requestInput method
void
requestInput({
- String? consumer,
- Bias bias = Bias.unknown,
- ActiveState activeState = ActiveState.high,
- Set<
SignalEdge> triggers = const {},
Requests ownership of a GPIO line with the given configuration.
If ProxyGpiod.supportsBias is false, bias
must be null
,
otherwise a UnsupportedError will be thrown.
Only a free line can be requested.
The ownership status in undefined until the Future
returned by request
completes.
Implementation
void requestInput(
{String? consumer,
Bias bias = Bias.unknown,
ActiveState activeState = ActiveState.high,
Set<SignalEdge> triggers = const {}}) {
ArgumentError.checkNotNull(activeState, "activeState");
ArgumentError.checkNotNull(triggers, "triggers");
_checkSupportsBiasValue(bias);
// we need to lock both info and ownership.
/*return
_synchronizedWrite(() async {
if (_requested) {
throw StateError("Can't request line because it is already requested.");
}*/
_ProxyGpiodPlatformSide.requestLine(
lineHandle: _lineHandle,
consumer: consumer,
direction: LineDirection.input,
bias: bias,
activeState: activeState,
triggers: triggers);
_info = _ProxyGpiodPlatformSide.getLineInfo(_lineHandle);
// _requested = true;
//});
}