Added some conditional version tests idf 5.1

Fixed changing runtime datarecord size during switching between IDF 4.2 and 5.1. Fixed wiping the /spiffs filesystem. The directory listing from the SD card doesn't overwrite parts of the screen anymore. Solved the slow speed issue with the SD card. Try to force the SD card to operate at 20 MHz. More project settings changed to improve performance and memory usage. idf 5.1

(0) -100 -30 -10 -2 +2 tip

mercurial