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// This is the command sequence that rotates the ILI9481 driver coordinate frame
writecommand(TFT_MADCTL);
rotation = m % 4;
switch (rotation) {
case 0: // Portrait
writedata(TFT_MAD_BGR | TFT_MAD_SS);
_width = TFT_WIDTH;
_height = TFT_HEIGHT;
break;
case 1: // Landscape (Portrait + 90)
writedata(TFT_MAD_MV | TFT_MAD_BGR);
_width = TFT_HEIGHT;
_height = TFT_WIDTH;
break;
case 2: // Inverter portrait
writedata(TFT_MAD_BGR | TFT_MAD_GS);
_width = TFT_WIDTH;
_height = TFT_HEIGHT;
break;
case 3: // Inverted landscape
writedata(TFT_MAD_MV | TFT_MAD_BGR | TFT_MAD_SS | TFT_MAD_GS);
_width = TFT_HEIGHT;
_height = TFT_WIDTH;
break;
}