I2C motor driver problem

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#1

I have:
NetduinoPlus (Micro Framework v4.1)

Twig I2C Motor Driver http://garden.seeedstudio.com/index.php?title=Twig_-_I2C_Motor_Driver

Using I2CBus class http://forums.netduino.com/index.php?/topic/563-i2cbus/page__p__4156__hl__i2cbus__fromsearch__1#entry4156

Write TWIGMotorDriver class

public class TWIGMotorDriver
	{
		private I2CDevice.Configuration _slaveConfig;
		private int TransactionTimeout = 1000;

		public TWIGMotorDriver(byte address)
		{
			_slaveConfig = new I2CDevice.Configuration(address, 100);
		}

		public void BothMotorsSpeed(byte speed) {
			I2CBus.GetInstance().WriteRegister(_slaveConfig, 0x82, new byte[2] { speed, speed }, TransactionTimeout);
		}

		public void Motor1Speed(byte speed) {
			I2CBus.GetInstance().WriteRegister(_slaveConfig, 0xA1, new byte[2] { speed, 0x0 }, TransactionTimeout);
		}

		public void Motor2Speed(byte speed) {
			I2CBus.GetInstance().WriteRegister(_slaveConfig, 0xA5, new byte[2] { speed, 0x0 }, TransactionTimeout);
		}
	}

and Program.cs

public static void Main()
		{
			I2CBus bus = I2CBus.GetInstance();

			TWIGMotorDriver motorDriver = new TWIGMotorDriver(0x28);
			motorDriver.BothMotorsSpeed(255);

			Thread.Sleep(Timeout.Infinite);
		}

Motor driver not working, output voltage is 0 for both channels.

Help me please to start this motor driver.
Thank’s

#2

I don’t know about NetduinoPlus (Micro Framework v4.1), you can try with Arduino or Seeeduino first. I think that maybe the I2C library problem; It works fine with Aduino-0019 but I experience some problem with Arduino-0022, and solve the incompatiblity by add delay() at the end of each transmission. You can try adding delay() too.

#3

Motor Driver works fine. They were problem with using I2CBus class.

Right code fot TWIGMotorDriver is:

public enum Direction {
		Forward = 0x01,
		Back = 0x2,
		Stop = 0x3
	};

	class TWIGMotorDriver {
		private I2CDevice.Configuration _slaveConfig;
		private int TransactionTimeout = 1000;

		public TWIGMotorDriver(byte address) {
			_slaveConfig = new I2CDevice.Configuration(address, 25);
		}

		public void BothMotorsSpeed(byte speed, Direction direction) {
			Motor1Speed(speed, direction);
			Motor2Speed(speed, direction);
		}

		public void Motor1Speed(byte speed, Direction direction) {
			I2CBus.GetInstance().Write(_slaveConfig, new byte[] { 0xA5, (byte)direction, speed }, 1000);
		}

		public void Motor2Speed(byte speed, Direction direction){
			I2CBus.GetInstance().Write(_slaveConfig, new byte[] { 0xA1, (byte)direction, speed }, 1000);
		}
	}