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Problems with Some sensors on PiStorms v2 #900

Open jabrena opened 7 years ago

jabrena commented 7 years ago

Hi,

I am releasing the new version of EV3Dev-lang-java and I noticed that some sensors doesn´t run with PiStormsV2.

I attach the logs for every example:

EV3USSensor

package ev3dev.sensors.ev3;

import lejos.hardware.port.SensorPort;
import lejos.robotics.SampleProvider;
import lejos.utility.Delay;

public class USSensorDemo {

    private static EV3UltrasonicSensor us1 = new EV3UltrasonicSensor(SensorPort.S1);

    public static void main(String[] args) {

        final SampleProvider sp = us1.getDistanceMode();
        int distanceValue = 0;

        final int iteration_threshold = 100;
        for(int i = 0; i <= iteration_threshold; i++) {

            float [] sample = new float[sp.sampleSize()];
            sp.fetchSample(sample, 0);
            distanceValue = (int)sample[0];

            System.out.println("Iteration: " + i + ", Distance: " + distanceValue);

            Delay.msDelay(500);
        }

    }

}
java -server -jar /home/robot/ev3dev-lang-java-all-0.6.1-RELEASE.jar
ev3dev#7|2017-06-07 19:08:09 [main] TRACE ev3dev.hardware.EV3DevPlatforms - /sys/class/power_supply/legoev3-battery
ev3dev#7|2017-06-07 19:08:09 [main] TRACE ev3dev.hardware.EV3DevPlatforms - Detected platform: PISTORMS
ev3dev#7|2017-06-07 19:08:09 [main] TRACE ev3dev.hardware.EV3DevPlatforms - /sys/class/power_supply/legoev3-battery
ev3dev#7|2017-06-07 19:08:09 [main] TRACE ev3dev.hardware.EV3DevPlatforms - Detected platform: PISTORMS
ev3dev#7|2017-06-07 19:08:09 [main] TRACE ev3dev.hardware.EV3DevPlatforms - /sys/class/power_supply/legoev3-battery
ev3dev#7|2017-06-07 19:08:09 [main] TRACE ev3dev.hardware.EV3DevPlatforms - Detected platform: PISTORMS
ev3dev#7|2017-06-07 19:08:09 [main] DEBUG ev3dev.hardware.EV3DevDevice - Detecting device on port: pistorms:BBS2
ev3dev#7|2017-06-07 19:08:09 [main] TRACE ev3dev.utils.Sysfs - ls /sys/class/lego-port
ev3dev#7|2017-06-07 19:08:09 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-port/port0/address
ev3dev#7|2017-06-07 19:08:09 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-port/port1/address
ev3dev#7|2017-06-07 19:08:09 [main] DEBUG ev3dev.hardware.EV3DevDevice - Detected port on path: /sys/class/lego-port/port1/address
ev3dev#7|2017-06-07 19:08:09 [main] INFO  ev3dev.hardware.EV3DevSensorDevice - detected lego port: /sys/class/lego-port/port1
ev3dev#7|2017-06-07 19:08:09 [main] TRACE ev3dev.utils.Sysfs - echo ev3-uart > /sys/class/lego-port/port1/mode
ev3dev#7|2017-06-07 19:08:09 [main] TRACE ev3dev.utils.Sysfs - echo lego-ev3-us > /sys/class/lego-port/port1/set_device
ev3dev#7|2017-06-07 19:08:10 [main] DEBUG ev3dev.hardware.EV3DevDevice - Detecting device on port: pistorms:BBS2
ev3dev#7|2017-06-07 19:08:10 [main] TRACE ev3dev.utils.Sysfs - ls /sys/class/lego-sensor
ev3dev#7|2017-06-07 19:08:10 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor16/address
ev3dev#7|2017-06-07 19:08:10 [main] DEBUG ev3dev.hardware.EV3DevDevice - Detected port on path: /sys/class/lego-sensor/sensor16/address
ev3dev#7|2017-06-07 19:08:10 [main] INFO  ev3dev.hardware.EV3DevSensorDevice - detected lego sensor: /sys/class/lego-sensor/sensor16
ev3dev#7|2017-06-07 19:08:10 [main] TRACE ev3dev.utils.Sysfs - echo US-DIST-CM > /sys/class/lego-sensor/sensor16/mode
ev3dev#7|2017-06-07 19:08:11 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor16/value0
ev3dev#7|Iteration: 0, Distance: 255
ev3dev#7|2017-06-07 19:08:11 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor16/value0
ev3dev#7|Iteration: 1, Distance: 255
ev3dev#7|2017-06-07 19:08:12 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor16/value0
ev3dev#7|Iteration: 2, Distance: 255
ev3dev#7|2017-06-07 19:08:12 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor16/value0
ev3dev#7|Iteration: 3, Distance: 255
ev3dev#7|2017-06-07 19:08:13 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor16/value0
ev3dev#7|Iteration: 4, Distance: 255
ev3dev#7|2017-06-07 19:08:13 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor16/value0
ev3dev#7|Iteration: 5, Distance: 255
ev3dev#7|2017-06-07 19:08:14 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor16/value0
ev3dev#7|Iteration: 6, Distance: 255
ev3dev#7|2017-06-07 19:08:14 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor16/value0
ev3dev#7|Iteration: 7, Distance: 255
ev3dev#7|2017-06-07 19:08:15 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor16/value0
ev3dev#7|Iteration: 8, Distance: 255
ev3dev#7|2017-06-07 19:08:15 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor16/value0
ev3dev#7|Iteration: 9, Distance: 255
ev3dev#7|2017-06-07 19:08:16 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor16/value0
ev3dev#7|Iteration: 10, Distance: 255
ev3dev#7|2017-06-07 19:08:16 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor16/value0
ev3dev#7|Iteration: 11, Distance: 255
ev3dev#7|2017-06-07 19:08:17 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor16/value0
ev3dev#7|Iteration: 12, Distance: 255
ev3dev#7|2017-06-07 19:08:17 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor16/value0
ev3dev#7|Iteration: 13, Distance: 255
ev3dev#7|2017-06-07 19:08:18 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor16/value0
ev3dev#7|Iteration: 14, Distance: 255
ev3dev#7|2017-06-07 19:08:18 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor16/value0
ev3dev#7|Iteration: 15, Distance: 255

EV3IRSensor

package ev3dev.sensors.ev3;

import ev3dev.sensors.Battery;
import lejos.hardware.port.SensorPort;
import lejos.robotics.SampleProvider;
import lejos.utility.Delay;

public class IRSensorDemo {

    private static EV3IRSensor ir1 = new EV3IRSensor(SensorPort.S1);

    private static int HALF_SECOND = 500;

    public static void main(String[] args) {

        System.out.println(Battery.getInstance().getVoltage());

        final SampleProvider sp = ir1.getDistanceMode();
        int distanceValue = 0;

        //Control loop
        final int iteration_threshold = 50;
        for(int i = 0; i <= iteration_threshold; i++) {

            float [] sample = new float[sp.sampleSize()];
            sp.fetchSample(sample, 0);
            distanceValue = (int)sample[0];

            System.out.println("Iteration: {}" + i);
            System.out.println("Distance: {}" + distanceValue);

            Delay.msDelay(HALF_SECOND);
        }

        System.out.println(Battery.getInstance().getVoltage());

    }

}
java -server -jar /home/robot/ev3dev-lang-java-all-0.6.1-RELEASE.jar
ev3dev#1|2017-06-07 19:12:33 [main] TRACE ev3dev.hardware.EV3DevPlatforms - /sys/class/power_supply/legoev3-battery
ev3dev#1|2017-06-07 19:12:33 [main] TRACE ev3dev.hardware.EV3DevPlatforms - Detected platform: PISTORMS
ev3dev#1|2017-06-07 19:12:33 [main] TRACE ev3dev.hardware.EV3DevPlatforms - /sys/class/power_supply/legoev3-battery
ev3dev#1|2017-06-07 19:12:33 [main] TRACE ev3dev.hardware.EV3DevPlatforms - Detected platform: PISTORMS
ev3dev#1|2017-06-07 19:12:33 [main] TRACE ev3dev.hardware.EV3DevPlatforms - /sys/class/power_supply/legoev3-battery
ev3dev#1|2017-06-07 19:12:33 [main] TRACE ev3dev.hardware.EV3DevPlatforms - Detected platform: PISTORMS
ev3dev#1|2017-06-07 19:12:33 [main] DEBUG ev3dev.hardware.EV3DevDevice - Detecting device on port: pistorms:BBS2
ev3dev#1|2017-06-07 19:12:33 [main] TRACE ev3dev.utils.Sysfs - ls /sys/class/lego-port
ev3dev#1|2017-06-07 19:12:33 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-port/port0/address
ev3dev#1|2017-06-07 19:12:33 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-port/port1/address
ev3dev#1|2017-06-07 19:12:33 [main] DEBUG ev3dev.hardware.EV3DevDevice - Detected port on path: /sys/class/lego-port/port1/address
ev3dev#1|2017-06-07 19:12:33 [main] INFO  ev3dev.hardware.EV3DevSensorDevice - detected lego port: /sys/class/lego-port/port1
ev3dev#1|2017-06-07 19:12:33 [main] TRACE ev3dev.utils.Sysfs - echo ev3-uart > /sys/class/lego-port/port1/mode
ev3dev#1|2017-06-07 19:12:33 [main] TRACE ev3dev.utils.Sysfs - echo lego-ev3-ir > /sys/class/lego-port/port1/set_device
ev3dev#1|2017-06-07 19:12:34 [main] DEBUG ev3dev.hardware.EV3DevDevice - Detecting device on port: pistorms:BBS2
ev3dev#1|2017-06-07 19:12:34 [main] TRACE ev3dev.utils.Sysfs - ls /sys/class/lego-sensor
ev3dev#1|2017-06-07 19:12:34 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor18/address
ev3dev#1|2017-06-07 19:12:34 [main] DEBUG ev3dev.hardware.EV3DevDevice - Detected port on path: /sys/class/lego-sensor/sensor18/address
ev3dev#1|2017-06-07 19:12:34 [main] INFO  ev3dev.hardware.EV3DevSensorDevice - detected lego sensor: /sys/class/lego-sensor/sensor18
ev3dev#1|2017-06-07 19:12:34 [main] TRACE ev3dev.hardware.EV3DevPlatforms - /sys/class/power_supply/legoev3-battery
ev3dev#1|2017-06-07 19:12:34 [main] TRACE ev3dev.hardware.EV3DevPlatforms - Detected platform: PISTORMS
ev3dev#1|2017-06-07 19:12:34 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/power_supply/pistorms-battery/voltage_now
ev3dev#1|7.96
ev3dev#1|2017-06-07 19:12:34 [main] TRACE ev3dev.utils.Sysfs - echo IR-PROX > /sys/class/lego-sensor/sensor18/mode
ev3dev#1|2017-06-07 19:12:34 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor18/value0
ev3dev#1|Iteration: {}0
ev3dev#1|Distance: {}0
ev3dev#1|2017-06-07 19:12:34 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor18/value0
ev3dev#1|Iteration: {}1
ev3dev#1|Distance: {}0
ev3dev#1|2017-06-07 19:12:35 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor18/value0
ev3dev#1|Iteration: {}2
ev3dev#1|Distance: {}0
ev3dev#1|2017-06-07 19:12:35 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor18/value0
ev3dev#1|Iteration: {}3
ev3dev#1|Distance: {}0
ev3dev#1|2017-06-07 19:12:36 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor18/value0
ev3dev#1|Iteration: {}4
ev3dev#1|Distance: {}0
ev3dev#1|2017-06-07 19:12:36 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor18/value0
ev3dev#1|Iteration: {}5
ev3dev#1|Distance: {}0
ev3dev#1|2017-06-07 19:12:37 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor18/value0
ev3dev#1|Iteration: {}6
ev3dev#1|Distance: {}0
ev3dev#1|2017-06-07 19:12:37 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor18/value0
ev3dev#1|Iteration: {}7
ev3dev#1|Distance: {}0
ev3dev#1|2017-06-07 19:12:38 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor18/value0
ev3dev#1|Iteration: {}8
ev3dev#1|Distance: {}0
ev3dev#1|2017-06-07 19:12:38 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor18/value0
ev3dev#1|Iteration: {}9
ev3dev#1|Distance: {}0
ev3dev#1|2017-06-07 19:12:39 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor18/value0
ev3dev#1|Iteration: {}10

EV3GyroSensor

package ev3dev.sensors.ev3;

import ev3dev.sensors.Battery;
import lejos.hardware.port.SensorPort;
import lejos.robotics.SampleProvider;
import lejos.utility.Delay;

public class GyroSensorDemo {

    //Robot Configuration
    private static EV3GyroSensor gyroSensor = new EV3GyroSensor(SensorPort.S1);

    //Configuration
    private static int HALF_SECOND = 500;

    public static void main(String[] args) {

        final SampleProvider sp = gyroSensor.getAngleMode();
        int value = 0;

        //Control loop
        final int iteration_threshold = 20;
        for(int i = 0; i <= iteration_threshold; i++) {

            float [] sample = new float[sp.sampleSize()];
            sp.fetchSample(sample, 0);
            value = (int)sample[0];

            System.out.println("Iteration: " + i);
            System.out.println("Gyro angle: " + value);

            Delay.msDelay(HALF_SECOND);
        }

        System.out.println(Battery.getInstance().getVoltage());

    }

}
java -server -jar /home/robot/ev3dev-lang-java-all-0.6.1-RELEASE.jar
ev3dev#1|2017-06-07 19:17:04 [main] TRACE ev3dev.hardware.EV3DevPlatforms - /sys/class/power_supply/legoev3-battery
ev3dev#1|2017-06-07 19:17:04 [main] TRACE ev3dev.hardware.EV3DevPlatforms - Detected platform: PISTORMS
ev3dev#1|2017-06-07 19:17:04 [main] TRACE ev3dev.hardware.EV3DevPlatforms - /sys/class/power_supply/legoev3-battery
ev3dev#1|2017-06-07 19:17:04 [main] TRACE ev3dev.hardware.EV3DevPlatforms - Detected platform: PISTORMS
ev3dev#1|2017-06-07 19:17:04 [main] TRACE ev3dev.hardware.EV3DevPlatforms - /sys/class/power_supply/legoev3-battery
ev3dev#1|2017-06-07 19:17:04 [main] TRACE ev3dev.hardware.EV3DevPlatforms - Detected platform: PISTORMS
ev3dev#1|2017-06-07 19:17:04 [main] DEBUG ev3dev.hardware.EV3DevDevice - Detecting device on port: pistorms:BBS2
ev3dev#1|2017-06-07 19:17:04 [main] TRACE ev3dev.utils.Sysfs - ls /sys/class/lego-port
ev3dev#1|2017-06-07 19:17:04 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-port/port0/address
ev3dev#1|2017-06-07 19:17:04 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-port/port1/address
ev3dev#1|2017-06-07 19:17:04 [main] DEBUG ev3dev.hardware.EV3DevDevice - Detected port on path: /sys/class/lego-port/port1/address
ev3dev#1|2017-06-07 19:17:04 [main] INFO  ev3dev.hardware.EV3DevSensorDevice - detected lego port: /sys/class/lego-port/port1
ev3dev#1|2017-06-07 19:17:04 [main] TRACE ev3dev.utils.Sysfs - echo ev3-uart > /sys/class/lego-port/port1/mode
ev3dev#1|2017-06-07 19:17:04 [main] TRACE ev3dev.utils.Sysfs - echo lego-ev3-gyro > /sys/class/lego-port/port1/set_device
ev3dev#1|2017-06-07 19:17:05 [main] DEBUG ev3dev.hardware.EV3DevDevice - Detecting device on port: pistorms:BBS2
ev3dev#1|2017-06-07 19:17:05 [main] TRACE ev3dev.utils.Sysfs - ls /sys/class/lego-sensor
ev3dev#1|2017-06-07 19:17:05 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor20/address
ev3dev#1|2017-06-07 19:17:05 [main] DEBUG ev3dev.hardware.EV3DevDevice - Detected port on path: /sys/class/lego-sensor/sensor20/address
ev3dev#1|2017-06-07 19:17:05 [main] INFO  ev3dev.hardware.EV3DevSensorDevice - detected lego sensor: /sys/class/lego-sensor/sensor20
ev3dev#1|2017-06-07 19:17:05 [main] TRACE ev3dev.utils.Sysfs - echo GYRO-ANG > /sys/class/lego-sensor/sensor20/mode
ev3dev#1|2017-06-07 19:17:06 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor20/value0
ev3dev#1|Iteration: 0
ev3dev#1|Gyro angle: -2550
ev3dev#1|2017-06-07 19:17:06 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor20/value0
ev3dev#1|Iteration: 1
ev3dev#1|Gyro angle: -2550
ev3dev#1|2017-06-07 19:17:07 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor20/value0
ev3dev#1|Iteration: 2
ev3dev#1|Gyro angle: -2550
ev3dev#1|2017-06-07 19:17:07 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor20/value0
ev3dev#1|Iteration: 3
ev3dev#1|Gyro angle: -2550
ev3dev#1|2017-06-07 19:17:08 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor20/value0
ev3dev#1|Iteration: 4
ev3dev#1|Gyro angle: -2550
ev3dev#1|2017-06-07 19:17:08 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor20/value0
ev3dev#1|Iteration: 5
ev3dev#1|Gyro angle: -2550
ev3dev#1|2017-06-07 19:17:09 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor20/value0
ev3dev#1|Iteration: 6
ev3dev#1|Gyro angle: -2550
ev3dev#1|2017-06-07 19:17:09 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor20/value0
ev3dev#1|Iteration: 7
ev3dev#1|Gyro angle: -2550
ev3dev#1|2017-06-07 19:17:10 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor20/value0
ev3dev#1|Iteration: 8
ev3dev#1|Gyro angle: -2550
ev3dev#1|2017-06-07 19:17:10 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor20/value0
ev3dev#1|Iteration: 9
ev3dev#1|Gyro angle: -2550
ev3dev#1|2017-06-07 19:17:11 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor20/value0
ev3dev#1|Iteration: 10

Anyone has reported this fact?

Image file:         ev3dev-jessie-rpi2-generic-2017-02-11
Kernel version:     4.4.47-19-ev3dev-rpi2
Board:              Raspberry Pi 3 Model B Rev 1.2
Revision:           a02082
Brickman:           0.8.1
ev3devKit:          0.4.3

Juan Antonio https://github.com/ev3dev-lang-java/ev3dev-lang-java

Related issue: https://github.com/ev3dev-lang-java/ev3dev-lang-java/issues/301

dlech commented 7 years ago

Can you provide examples in bash or python that can be run on ev3dev without installing additional software or compiling?

Are you setting up the port first? PiStorms is like BrickPi in that it cannot automatically detect sensors, so you have to set the port to ev3-uart mode and then write to the set_device attribute. Then you can use the lego-sensor device.

jabrena commented 7 years ago

Yes, for the last case you have the bash traces. I will explain.

ev3dev#1|2017-06-07 19:17:04 [main] TRACE ev3dev.utils.Sysfs - echo ev3-uart > /sys/class/lego-port/port1/mode
ev3dev#1|2017-06-07 19:17:04 [main] TRACE ev3dev.utils.Sysfs - echo lego-ev3-gyro > /sys/class/lego-port/port1/set_device
ev3dev#1|2017-06-07 19:17:05 [main] DEBUG ev3dev.hardware.EV3DevDevice - Detecting device on port: pistorms:BBS2
ev3dev#1|2017-06-07 19:17:05 [main] TRACE ev3dev.utils.Sysfs - ls /sys/class/lego-sensor
ev3dev#1|2017-06-07 19:17:05 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor20/address
ev3dev#1|2017-06-07 19:17:05 [main] DEBUG ev3dev.hardware.EV3DevDevice - Detected port on path: /sys/class/lego-sensor/sensor20/address
ev3dev#1|2017-06-07 19:17:05 [main] INFO  ev3dev.hardware.EV3DevSensorDevice - detected lego sensor: /sys/class/lego-sensor/sensor20
ev3dev#1|2017-06-07 19:17:05 [main] TRACE ev3dev.utils.Sysfs - echo GYRO-ANG > /sys/class/lego-sensor/sensor20/mode
ev3dev#1|2017-06-07 19:17:06 [main] TRACE ev3dev.utils.Sysfs - cat /sys/class/lego-sensor/sensor20/value0
ev3dev#1|Iteration: 0
ev3dev#1|Gyro angle: -2550

As you say, for BrickPi+ & PiStorms, it is necessary to set the port to operate with the sensor:

echo ev3-uart > /sys/class/lego-port/port1/mode
echo lego-ev3-gyro > /sys/class/lego-port/port1/set_device

Later, once you have the port in the right way, it is possible to set the mode and later view the values:

echo GYRO-ANG > /sys/class/lego-sensor/sensor20/mode
cat /sys/class/lego-sensor/sensor20/value0
-2550

If you observe, the logs from ev3dev-lang-java try to explain a bash session. :) If you observe, the value is rare. The same idea is for other cases.

Juan Antonio

dlech commented 7 years ago

Is this still a problem?