fastread-pullup
robertspark/faster-digital-read-write/fastread-pullup
Faster read of 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
fastread-pullup
@/fastread-pullup
Faster read of 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 write to
UPDpulse
Triggers new read
DONEpulse
Fires on writing complete
SIGboolean
The last read signal value
C++ implementation
#pragma XOD error_raise enable
#pragma XOD require "https://github.com/robertspark/FastDigitalWrite"
{{#global}}
#include <digitalWriteFast.h>
{{/global}}
struct State {
};
{{ GENERATED_CODE }}
void evaluate(Context ctx) {
if (!isInputDirty<input_UPD>(ctx))
return;
const uint8_t port = getValue<input_PORT>(ctx);
if (!isValidDigitalPort(port)) {
raiseError<output_DONE>(ctx);
return;
}
pinModeFast(port, INPUT_PULLUP);
emitValue<output_SIG>(ctx, digitalReadFast(port));
emitValue<output_DONE>(ctx, 1);
}