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,
A
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
