set-backlight
wayland/text-lcd-i2c/set-backlight
Turns on or off the backlight of the I²C text LCD.
set-backlight
@/set-backlight
Turns on or off the backlight of the I²C text LCD.
DEV@/text-lcd-i2c-device
A text-lcd-i2c-device.
BLboolean
Backlight enable/disable
DOpulse
Applies `BL` value to the text LCD backlight
DONEpulse
Fires when backlight is updated
DEV'@/text-lcd-i2c-device
A text-lcd-i2c-device.
C++ implementation
#pragma XOD evaluate_on_pin disable
#pragma XOD evaluate_on_pin enable input_DO
node {
void evaluate(Context ctx) {
auto t = getValue<input_DEV>(ctx);
if (isInputDirty<input_DO>(ctx)) {
t.lcd->setBacklight(getValue<input_BL>(ctx));
emitValue<output_DONE>(ctx, 1);
}
emitValue<output_DEVU0027>(ctx, t);
}
}