.h>
+#include <zmk/events/ble_inactive_profile_changed.h>
 #include <zmk/events/endpoint_changed.h>
 #include <zmk/events/wpm_state_changed.h>
 #include <zmk/events/layer_state_changed.h>
@@ -282,6 +283,7 @@ ZMK_SUBSCRIPTION(widget_output_status, zmk_usb_conn_state_changed);
 #endif
 #if defined(CONFIG_ZMK_BLE)
 ZMK_SUBSCRIPTION(widget_output_status, zmk_ble_active_profile_changed);
+ZMK_SUBSCRIPTION(widget_output_status, zmk_ble_inactive_profile_changed);
 #endif
 
 static void set_layer_status(struct zmk_widget_status *widget, struct layer_status_state state) {

app/include/zmk/events/ble_inactive_profile_changed.h

@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2025 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#pragma once
+
+#include <zephyr/kernel.h>
+#include <zmk/event_manager.h>
+#include <zephyr/device.h>
+
+#include <zmk/ble/profile.h>
+
+struct zmk_ble_inactive_profile_changed {
+    uint8_t index;
+    struct zmk_ble_profile *profile;
+};
+
+ZMK_EVENT_DECLARE(zmk_ble_inactive_profile_changed);

app/src/ble.c

@@ -36,6 +36,7 @@ LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL);
 #include <zmk/split/bluetooth/uuid.h>
 #include <zmk/event_manager.h>
 #include <zmk/events/ble_active_profile_changed.h>
+#include <zmk/events/ble_inactive_profile_changed.h>
 
 #if IS_ENABLED(CONFIG_ZMK_BLE_PASSKEY_ENTRY)
 #include <zmk/events/keycode_state_changed.h>
@@ -96,6 +97,22 @@ static void raise_profile_changed_event_callback(struct k_work *work) {
 
 K_WORK_DEFINE(raise_profile_changed_event_work, raise_profile_changed_event_callback);
 
+static void raise_inactive_profile_changed_event(uint8_t index) {
+    raise_zmk_ble_inactive_profile_changed(
+        (struct zmk_ble_inactive_profile_changed){.index = index, .profile = &profiles[index]});
+}
+
+struct raise_inactive_profile_changed_event_work {
+    struct k_work work;
+    uint8_t index;
+} raise_inactive_profile_changed_event_work;
+
+static void raise_inactive_profile_changed_event_callback(struct k_work *work) {
+    struct raise_inactive_profile_changed_event_work *info =
+        CONTAINER_OF(work, struct raise_inactive_profile_changed_event_work, work);
+    raise_inactive_profile_changed_event(info->index);
+}
+
 bool zmk_ble_active_profile_is_open(void) { return zmk_ble_profile_is_open(active_profile); }
 
 bool zmk_ble_profile_is_open(uint8_t index) {
@@ -527,6 +544,13 @@ static void connected(struct bt_conn *conn, uint8_t err) {
     if (is_conn_active_profile(conn)) {
         LOG_DBG("Active profile connected");
         k_work_submit(&raise_profile_changed_event_work);
+    } else {
+        const int profile_index = zmk_ble_profile_index(bt_conn_get_dst(conn));
+        if (profile_index > -1) {
+            LOG_DBG("Other profile connected");
+            raise_inactive_profile_changed_event_work.index = profile_index;
+            k_work_submit(&raise_inactive_profile_changed_event_work.work);
+        }
     }
 }
 
@@ -552,6 +576,13 @@ static void disconnected(struct bt_conn *conn, uint8_t reason) {
     if (is_conn_active_profile(conn)) {
         LOG_DBG("Active profile disconnected");
         k_work_submit(&raise_profile_changed_event_work);
+    } else {
+        const int profile_index = zmk_ble_profile_index(bt_conn_get_dst(conn));
+        if (profile_index > -1) {
+            LOG_DBG("Other profile disconnected");
+            raise_inactive_profile_changed_event_work.index = profile_index;
+            k_work_submit(&raise_inactive_profile_changed_event_work.work);
+        }
     }
 }
 
@@ -742,6 +773,8 @@ static int zmk_ble_init(void) {
 #if IS_ENABLED(CONFIG_SETTINGS)
     settings_register(&profiles_handler);
     k_work_init_delayable(&ble_save_work, ble_save_profile_work);
+    k_work_init(&raise_inactive_profile_changed_event_work.work,
+                raise_inactive_profile_changed_event_callback);
 #else
     zmk_ble_complete_startup();
 #endif

app/src/events/ble_inactive_profile_changed.c

@@ -0,0 +1,10 @@
+/*
+ * Copyright (c) 2025 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <zephyr/kernel.h>
+#include <zmk/events/ble_inactive_profile_changed.h>
+
+ZMK_EVENT_IMPL(zmk_ble_inactive_profile_changed);