Hm that looks good. I used FAT32... did you create a new File with > 120MHZ ?
Well..if it works for you.. why does it not work for me ? I'll try FAT16...
Ok, Paul said, he used I2S @ with Teensy @ 240MHz... does not work for me, too.
A problem with my board ?
Found an issue with FATFS
Unicode (needed for Long Filename) on Teensy seems to be 32 bit and not 16 bit as assumed by Chan
(I only tested on K64)
can be tested with printf("%d",sizeof(L'1'))
updated https://github.com/WMXZ-EU/uSDFS