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agilent-dmm: add support for dBm/dBV modes

This commit is contained in:
Aurelien Jacobs 2016-09-11 19:17:34 +02:00 committed by Uwe Hermann
parent d822726dbf
commit 8f68f36bc5
2 changed files with 34 additions and 1 deletions
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34
src/hardware/agilent-dmm/protocol.c
View File

@ -242,6 +242,14 @@ static int recv_stat_u125x(const struct sr_dev_inst *sdi, GMatchInfo *match)
s = g_match_info_fetch(match, 1);
sr_spew("STAT response '%s'.", s);
/* dBm/dBV modes. */
if ((s[2] & ~0x20) == 'M')
devc->mode_dbm_dbv = devc->cur_unit[0] = SR_UNIT_DECIBEL_MW;
else if ((s[2] & ~0x20) == 'V')
devc->mode_dbm_dbv = devc->cur_unit[0] = SR_UNIT_DECIBEL_VOLT;
else
devc->mode_dbm_dbv = 0;
/* Peak hold mode. */
if (s[4] == '1')
devc->cur_mqflags[0] |= SR_MQFLAG_MAX;
@ -275,6 +283,14 @@ static int recv_stat_u128x(const struct sr_dev_inst *sdi, GMatchInfo *match)
else
devc->cur_mqflags[0] &= ~(SR_MQFLAG_MAX | SR_MQFLAG_MIN | SR_MQFLAG_AVG);
/* dBm/dBV modes. */
if ((s[2] & ~0x20) == 'M')
devc->mode_dbm_dbv = devc->cur_unit[0] = SR_UNIT_DECIBEL_MW;
else if ((s[2] & ~0x20) == 'V')
devc->mode_dbm_dbv = devc->cur_unit[0] = SR_UNIT_DECIBEL_VOLT;
else
devc->mode_dbm_dbv = 0;
/* Peak hold mode. */
if (s[4] == '4')
devc->cur_mqflags[0] |= SR_MQFLAG_MAX;
@ -322,7 +338,7 @@ static int recv_fetc(const struct sr_dev_inst *sdi, GMatchInfo *match)
float fvalue;
const char *s;
char *mstr;
int i;
int i, exp;
sr_spew("FETC reply '%s'.", g_match_info_get_string(match));
devc = sdi->priv;
@ -352,6 +368,17 @@ static int recv_fetc(const struct sr_dev_inst *sdi, GMatchInfo *match)
fvalue *= powf(10, devc->cur_exponent[i]);
}
if (devc->cur_unit[i] == SR_UNIT_DECIBEL_MW ||
devc->cur_unit[i] == SR_UNIT_DECIBEL_VOLT ||
devc->cur_unit[i] == SR_UNIT_PERCENTAGE) {
mstr = g_match_info_fetch(match, 2);
if (mstr && sr_atoi(mstr, &exp) == SR_OK) {
devc->cur_digits[i] = MIN(4 - exp, devc->cur_digits[i]);
devc->cur_encoding[i] = MIN(5 - exp, devc->cur_encoding[i]);
}
g_free(mstr);
}
sr_analog_init(&analog, &encoding, &meaning, &spec,
devc->cur_digits[i] - devc->cur_exponent[i]);
analog.meaning->mq = devc->cur_mq[i];
@ -519,6 +546,11 @@ static int recv_conf_u124x_5x(const struct sr_dev_inst *sdi, GMatchInfo *match)
devc->cur_unit[i] = SR_UNIT_VOLT;
devc->cur_mqflags[i] = 0;
devc->cur_exponent[i] = 0;
if (i == 0 && devc->mode_dbm_dbv) {
devc->cur_unit[i] = devc->mode_dbm_dbv;
devc->cur_digits[i] = 3;
devc->cur_encoding[i] = 4;
}
if (mstr[4] == ':') {
if (!strncmp(mstr + 5, "ACDC", 4)) {
/* AC + DC offset */

1
src/hardware/agilent-dmm/protocol.h
View File

@ -74,6 +74,7 @@ struct dev_context {
int mode_tempaux;
int mode_continuity;
int mode_squarewave;
int mode_dbm_dbv;
};
struct agdmm_job {