While we try to get that working, this would require that the SD card be formatted in advance, right? I would imagine we could possibly pre-format two FAT partitions, load both partitions and then re-format one of them to be littlefs (since littlefs formatting from a host computer is non-trivial as far as I'm aware). Since we want 1 littlefs and 1 FAT partition. Does NuttX have a better way to format an SD into two partitions via an internal API, similar to how you can call `nx_mount` with "forceformat" to re-format an entire block device?
Thank you so much for your help, Matteo On Tue, Oct 29, 2024 at 12:45 AM Xiang Xiao <xiaoxiang781...@gmail.com> wrote: > On Tue, Oct 29, 2024 at 10:02 AM Jia Lin <jia89...@gmail.com> wrote: > > > On 2024/10/26 05:27:35 Xiang Xiao wrote: > > > have you enable CONFIG_GPT_PARTITION or CONFIG_MBR_PARTITION and > > > call parse_block_partition: > > > > > > > > https://github.com/apache/nuttx/blob/master/include/nuttx/fs/partition.h#L81 > > > to register partitions as block devices again, so you can mount the > > > different file systems on these new block devices. > > > > > > Thanks > > > Xiang > > > > > > On Sat, Oct 26, 2024 at 4:51 AM Matteo Golin <ma...@gmail.com> wrote: > > > > > > > I got my hands on a SPI SD card adapter and managed to try out SD/MMC > > > > support for it through NuttX on my Pico. FAT file > > > > systems worked with no problem, and after a little configuring I > > managed > > > > to get littlefs going as well. > > > > > > > > Now I'm wondering if NuttX has support for multiple partitions on the > > same > > > > device; I'm hoping I can take a 32GB micro-SD > > > > card and have 16GB be littlefs and 16GB be vfat. I haven't been able > to > > > > find any documentation about this though, and > > > > after formatting my SD card to have two vfat partitions I can see > that > > > > NuttX is only able to mount the first one. > > > > > > > > I managed briefly to get both partitions on one card by first > > formatting > > > > the card as littlefs, then using fdisk on my > > > > host computer to add a vfat partition starting halfway through the > > card, > > > > and then was able to mount both on NuttX as two > > > > distinct file systems. Unfortunately after putting files on them, > > > > rebooting NuttX and trying to remount, the vfat > > > > partition was corrupted. > > > > > > > > Has anyone managed to get multiple partitions to work? How would I go > > > > about it? > > > > > > > > Matteo > > > > > > > > > > > Hello everyone, > > > > I work with Matteo on CUInspace and am currently trying to get Nuttx to > > recognize two partitions on a SD card. Currently I'm a little confused on > > how to use / implement parse_block_partition. I did find a previous > thread > > on a similar subject ( > > https://lists.apache.org/thread/q19rdvst6k687s4v045q362j68r2so1t > > <(https://lists.apache.org/thread/q19rdvst6k687s4v045q362j68r2so1t>), > but > > I > > am a bit lost trying to follow the code, specifically on where would be > the > > best place to call parse_block_partition. If anyone has any experience > with > > mounting an SD card with multiple partitions any help would be > appreciated! > > > > > If the card is inserted physically, you can call parse_block_partition in > board initialization like: > > https://github.com/apache/nuttx/blob/master/boards/risc-v/mpfs/common/src/mpfs_emmcsd.c#L74 > if the card is inserted dynamically, you may need insert the call in > automount: > https://github.com/apache/nuttx/blob/master/fs/mount/fs_automount.c > > > > > Thanks, > > Tony > > >
