Vaisala RVP900

Chapter 3 _______________________________________________________ Hardware Installation
VAISALA_______________________________________________________________________ 85
3.3.4.3.6 Open the Connection for I/O (OPEN)
Example: "OPEN" means switch from open for "info only" mode to open
for I/O. If the signal processor is in use by another device, you get an error
in response to this command. Multiple clients are allowed to connect for
info only, but only one can do I/O. If you run DspExport with the -803
command line option, you get the legacy behavior, which means that every
connection automatically sends the OPEN command. There is no reverse
command to switch back to open for info only. There is also no such library
call in the driver.
3.3.4.3.7 Read Z Cal Information (RCAL)
Example: "ZCAL" means read the dsp_refl_cal structure from the RVP900
machine and send it back in an ASCII name=value pair format. This is the
structure configured by zauto and by zcal. That configuration is served out
to all clients who want to use the RVP900.
3.3.4.3.8 Reset Kernel FIFOs (RKFF)
Example: "RKFF|2|" means reset the kernel FIFOs on the RVP900. The
argument specifies which direction FIFOs to reset.
3.3.4.3.9 Read Setup Information (SETU)
Example: "SETU" means read the dsp_manual_setup structure from the
RVP900 machine and send it back in an ASCII name=value pair format.
This is the structure configured in the RVP section of setup. That
configuration is served out to all clients who want to use the RVP900.
3.3.4.3.10 Write Z cal Information (WCAL)
Example: "WCAL|..." writes the dsp_refl_cal structure to the RVP900 to
be saved there.
3.3.4.3.11 Notes on Migrating from the SCSI Interface
Here are suggestions for customers who are converting an existing
program, which used a SCSI interface to the RVP7 to the socket interface
to the RVP8 or RVP900. First, take a look at our source code which
handles either SCSI or socket. In OpenSocket.c, you can see the code
which replaces the SCSI device open call. The SCSI inquiry command is
replaced by reading the string returned after the socket is opened. The
SCSI read command is replaced by the "READ|.." command. The SCSI