2 * This file is part of the libsigrok project.
4 * Copyright (C) 2013 Matthias Heidbrink <m-sigrok@heidbrink.biz>
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
23 * BBC Goerz Metrawatt M2110 ASCII protocol parser.
25 * Most probably the simplest multimeter protocol ever ;-) .
31 #include "libsigrok.h"
32 #include "libsigrok-internal.h"
34 /* Message logging helpers with subsystem-specific prefix string. */
35 #define LOG_PREFIX "bbcgm-m2110: "
36 #define sr_log(l, s, args...) sr_log(l, LOG_PREFIX s, ## args)
37 #define sr_spew(s, args...) sr_spew(LOG_PREFIX s, ## args)
38 #define sr_dbg(s, args...) sr_dbg(LOG_PREFIX s, ## args)
39 #define sr_info(s, args...) sr_info(LOG_PREFIX s, ## args)
40 #define sr_warn(s, args...) sr_warn(LOG_PREFIX s, ## args)
41 #define sr_err(s, args...) sr_err(LOG_PREFIX s, ## args)
43 SR_PRIV gboolean sr_m2110_packet_valid(const uint8_t *buf)
47 if ((buf[7] != '\r') || (buf[8] != '\n'))
50 if (!strncmp((const char *)buf, "OVERRNG", 7))
53 if (sscanf((const char *)buf, "%f", &val) == 1)
59 SR_PRIV int sr_m2110_parse(const uint8_t *buf, float *floatval,
60 struct sr_datafeed_analog *analog, void *info)
66 /* We don't know the unit, so that's the best we can do. */
67 analog->mq = SR_MQ_GAIN;
68 analog->unit = SR_UNIT_UNITLESS;
71 if (!strncmp((const char *)buf, "OVERRNG", 7))
73 else if (sscanf((const char *)buf, "%f", &val) == 1)