On 07/04/2013 09:09 AM, Paul Breneman wrote:
On 07/04/2013 05:08 AM, Dennis Poon wrote:
thanks.
I am not using the fpc email as it seems off topic.
May I know the exact brand and model number of the adapter you used?
I have an ATEN usb-to-serial cable (UC-232A) but I am not sure how to
connect its serial pins to rs-485 's DIFFERENTIAL LINES and how to set
that adapter into half-duplex translation mode.
Dennis
My favorite is the USB-RS485-WE-1800-BT made by FTDI. It is sold by
many companies:
http://www.ftdichip.com/Products/Cables/USBRS485.htm
It supports 24000 baud which many other adapters don't.
I've only used it under Windows but as it is made by FTDI I would think
using it under Linux should be no problem.
www.CtrlTerm.com has Synapse and SynaSer code that should work on the
RPi (for serial and TCP/IP communication) as I did test that recently.
Please let me know if you have any problems and I will do further
testing on my RPi.
Here is my favorite USB to RS-232 serial adapter (4 port, sold at
Amazon, has FTDI chipset):
http://www.gearmo.com/shop/gm-ftdi4x/
This worked on my RPi.
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