From bc9a3d50939398623cc1ac916e3fab2934cb4871 Mon Sep 17 00:00:00 2001
From: Links2004 <help.markus+gitk@gmail.com>
Date: Sat, 20 Sep 2025 12:02:15 +0200
Subject: [PATCH] Disable BLE Client role to save space

---
 arch/esp32/esp32.ini           |  1 +
 src/nimble/NimbleBluetooth.cpp | 14 ++++++++++++++
 2 files changed, 15 insertions(+)

diff --git a/arch/esp32/esp32.ini b/arch/esp32/esp32.ini
index fcba1247f..f0122e236 100644
--- a/arch/esp32/esp32.ini
+++ b/arch/esp32/esp32.ini
@@ -33,6 +33,7 @@ build_flags =
   -DCONFIG_BT_NIMBLE_ENABLED
   -DNIMBLE_TWO
   -DCONFIG_NIMBLE_CPP_LOG_LEVEL=2
+  -DCONFIG_BT_NIMBLE_ROLE_CENTRAL_DISABLED
   -DCONFIG_BT_NIMBLE_MAX_CCCDS=20
   -DCONFIG_BT_NIMBLE_HOST_TASK_STACK_SIZE=8192
   -DESP_OPENSSL_SUPPRESS_LEGACY_WARNING
diff --git a/src/nimble/NimbleBluetooth.cpp b/src/nimble/NimbleBluetooth.cpp
index 2b41efd0e..db217bbde 100644
--- a/src/nimble/NimbleBluetooth.cpp
+++ b/src/nimble/NimbleBluetooth.cpp
@@ -310,10 +310,24 @@ int NimbleBluetooth::getRssi()
     if (bleServer && isConnected()) {
         auto service = bleServer->getServiceByUUID(MESH_SERVICE_UUID);
         uint16_t handle = service->getHandle();
+#ifdef CONFIG_BT_NIMBLE_ROLE_CENTRAL_DISABLED
+        if (handle == BLE_HS_CONN_HANDLE_NONE) {
+            return 0;
+        }
+
+        int8_t rssi = 0;
+        int rc = ble_gap_conn_rssi(handle, &rssi);
+        if (rc != 0) {
+            return 0;
+        }
+
+        return rssi;
+#else
 #ifdef NIMBLE_TWO
         return NimBLEDevice::getClientByHandle(handle)->getRssi();
 #else
         return NimBLEDevice::getClientByID(handle)->getRssi();
+#endif
 #endif
     }
     return 0; // FIXME figure out where to source this