Flip screen function

[eugenner]

Hi, thanks for nice working library,
but is there any simple workaround to get possibility to flip screen content?
It is useful sometimes when text should be reflected by mirror...

[Bodmer]

There is a control register 0x36 (MADCTL) that sets mirroring, it is used by the rotation function, for example here for the ILI9341 driver. The bits in the data byte are define here for the ILI9341. The bit functions are:

#define TFT_MAD_MY 0x80 // Mirror rows
#define TFT_MAD_MX 0x40 // Mirror columns
#define TFT_MAD_MV 0x20 // Row and column exchange
#define TFT_MAD_ML 0x10 // Vertical refresh order
#define TFT_MAD_BGR 0x08 // RGB or BRG colour order
#define TFT_MAD_MH 0x04 // Horizontal refresh order

Check the data sheet for your TFT controller.