Environment variables

EPICS

bobview, bobview-probe and bobview-server read the standard EPICS client variables:

variable	meaning
`EPICS_CA_ADDR_LIST`	hosts or broadcast addresses to search for CA PVs
`EPICS_CA_AUTO_ADDR_LIST`	`NO` to search only `EPICS_CA_ADDR_LIST`
`EPICS_CA_NAME_SERVERS`	`host:port` of CA name servers (gateways) reached over TCP
`EPICS_PVA_ADDR_LIST`	hosts or broadcast addresses to search for PVA PVs
`EPICS_PVA_AUTO_ADDR_LIST`	`NO` to search only `EPICS_PVA_ADDR_LIST`
`EPICS_PVA_NAME_SERVERS`	`host:port` of PVA servers reached over TCP

bobview-testioc reads the server variables: EPICS_CA_SERVER_PORT, EPICS_CAS_*, EPICS_PVAS_SERVER_PORT / EPICS_PVA_SERVER_PORT (TCP, default 5075) and EPICS_PVAS_BROADCAST_PORT (UDP search, default 5076).

bobview

variable	meaning
`BOBVIEW_LOG`	log level, e.g. `debug` for more output
`BOBVIEW_UI_SCALE`	as `--ui-scale`
`BOBVIEW_ARCHIVER`	the archiver trends use when `--archiver` is not given (see Trend PVs); empty counts as unset
`XDG_CONFIG_HOME`	layouts are in `$XDG_CONFIG_HOME/bobview/layouts` (default `~/.config/bobview/layouts`; on Windows `%APPDATA%\bobview\layouts`)
`WAYLAND_DISPLAY`	set it empty to run under XWayland, so layouts keep window positions

Displays opened from files also fall back to environment variables for macros they don't define; see Macros, rules and PV types.

bobview-server

variable	meaning
`BOBVIEW_WRITE_TOKEN`	the write token for `--write`; an empty value counts as unset

Tests

The interop tests in crates/pv/tests/interop.rs are skipped unless these name PVs to read:

variable	meaning
`BOBVIEW_INTEROP_CA_PV`	a PV served by the IOC over Channel Access
`BOBVIEW_INTEROP_PVA_PV`	a PV served by the IOC over PV Access (PVXS)
`BOBVIEW_INTEROP_GW_PV`	a PV reached through ca-gateway (CA)
`BOBVIEW_INTEROP_WRITE_PV`	optional writable numeric PV; set to 7 and read back
`BOBVIEW_INTEROP_REQUIRE`	`1` to fail instead of skipping when a variable is missing