getChipVer() returns 0xFF, but everything else works

[petervanderwalt]

Hi, just playing around, and noticed getChipVer() returns 0xff (not 0x43 or 0x42 as the Readme says it should) Everything else works great (can read files, create files, browse directorys, etc - comms all working with the chip, just that one function that returns an odd result.