2 * This file is part of the libsigrok project.
4 * Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
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.
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.
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/>.
20 #ifndef LIBSIGROK_HARDWARE_SERIAL_DMM_PROTOCOL_H
21 #define LIBSIGROK_HARDWARE_SERIAL_DMM_PROTOCOL_H
23 #define LOG_PREFIX "serial-dmm"
26 /** libsigrok driver info struct. */
27 struct sr_dev_driver di;
28 /** Manufacturer/brand. */
32 /** serialcomm string. */
33 const char *serialcomm;
34 /** Packet size in bytes. */
37 * Request timeout [ms] before request is considered lost and a new
38 * one is sent. Used only if device needs polling.
40 int64_t req_timeout_ms;
42 * Delay between reception of packet and next request. Some DMMs
43 * need this. Used only if device needs polling.
46 /** Packet request function. */
47 int (*packet_request)(struct sr_serial_dev_inst *);
48 /** Number of channels / displays. */
50 /** (Optional) printf formats for channel names. */
51 const char **channel_formats;
52 /** Packet validation function. */
53 gboolean (*packet_valid)(const uint8_t *);
54 /** Packet parsing function. */
55 int (*packet_parse)(const uint8_t *, float *,
56 struct sr_datafeed_analog *, void *);
58 void (*dmm_details)(struct sr_datafeed_analog *, void *);
59 /** Size of chipset info struct. */
63 #define DMM_BUFSIZE 256
66 struct sr_sw_limits limits;
68 uint8_t buf[DMM_BUFSIZE];
73 * The timestamp [µs] to send the next request.
74 * Used only if device needs polling.
79 SR_PRIV int req_packet(struct sr_dev_inst *sdi);
80 SR_PRIV int receive_data(int fd, int revents, void *cb_data);