EpdRotate180()

Syntax

EpdRotate180()

Rotates any rectangle buffer at 180 degrees in place.

This transforms the data already sitting in a RAM/SRAM buffer — it does not update the screen.
Useful when you want to reuse image data that's already in the buffer at a new orientation, without redrawing it from scratch.

Note: This rotates whichever buffer is currently selected via EpdSetBuffer(). If EPD_Buffer_1 or EPD_Buffer_2 is selected, only that specific buffer is rotated.
If EPD_Buffer_A is selected (default), both buffers are rotated if two are declared, or just the one buffer if only one is declared.

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