add 'NO_GLOBAL_UPDATE' define to avoid creating global UpdateClass in…

…stance (#8500) Save 180 bytes of ram if UpdateClass instance is not required
espressif · Aug 29, 2023 · f0910e6 · f0910e6
1 parent dbc060b
commit f0910e6
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diff --git a/libraries/Update/src/Update.h b/libraries/Update/src/Update.h
@@ -190,6 +190,8 @@ class UpdateClass {
     uint8_t _ledOn;
 };
 
+#if !defined(NO_GLOBAL_INSTANCES) && !defined(NO_GLOBAL_UPDATE)
 extern UpdateClass Update;
+#endif
 
 #endif
diff --git a/libraries/Update/src/Updater.cpp b/libraries/Update/src/Updater.cpp
@@ -414,4 +414,6 @@ bool UpdateClass::_chkDataInBlock(const uint8_t *data, size_t len) const {
     return false;
 }
 
+#if !defined(NO_GLOBAL_INSTANCES) && !defined(NO_GLOBAL_UPDATE)
 UpdateClass Update;
+#endif