public static void Main()
{
//our 10 bit address
const ushort address10Bit = 0x1001; //binary 1000000001 = 129
const byte addressMask = 0x78; //reserved address mask 011110XX for 10 bit addressing
//first MSB part of address
ushort address1 = addressMask | (address10Bit >> 8); //is 7A and contains the two MSB of the 10 bit address
I2CDevice.Configuration config = new I2CDevice.Configuration(address1, 100);
I2CDevice device = new I2CDevice(config);
//second LSB part of address
byte address2 = (byte)(address10Bit & 0xFF); //the other 8 bits (LSB)
byte[] address2OutBuffer = new byte[] { address2 };
I2CDevice.I2CWriteTransaction addressWriteTransaction = device.CreateWriteTransaction(address2OutBuffer);
//prepare buffer to write data
byte[] outBuffer = new byte[] { 0xAA };
I2CDevice.I2CWriteTransaction writeTransaction = device.CreateWriteTransaction(outBuffer);
//prepare buffer to read data
byte[] inBuffer = new byte[4];
I2CDevice.I2CReadTransaction readTransaction = device.CreateReadTransaction(inBuffer);
//execute transactions
I2CDevice.I2CTransaction[] transactions =
new I2CDevice.I2CTransaction[] { addressWriteTransaction, writeTransaction, readTransaction };
device.Execute(transactions, 100);
}
public I2CDevice.I2CReadTransaction CreateReadTransaction(byte[] buffer)
{
if (this.isDisposed)
{
throw new ObjectDisposedException();
}
return(singletonDevice.CreateReadTransaction(buffer));
}
public int Read(XI2CDevice.Configuration configuration, byte[] data)
{
_device.Config = configuration;
XI2CDevice.I2CReadTransaction read = XI2CDevice.CreateReadTransaction(data);
return(_device.Execute(new XI2CDevice.I2CTransaction[] { read }, _readTimeout));
}
void readValues(I2CDevice adxl345, short[] result)
{
byte[] values = new byte[6];
I2CDevice.I2CTransaction[] xActions = new I2CDevice.I2CTransaction[2];
byte[] RegisterNum = new byte[1] { valuesRegister };
xActions[0] = adxl345.CreateWriteTransaction(RegisterNum);
xActions[1] = adxl345.CreateReadTransaction(values);
if (adxl345.Execute(xActions, 1000) == 0)
throw new Exception("Unable to read accelerometer");
result[0] = (short)(values[0] + (values[1] << 8));
result[1] = (short)(values[2] + (values[3] << 8));
result[2] = (short)(values[4] + (values[5] << 8));
}
public int ReadRegister(XI2CDevice.Configuration configuration, byte register, byte[] data, int length)
{
_device.Config = configuration;
byte[] tmp = new byte[length];
XI2CDevice.I2CWriteTransaction write = XI2CDevice.CreateWriteTransaction(new byte[] { register });
XI2CDevice.I2CReadTransaction read = XI2CDevice.CreateReadTransaction(tmp);
int transferred = _device.Execute(new XI2CDevice.I2CTransaction[] { write, read }, _readTimeout);
if (transferred == (length + 1))
{
Array.Copy(tmp, data, transferred - 1);
return(transferred - 1);
}
return(-1);
}
100 //clockrate in KHz
);
I2CDevice device = new I2CDevice(config);
//prepare buffer to write byte AA
byte[] outBuffer = new byte[] { 0xAA };
I2CDevice.I2CWriteTransaction writeTransaction = device.CreateWriteTransaction(outBuffer);
//prepare buffer to read four bytes
byte[] inBuffer = new byte[4];
I2CDevice.I2CReadTransaction readTransaction = device.CreateReadTransaction(inBuffer);
//execute both transactions
I2CDevice.I2CTransaction[] transactions =
new I2CDevice.I2CTransaction[] { writeTransaction, readTransaction };
int transferred = device.Execute(transactions,
100 //timeout in ms
);
//transferred bytes should be 1 + 4 = 5
}
}
}
