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[libsigrok.git] / src / hardware / gwinstek-gpd / protocol.h
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1/*
2 * This file is part of the libsigrok project.
3 *
4 * Copyright (C) 2018 Bastian Schmitz <bastian.schmitz@udo.edu>
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_GWINSTEK_GPD_PROTOCOL_H
21#define LIBSIGROK_HARDWARE_GWINSTEK_GPD_PROTOCOL_H
22
23#include <stdint.h>
24#include <glib.h>
25#include <libsigrok/libsigrok.h>
26#include "libsigrok-internal.h"
27
28#define LOG_PREFIX "gwinstek-gpd"
29
30enum {
31 GPD_2303S,
32};
33
34/* Maximum number of output channels handled by this driver. */
35#define MAX_CHANNELS 2
36
37#define CHANMODE_INDEPENDENT (1 << 0)
38#define CHANMODE_SERIES (1 << 1)
39#define CHANMODE_PARALLEL (1 << 2)
40
41struct channel_spec {
42 /* Min, max, step. */
43 gdouble voltage[3];
44 gdouble current[3];
45};
46
47struct gpd_model {
48 int modelid;
49 const char *name;
50 int channel_modes;
51 unsigned int num_channels;
52 struct channel_spec channels[MAX_CHANNELS];
53};
54
55struct per_channel_config {
56 /* Received from device. */
57 float output_voltage_last;
58 float output_current_last;
59 /* Set by frontend. */
60 float output_voltage_max;
61 float output_current_max;
62};
63
64struct dev_context {
65 /* Received from device. */
66 gboolean output_enabled;
67 int64_t req_sent_at;
68 gboolean reply_pending;
69
70 struct sr_sw_limits limits;
71 int channel_mode;
72 struct per_channel_config *config;
73 const struct gpd_model *model;
74};
75
76SR_PRIV int gpd_send_cmd(struct sr_serial_dev_inst *serial, const char *cmd, ...);
77SR_PRIV int gpd_receive_data(int fd, int revents, void *cb_data);
78SR_PRIV int gpd_receive_reply(struct sr_serial_dev_inst *serial, char *buf, int buflen);
79
80#endif