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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> | |
e790bd5c UH |
24 | #include <string.h> |
25 | #include <ctype.h> | |
26 | #include <errno.h> | |
27 | #include <math.h> | |
bfd48770 MH |
28 | #include <glib.h> |
29 | #include "libsigrok.h" | |
30 | #include "libsigrok-internal.h" | |
31 | ||
32 | /* Message logging helpers with subsystem-specific prefix string. */ | |
33 | #define LOG_PREFIX "norma-dmm: " | |
34 | #define sr_log(l, s, args...) sr_log(l, LOG_PREFIX s, ## args) | |
35 | #define sr_spew(s, args...) sr_spew(LOG_PREFIX s, ## args) | |
36 | #define sr_dbg(s, args...) sr_dbg(LOG_PREFIX s, ## args) | |
37 | #define sr_info(s, args...) sr_info(LOG_PREFIX s, ## args) | |
38 | #define sr_warn(s, args...) sr_warn(LOG_PREFIX s, ## args) | |
39 | #define sr_err(s, args...) sr_err(LOG_PREFIX s, ## args) | |
40 | ||
f8e76e2e MH |
41 | #define NMADMM_BUFSIZE 256 |
42 | ||
e790bd5c UH |
43 | /** Norma DMM request types (used ones only, the DMMs support about 50). */ |
44 | enum { | |
f8e76e2e MH |
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. */ | |
50 | struct nmadmm_req { | |
e790bd5c UH |
51 | int req_type; /**< Request type. */ |
52 | const char *req_str; /**< Request string. */ | |
f8e76e2e MH |
53 | }; |
54 | ||
55 | /** Strings for requests. */ | |
56 | extern const struct nmadmm_req nmadmm_requests[]; | |
57 | ||
bfd48770 MH |
58 | /** Private, per-device-instance driver context. */ |
59 | struct dev_context { | |
60 | /* Model-specific information */ | |
e790bd5c UH |
61 | char *version; /**< Version string */ |
62 | int type; /**< DM9x0, e.g. 5 = DM950 */ | |
63 | ||
bfd48770 | 64 | /* Acquisition settings */ |
f8e76e2e MH |
65 | uint64_t limit_samples; /**< Target number of samples */ |
66 | uint64_t limit_msec; /**< Target sampling time */ | |
bfd48770 | 67 | |
f8e76e2e MH |
68 | /* Opaque pointer passed in by frontend. */ |
69 | void *cb_data; | |
bfd48770 | 70 | |
f8e76e2e | 71 | /* Operational state */ |
e790bd5c UH |
72 | int last_req; /**< Last request. */ |
73 | gboolean last_req_pending; /**< Last request not answered yet. */ | |
74 | int lowbatt; /**< Low battery. 1=low, 2=critical. */ | |
75 | ||
bfd48770 | 76 | /* Temporary state across callbacks */ |
f8e76e2e | 77 | uint64_t num_samples; /**< Current #samples. */ |
e790bd5c UH |
78 | GTimer *elapsed_msec; /**< Used for limit_msec */ |
79 | uint8_t buf[NMADMM_BUFSIZE]; /**< Buffer for read callback */ | |
f8e76e2e | 80 | int buflen; /**< Data len in buf */ |
bfd48770 MH |
81 | }; |
82 | ||
83 | SR_PRIV int norma_dmm_receive_data(int fd, int revents, void *cb_data); | |
f8e76e2e | 84 | SR_PRIV int xgittoint(char xgit); |
bfd48770 MH |
85 | |
86 | #endif |