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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2012-2013 Uwe Hermann <uwe@hermann-uwe.de> | |
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 2 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, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #ifndef LIBSIGROK_HARDWARE_UNI_T_DMM_PROTOCOL_H | |
22 | #define LIBSIGROK_HARDWARE_UNI_T_DMM_PROTOCOL_H | |
23 | ||
24 | #include <stdint.h> | |
25 | #include <glib.h> | |
26 | #include <libusb.h> | |
27 | #include <libsigrok/libsigrok.h> | |
28 | #include "libsigrok-internal.h" | |
29 | ||
30 | #define LOG_PREFIX "uni-t-dmm" | |
31 | ||
32 | struct dmm_info { | |
33 | struct sr_dev_driver di; | |
34 | const char *vendor; | |
35 | const char *device; | |
36 | uint32_t baudrate; | |
37 | int packet_size; | |
38 | gboolean (*packet_valid)(const uint8_t *); | |
39 | int (*packet_parse)(const uint8_t *, float *, | |
40 | struct sr_datafeed_analog_old *, void *); | |
41 | void (*dmm_details)(struct sr_datafeed_analog_old *, void *); | |
42 | gsize info_size; | |
43 | }; | |
44 | ||
45 | #define CHUNK_SIZE 8 | |
46 | ||
47 | #define DMM_BUFSIZE 256 | |
48 | ||
49 | /** Private, per-device-instance driver context. */ | |
50 | struct dev_context { | |
51 | /** The current sampling limit (in number of samples). */ | |
52 | uint64_t limit_samples; | |
53 | ||
54 | /** The current sampling limit (in ms). */ | |
55 | uint64_t limit_msec; | |
56 | ||
57 | /** Opaque pointer passed in by the frontend. */ | |
58 | void *cb_data; | |
59 | ||
60 | /** The current number of already received samples. */ | |
61 | uint64_t num_samples; | |
62 | ||
63 | int64_t starttime; | |
64 | ||
65 | gboolean first_run; | |
66 | ||
67 | uint8_t protocol_buf[DMM_BUFSIZE]; | |
68 | uint8_t bufoffset; | |
69 | uint8_t buflen; | |
70 | }; | |
71 | ||
72 | SR_PRIV int uni_t_dmm_receive_data(int fd, int revents, void *cb_data); | |
73 | ||
74 | #endif |