Memory Optimizations

platformio.ini

@@ -19,4 +19,18 @@ lib_deps =
 	miguelbalboa/MFRC522@^1.4.12
 	bblanchon/ArduinoJson@^6.21.3
 monitor_speed = 115200
+build_flags = 
+    -Os                                    ; Optimize for size
+    -DCORE_DEBUG_LEVEL=0                  ; Disable all debug output
+    -DARDUINO_LOOP_STACK_SIZE=3072        ; Further reduce from 4096
+    -DWIFI_TASK_STACK_SIZE=3072           ; Reduce WiFi task stack
+    -DARDUINO_EVENT_TASK_STACK_SIZE=2048  ; Reduce event task stack
+    -DTCPIP_TASK_STACK_SIZE=2048          ; Reduce TCP/IP stack
+    -DESP_TASK_WDT_TIMEOUT_S=10           ; Reduce watchdog timeout
+  	-DCONFIG_ASYNC_TCP_MAX_ACK_TIME=3000   
+  	-DCONFIG_ASYNC_TCP_PRIORITY=10         ; (keep default)
+  	-DCONFIG_ASYNC_TCP_QUEUE_SIZE=64       ; (keep default)
+  	-DCONFIG_ASYNC_TCP_RUNNING_CORE=1      ; force async_tcp task to be on same core as Arduino app (default is any core)
+  	-DCONFIG_ASYNC_TCP_STACK_SIZE=4096     ; reduce the stack size (default is 16K)
+
 board_build.partitions = huge_app.csv