/// <summary>
/// Read from sequential registers on the MCP23017 via I2C
/// </summary>
/// <param name="i2c">I2C Interface, probabally the Bus Pirate</param>
/// <param name="register">Base Register Address</param>
/// <returns>Values Read</returns>
private byte[] ReadRegisters(I2CInterface i2c, Register register, uint registerstoread)
{
//Set address pointer
byte opcode = (byte)(((this.Address % 8) << 1) | 0x40);
byte[] data = { opcode, (byte)register };
i2c.WriteThenRead(data, 0);
//Read data
opcode = (byte)(((this.Address % 8) << 1) | 0x41);
return(i2c.WriteThenRead(new byte[] { opcode }, registerstoread));
}
/// <summary>
/// Write to a register on the MCP23017 via I2C
/// </summary>
/// <param name="i2c">I2C Interface, probabally the Bus Pirate</param>
/// <param name="register">Register Address</param>
/// <param name="value">Value to write</param>
private void WriteRegister(I2CInterface i2c, Register register, byte value)
{
byte opcode = (byte)(((this.Address % 8) << 1) | 0x40);
byte[] data = { opcode, (byte)register, value };
i2c.WriteThenRead(data, 0);
}
/// <summary>
/// Write to sequential registers on the MCP23017 via I2C
/// </summary>
/// <param name="i2c">I2C Interface, probabally the Bus Pirate</param>
/// <param name="register">Base Register Address</param>
/// <param name="value">Value to write</param>
private void WriteRegisters(I2CInterface i2c, Register register, byte[] values)
{
byte opcode = (byte)(((this.Address % 8) << 1) | 0x40);
List <byte> data = new List <byte> {
opcode, (byte)register
};
data.AddRange(values);
i2c.WriteThenRead(data.ToArray(), 0);
}
/// <summary>
/// Write to sequential registers on the MCP23017 via I2C
/// </summary>
/// <param name="i2c">I2C Interface, probabally the Bus Pirate</param>
/// <param name="register">Base Register Address</param>
/// <param name="value">Value to write</param>
private void WriteRegisters(I2CInterface i2c, Register register, byte[] values)
{
byte opcode = (byte)(((this.Address % 8) << 1) | 0x40);
List<byte> data = new List<byte> { opcode, (byte)register };
data.AddRange(values);
i2c.WriteThenRead(data.ToArray(), 0);
}
/// <summary>
/// Write to a register on the MCP23017 via I2C
/// </summary>
/// <param name="i2c">I2C Interface, probabally the Bus Pirate</param>
/// <param name="register">Register Address</param>
/// <param name="value">Value to write</param>
private void WriteRegister(I2CInterface i2c, Register register, byte value)
{
byte opcode = (byte)(((this.Address % 8) << 1) | 0x40);
byte[] data = { opcode, (byte)register, value };
i2c.WriteThenRead(data, 0);
}
/// <summary>
/// Read from sequential registers on the MCP23017 via I2C
/// </summary>
/// <param name="i2c">I2C Interface, probabally the Bus Pirate</param>
/// <param name="register">Base Register Address</param>
/// <returns>Values Read</returns>
private byte[] ReadRegisters(I2CInterface i2c, Register register, uint registerstoread)
{
//Set address pointer
byte opcode = (byte)(((this.Address % 8) << 1) | 0x40);
byte[] data = { opcode, (byte)register };
i2c.WriteThenRead(data, 0);
//Read data
opcode = (byte)(((this.Address % 8) << 1) | 0x41);
return i2c.WriteThenRead(new byte[] {opcode}, registerstoread);
}
