found a way to increase TCP stacksize (for AudioReactive UI)

we can use `-D CONFIG_ASYNC_TCP_TASK_STACK_SIZE=xxxx` to increase the stack size of AsyncWebserver - default is 8196.
This should give us a bit of headroom for new UI items.

We still need PR #94 for more savings.

platformio.ini

@@ -294,6 +294,7 @@ build_flags = -g
   -DARDUINO_ARCH_ESP32
   #-DCONFIG_LITTLEFS_FOR_IDF_3_2
   -D CONFIG_ASYNC_TCP_USE_WDT=0
+  -D CONFIG_ASYNC_TCP_TASK_STACK_SIZE=9472                ;; WLEDMM increase stack by 1.25Kb, as audioreactive needs bigger SETTINGS_STACK_BUF_SIZE
   #use LITTLEFS library by lorol in ESP32 core 1.x.x instead of built-in in 2.x.x
   -D LOROL_LITTLEFS
   ; -DARDUINO_USB_CDC_ON_BOOT=0 ;; this flag is mandatory for "classic ESP32" when building with arduino-esp32 >=2.0.3
@@ -334,6 +335,7 @@ build_flagsV4 = -g
   -DARDUINO_ARCH_ESP32 -DESP32
   -DCONFIG_LITTLEFS_FOR_IDF_3_2 -DLFS_THREADSAFE
   -D CONFIG_ASYNC_TCP_USE_WDT=0
+  -D CONFIG_ASYNC_TCP_TASK_STACK_SIZE=9472              ;; WLEDMM increase stack by 1.25Kb, as audioreactive needs bigger SETTINGS_STACK_BUF_SIZE
   ; -DARDUINO_USB_CDC_ON_BOOT=0 ;; mandatory for "classic ESP32" when builing with arduino-esp32 >=2.0.3
 ;;; V4.4.x libraries (without LOROL_LITTLEFS; with newer NeoPixelBus)
 lib_depsV4 =
@@ -357,6 +359,7 @@ build_flags = -g
   -DARDUINO_ARCH_ESP32 -DESP32
   #-DCONFIG_LITTLEFS_FOR_IDF_3_2
   -D CONFIG_ASYNC_TCP_USE_WDT=0
+  -D CONFIG_ASYNC_TCP_TASK_STACK_SIZE=9472              ;; WLEDMM increase stack by 1.25Kb, as audioreactive needs bigger SETTINGS_STACK_BUF_SIZE
   -DARDUINO_USB_CDC_ON_BOOT=0 ;; this flag is mandatory for "classic ESP32" when building with arduino-esp32 >=2.0.3
 default_partitions = tools/WLED_ESP32_4MB_1MB_FS.csv
 lib_deps =
@@ -375,6 +378,7 @@ build_flags = -g
   -DCONFIG_IDF_TARGET_ESP32S2=1
   -DCONFIG_LITTLEFS_FOR_IDF_3_2 -DLFS_THREADSAFE   ;; WLEDMM
   -D CONFIG_ASYNC_TCP_USE_WDT=0
+  -D CONFIG_ASYNC_TCP_TASK_STACK_SIZE=9216         ;; WLEDMM increase stack by 1Kb, as audioreactive needs bigger SETTINGS_STACK_BUF_SIZE
   -DARDUINO_USB_MSC_ON_BOOT=0 -DARDUINO_USB_DFU_ON_BOOT=0
   -DCO
   -DARDUINO_USB_MODE=0 ;; this flag is mandatory for ESP32-S2 !
@@ -397,6 +401,7 @@ build_flags = -g
   -DCONFIG_IDF_TARGET_ESP32C3=1
   -DCONFIG_LITTLEFS_FOR_IDF_3_2 -DLFS_THREADSAFE   ;; WLEDMM
   -D CONFIG_ASYNC_TCP_USE_WDT=0
+  -D CONFIG_ASYNC_TCP_TASK_STACK_SIZE=9472         ;; WLEDMM increase stack by 1.25Kb, as audioreactive needs bigger SETTINGS_STACK_BUF_SIZE
   -DCO
   -DARDUINO_USB_MODE=1 ;; this flag is mandatory for ESP32-C3
   ;; please make sure that the following flags are properly set (to 0 or 1) by your board.json, or included in your custom platformio_override.ini entry:
@@ -419,6 +424,7 @@ build_flags = -g
   -DCONFIG_IDF_TARGET_ESP32S3=1
   -DCONFIG_LITTLEFS_FOR_IDF_3_2 -DLFS_THREADSAFE   ;; WLEDMM
   -D CONFIG_ASYNC_TCP_USE_WDT=0
+  -D CONFIG_ASYNC_TCP_TASK_STACK_SIZE=9472         ;; WLEDMM increase stack by 1.25Kb, as audioreactive needs bigger SETTINGS_STACK_BUF_SIZE
   -DARDUINO_USB_MSC_ON_BOOT=0 -DARDUINO_DFU_ON_BOOT=0
   -DCO
   ;; please make sure that the following flags are properly set (to 0 or 1) by your board.json, or included in your custom platformio_override.ini entry:

usermods/audioreactive/audio_reactive.h

@@ -91,6 +91,17 @@
   #define PLOT_FLUSH()
 #endif
 
+// sanity checks
+#ifdef ARDUINO_ARCH_ESP32
+  // we need more space in for oappend() stack buffer -> SETTINGS_STACK_BUF_SIZE and CONFIG_ASYNC_TCP_TASK_STACK_SIZE
+  #if SETTINGS_STACK_BUF_SIZE < 3904    // 3904 is required for WLEDMM-0.14.0-b28
+    #warning please increase SETTINGS_STACK_BUF_SIZE >= 3904
+  #endif
+  #if (CONFIG_ASYNC_TCP_TASK_STACK_SIZE - SETTINGS_STACK_BUF_SIZE) < 4352 // at least 4096+256 words of free task stack is needed by async_tcp alone
+    #error remaining async_tcp stack will be too low - please increase CONFIG_ASYNC_TCP_TASK_STACK_SIZE
+  #endif
+#endif
+
 // audiosync constants
 #define AUDIOSYNC_NONE 0x00      // UDP sound sync off
 #define AUDIOSYNC_SEND 0x01      // UDP sound sync - send mode

wled00/const.h

@@ -382,7 +382,11 @@
 #ifdef ESP8266
 #define SETTINGS_STACK_BUF_SIZE 2048
 #else
-#define SETTINGS_STACK_BUF_SIZE 3834   // WLEDMM added 696+32 bytes of margin (was 3096) for audioreactive UI
+  #if !defined(USERMOD_AUDIOREACTIVE)
+    #define SETTINGS_STACK_BUF_SIZE 3834   // WLEDMM added 696+32 bytes of margin (was 3096)
+  #else
+    #define SETTINGS_STACK_BUF_SIZE 3904   // WLEDMM more buffer for audioreactive UI (add '-D CONFIG_ASYNC_TCP_TASK_STACK_SIZE=9216' to your build_flags)
+  #endif
 #endif
 
 #ifdef WLED_USE_ETHERNET

wled00/data/index.js

@@ -697,7 +697,7 @@ ${inforow("Filesystem",i.fs.u + "/" + i.fs.t + " kB (" +Math.round(i.fs.u*100/i.
 ${theap>0?inforow("Heap ☾",((i.totalheap-i.freeheap)/1000).toFixed(0)+"/"+theap.toFixed(0)+" kB"," ("+Math.round((i.totalheap-i.freeheap)/(10*theap))+"%)"):""}
 ${i.minfreeheap?inforow("Max used heap ☾",((i.totalheap-i.minfreeheap)/1000).toFixed(1)+" kB"," ("+Math.round((i.totalheap-i.minfreeheap)/(10*theap))+"%)"):""}
 ${inforow("Free heap",heap," kB")}
-${i.freestack?inforow("Free stack ☾",i.freestack," kB"):""} <!--WLEDMM-->
+${i.freestack?inforow("Free stack ☾",(i.freestack/1024).toFixed(3)," kB"):""} <!--WLEDMM-->
 ${inforow("Flash Size ☾",flashsize," kB")}  <!--WLEDMM and Athom-->
 ${i.tpram?inforow("PSRAM ☾",(i.tpram/1024).toFixed(1)," kB"):""}
 ${i.psram?((i.tpram-i.psram)>16383?inforow("Used PSRAM ☾",((i.tpram-i.psram)/1024).toFixed(1)," kB"):inforow("Used PSRAM ☾",(i.tpram-i.psram)," B")):""}

wled00/wled.cpp

@@ -64,6 +64,22 @@
 // WLEDMM end
 
 
+#if defined(ARDUINO_ARCH_ESP32) && (defined(WLED_DEBUG) || defined(WLED_DEBUG_HEAP))
+// WLEDMM stack debug tool - find async_tcp task, and queries it's free stack
+static int wledmm_get_tcp_stacksize(void) {
+  static TaskHandle_t tcp_taskHandle = NULL;                   // to store the task handle for later calls
+  char * tcp_taskname = pcTaskGetTaskName(tcp_taskHandle);     // ask for name of the known task (to make sure we are still looking at the right one)
+
+  if ((tcp_taskHandle == NULL) || (tcp_taskname == NULL) || (strncmp(tcp_taskname, "async_tcp", 9) != 0)) {
+    tcp_taskHandle = xTaskGetHandle("async_tcp");              // need to look for the task by name. FreeRTOS docs say this is very slow, so we store the result for next time
+    //DEBUG_PRINT(F("async_tcp task ")); DEBUG_PRINTLN( (tcp_taskHandle != NULL) ? F("found") : F("not found"));
+  }
+
+  if (tcp_taskHandle != NULL) return uxTaskGetStackHighWaterMark(tcp_taskHandle); // got it !!
+  else return -1;
+}
+#endif
+
 /*
  * Main WLED class implementation. Mostly initialization and connection logic
  */
@@ -347,6 +363,8 @@ void WLED::loop()
   if (millis() - debugTime > 4999 ) { // WLEDMM: Special case for debugging heap faster
     DEBUG_PRINT(F("*** Free heap: "));     DEBUG_PRINT(heap_caps_get_free_size(0x1800));
     DEBUG_PRINT(F("\tLargest free block: "));     DEBUG_PRINT(heap_caps_get_largest_free_block(0x1800));
+    DEBUG_PRINT(F(" *** \t\tArduino min free stack: ")); DEBUG_PRINT(uxTaskGetStackHighWaterMark(NULL));
+    DEBUG_PRINT(F("   TCP min free stack: ")); DEBUG_PRINT(wledmm_get_tcp_stacksize());
     DEBUG_PRINTLN(F(" ***"));    
     debugTime = millis();
   }
@@ -531,7 +549,7 @@ void WLED::setup()
 #endif
   DEBUG_PRINT(F("heap ")); DEBUG_PRINTLN(ESP.getFreeHeap());
 #ifdef ARDUINO_ARCH_ESP32
-  #if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(4, 4, 0)  // unfortunately not availeable in older framework versions
+  #if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(4, 4, 0)  // unfortunately not available in older framework versions
   DEBUG_PRINT(F("\nArduino  max stack  ")); DEBUG_PRINTLN(getArduinoLoopTaskStackSize());
   #endif
   DEBUG_PRINTF("%s min free stack %d\n", pcTaskGetTaskName(NULL), uxTaskGetStackHighWaterMark(NULL)); //WLEDMM
@@ -568,7 +586,7 @@ void WLED::setup()
 
   //DEBUG_PRINT(F("LEDs inited. heap usage ~"));
   //DEBUG_PRINTLN(heapPreAlloc - ESP.getFreeHeap());
-  USER_FLUSH();  // WLEDMM flush buffer now, before anything time-critial is started.
+  USER_FLUSH();  // WLEDMM flush buffer now, before anything time-critical is started.
 
   pinManager.manageDebugTXPin();
 

wled00/wled.h

@@ -8,7 +8,7 @@
  */
 
 // version code in format yymmddb (b = daily build)
-#define VERSION 2312050
+#define VERSION 2312120
 
 //WLEDMM + Moustachauve/Wled-Native 
 // You can define custom product info from build flags.

wled00/wled_server.cpp

@@ -575,8 +575,8 @@ void serveSettingsJS(AsyncWebServerRequest* request)
 
   #ifdef ARDUINO_ARCH_ESP32
     DEBUG_PRINT(F("ServeSettingsJS: "));
-    DEBUG_PRINTF("%s min free stack %d\n", pcTaskGetTaskName(NULL), uxTaskGetStackHighWaterMark(NULL)); //WLEDMM
-    DEBUG_PRINTF(PSTR(" bytes.\tString buffer usage: %4d of %d bytes\n"), strlen(buf)+1, SETTINGS_STACK_BUF_SIZE+37);
+    DEBUG_PRINTF("%s min free stack %d", pcTaskGetTaskName(NULL), uxTaskGetStackHighWaterMark(NULL)); //WLEDMM
+    DEBUG_PRINTF(PSTR(" bytes.\t\tString buffer usage: %4d of %d bytes\n"), strlen(buf)+1, SETTINGS_STACK_BUF_SIZE+37);
   #endif
 
   AsyncWebServerResponse *response;