Thanks Sven,
> You should #close the port when you are done, else it remains in use, I would
> guess.
Of course, i used :
| srl |
srl := SerialPort new.
srl openPort: 'COM1'.
srl nextPutAll: #[ 27 66 2 2 ] .
srl close.
But after the first time, when submit the same code the system answer:
Error: Cannot open 'COM1'
I don't unterstand because.
I note what the sometimes SerialPort allInstances answer
instance after the close method.
Perhaps remain occupied some resources?
Ciao,
Dario
> Also, why do you #close before you start, seems strange to me ?
>
> On 17 Feb 2014, at 12:05, Dario Trussardi <[email protected]> wrote:
>
>> Ciao,
>>
>>
>>> Hi,
>>>
>>> I'm also interested by an answer to that question. So far, what I have as
>>> status is: you need a plugin to handle communications with the serial port
>>> (either for direct RS232 or USB-to-Serial) and compiling the serial port
>>> plugin with the Pharo VM makes it unstable.
>>
>> I dont know " compiling " plugin area. ( i work with Windows 7 )
>>
>>> The solution we used was: to compile the serial plugin for the squeak VM
>>> and work in Squeak (4.3) instead of Pharo.
>>
>> Can you explain more detail about it?
>>
>>
>> My test is :
>>
>>
>> I download the Pharo 2.0 #20628 and i use the
>> SerialPort class.
>>
>> The first time i do the code:
>>
>> | srl |
>>
>> srl := SerialPort new.
>> srl close.
>>
>> srl openPort: 'COM1'.
>>
>> srl nextPutAll: #[ 27 66 2 2 ] .
>>
>> The RS232 device work fine.
>>
>> After the first time, when submit the same code the system answer:
>>
>> Error: Cannot open 'COM1'
>>
>> A this time i need to restart the Pharo environment.
>>
>>
>> Any considerations, suggestions ?
>>
>>
>> Thanks,
>>
>> Dario
>>
>>
>>>
>>> Thierry
>>>
>>> Le 16/02/2014 16:28, Dario Trussardi a écrit :
>>>> Hi,
>>>>
>>>>
>>>> i work with: Pharo1.Latest update: #14445 ( or
>>>> with: Pharo2.0 Latest update: #20628 ).
>>>>
>>>>
>>>> I'm interested to manage communications with USB or RS232
>>>> device.
>>>>
>>>>
>>>> I can find package which support this protocol?
>>>>
>>>> Thank for any considerations ?
>>>>
>>>> Dario
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>> --
>>> Thierry Goubier
>>> CEA list
>>> Laboratoire des Fondations des Systèmes Temps Réel Embarqués
>>> 91191 Gif sur Yvette Cedex
>>> France
>>> Phone/Fax: +33 (0) 1 69 08 32 92 / 83 95
>>>
>>
>>
>
>
