/// <summary>
/// Get a reading from the sensor and set the Temperature and Humidity properties.
/// </summary>
public void Update()
{
var data = sht31d.WriteRead(new byte[] { 0x2c, 0x06 }, 6);
Conditions.Humidity = (100 * (float)((data[3] << 8) + data[4])) / 65535;
Conditions.Temperature = ((175 * (float)((data[0] << 8) + data[1])) / 65535) - 45;
}
protected void Initialize()
{
si7021.WriteByte(SOFT_RESET);
Thread.Sleep(100);
//
// Get the device ID.
//
SerialNumber = 0;
Span <byte> tx = stackalloc byte[2];
Span <byte> rx = stackalloc byte[8];
Span <byte> rx2 = stackalloc byte[6];
tx[0] = READ_ID_PART1;
tx[1] = READ_ID_PART2;
si7021.WriteRead(tx, rx);
for (var index = 0; index < 4; index++)
{
SerialNumber <<= 8;
SerialNumber += rx[index * 2];
}
tx[0] = READ_2ND_ID_PART1;
tx[1] = READ_2ND_ID_PART2;
si7021.WriteRead(tx, rx2);
SerialNumber <<= 8;
SerialNumber += rx2[0];
SerialNumber <<= 8;
SerialNumber += rx2[1];
SerialNumber <<= 8;
SerialNumber += rx2[3];
SerialNumber <<= 8;
SerialNumber += rx2[4];
if ((rx2[0] == 0) || (rx2[0] == 0xff))
{
SensorType = DeviceType.EngineeringSample;
}
else
{
SensorType = (DeviceType)rx2[0];
}
SetResolution(SensorResolution.TEMP11_HUM11);
}
protected void Initialize()
{
si7021.WriteByte(SOFT_RESET);
Thread.Sleep(100);
//
// Get the device ID.
//
var part1 = si7021.WriteRead(new[]
{
READ_ID_PART1,
READ_ID_PART2
}, 8);
var part2 = si7021.WriteRead(new[]
{
READ_2ND_ID_PART1,
READ_2ND_ID_PART2
}, 6);
SerialNumber = 0;
for (var index = 0; index < 4; index++)
{
SerialNumber <<= 8;
SerialNumber += part1[index * 2];
}
SerialNumber <<= 8;
SerialNumber += part2[0];
SerialNumber <<= 8;
SerialNumber += part2[1];
SerialNumber <<= 8;
SerialNumber += part2[3];
SerialNumber <<= 8;
SerialNumber += part2[4];
if ((part2[0] == 0) || (part2[0] == 0xff))
{
SensorType = DeviceType.EngineeringSample;
}
else
{
SensorType = (DeviceType)part2[0];
}
SetResolution(SensorResolution.TEMP11_HUM11);
}
