KIKUTARO

Thank you very much , Pete. It is good to have company in trouble. I believe this finally ends the matter. Many thanks for your advice! :D

Thank you for reply, Pete. Let me explain you a reason why I want to FSUIPC_Write and Read continuously.I made a small 777-MCP hardware with a rotary encoder sws, 7-segleds and microcomputer. It sends and receives a data to and from VB program via RS232C port. I want a two-way conversation between a hardware MCP and FS MCP (i.e. if I operate a hardware MCP ,it changes value of FS MCP. And otherwise) In the VB program , SubProcedure is running 500ms cycle. It works... Step1. Check whether a value of hardware MCP changes or not. If it has changed , sends it to FS. (at this time a value of FS MCP on screen changes) Step2. Check a value of FS MCP. If it has changed , sends it to hardware MCP via RS232C. A problem is there are differences between FS MCP value on screen and read value from FS MCP in Step2. So I tried some of test using simple VB program, and noticed FSUIPC_READ() can't read a correct value after in just a sec FSUIPC_WRITE(). But I might be unintelligene about FSUIPC. What should I see to learn how to use of FSUIPC_Read, Write, Process_?? Best Regards.

Hello , everybody. I've been sufferig from a problem using FSUIPC_READ() during the past one month. I use FSUIPC 3.48 , VB5 and FS2004. What I like to do is , 1. Write a value (f.e. altitude) to FS's MCP via FSUIPC_WRITE(). 2. Shortly thereafter , read altitude of FS's MCP via FSUIPC_READ(). I can't get a correct value first, but while trying in severaltimes I can get correct value. But I'd like to get it as quickly as possible. My VB code is below. Please somebody teach me what my mistake. Best regards ' ---------------------------- Dim FsAlt(4) As Byte Dim alt As Long Dim AltFnl as Long alt = 5000 * 0.3048 * 65536 ' --- alt=5000 ft Call FSUIPC_Write(&H7D4, 4, VarPtr(alt), dwResult) '---Write alt to FS Call FSUIPC_Read(&H7D4, 4, VarPtr(FsAlt(1)), dwResult) '--- Read alt from FS Call FSUIPC_Process(dwResult) AltFnl = (FsAlt(1) + FsAlt(2) * 256& + FsAlt(3) * 65536 + FsAlt(4) * 16777216) / 19975.3728 '-----------------------------