[Gambas-user] help with inherits using serial port

[Tony Morehen]

1) Serial ports are almost never used these days so it's likely no one 
is able to test your code.

2) Your description of what you want to do is very confusing. Please 
remember that computer translators don't work very well for technical 
documents.

3) Jussi is right.  You close the port before you read from it.  Of 
course there's nothing to read.

4) You are getting stream errors, that's what 'cannot write, stream 
closed' is.

5) Obviously, for stream to be closed, your open failed.  Your program 
never tests for a successful open.

6) Open does not raise an error because your open code says not to: Try 
SComm.Open().  With the Try, Catch will never be called.

7) In serial programming, direct reads from tty are best event-driven.  
That way you can control the size of the buffer. Oh yes, remember to 
remove read data from the buffer.


On 2018-08-01 10:45 AM, PICCORO McKAY Lenz wrote:
> The problem is that you didn't read the context of the first email and 
> the first email is translated with the "wonderful deepl translator" 
> and by the answer from you its very bad them
>
> Explain that the main module is where I call the functions (I see the 
> translator didn't place it very well), and once of thems are the close 
> port ("$printdev.cp")
>
> I was must to read the English part before sent it, it is very badly 
> translated, EVEN IF I REMOVE THE LINE THAT CLOSES THE PORT THE PRINT 
> LINE DOES NOT OUT NOTHING, you can notice that it doesn't write 
> anything when I try to print.
>
> I noted that many of the gambas forums are very dead, and only the 
> gambas german book are alive, gambas resources are very limited, and i 
> must finish hurry my requeriments so from any of you must understand 
> when a people has some pression, i note when herbert said that want to 
> swicht to python and i understand their problem.. it's the obvious 
> result due the very limited resources..  i like to continue work with 
> gambas but please dont make "too easy to do" (i pretentd to are sarcastid)
>
> Lenz McKAY Gerardo (PICCORO)
> http://qgqlochekone.blogspot.com
>
> 2018-08-01 10:19 GMT-04:00 Jussi Lahtinen <jussi.lahtinen at gmail.com 
> <mailto:jussi.lahtinen at gmail.com>>:
>
>     Not sure about that, but you certainly are the only one who do not
>     know how to use spell checker or care enough to write
>     understandable English.
>     At least one problem in your code is because you close the stream
>     and then try to read from it.
>     The IDE has feature to run your project step by step. It's easy
>     way to see the problem.
>
>
>     Jussi
>
>     On Wed, Aug 1, 2018 at 4:46 PM, PICCORO McKAY Lenz
>     <mckaygerhard at gmail.com <mailto:mckaygerhard at gmail.com>> wrote:
>
>         i feel that i are the only that ask for real problems or my
>         questions are outside of this world
>
>         maybe i try inherits the common operations inside each class
>         and determine class type when use the main class
>
>         Lenz McKAY Gerardo (PICCORO)
>         http://qgqlochekone.blogspot.com
>         <http://qgqlochekone.blogspot.com>
>
>         2018-07-31 17:15 GMT-04:00 PICCORO McKAY Lenz
>         <mckaygerhard at gmail.com <mailto:mckaygerhard at gmail.com>>:
>
>             hello, today I have another case, I want to implement
>             inheritance to the common code with the serial port printing.
>
>             What I want to do is to have the procedures to open, close
>             and write to the serial port in one class, and two others
>             that inherit these functions, then one of the inheritors
>             writes "A" to the port while the other writes "B" to the
>             port but the writing functions should be called the same...
>
>             i attached project with minimal comments hope someone will
>             help with this!
>
>             the firts problem its that i received "'canot write
>             "stream are closed"  why?
>
>             the second problem its that i cannot got any stream event
>             when i do not have stream errors
>
>             Lenz McKAY Gerardo (PICCORO)
>             http://qgqlochekone.blogspot.com
>             <http://qgqlochekone.blogspot.com>
>
>
>
>
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