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/>.
20 #ifndef LIBSIGROK_HARDWARE_NORMA_DMM_PROTOCOL_H
21 #define LIBSIGROK_HARDWARE_NORMA_DMM_PROTOCOL_H
25 #include "libsigrok.h"
26 #include "libsigrok-internal.h"
28 /* Message logging helpers with subsystem-specific prefix string. */
29 #define LOG_PREFIX "norma-dmm: "
30 #define sr_log(l, s, args...) sr_log(l, LOG_PREFIX s, ## args)
31 #define sr_spew(s, args...) sr_spew(LOG_PREFIX s, ## args)
32 #define sr_dbg(s, args...) sr_dbg(LOG_PREFIX s, ## args)
33 #define sr_info(s, args...) sr_info(LOG_PREFIX s, ## args)
34 #define sr_warn(s, args...) sr_warn(LOG_PREFIX s, ## args)
35 #define sr_err(s, args...) sr_err(LOG_PREFIX s, ## args)
37 #define NMADMM_BUFSIZE 256
39 /** Norma DMM request types (used ones only, the multimeters support about 50).
42 NMADMM_REQ_IDN = 0, /**< Request identity */
43 NMADMM_REQ_STATUS, /**< Request device status (value + ...) */
46 /** Defines requests used to communicate with device. */
48 enum nmadmm_req_t req_t; /** Request type. */
49 const char* reqstr; /** Request string */
52 /** Strings for requests. */
53 extern const struct nmadmm_req nmadmm_requests[];
55 /** Private, per-device-instance driver context. */
57 /* Model-specific information */
58 char* version; /**< Version string */
59 int type; /**< DM9x0, e.g. 5 = DM950 */
60 /* Acquisition settings */
61 uint64_t limit_samples; /**< Target number of samples */
62 uint64_t limit_msec; /**< Target sampling time */
64 /* Opaque pointer passed in by frontend. */
67 /* Operational state */
68 enum nmadmm_req_t last_req; /**< Last request. */
69 gboolean last_req_pending; /**< Last request not answered yet.*/
70 int lowbatt; /**< Low battery. 1=low, 2=critical.*/
71 /* Temporary state across callbacks */
72 uint64_t num_samples; /**< Current #samples. */
73 GTimer* elapsed_msec; /**< Used for sampling with limit_msec*/
74 unsigned char buf[NMADMM_BUFSIZE]; /**< Buffer for read callback */
75 int buflen; /**< Data len in buf */
78 SR_PRIV int norma_dmm_receive_data(int fd, int revents, void *cb_data);
79 SR_PRIV int xgittoint(char xgit);