/// <summary>
/// Writes a value to the pin.
/// </summary>
/// <param name="value">Write Value (0/1) <see cref="GpioPinValue"/>.</param>
public void Write(ProviderGpioPinValue value)
{
this.pin.Write(GpioPinValue.High);
var val = (GpioPinValue)value;
this.pin.Write(val);
}
/// <summary>
/// Create native reader for values (read bytes vaules)
/// </summary>
public void ReadValues()
{
int MAX_TIMINGS = 85;
int[] dht11_dat = new int[5] {
0, 0, 0, 0, 0
};
dht11_dat[0] = dht11_dat[1] = dht11_dat[2] = dht11_dat[3] = dht11_dat[4] = 0;
byte counter = 0;
byte j = 0, i;
ProviderGpioPinValue laststate = ProviderGpioPinValue.High;
SetUpNativeSensor();
for (int k = 0; k < 20; k++)
{
for (i = 0; i < MAX_TIMINGS; i++)
{
counter = 0;
while (this.nativePin.Read() == (ProviderGpioPinValue)laststate)
{
counter++;
Task.Delay(1);
if (counter == 255)
{
break;
}
}
laststate = (ProviderGpioPinValue)this.nativePin.Read();
if (counter == 255)
{
break;
}
// Skip first 3 samples
if ((i >= 4) && (i % 2 == 0))
{
dht11_dat[j / 8] <<= 1;
if (counter > 16)
{
dht11_dat[j / 8] |= 1;
}
j++;
}
}
if ((j >= 40) && (dht11_dat[4] == ((dht11_dat[0] + dht11_dat[1] + dht11_dat[2] + dht11_dat[3]) & 0xFF)))
{
if (!(dht11_dat[0] == 0) && (dht11_dat[2] == 0))
{
this.Message += "\n\n" + string.Format("Humidity = {0}.{1} | Temperature = {2}.{3} * C",
dht11_dat[0], dht11_dat[1], dht11_dat[2], dht11_dat[3]);
}
}
this.Message += "\n\n" + string.Format("Humidity = {0}.{1} | Temperature = {2}.{3} * C", 0, 0, 0, 0);
}
}
