fs: file write error (-5)

[andy]

Hi~:

I use microsd card on nrf21540, the sd card mounted success and write file success, but after some time ,I found write error.

And this issue can be reappeared. Can you give me some suggession.Thanks!

I use the ncs V1.9.

[Jørgen Holmefjord]

Hi,

Are you using a nRF21540 DK, or a custom board with this chip? I assume that the SD card is connected to the nRF52840 and not nRF21540?

How is the SD card connected to the chip? 

Can you post your prj.conf and overlay files?

Can you check if setting the log level of the SDMMC library to DBG reveals more details about the failure?

Best regards,
Jørgen

[andy]

I using nRF21540 DK. And this is my prj.conf and overlay.

And this is the debug info when error happen.