digital-read-pullup
xod/gpio/digital-read-pullup
Reads a digital signal value from a board GPIO port with the internal built-in pull-up resistor enabled. It forces the resulting signal to be True if the wire on the port floats (is disconnected).
Possible errors:
— Invalid port
digital-read-pullup
@/digital-read-pullup
Reads a digital signal value from a board GPIO port with the internal built-in pull-up resistor enabled. It forces the resulting signal to be True if the wire on the port floats (is disconnected).
Possible errors:
— Invalid port
PORTport
Board port to read from
UPDpulse
Triggers new read
DONEpulse
Fires on reading complete
SIGboolean
The last read signal value
C++ implementation
#pragma XOD evaluate_on_pin disable
#pragma XOD evaluate_on_pin enable input_UPD
node {
void evaluate(Context ctx) {
static_assert(isValidDigitalPort(constant_input_PORT), "must be a valid digital port");
if (!isInputDirty<input_UPD>(ctx))
return;
::pinMode(constant_input_PORT, INPUT_PULLUP);
emitValue<output_SIG>(ctx, ::digitalRead(constant_input_PORT));
emitValue<output_DONE>(ctx, 1);
}
}