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Commit | Line | Data |
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7dc55d93 | 1 | /* |
50985c20 | 2 | * This file is part of the libsigrok project. |
7dc55d93 AG |
3 | * |
4 | * Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com> | |
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 | ||
21a7f269 UH |
20 | #ifndef LIBSIGROK_HARDWARE_SERIAL_DMM_PROTOCOL_H |
21 | #define LIBSIGROK_HARDWARE_SERIAL_DMM_PROTOCOL_H | |
7dc55d93 | 22 | |
3544f848 | 23 | #define LOG_PREFIX "serial-dmm" |
7dc55d93 | 24 | |
729b01f9 | 25 | struct dmm_info { |
bcbef5ed ML |
26 | /** libsigrok driver info struct. */ |
27 | struct sr_dev_driver di; | |
95ecc765 | 28 | /** Manufacturer/brand. */ |
2c240774 | 29 | const char *vendor; |
95ecc765 | 30 | /** Model. */ |
2c240774 | 31 | const char *device; |
95ecc765 | 32 | /** serialconn string. */ |
2c240774 | 33 | const char *conn; |
95ecc765 | 34 | /** Baud rate. */ |
729b01f9 | 35 | uint32_t baudrate; |
95ecc765 | 36 | /** Packet size in bytes. */ |
729b01f9 | 37 | int packet_size; |
2baac44d MH |
38 | /** Request timeout [ms] before request is considered lost and a new |
39 | * one is sent. Used only if device needs polling. */ | |
40 | int64_t req_timeout_ms; | |
41 | /** Delay between reception of packet and next request. Some DMMs | |
42 | * need this. Used only if device needs polling. */ | |
43 | int64_t req_delay_ms; | |
5d037430 | 44 | /** Packet request function. */ |
ce3777ad | 45 | int (*packet_request)(struct sr_serial_dev_inst *); |
5d037430 | 46 | /** Packet validation function. */ |
729b01f9 | 47 | gboolean (*packet_valid)(const uint8_t *); |
5d037430 | 48 | /** Packet parsing function. */ |
729b01f9 | 49 | int (*packet_parse)(const uint8_t *, float *, |
5faebab2 | 50 | struct sr_datafeed_analog_old *, void *); |
5d037430 | 51 | /** */ |
5faebab2 | 52 | void (*dmm_details)(struct sr_datafeed_analog_old *, void *); |
bcbef5ed ML |
53 | /** Size of chipset info struct. */ |
54 | gsize info_size; | |
729b01f9 UH |
55 | }; |
56 | ||
729b01f9 | 57 | #define DMM_BUFSIZE 256 |
7dc55d93 | 58 | |
bbabddbd | 59 | /** Private, per-device-instance driver context. */ |
7dc55d93 | 60 | struct dev_context { |
bbabddbd | 61 | /** The current sampling limit (in number of samples). */ |
7dc55d93 | 62 | uint64_t limit_samples; |
7dc55d93 | 63 | |
f9b9bd63 AG |
64 | /** The time limit (in milliseconds). */ |
65 | uint64_t limit_msec; | |
66 | ||
bbabddbd | 67 | /** Opaque pointer passed in by the frontend. */ |
7dc55d93 AG |
68 | void *cb_data; |
69 | ||
bbabddbd | 70 | /** The current number of already received samples. */ |
7dc55d93 | 71 | uint64_t num_samples; |
bbabddbd | 72 | |
2baac44d | 73 | /** The starting time of current sampling run. */ |
f9b9bd63 AG |
74 | int64_t starttime; |
75 | ||
7dc55d93 | 76 | uint8_t buf[DMM_BUFSIZE]; |
bbabddbd UH |
77 | int bufoffset; |
78 | int buflen; | |
2baac44d MH |
79 | |
80 | /** The timestamp [µs] to send the next request. | |
81 | * Used only if device needs polling. */ | |
82 | int64_t req_next_at; | |
7dc55d93 AG |
83 | }; |
84 | ||
bcbef5ed ML |
85 | SR_PRIV int req_packet(struct sr_dev_inst *sdi); |
86 | SR_PRIV int receive_data(int fd, int revents, void *cb_data); | |
f086b830 | 87 | |
bbabddbd | 88 | #endif |