The P2, Photon 2, and Gen 3 devices (B Series SoM, Tracker SoM, Boron, Argon, and E404X) implement a POSIX-style file system API to store files on the LittleFS flash file system on the QSPI flash memory on the module.
|Device||Since Device OS||Size|
|Tracker SoM||1.5.4-rc.1||4 MB|
|Argon, Boron, B Series SoM||2.0.0-rc.1||2 MB|
For more detailed information about the file system, see the application note AN035 File System.
Gen 2 Devices (E Series, Electron, Photon, and P2; does not include E404X):
The File System is not available on Gen 2 devices (Photon, P1, Electron, E Series except the E404X).