This code doesn't have the sync() call I proposed. It should come after the
batch.
On Apr 15, 2014 4:43 PM, "Vic Wintriss" <[email protected]> wrote:
> Ytai:
>
> This code produces only 1.6875E-5…reading 2 times per second.
>
> import ioio.lib.api.DigitalOutput;
> import ioio.lib.api.IOIO;
> import ioio.lib.api.PulseInput;
> import ioio.lib.api.PulseInput.PulseMode;
> import ioio.lib.api.exception.ConnectionLostException;
>
> public class UltraSonicSensors
> {
> private static final int LEFT_ULTRASONIC_INPUT_PIN = 35;
> private static final int LEFT_STROBE_ULTRASONIC_OUTPUT_PIN = 15;
> private final PulseInput leftInput;
> private DigitalOutput leftStrobe;
> private float leftDistance;
> private IOIO ioio;
> public UltraSonicSensors(IOIO ioio) throws ConnectionLostException
> {
> this.leftInput = ioio.openPulseInput(LEFT_ULTRASONIC_INPUT_PIN,
> PulseMode.POSITIVE);
> this.leftStrobe =
> ioio.openDigitalOutput(LEFT_STROBE_ULTRASONIC_OUTPUT_PIN);
> this.ioio = ioio;
> }
>
> public void read() throws ConnectionLostException, InterruptedException
> {
> read(leftStrobe, leftInput);
> }
>
> private void read(DigitalOutput strobe, PulseInput input) throws
> ConnectionLostException, InterruptedException
> {
> ioio.beginBatch();
> strobe.write(true);
> strobe.write(false);
> ioio.endBatch();
> this.leftDistance = input.getDurationSync();
> }
>
> public float getLeftDistance()
> {
> return leftDistance;
> }
> }
> On Apr 15, 2014, at 4:27 PM, Ytai Ben-Tsvi <[email protected]> wrote:
>
> Can you send me the most "correct" version of your code that demonstrates
> the issue?
> I can probably make the necessary changes to sync () if this is indeed a
> problem.
> On Apr 15, 2014 4:03 PM, "Vic Wintriss" <[email protected]> wrote:
>
>> Thanks for the ideas. I've tried many combinations of synch,
>> readBuffered...etc, but unfortunately it still reads very small
>> numbers...probably measuring the last part of the trigger pulse. Is there
>> any way that I can delay the read by a couple of hundred micro seconds?
>> Could you do the..... sync() call "send" half inside the batch and "wait"
>> half outside thing?
>>
>> Thanks for all the help. The kids are trying to use these sensors for
>> iARoC 2014 (the International Autonomous Robot Competition) here in San
>> Diego.
>>
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