/// <summary>
/// Read from PCA9685 register
/// </summary>
/// <param name="reg">PCA9685 register to read from</param>
/// <param name="value">value read from register</param>
/// <returns>StatusResults(FT260_STATUS, FT260_CONTROLLER_STATUS)</returns>
public UsbI2C.StatusResults Read(Reg reg, out byte value)
{
UsbI2C.StatusResults statusResults;
byte[] regValue = { (byte)reg };
byte[] readBytes = { 0 };
value = 0;
lock (_usbI2C)
{
if (!(statusResults = _usbI2C.Write(
_i2cAddress,
UsbI2C.FT260_I2C_FLAG.FT260_I2C_START,
regValue,
(uint)regValue.Length)).HasErrors())
{
if (!(statusResults = _usbI2C.Read(
_i2cAddress,
UsbI2C.FT260_I2C_FLAG.FT260_I2C_REPEATED_START_AND_STOP,
readBytes,
(uint)readBytes.Length)).HasErrors())
{
value = readBytes[0];
}
}
}
return(statusResults);;
}
/// <summary>
/// Read from PCF8574 port pins
/// </summary>
/// <param name="pins">value read from port pins</param>
/// <returns>StatusResults(FT260_STATUS, FT260_CONTROLLER_STATUS)</returns>
public UsbI2C.StatusResults Read(out byte pins)
{
UsbI2C.StatusResults statusResults;
byte[] result = new byte[1];
lock (_usbI2C)
{
statusResults = _usbI2C.Read(_i2cAddress,
UsbI2C.FT260_I2C_FLAG.FT260_I2C_START_AND_STOP,
result,
(uint)result.Length);
}
pins = result[0];
return(statusResults);
}
/// <summary>
/// Get a raw ADC reading
/// </summary>
/// <param name="channel">Channel0 - Channel3</param>
/// <param name="size">Size12Bit, Size14Bit, Size16Bit, Size18Bit</param>
/// <param name="pga">Gain1, Gain2, Gain4, Gain8</param>
/// <param name="reading">value of ADC channel read at size & gain</param>
/// <returns>StatusResults(FT260_STATUS, FT260_CONTROLLER_STATUS)</returns>
public UsbI2C.StatusResults ReadAdc(AdcChannel channel, AdcSize size, AdcPga pga, out uint reading)
{
UsbI2C.StatusResults statusResults;
reading = 0;
byte[] control = { 0 };
// start one-shot conversion on channel @ size and gain...
control[0] = (byte)(0x80 | (((int)channel & 3) << 5 | (((int)size & 3) << 2) | ((int)pga & 3)));
lock (_usbI2C)
{
statusResults = _usbI2C.Write(
_i2cAddress,
UsbI2C.FT260_I2C_FLAG.FT260_I2C_START_AND_STOP,
control,
(uint)control.Length);
}
if (statusResults.HasErrors())
{
return(statusResults);
}
// length of result depends upon size of conversion...
byte[] result;
if (size == AdcSize.Size18Bit)
{
result = new byte[4];
}
else
{
result = new byte[3];
}
// continuously read until conversion complete (/RDY bit = 1)...
do
{
lock (_usbI2C)
{
statusResults = _usbI2C.Read(
_i2cAddress,
UsbI2C.FT260_I2C_FLAG.FT260_I2C_START_AND_STOP,
result,
(uint)result.Length);
}
if (statusResults.HasErrors())
{
return(statusResults);
}
Thread.Sleep(1);
} while ((result[result.Length - 1] & 0x80) == 0x00);
// assemble result depending upon size of conversion...
if (size == AdcSize.Size18Bit)
{
reading = ((uint)(result[0] & 3) << 16) | ((uint)result[1] << 8) | (uint)result[2];
}
else
{
reading = ((uint)result[0] << 8) | (uint)result[1];
}
return(statusResults);
}