/// <summary>
/// Get the status of all leds
/// </summary>
/// <returns>Returns all leds status in an int, lower bit is led 0, 1 is on, 0 is off</returns>
public int GetAllLeds()
{
_grovePi.WriteCommand(GrovePiCommand.LetBarGet, _port, 0, 0);
var ret = _grovePi.ReadCommand(GrovePiCommand.LetBarGet, _port);
return(ret[1] + (ret[2] >> 8));
}
/// <summary>
/// You need to read the sensorbefore getting the value
/// </summary>
public void Read()
{
// Fix for the firmware 1.4.0, you can request a new measurement only if you got data
// from the previous one
if (!(double.IsNaN(_lastTemHum[0]) && double.IsNaN(_lastTemHum[1])))
{
_grovePi.WriteCommand(GrovePiCommand.DhtTemp, _port, (byte)DhtType, 0);
}
// Wait a little bit to read the result
// Delay from source code, line 90 in the Grove Pi firmware repository
// This is needed for firmware 1.4.0 and also working for prevThread.Sleep(500);
Thread.Sleep(300);
var retArray = _grovePi.ReadCommand(GrovePiCommand.DhtTemp, _port);
var temp = BitConverter.ToSingle(retArray.AsSpan(1, 4));
if (Single.IsNormal(temp))
{
_lastTemHum[0] = temp;
}
var humidity = BitConverter.ToSingle(retArray.AsSpan(5, 4));
if (Single.IsNormal(humidity))
{
_lastTemHum[1] = humidity;
}
}
/// <summary>
/// You need to read the sensorbefore getting the value
/// </summary>
public void Read()
{
_grovePi.WriteCommand(GrovePiCommand.DhtTemp, _port, (byte)DhtType, 0);
// Wait a little bit to read the result
Thread.Sleep(50);
var retArray = _grovePi.ReadCommand(GrovePiCommand.DhtTemp, _port);
_lastTemHum[0] = BitConverter.ToSingle(retArray.AsSpan(1, 4));
_lastTemHum[1] = BitConverter.ToSingle(retArray.AsSpan(5, 4));
}
/// <summary>
/// Get the status of all leds
/// </summary>
/// <returns>Returns all leds status in an int, lower bit is led 0, 1 is on, 0 is off</returns>
public int GetAllLeds()
{
_grovePi.WriteCommand(GrovePiCommand.LetBarGet, _port, 0, 0);
var ret = _grovePi.ReadCommand(GrovePiCommand.LetBarGet, _port);
if (ret is object)
{
return(ret[1] + (ret[2] >> 8));
}
throw new Exception("Cannot find all LEDs");
}
