I know that we can access SD card using some shield or SD breakout board on top of Arduino shield. Since I power my photon from a Sparkfun battery field, the USB port on the Photon board is now available for other use.
Is it possible to the on-board USB to READ and WRTIE to an SD card? If so, any example, demo, or SD library for Photon?
Thanking you in advance.