Hi prelude, Please enable the debug (ERR, WARN e INFO) for MMC/SDCard:
[*] Memory Card Driver Debug Features [*] Memory Card Driver Error Output [*] Memory Card Driver Warnings Output [*] Memory Card Driver Informational Output It could give us more details about the issue. BR, Alan On 1/10/23, prelude <wgz_z...@163.com> wrote: > I use spi_bitbang to drive the SD card on the k210 chip development board, > referring to the content in the sam_mmcsd.c file， > The following two configuration items are opened: CONFIG_SPI_BITBANG and > CONFIG_MMCSD_SPI，After compiling, programming and starting, > you can see /dev/mmcsd0, but when you insert the sd card and execute "mount > -t vfat /dev/mmcsd0 /mnt" to mount the sd card, > the following error is reported "nsh : mount: mount failed: Function not > implemented".I want to ask my friends, is there a solution to this problem? > >
