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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> | |
24 | #include <string.h> | |
25 | #include <ctype.h> | |
26 | #include <errno.h> | |
27 | #include <math.h> | |
28 | #include <glib.h> | |
29 | #include "libsigrok.h" | |
30 | #include "libsigrok-internal.h" | |
31 | ||
32 | #define LOG_PREFIX "norma-dmm" | |
33 | ||
34 | #define NMADMM_BUFSIZE 256 | |
35 | ||
36 | /** Norma DMM request types (used ones only, the DMMs support about 50). */ | |
37 | enum { | |
38 | NMADMM_REQ_IDN = 0, /**< Request identity */ | |
39 | NMADMM_REQ_STATUS, /**< Request device status (value + ...) */ | |
40 | }; | |
41 | ||
42 | /** Defines requests used to communicate with device. */ | |
43 | struct nmadmm_req { | |
44 | int req_type; /**< Request type. */ | |
45 | const char *req_str; /**< Request string. */ | |
46 | }; | |
47 | ||
48 | /** Strings for requests. */ | |
49 | extern const struct nmadmm_req nmadmm_requests[]; | |
50 | ||
51 | /** Private, per-device-instance driver context. */ | |
52 | struct dev_context { | |
53 | /* Model-specific information */ | |
54 | char *version; /**< Version string */ | |
55 | int type; /**< DM9x0, e.g. 5 = DM950 */ | |
56 | ||
57 | /* Acquisition settings */ | |
58 | uint64_t limit_samples; /**< Target number of samples */ | |
59 | uint64_t limit_msec; /**< Target sampling time */ | |
60 | ||
61 | /* Opaque pointer passed in by frontend. */ | |
62 | void *cb_data; | |
63 | ||
64 | /* Operational state */ | |
65 | int last_req; /**< Last request. */ | |
66 | gboolean last_req_pending; /**< Last request not answered yet. */ | |
67 | int lowbatt; /**< Low battery. 1=low, 2=critical. */ | |
68 | ||
69 | /* Temporary state across callbacks */ | |
70 | uint64_t num_samples; /**< Current #samples. */ | |
71 | GTimer *elapsed_msec; /**< Used for limit_msec */ | |
72 | uint8_t buf[NMADMM_BUFSIZE]; /**< Buffer for read callback */ | |
73 | int buflen; /**< Data len in buf */ | |
74 | }; | |
75 | ||
76 | SR_PRIV int norma_dmm_receive_data(int fd, int revents, void *cb_data); | |
77 | SR_PRIV int xgittoint(char xgit); | |
78 | ||
79 | #endif |