(FATFS)Writing a single block is normal, but writing multiblocks is failed.There is only one empty folder.

[Lep]

I save ads1299's data to SDcard by FATFS(spi mode). Writing single block is ok .

Because writing single block is too slow(CMD24), I change it to writing multiblocks(CMD25). But there is only an empty txt, it's no data.I don't know how to solve it.