digital-read
xod/gpio/digital-read
Reads digital signal value from board GPIO port.
Possible errors:
— Invalid port
digital-read
@/digital-read
Reads digital signal value from board GPIO port.
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
Previously known as xod/core/digital-input.
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);
emitValue<output_SIG>(ctx, ::digitalRead(constant_input_PORT));
emitValue<output_DONE>(ctx, 1);
}
}