public Item <float> Readfloat(DeviceAddress deviceAddress)
{
var datas = readyBytes(deviceAddress, 4);
return(datas == null ? Item <float> .CreateDefault() :
new Item <float>()
{
Vaule = UnsafeNetConvert.BytesToFloat(datas, 0, deviceAddress.ByteOrder), UpdateTime = DateTime.Now, Quality = QUALITIES.QUALITY_GOOD
});
}
/// <summary>
/// 16位无符号整形点绑定浮点数据
/// </summary>
/// <param name="source">浮点源数据</param>
/// <param name="sourceindex">源数据点索引</param>
/// <param name="targets">目标数据，数组长度为2，点长度为1的虚拟点</param>
/// <param name="bindingWay">绑定方式，默认为单方向</param>
public static bool UshortBinding(IPoint <float> source, int sourceindex, IPoint <ushort>[] targets, ByteOrder byteOrder = ByteOrder.None, BindingWay bindingWay = BindingWay.OneWay)
{
if (sourceindex >= source.Length)
{
return(false);
}
if (targets.Length != 2)
{
return(false);
}
switch (bindingWay)
{
case BindingWay.OneWay:
source.PropertyChanged += (s, p) =>
{
if (int.Parse(p.PropertyName) == sourceindex)
{
byte[] temp1 = UnsafeNetConvert.FloatToBytes(source[(byte)sourceindex], byteOrder);
ushort[] temp2 = (byteOrder == ByteOrder.BigEndian) ? UnsafeNetConvert.BytesToUShorts(temp1, 0, 2, byteOrder) : UnsafeNetConvert.BytesToUShorts(temp1, 0, 2, ByteOrder.None); //判断byteorder是否为无须翻转高低位的大端数据
for (int i = 0; i < targets.Length; i++)
{
targets[i].ValueUpdate(temp2[i], 0);
}
}
};
return(true);
case BindingWay.TwoWay:
source.PropertyChanged += (s, p) =>
{
if (int.Parse(p.PropertyName) == sourceindex)
{
byte[] temp1 = UnsafeNetConvert.FloatToBytes(source[(byte)sourceindex], byteOrder);
ushort[] temp2 = (byteOrder == ByteOrder.BigEndian) ? UnsafeNetConvert.BytesToUShorts(temp1, 0, 2, byteOrder) : UnsafeNetConvert.BytesToUShorts(temp1, 0, 2, ByteOrder.None); //判断byteorder是否为无须翻转高低位的大端数据
for (int i = 0; i < targets.Length; i++)
{
targets[i].ValueUpdate(temp2[i], 0);
}
}
};
foreach (var target in targets)
{
target.PropertyChanged += (s, p) =>
{
var temp1 = (byteOrder == ByteOrder.BigEndian) ? UnsafeNetConvert.UShortsToBytes(new ushort[] { targets[0][0], targets[1][0] }, byteOrder) : UnsafeNetConvert.UShortsToBytes(new ushort[] { targets[0][0], targets[1][0] }, ByteOrder.None);
var temp2 = UnsafeNetConvert.BytesToFloat(temp1, 0, byteOrder);
source.ValueUpdate(temp2, sourceindex);
};
}
return(true);
case BindingWay.ReverseWay:
foreach (var target in targets)
{
target.PropertyChanged += (s, p) =>
{
var temp1 = (byteOrder == ByteOrder.BigEndian) ? UnsafeNetConvert.UShortsToBytes(new ushort[] { targets[0][0], targets[1][0] }, byteOrder) : UnsafeNetConvert.UShortsToBytes(new ushort[] { targets[0][0], targets[1][0] }, ByteOrder.None);
var temp2 = UnsafeNetConvert.BytesToFloat(temp1, 0, byteOrder);
source.ValueUpdate(temp2, sourceindex);
};
}
return(true);
default:
return(false);
}
}
