[Gambas-user] Serial I/O with byte data

Mike Crean mike.crean at ...2897...
Mon May 15 12:46:01 CEST 2017


If you are talking about a byte the likes of that used in modbusrtu you will need to do some high low bit manipulation on it.
RegardsMike
 

    On Monday, 15 May 2017, 13:19, Alexie <ualex73 at ...626...> wrote:
 

 Following should work for you:

Public Sub XXX_Read()

  Dim iLen As Integer
  Dim aData As Byte[]

  iLen = Lof(Last)
  aData = New Byte[]
  aData.Resize(iLen)
  Try aData.Read(Last, 0, iLen)

End

You need to get the length (lof) first, then resize array ... only then you
can read it.

2017-05-14 21:56 GMT+02:00 Tobias Boege <taboege at ...626...>:

> On Sun, 14 May 2017, alexchernoff wrote:
> > Good day all,
> >
> > Anyone know how to read data received on serial port into an array of
> bytes
> > instead of string?
> >
>
> I think that's not possible.
>
> > String gets unreadable binary characters, so how can I
> > put them into byte[] or so?
> >
>
> This shouldn't be a problem. Gambas Strings are not null-terminated and can
> contain any sequence of bytes, which includes non-printable characters
> (which
> I think is what you meant by "unreadable" characters).
>
> If you insist on a Byte[], read it into a String and use
> Byte[].FromString(),
> but there is no way to go around the String, AFAICT (and that is because
> there is no need to, as Strings can handle binary data just fine).
>
> Regards,
> Tobi
>
> --
> "There's an old saying: Don't change anything... ever!" -- Mr. Monk
>
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