added experimental RP2040 support

examples/Test_tar_gz_tgz/Test_tar_gz_tgz.ino

@@ -614,7 +614,7 @@ void setup()
 
   if( test_succeeded ) {
     Serial.println( OpenLine );
-    SerialPrintfCentered("Test #%d succeeded, will proceed to the next test", testNum+1);
+    SerialPrintfCentered("Test #%d finished, will proceed to the next test", testNum+1);
     Serial.println( CloseLine );
 
     testNum++;

src/ESP32-targz-lib.cpp

@@ -106,7 +106,9 @@ static uint32_t output_position = 0;  //position in output_buffer
 static uint16_t blockmod = GZIP_BUFF_SIZE / TAR_BLOCK_SIZE;
 static uint16_t gzTarBlockPos = 0;
 static size_t   tarReadGzStreamBytes = 0;
-static bool     tarBlockIsUpdateData = false;
+#if defined HAS_OTA_SUPPORT
+  static bool     tarBlockIsUpdateData = false;
+#endif
 size_t          min_output_buffer_size = 512;
 
 #if defined ESP32

src/ESP32-targz-lib.hpp

@@ -42,15 +42,16 @@
 
 #include <FS.h>
 
-
 #if defined( ESP32 )
   #include <Update.h>
+  #define HAS_OTA_SUPPORT
 #elif defined( ESP8266 )
   //#ifdef USE_LittleFS
   //  #define SPIFFS LittleFS
   //  #include <LittleFS.h>
   //#endif
   #include <Updater.h>
+  #define HAS_OTA_SUPPORT
 #elif defined ARDUINO_ARCH_RP2040
   // TODO: RP2040 OTA implementation?
 #else

src/ESP32-targz.h

@@ -165,11 +165,6 @@ __attribute__((unused)) static size_t targzTotalBytesFn() {
 }
 
 
-#if defined ESP32 || defined ESP8266
-  #define HAS_OTA_SUPPORT
-#endif
-
-
 #include "ESP32-targz-lib.hpp"
 
 #endif