RoBoard 110 and Arduino I2C

[hellu]

Hello!
I am trying to send some data on I2C to an Arduino Uno board but it`s not working at all. The Arduino doesn`t receive nothing. I`m programming in C#, below is my code on the RoBoard with the I2C. Is 0x30 a valid address for a slave device? The RoBoard is master and Arduino slave.

Code: Select all

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using RoBoIO_DotNet;
namespace I2C
{

class Program
{

static void Main(string[] args)
{

RoBoIO.roboio_SetRBVer(RoBoIO.RB_110);
if (RoBoIO.i2c_Initialize(RoBoIO.I2CIRQ_DISABLE) == false)
{

Console.WriteLine(RoBoIO.roboio_GetErrMsg());
}

else
{

RoBoIO.i2c0_SetSpeed(RoBoIO.I2CMODE_AUTO, 1100);
RoBoIO.i2c0master_StartN(0x30, RoBoIO.I2C_WRITE, 1);
RoBoIO.i2c0master_WriteN(0x11);
RoBoIO.i2c_Close();
}

}

}

}

[josh]

Is 0x30 a valid address for a slave device?

If slave device is 7-bit adrress, set RoBoIO.i2c0master_StartN(0x30, RoBoIO.I2C_WRITE, 1).

If slave device is 8-bit adrress, set RoBoIO.i2c0master_StartN(0x30>>1, RoBoIO.I2C_WRITE, 1).

Because the function RoBoIO.i2c0master_StartN sends (7-bit address) + (write/read bit), the slave device recieve (address << 1) + (0/1) in fact.