TftReadPixel()
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TftReadPixel(wX_Pixel As Word, wY_Pixel As Word), Word
|
Parameter |
Description |
|
wX_Pixel |
X-coordinate |
|
wY_Pixel |
Y-coordinate |
|
Return value |
16-bit RGB565 color |
This procedure reads a pixel at position (wX_Pixel, wY_Pixel) from the TFT screen's graphic RAM and returns its color.
Note: TFT GRAM readback is interface- and controller-dependent. On supported SPI variants, the library temporarily switches to a single-wire read sequence on the MOSI/SDA line, so pixel reads are considerably slower than writes.
Some controller/interface combinations do not provide GRAM readback; in those cases the routine returns 0.
TftReadPixel(20,30)
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