Dear Core colleagues,
I have a new CODAC Core System (CCS) bug on my desk, saying:
New: pvput does not support anymore JSON field assignment
The command line help does not mention this removal of functionality.
$ pvput -h
Usage: pvput [options] <PV name> <value>
pvput [options] <PV name> <size/ignored> <value> [<value> ...]
pvput [options] <PV name> <field>=<value> ...
pvput [options] <PV name> <json_array>
pvput [options] <PV name> <json_map>
options:
-h: Help: Print this message
-V: Print version and exit
-r <pv request>: Request, specifies what fields to return and options,
default is ''
-w <sec>: Wait time, specifies timeout, default is 5.000000
second(s)
-p <provider>: Set default provider name, default is 'pva'
-M <raw|nt|json>: Output mode. default is 'nt'
-v: Show entire structure (implies Raw mode)
-q: Quiet mode, print only error messages
-d: Enable debug output
Deprecated options:
default: Auto - try value as enum string, then as index number
-n, -s, -F, -t: ignored
-f <input file>: error
JSON support is present
Examples:
pvput double01 1.234 # shorthand
pvput double01 value=1.234
pvput arr:pv X 1.0 2.0 # shorthand (X is arbitrary and ignored)
pvput arr:pv "[1.0, 2.0]" # shorthand
pvput arr:pv value="[1.0, 2.0]"
Field values may be given with JSON syntax.
Complete structure
pvput double01 '{"value":1.234}'
Sub-structure(s)
pvput group:pv some='{"value":1.234}' other='{"value":"a string"}'
$ /usr/bin/pvput PVA-SRV-TESTS:INTEGER '{"value":4321}'
JSON syntax not supported by this build.
The previous CCS version was using EPICS 7.0.2 (libpvAccess 6.1.0), the one we're preparing for uses EPICS 7.0.3.1 (libpvAccess 7.1.0). I don't see any mention of this in the release notes of pvAccess [1].
Any suggestions?
Cheers,
~Ralph
