Having Problem with internal memory for XIAO nrf52840 BLE Sense

[Norman1950]

Good afternoon everyone.

I am am trying to get my XIAO nrf52840 to read/write from the internal memory. Everytime I try to use any kind of LittleFS.h library, it does not recognize the library. I have tried the adafruit version, the arduino version and just using LittleFS.h. I am using Arduino IDE and using the mbed version of the nrf52840 BLE Sense board.

Any insight would be great. I can get the QSPI code on the Seeedstudio main page to work, but looking for a condense simple code.

Thank you.

[PJ_Glasso]

Hi there,

And Welcome Back, been a while.

So check out the internal external tester code and the tech used to access the Internal and external Flash as well as an additional (added chip) to the grove expansion board bottom.

Seeed Studio Grove Base for XIAO (SPI Solution) SUCCESS!

Hello There, Seeed_Seraphina… Thank you for providing me the library and examples. However there was no Flash profile present for the W25Q80DV that was needed by SFUD_FLASH_CHIP_TABLE for any of the examples to work. However, I was able after much trial and error , many cups of coffee and some minor epiphanies along the way. Discover the original "Serial Flash Universal Driver " library that the Seeed SFUD 1.0.0 version is based on, and has some hints on the configuration not in the S…

and this one is just for Fun.

QSPI Flash Access on Custom XIAO nRF52840 PCB

crossed_fingers: i there, So , as per usual @msfujino is correct… If I may add, have a look at this code and thread on the Grove Expansion Board, It has a spot on the Bottom to Add additional Flash and I have done so. The Testing zcode would be helpful to you. It tests both the Internal Flash, the External QSPI flash and the Solder-in Flash chip. I did both Nrf52840 & ESP32C3 vastly different configs for the SPI’s [Grove_expansion With Display and temp Probe] …

HTH
Gl PJ

[olivia_49]

Looks like the LittleFS libraries aren’t compatible with the mbed core you’re using. I’d stick with the Seeed QSPI examples or look for an mbed-specific filesystem solution.