scpi-dmm: add "switch to local" support for Agilent protocol

Send "SYST:LOC" to Agilent protocol speaking scpi-dmm devices at the end
of the probe (--scan) as well as in close (--show, --samples, etc). This
ends "remote" and re-enters "local" mode after programmatic use. Should
increase usability, eliminates the need for manual intervention before
subsequent DMM use. Was tested with a Keysight DMM. Does not affect the
HP protocol speaking devices.

diff --git a/src/hardware/scpi-dmm/api.c b/src/hardware/scpi-dmm/api.c
index 520dc7068a7c11c647f159b49167587aa626ce5f..077debc7ed1bd2c9594f366a36f234836951e135 100644 (file)
--- a/src/hardware/scpi-dmm/api.c
+++ b/src/hardware/scpi-dmm/api.c
@@ -50,6 +50,7 @@ static const uint32_t devopts_generic_range[] = {
 
 static const struct scpi_command cmdset_agilent[] = {
        { DMM_CMD_SETUP_REMOTE, "\n", },
+       { DMM_CMD_SETUP_LOCAL, "SYST:LOC", },
        { DMM_CMD_SETUP_FUNC, "CONF:%s", },
        { DMM_CMD_QUERY_FUNC, "CONF?", },
        { DMM_CMD_START_ACQ, "INIT", },