Hi,
NI does not have a driver for the serial cards in QNX. However, I was checking the documentation of the Serial products for Linux at:
http://www.ni.com/linux/
Specifically the "Using PCI Serial with Linux" manual:
http://digital.ni.com/manuals.nsf/caba5d53e9b015a186256793004eebb7/5dfd73939cfa3ac8862567df00778bf1?OpenDocument
To use these boards in Linux you use the standard Linux driver. These boards use a 16550A standard UART. You can use this information as reference and use the standard QNX support for serial. You can also look at the code of Linux's serial driver.
The manual also refers to some applications used to configure the 485 specific properties. These applications are found (along with source code) at:
ftp://ftp.ni.com/suppo
rt/ind_comm/serial/linux/
Of course, the source code is for Linux, but they are short programs, so it should be easy to port to QNX.
Hope this helps.
DiegoF
