[Gambas-user] Issue/Problem with Serial Port Component

[Benoit Minisini]

On Sunday 04 June 2006 23:52, nando wrote:
> I have tested this for hours...
>
> PUBLIC SPortReceiveString AS STRING
>
> SUB SPort_Read()
>
>   DIM s AS STRING
>   DIM ls AS INTEGER
>
>   ls = LOF(SPort)
>   'IF ls > 1 THEN DEC ls   '<---always read 1 less than what LOF offers
>
>   READ # SPort, s, ls
>
>   PRINT s  '<--help to debug
>
>   SPortReceiveString = SPortReceiveString & s  'accumulate input
>
>   'There is some testing of SPortReceiveString here
>
> END
>
> Comments:
> Serial Port data received is in groups of about 120 bytes every 10 minutes.
> Every READ event is a small bunch of characters received.
>
> I have found out that it consistently happens that
> the during the SPort_Read event of the second last bunch of chars,
> there are more data being receive by the kernel or SPort control
> but an event will not happen.
>
> If I unREM the REMed line...
>
>   IF ls > 1 THEN DEC ls   '<---always read 1 less than what LOF offers
>
> then it works perfect every time.
> An event will happen for the very past burst of serial data in.
>
> -Fernando
>

Do you use the SerialPort control or a device opened with OPEN ... FOR READ ?

The first one use code written by Daniel Campos to read the data from the 
serial port, and the second code written by me. I don't know why, but there 
aren't the same...

Regards,

-- 
Benoit Minisini