On 2006-03-29, Peter Hansen <[EMAIL PROTECTED]> wrote:
>>>This seems a little odd to me. We've used several RS232-RS485
>>>converters without needing to do that. Maybe a more sophisticated
>>>device would eliminate this need?
>>
>> Yes. The device is very simple (I made it).
>
> Perhaps a very
On 2006-03-29, pdalet <[EMAIL PROTECTED]> wrote:
> The best solution is to send the last character with
> interrupt. when the TDR is empty an interrupt is generated. An
> interrupt program is executed to change the state of dtr.
No. That doesn't work. You have to wait until the transmit
_shift_r
Peter Hansen wrote:
> Alejandro wrote:
> >
> > Yes. The device is very simple (I made it).
>
> Perhaps a very simple change to it would make it as convenient as the
> commercial products. I vaguely recall (not having checked for over a
> decade) that all they do is set the outgoing DTR line wh
Alejandro wrote:
> Peter Hansen wrote:
>
>>Alejandro wrote:
>>
>>>I'm using pySerial to talk to a RS232 to RS485 converter. In order to
>>>control the converter, I need to control the DTR line to enable/disable
>>>de RS485 driver.
>>
>>This seems a little odd to me. We've used several RS232-RS485
Hi
I have developped a python script to control a rs232c rs485 converter,
named pyRS485
with pythoncard on windows.
ftp-champo.ac-toulouse.fr/pub/btseo/pdalet/python/
python 2.4 Electronics Applications 20050902.exe
The best solution is to send the last character with interrupt. when
the TDR is
On 2006-03-28, Alejandro <[EMAIL PROTECTED]> wrote:
> Hi:
>
> I'm using pySerial to talk to a RS232 to RS485 converter. In order to
> control the converter, I need to control the DTR line to enable/disable
> de RS485 driver. In particular, I need to :
>
> write a character to the serial port
> set
Peter Hansen wrote:
> Alejandro wrote:
> > I'm using pySerial to talk to a RS232 to RS485 converter. In order to
> > control the converter, I need to control the DTR line to enable/disable
> > de RS485 driver.
>
> This seems a little odd to me. We've used several RS232-RS485
> converters without
Alejandro wrote:
> I'm using pySerial to talk to a RS232 to RS485 converter. In order to
> control the converter, I need to control the DTR line to enable/disable
> de RS485 driver.
This seems a little odd to me. We've used several RS232-RS485
converters without needing to do that. Maybe a mor
