/// <summary>
/// Constructor for a PCA9534 (or similar) GPIO Expander.
/// </summary>
/// <param name="bus">I<sup>2</sup>C bus controller.</param>
/// <param name="addr">I<sup>2</sup>C slave address.</param>
/// <param name="config">GPIO pin configuration.</param>
/// <param name="states">Initial output states.</param>
public Device(IO.Interfaces.I2C.Bus bus, int addr,
byte config = AllInputs, byte states = AllOff)
{
this.dev = new IO.Interfaces.I2C.Device(bus, addr);
this.Write(ConfigurationReg, config);
this.Write(InputPolarityReg, AllNormal);
this.Write(OutputPortReg, states);
}
/// <summary>
/// Constructor for an HDC1080 temperature and humidity sensor object.
/// </summary>
/// <param name="bus">I<sup>2</sup>C bus controller.</param>
public Device(IO.Interfaces.I2C.Bus bus)
{
this.dev = new IO.Interfaces.I2C.Device(bus, 0x40);
// Issue software reset
this.Write(RegConfiguration, 0x8000);
System.Threading.Thread.Sleep(100);
// Heater off, acquire temp or humidity, 14 bit resolutions
this.Write(RegConfiguration, 0x0000);
}
/// <summary>
/// Constructor for a single MCP23017 device.
/// </summary>
/// <param name="bus">I<sup>2</sup>C bus controller object.</param>
/// <param name="addr">I<sup>2</sup>C slave address.</param>
public Device(IO.Interfaces.I2C.Bus bus, int addr)
{
// Create an I2C device object
dev = new IO.Interfaces.I2C.Device(bus, addr);
// Configure the MCP23017
WriteRegister8(IOCON, 0x00);
WriteRegister16(IODIR, 0xFFFF);
WriteRegister16(IPOL, 0x0000);
WriteRegister16(GPINTEN, 0x0000);
WriteRegister16(DEFVAL, 0x0000);
WriteRegister16(INTCON, 0x0000);
}
/// <summary>
/// Constructor for a single AD5593R device.
/// </summary>
/// <param name="bus">I<sup>2</sup>C bus controller object.</param>
/// <param name="addr">I<sup>2</sup>C slave address.</param>
public Device(IO.Interfaces.I2C.Bus bus, int addr)
{
// Create an I2C device object
dev = new IO.Interfaces.I2C.Device(bus, addr);
// Configure the ADC5593R.
WriteRegister(MODE_CONFIGURATION, REG_CONTROL, reg_control);
WriteRegister(MODE_CONFIGURATION, REG_POWERDOWN, reg_powerdown);
WriteRegister(MODE_CONFIGURATION, REG_LDAC_MODE, 0x0000);
WriteRegister(MODE_CONFIGURATION, REG_ADC_PIN_CONFIG, reg_pin_config_adc);
WriteRegister(MODE_CONFIGURATION, REG_DAC_PIN_CONFIG, reg_pin_config_dac);
WriteRegister(MODE_CONFIGURATION, REG_GPIO_READ_CONFIG, reg_pin_config_gpio_read);
WriteRegister(MODE_CONFIGURATION, REG_GPIO_WRITE_CONFIG, reg_pin_config_gpio_write);
WriteRegister(MODE_CONFIGURATION, REG_PULLDOWN_CONFIG, reg_pin_config_pulldown);
WriteRegister(MODE_CONFIGURATION, REG_OPENDRAIN_CONFIG, reg_pin_config_opendrain);
WriteRegister(MODE_CONFIGURATION, REG_TRISTATE_CONFIG, reg_pin_config_tristate);
WriteRegister(MODE_CONFIGURATION, REG_GPIO_WRITE_DATA, reg_gpio_write_data);
}
/// <summary>
/// Constructor for a single PCA9685 device.
/// </summary>
/// <param name="bus">I<sup>2</sup>C bus controller object.</param>
/// <param name="addr">I<sup>2</sup>C slave address.</param>
/// <param name="freq">PWM pulse frequency. Default is 50 Hz.</param>
/// <param name="clock">PCA9685 clock source.
/// Use <c>INTERNAL_CLOCK</c>c> to select the internal 25 MHz clock generator.
/// </param>
public Device(IO.Interfaces.I2C.Bus bus, int addr, int freq = 50,
int clock = INTERNAL_CLOCK)
{
// Validate parameters
if (freq < 1)
{
throw new System.Exception("Invalid PWM pulse frequency");
}
if ((clock != INTERNAL_CLOCK) && ((clock < MIN_CLOCK) || (clock > MAX_CLOCK)))
{
throw new System.Exception("Invalid clock frequency");
}
dev = new IO.Interfaces.I2C.Device(bus, addr);
this.freq = freq;
cmd = new byte[5];
resp = new byte[4];
if (clock == INTERNAL_CLOCK)
{
// Use internal 25 MHz clock
WriteRegister((byte)Registers.MODE1, 0x30); // Set SLEEP
WriteRegister((byte)Registers.PRE_SCALE, (byte)(25000000 / 4096 / freq - 1));
WriteRegister((byte)Registers.MODE1, 0x20); // Clear SLEEP
}
else
{
// Use external clock
WriteRegister((byte)Registers.MODE1, 0x70); // Set SLEEP
WriteRegister((byte)Registers.PRE_SCALE, (byte)(clock / 4096 / freq - 1));
WriteRegister((byte)Registers.MODE1, 0x60); // Clear SLEEP
}
WriteRegister((byte)Registers.MODE2, 0x0C);
}
/// <summary>
/// Constructor for an TH02 temperature and humidity sensor object.
/// </summary>
/// <param name="bus">I<sup>2</sup>C bus controller.</param>
public Device(IO.Interfaces.I2C.Bus bus)
{
dev = new IO.Interfaces.I2C.Device(bus, 0x40);
Write(regConfig, cmdInit);
}
/// <summary>
/// Constructor for a PCA8574 (or similar) GPIO Expander.
/// </summary>
/// <param name="bus">I<sup>2</sup>C bus controller.</param>
/// <param name="addr">I<sup>2</sup>C slave address.</param>
/// <param name="states">Initial output states.</param>
public Device(IO.Interfaces.I2C.Bus bus, int addr, byte states = 0xFF)
{
this.dev = new IO.Interfaces.I2C.Device(bus, addr);
this.Write(states);
}