From bc255151a899a5f0da48cca5d8248e8e68994f22 Mon Sep 17 00:00:00 2001
From: iranl <iranl@users.noreply.github.com>
Date: Wed, 2 Apr 2025 22:52:57 +0200
Subject: [PATCH] Reduce stack

---
 README.md                            | 14 +++++++-------
 platformio.ini                       |  9 +--------
 sdkconfig.defaults                   | 11 +++++++++++
 src/Config.h                         |  2 +-
 src/main.cpp                         |  2 +-
 src/networkDevices/NetworkDevice.cpp |  3 ++-
 src/networkDevices/WifiDevice.h      |  1 -
 7 files changed, 23 insertions(+), 19 deletions(-)

diff --git a/README.md b/README.md
index 50dd063..01ba2b9 100644
--- a/README.md
+++ b/README.md
@@ -186,12 +186,12 @@ ESP32 devices have a limited amount of free RAM available.<br>
 <br>
 On version >=9.10 of Nuki Hub with only a Nuki Lock connected the expected free amount of RAM/Heap available is around:
 
-- ESP32: 40.000 bytes
-- ESP32 with PSRAM: 90.000 bytes + PSRAM
-- ESP32-C3: 45.000 bytes
-- ESP32-C6: 170.000 bytes
-- ESP32-S3 90.000 bytes
-- ESP32-S3 with PSRAM: 130.000 bytes + PSRAM
+- ESP32: 70.000 bytes
+- ESP32 with PSRAM: 110.000 bytes + PSRAM
+- ESP32-C3: 90.000 bytes
+- ESP32-C6: 200.000 bytes
+- ESP32-S3 130.000 bytes
+- ESP32-S3 with PSRAM: 180.000 bytes + PSRAM
 
 This free amount of RAM can be reduced (temporarily) by certain actions (such as changing Nuki device config) or continuously when enabling the following:
 - Connecting both a Nuki opener and a Nuki lock to Nuki Hub
@@ -709,7 +709,7 @@ Please follow the instructions for the [First time installation](#first-time-ins
 ## MQTT Encryption (optional)
 
 The communication via MQTT can be SSL encrypted.<br>
-Note: MQTT SSL requires a significant amount of RAM and will not work in most cases on low RAM devices (ESP32 without PSRAM or ESP32-C3)
+Note: MQTT SSL requires a significant amount of RAM and might not work on low RAM devices (ESP32 without PSRAM or ESP32-C3)
 
 To enable SSL encryption, supply the necessary information in the MQTT Configuration page.<br>
 <br>
diff --git a/platformio.ini b/platformio.ini
index 6ea5182..0ba52dd 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -43,14 +43,7 @@ build_flags =
     -DNUKI_NO_WDT_RESET
     -DNUKI_MUTEX_RECURSIVE
     -DNUKI_64BIT_TIME
-    -DETH_SPI_SUPPORTS_NO_IRQ
-    -DEMC_RX_BUFFER_SIZE=1440
-    -DEMC_TX_BUFFER_SIZE=1440
-    -DEMC_MIN_FREE_MEMORY=8192
-    -DEMC_TASK_STACK_SIZE=10240
-    -DEMC_USE_MEMPOOL=1
-    -DEMC_NUM_POOL_ELEMENTS=64
-    -DEMC_SIZE_POOL_ELEMENTS=256    
+    -DETH_SPI_SUPPORTS_NO_IRQ   
     -Wno-ignored-qualifiers
     -Wno-missing-field-initializers
     -Wno-type-limits
diff --git a/sdkconfig.defaults b/sdkconfig.defaults
index 2cb66bd..b7bf4b8 100644
--- a/sdkconfig.defaults
+++ b/sdkconfig.defaults
@@ -6,6 +6,17 @@ CONFIG_ESPTOOLPY_HEADER_FLASHSIZE_UPDATE=y
 CONFIG_SPIFFS_GC_MAX_RUNS=512
 CONFIG_FREERTOS_IDLE_TASK_STACKSIZE=3072
 
+# REDUCE RAM USAGE
+CONFIG_FREERTOS_PLACE_FUNCTIONS_INTO_FLASH=y
+CONFIG_RINGBUF_PLACE_FUNCTIONS_INTO_FLASH=y
+CONFIG_SPI_FLASH_ROM_DRIVER_PATCH=n
+CONFIG_ESP32_REV_MIN=3
+CONFIG_ESP_EVENT_POST_FROM_IRAM_ISR=n
+CONFIG_SPI_MASTER_ISR_IN_IRAM=n
+CONFIG_SPI_SLAVE_ISR_IN_IRAM=n
+CONFIG_HAL_DEFAULT_ASSERTION_LEVEL=0
+CONFIG_HEAP_PLACE_FUNCTION_INTO_FLASH=y
+
 # ARDUINO
 CONFIG_AUTOSTART_ARDUINO=y
 CONFIG_FREERTOS_HZ=1000
diff --git a/src/Config.h b/src/Config.h
index e8c976a..5649086 100644
--- a/src/Config.h
+++ b/src/Config.h
@@ -5,7 +5,7 @@
 #define NUKI_HUB_VERSION "9.10"
 #define NUKI_HUB_VERSION_INT (uint32_t)910
 #define NUKI_HUB_BUILD "unknownbuildnr"
-#define NUKI_HUB_DATE "2025-04-01"
+#define NUKI_HUB_DATE "2025-04-02"
 
 #define GITHUB_LATEST_RELEASE_URL (char*)"https://github.com/technyon/nuki_hub/releases/latest"
 #define GITHUB_OTA_MANIFEST_URL (char*)"https://raw.githubusercontent.com/technyon/nuki_hub/binary/ota/manifest.json"
diff --git a/src/main.cpp b/src/main.cpp
index dd18e90..3bc5efd 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -14,7 +14,7 @@
 #include "esp_core_dump.h"
 #include "FS.h"
 #include "SPIFFS.h"
-#include <ESPmDNS.h>
+//#include <ESPmDNS.h>
 #ifdef CONFIG_SOC_SPIRAM_SUPPORTED
 #include "esp_psram.h"
 #endif
diff --git a/src/networkDevices/NetworkDevice.cpp b/src/networkDevices/NetworkDevice.cpp
index d4eedae..447a17c 100644
--- a/src/networkDevices/NetworkDevice.cpp
+++ b/src/networkDevices/NetworkDevice.cpp
@@ -16,7 +16,8 @@ void NetworkDevice::init()
     #ifdef CONFIG_SOC_SPIRAM_SUPPORTED
     if(esp_psram_get_size() > 0)
     {
-        _mqttInternal = true;
+        //_mqttInternal = true;
+        _mqttInternal = false;
     }
     #endif
     
diff --git a/src/networkDevices/WifiDevice.h b/src/networkDevices/WifiDevice.h
index a469318..9c29c08 100644
--- a/src/networkDevices/WifiDevice.h
+++ b/src/networkDevices/WifiDevice.h
@@ -5,7 +5,6 @@
 #include "IPConfiguration.h"
 #include "esp_wifi.h"
 #include <WiFi.h>
-#include <ESPmDNS.h>
 
 class WifiDevice : public NetworkDevice
 {