GyroExample crashes

[Jošt Novak]

Hello,

I’m trying to use EV3 gyro, which will be our main sensor for orientation. Running gyroExample, which is part of SD card image downloaded from monobrick website, always gives me -600 deg/sec.

If i try to compile gyroExample from sources and download it to EV3, it just crashes before printing anything to console. Same thing happens with my program which looks like this:

LcdConsole.WriteLine(“Test print…”);
EV3GyroSensor gyro = new EV3GyroSensor(SensorPort.In4 , GyroMode.Angle);
System.Threading.Thread.Sleep(5000);
for (int i = 0; i < 100; i++) {
LcdConsole.WriteLine(“Sensor value: ” + gyro.Read());
System.Threading.Thread.Sleep(1000);
}

Test print does not print, and program closes immediately.
I tried re-compilling MonoBrickFirmware library from sources (nothing changes).
Any idea what might be wrong?

Regards

[Jošt Novak]

Another thing:

I had similar problem with colorSensorExample.

Program located on SD card worked properly, but compiled program crashed before printing anything.
After removing this line:
LcdConsole.WriteLine(“Sensor value: ” + sensor.ReadAsString());
Program worked.

Regards

[Jošt Novak]

some extra info… Running compiled GyroExample form shell gives me this:

root@EV3:~# mono apps/GyroSensorExample2.exe

Unhandled Exception:
mono() [0x108e18]
mono() [0x109208]
mono() [0x109eec]
mono() [0x10ad14]
mono(mono_arm_throw_exception+0xf0) [0x15cdfc]

[ERROR] FATAL UNHANDLED EXCEPTION: System.TypeLoadException: Could not load type ‘GyroSensorExample.MainClass+<Main>c__AnonStorey0’ from assembly ‘GyroSensorExample, Version=1.0.5196.19288, Culture=neutral, PublicKeyToken=null’.

[Jošt Novak]

Solved!

I forgot to copy dll library.

Regards

[Anders Søborg]

Great that you where able to solve this… Welcome to the MonoBrick community

[Author]

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