/// <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>
/// Clear the interrupt flag.
/// Se Command Register on page 13 of the datasheet.
/// </summary>
/// <remarks>
/// According to the datasheet, writing a 1 into bit 6 of the command
/// register will clear any pending interrupts.
/// </remarks>
public void ClearInterrupt()
{
_tsl2561.WriteByte(ClearInterruptBit);
if (_interruptPin != null)
{
_interruptPin.ClearInterrupt();
}
}
/// <summary>
/// Clear the interrupt flag.
/// Se Command Register on page 13 of the datasheet.
/// </summary>
/// <remarks>
/// According to the datasheet, writing a 1 into bit 6 of the command
/// register will clear any pending interrupts.
/// </remarks>
public void ClearInterrupt()
{
_tsl2561.WriteByte(ClearInterruptBit);
if (_interruptPin != null)
{
//Port: TODO - check if needed _interruptPin.ClearInterrupt();
}
}
void InitHT16K33()
{
// SetIsAwake(true);
// SetDisplayOn(true);
// SetBlinkRate(BlinkRate.Off);
_I2CBus.WriteByte(0x21);
_I2CBus.WriteByte(0x81);
SetBrightness(Brightness.Maximum);
ClearDisplay();
}
