16M partitions, second nvs

esp32_partition_16M.csv

@@ -1,6 +1,7 @@
 # Name,   Type, SubType, Offset,   Size,    Flags
-nvs,      data, nvs,     0x9000,   0x035000,
+nvs,      data, nvs,     0x9000,   0x005000,
 otadata,  data, ota,     ,         0x002000,
 app0,     app,  ota_0,   ,         0x6E0000,
 app1,     app,  ota_1,   ,         0x6E0000,
+nvs1,     data, nvs,     ,         0x030000,
 spiffs,   data, spiffs,  ,         0x200000,

platformio.ini

@@ -33,7 +33,7 @@ build_flags =
   -D ARDUINOTRACE_ENABLE=0
   -D CONFIG_ETH_ENABLED
   -D CONFIG_UART_ISR_IN_IRAM
-  -D CONFIG_ASYNC_TCP_STACK_SIZE=8192
+  -D CONFIG_ASYNC_TCP_STACK_SIZE=5120
 
 unbuild_flags =
   ${common.core_unbuild_flags}

src/emsesp.cpp

@@ -1496,7 +1496,9 @@ void EMSESP::start() {
 
     esp8266React.begin(); // loads core system services settings (network, mqtt, ap, ntp etc)
 
-    nvs_.begin("ems-esp", false, "nvs");
+    if (!nvs_.begin("ems-esp", false, "nvs1")) { // try new partition on 16M flash first
+        nvs_.begin("ems-esp", false, "nvs");     // fallback to  first nvs
+    }
 
     LOG_INFO("Starting EMS-ESP version %s", EMSESP_APP_VERSION); // welcome message
     LOG_DEBUG("System is running in Debug mode");