back to arduino esp23 1.0.6. version 2.0.0 has only 60k instead of 130k RAM left, too little for reliable web server operation

.travis.yml

@@ -1,7 +1,7 @@
 language: c
 env:
  global: 
-   - ESP32TOOLS=/home/travis/.arduino15/packages/esp32/hardware/esp32/2.0.0/tools
+   - ESP32TOOLS=/home/travis/.arduino15/packages/esp32/hardware/esp32/1.0.6/tools
    - MKSPIFFS=/home/travis/.arduino15/packages/esp32/tools/mkspiffs/0.2.3/mkspiffs
 before_install:
   - "/sbin/start-stop-daemon --start --quiet --pidfile /tmp/custom_xvfb_1.pid --make-pidfile --background --exec /usr/bin/Xvfb -- :1 -ac -screen 0 1280x1024x16"
@@ -45,7 +45,7 @@ install:
   - arduino --pref "custom_FlashFreq=ttgo-lora32-v1_80" --save-prefs
   - mkdir -p $PWD/build
   - arduino --pref "build.path=$PWD/build" --save-prefs
-  - arduino --install-boards esp32:esp32:2.0.0 --save-prefs
+  - arduino --install-boards esp32:esp32:1.0.6 --save-prefs
   - ln -s $PWD/libraries/SondeLib /usr/local/share/arduino/libraries/SondeLib
   - arduino --install-library "U8g2"
   - arduino --install-library "MicroNMEA"

scripts/makeimage.py

@@ -55,7 +55,8 @@ spiproc = subprocess.Popen([MKSPIFFS,'-c',data_dir,'-b','4096','-p','256','-s',s
 spiproc.wait();
 
 files_in = [
-    ('bootloader', OFFSET_BOOTLOADER, esp32tools+"/sdk/esp32/bin/bootloader_dio_80m.bin"),
+// for arduino esp32 2.0    ('bootloader', OFFSET_BOOTLOADER, esp32tools+"/sdk/esp32/bin/bootloader_dio_80m.bin"),
+    ('bootloader', OFFSET_BOOTLOADER, esp32tools+"/sdk/bin/bootloader_dio_80m.bin"),
     ('partitions', OFFSET_PARTITIONS, file_part),
     ('bootapp0', OFFSET_BOOTAPP0, esp32tools+"/partitions/boot_app0.bin"),
     ('application', OFFSET_APPLICATION, file_in),