SparkFun Forums

[RonK]

I would like to use the Winbond W25QXX128MBIT eeprom on the ESP32 Micromod processor board for data storage, preferably with a structure similar to SPIFFS. I am using the Platformio IDE and I have looked at the various arduino libraries but none seem to be just for this chip. I would greatly appreciate the details if anyone has found and used such a library.
Cheers, Ron

[TS-Russell]

There's a link to some files here (scroll down a bit) https://github.com/Aircoookie/WLED/issues/1647 that might be what you're after?

[RonK]

Thanks for that suggestion. However, I think they were dealing with flashing the chip stand-alone, whereas I need to write/read the W25xx from the ESP32 under program control.
Looking at the Sparkfun drawing for the ESP32 Micromod CPU board, the 6 W25xx lines are driven from the ESP32 SPICLK, SPIQ, SPID, SPIHD, SPIWP, and SPICS0 lines. I would have assumed that putting this chip on their board, Sparkfun would have provided software to access it, or at least make a reference to some third party software they based the installation on and have performed some testing with.
So my original question remains: does anyone know of software for the ESP32 that can drive a W25xx eeprom?