Bypass OOM-Crash on minimal version & history access

src/platformio.ini

@@ -94,6 +94,18 @@ build_flags = ${env.build_flags}
 monitor_filters =
     esp8266_exception_decoder
 
+[env:esp8266-minimal]
+platform = espressif8266
+board = esp12e
+board_build.f_cpu = 80000000L
+build_flags = ${env.build_flags}
+    -DEMC_MIN_FREE_MEMORY=4096
+    ;-Wl,-Map,output.map
+monitor_filters =
+    esp8266_exception_decoder
+
+
+
 [env:esp8285]
 platform = espressif8266
 board = esp8285

src/web/RestApi.h

@@ -805,6 +805,8 @@ class RestApi {
             }
             obj[F("max")] = max;
             obj[F("maxDay")] = mApp->getHistoryMaxDay();
+            #else
+            obj[F("refresh")] = 86400;  // 1 day;
             #endif /*ENABLE_HISTORY*/
         }
 
@@ -820,6 +822,8 @@ class RestApi {
                     max = value;
             }
             obj[F("max")] = max;
+            #else
+            obj[F("refresh")] = 86400;  // 1 day
             #endif /*ENABLE_HISTORY*/
         }