Experimental Physics and
Industrial Control System

Kate Feng <[email protected]> · Thu, 20 Nov 2008 14:32:50 -0500

Szalata, Zenon M. wrote:

I need a device driver for the CAEN V965 module, which works with vxWorks 6.x. Here at SLAC we have a device driver for this module which works with rtems only.
Thanks,
Zen

Is the driver written for EPICS 3.14.x ? If so, it should be
easy to port it to vxWorks.  It is a good idea to write a driver
for multiple platforms.  The "Application Developer's Guide"
provides a good guideline.
1) For the src/Makefile :
Copy the existing Makefile to Makefile.RTEMS.  For the vxworks
Makefile, change "PROD_IOC_RTEMS" to "PROD_IOC_vxWorks"
and take out all the RTEMS related include path.
2) For the source code under src/ :
vxworks access the I/O register via a  pointer to the address.
For example : for the long data access, which is four bytes, it does:
   volatile epicsUInt32 *reg;
    epicsUInt32 value;
    reg = (volatile epicsUInt32 *) io_address ;
   *reg = value;
while RTEMS  accesses  the I/O register via the command in_be32(  ) or
in_le32().
You can reference "synAppsRTEMS"  source code at the web site :
http://www.nsls.bnl.gov/facility/expsys/software/EPICS/
The software is meant to be ported for both RTEMS and vxWorks.
Cheers,
Kate

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System