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1/*
2 * This file is part of the libsigrok project.
3 *
4 * Copyright (C) 2013 Matthias Heidbrink <m-sigrok@heidbrink.biz>
5 *
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.
10 *
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.
15 *
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/>.
18 */
19
20#ifndef LIBSIGROK_HARDWARE_NORMA_DMM_PROTOCOL_H
21#define LIBSIGROK_HARDWARE_NORMA_DMM_PROTOCOL_H
22
23#include <stdint.h>
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24#include <string.h>
25#include <ctype.h>
26#include <errno.h>
27#include <math.h>
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28#include <glib.h>
29#include "libsigrok.h"
30#include "libsigrok-internal.h"
31
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32/** @file
33 * Norma DM9x0/Siemens B102x DMMs driver.
34 * @internal
35 */
36
3544f848 37#define LOG_PREFIX "norma-dmm"
bfd48770 38
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39#define NMADMM_BUFSIZE 256
40
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41#define NMADMM_TIMEOUT_MS 2000 /**< Request timeout. */
42
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43/** Norma DMM request types (used ones only, the DMMs support about 50). */
44enum {
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45 NMADMM_REQ_IDN = 0, /**< Request identity */
46 NMADMM_REQ_STATUS, /**< Request device status (value + ...) */
47};
48
49/** Defines requests used to communicate with device. */
50struct nmadmm_req {
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51 int req_type; /**< Request type. */
52 const char *req_str; /**< Request string. */
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53};
54
55/** Strings for requests. */
56extern const struct nmadmm_req nmadmm_requests[];
57
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58/** Private, per-device-instance driver context. */
59struct dev_context {
60 /* Model-specific information */
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61 char *version; /**< Version string */
62 int type; /**< DM9x0, e.g. 5 = DM950 */
63
bfd48770 64 /* Acquisition settings */
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65 uint64_t limit_samples; /**< Target number of samples */
66 uint64_t limit_msec; /**< Target sampling time */
bfd48770 67
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68 /* Opaque pointer passed in by frontend. */
69 void *cb_data;
bfd48770 70
f8e76e2e 71 /* Operational state */
e790bd5c 72 int last_req; /**< Last request. */
a4e435eb 73 int64_t req_sent_at; /**< Request sent. */
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74 gboolean last_req_pending; /**< Last request not answered yet. */
75 int lowbatt; /**< Low battery. 1=low, 2=critical. */
76
bfd48770 77 /* Temporary state across callbacks */
f8e76e2e 78 uint64_t num_samples; /**< Current #samples. */
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79 GTimer *elapsed_msec; /**< Used for limit_msec */
80 uint8_t buf[NMADMM_BUFSIZE]; /**< Buffer for read callback */
f8e76e2e 81 int buflen; /**< Data len in buf */
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82};
83
84SR_PRIV int norma_dmm_receive_data(int fd, int revents, void *cb_data);
f8e76e2e 85SR_PRIV int xgittoint(char xgit);
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86
87#endif