FSUIPC java API

[arunptl100]

Hello ,

I have been learning java and have tried to use the FSUIPC java api to get information and send information to fsx. This has worked fine however I do not know to send messages to fsx. In the example provided with the download prints information on the simulator and aircraft and also sends a message to fsx saying ,"Hello world". I have looked hard through the example code and searching the web but couldn't find out. 

 

Many thanks,

 

Arun

[Pete Dowson]

I have been learning java and have tried to use the FSUIPC java api to get information and send information to fsx. This has worked fine however I do not know to send messages to fsx. In the example provided with the download prints information on the simulator and aircraft and also sends a message to fsx saying ,"Hello world". I have looked hard through the example code and searching the web but couldn't find out. 

 

I don't know Java at all, but if you can write to FSUIPC offsets from Java then just use the offset 3380 to write the text, then 32FA to get it displayed. Please refer to the offsets list provided in the SDK (and also in your FSUIPC Documents subfolder).

 

Pete

[arunptl100]

Hi Pete,

 

 

fsuipc_wrapper.WriteData(3380 , 32FA , ?);

I can see it takes  int aOffset , int aCount , byte[] aData but I dont know what any of these are.

 

Is this correct?

 

Sorry as I'm new i'm not sure how this works. I looked at the api under the doc folder but still couldn't figure it out.

 

Arun 

Edited May 20, 2014 by arunptl100

[Pete Dowson]

fsuipc_wrapper.WriteData(3380 , 32FA , ?);

I can see it takes  int aOffset , int aCount , byte[] aData but I dont know what any of these are.

 

Is this correct?

 

Oh dear. No.

 

It isn't hard, and the names do describe what they are!

 

Both 3380 and 32FA are offsets (effectively addresses in a large data area), and they are hexadecimal so must be expressed as such. Sorry, but I have no idea how Java represents a hex number. Maybe 0x preceding or maybe $ like VB?

 

A "count" is a number giving the size of the data to be written: in this case the number of BYTES. In FS each character in a string is a BYTE and strings are ended with a zero BYTE. A byte is 8 bits.

 

Data is the data - i.e. the stuff you want to write. Normally this is a pointer to the data, but I've no idea how or if Java even works with pointers.

 

You evidently have not referred to the offsets list at all to see what these should be written with? I did suggest you look these things up.

 

And don't forget you need to connect to FSUIPC first.

 

Do you know any Java at all? If not I suggest you learn some first. I'm afraid I cannot help with Java.

 

Pete

[arunptl100]

Ok , yes I have connected to fs and have printed heading and speed ect. Yes I have been studying java

Edited May 21, 2014 by arunptl100

[Pete Dowson]

Ok , yes I have connected to fs and have printed heading and speed ect. Yes I have been studying java

 

Ah, good. Then all you need now to be aware of is that offsets are hexadecimal (but you can convert them to decimal if you must), and FS likes strings for display only in "ASCIIZ", which is a series of ASCII 8-bit characters terminated by a zero byte.

 

Pete