JAVA /如何将2字节浮点数转换为双精度值

Question

I am trying to convert 2 byte float value which is 0D 82 to double value on my project.

When I simulated that value I get the 28.2 . So how can I convert that 2 byte float value to double value on java ?

Thanks for any help !

Answer 1

Look at the following library:

https://sourceforge.net/p/calimero/wiki/Home/

It provides a Java API to the KNX network and its data types. This will most likely do what you want - specfically the tuwien.auto.calimero.dptxlator.DPTXlator2ByteFloat class.

You can use this code:

byte[] test = new byte[2];
test[0] = (byte)0x0D;
test[1] = (byte)0x82;

DPTXlator2ByteFloat floatTranslator = new DPTXlator2ByteFloat(DPTXlator2ByteFloat.DPT_AIR_PRESSURE);
floatTranslator.setData(test);
double value = (double)floatTranslator.getValueFloat();

the value variable will have the 28.2 value as expected.

Import the following in your maven dependencies to include the library:

<dependency>
    <groupId>com.github.calimero</groupId>
    <artifactId>calimero-core</artifactId>
    <version>2.2-beta</version>
<dependency>

Hope this helps.