/// <summary>
/// Force the sensor to make a reading and update the relevant properties.
/// </summary>
public void Update()
{
_hih6130.WriteByte(0);
//
// Sensor takes 35ms to make a valid reading.
//
Thread.Sleep(40);
var data = _hih6130.ReadBytes(4);
//
// Data format:
//
// Byte 0: S1 S0 H13 H12 H11 H10 H9 H8
// Byte 1: H7 H6 H5 H4 H3 H2 H1 H0
// Byte 2: T13 T12 T11 T10 T9 T8 T7 T6
// Byte 4: T5 T4 T3 T2 T1 T0 XX XX
//
if ((data[0] & 0xc0) != 0)
{
throw new Exception("Status indicates readings are invalid.");
}
var reading = ((data[0] << 8) | data[1]) & 0x3fff;
Humidity = ((float)reading / 16383) * 100;
reading = ((data[2] << 8) | data[3]) >> 2;
Temperature = (((float)reading / 16383) * 165) - 40;
}
/// <summary>
/// Force the sensor to make a reading and update the relevanyt properties.
/// </summary>
/// <param name="startAddress">Start address for the read operation.</param>
/// <param name="amount">Amount of data to read from the EEPROM.</param>
public byte[] Read(ushort startAddress, ushort amount)
{
CheckAddress(startAddress, amount);
var address = new byte[2];
address[0] = (byte)((startAddress >> 8) & 0xff);
address[1] = (byte)(startAddress & 0xff);
_eeprom.WriteBytes(address);
return(_eeprom.ReadBytes(amount));
}
void ReadStatus()
{
reception_data = _I2CBus.ReadBytes(5);
Thread.Sleep(100);
}
