Hello Mr. Gregory, I am using 4 GB eMMC at the moment , and so far it is working perfectly. Nuttx is recognizing the eMMC it is able to format it in FAT and now i am able to mount it , read and write in it, so so far i have no problems at all with the eMMC. THe only thing is that i use 1 wire setup so , I am not using the full speed which eMMC can offer but for my case that is okay. Later on i am planning to add also the Fast modes and 4 wire and 8 wire support.
Best regards, Ivan Ucherdzhiev On Tue, Jan 21, 2020 at 6:36 PM Gregory Nutt <spudan...@gmail.com> wrote: > > > Please excuse me i found the mkfatfs command and everything is working > > perfectly. Please excuse me for disturbing you. > > I don't really know very much about eMMC, but the MMC support in NuttX > was designed and implemented only for Classic MMC cards. I have heard > reports from you and other people that it works with eMMC. But that > just shows that they supported backward compatibility with old MMC cards. > > My understanding is the eMMC has extensions -- including 4-bit width > transfers -- that are not implemented. I suspect that if you really > want proper eMMC performance, those extensions would need to be > implemented. > > Greg > > > -- Kind regards, Ivan Ucherdzhiev Team Lead @ Barin Sports Bulgaria skype: ipy_44 tel: +359888927760
