VFP 愛用者社區

[K.W. Mok]

要用 foxpro 從電腦的 com1 取電子磅的數據

[bx1166]

> Run mode com1 2400,E,7,1
> comhandle=fopen('com1',12)
> if comhandle<0
> wait 'no open com1' window nowait
> return
> endif
> store '0' to cominput1
> cominput1=fgets(comhandle)
>
> any idea and solution ? Please Help

Albert,

Is Foxpro 2.6a the windows version? Foxpro 2.6 came in two flavors - The DOS version and the Windows version. Which is this?

If it is the Windows version, then this will apply:

p1.3-522 in the Language reference for Foxpro 2.6 for DOS and Windows -

In the Parameters section for FOPEN() in the Language Reference for FoxPro for MS-DOS and Windows 'Ports cannot be opened with low-level file functions in FoxPro for Windows'.

If you are in FoxPro for DOS, try opening the port in the buffered scheme:

comhandle=fopen('com1',2)

In the same vein, try upping the baud rate. I assume you are trying to communicate via a serial cable and not modems.

If the other machine is running Unix, or some variation thereof, you need to change to a seven bit word, with no stop-bit.

Also, to send to the port, use FPUTS(), not FGETS().

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