draw-pixel(wt-lcd-device)
wayland/wio-terminal-lcd/draw-pixel(wt-lcd-device)
Draw a pixel.
draw-pixel(wt-lcd-device)
@/draw-pixel(wt-lcd-device)
Draw a pixel.
DEV@/wt-lcd-device
An LCD device.
Xnumber
X coordinate of pixel.
Ynumber
Y coordinate of pixel.
Colorxod/color/color
Pixel color.
UPDpulse
Update.
Donepulse
Pulse on completion.
C++ implementation
#pragma XOD evaluate_on_pin disable
#pragma XOD evaluate_on_pin enable input_UPD
node {
void evaluate(Context ctx) {
// The node responds only if there is an input pulse
if (!isInputDirty<input_UPD>(ctx))
return;
// Get a pointer to the `TFT_eSPI tft` class instance
auto tft = getValue<input_DEV>(ctx);
XColor color24 = getValue<input_Color>(ctx);
uint16_t color16 = ((color24.r & 0xF8) << 8) | ((color24.g & 0xFC) << 3) | (color24.b >> 3);
tft -> drawPixel(getValue<input_X>(ctx), getValue<input_Y>(ctx), color16);
emitValue<output_Done>(ctx, 1);
}
}