2 * This file is part of the libsigrok project.
4 * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
5 * Copyright (C) 2011 Olivier Fauchon <olivier@aixmarseille.com>
6 * Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
7 * Copyright (C) 2015 Bartosz Golaszewski <bgolaszewski@baylibre.com>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 #ifndef LIBSIGROK_HARDWARE_DEMO_PROTOCOL_H
25 #define LIBSIGROK_HARDWARE_DEMO_PROTOCOL_H
28 #include <libsigrok/libsigrok.h>
29 #include "libsigrok-internal.h"
31 #define LOG_PREFIX "demo"
33 /* The size in bytes of chunks to send through the session bus. */
34 #define LOGIC_BUFSIZE 4096
35 /* Size of the analog pattern space per channel. */
36 #define ANALOG_BUFSIZE 4096
38 /* Private, per-device-instance driver context. */
40 uint64_t cur_samplerate;
41 uint64_t limit_samples;
43 uint64_t sent_samples;
48 int32_t num_logic_channels;
49 unsigned int logic_unitsize;
50 /* There is only ever one logic channel group, so its pattern goes here. */
51 uint8_t logic_pattern;
52 unsigned char logic_data[LOGIC_BUFSIZE];
54 int32_t num_analog_channels;
56 gboolean avg; /* True if averaging is enabled */
60 /* Logic patterns we can generate. */
63 * Spells "sigrok" across 8 channels using '0's (with '1's as
64 * "background") when displayed using the 'bits' output format.
65 * The pattern is repeated every 8 channels, shifted to the right
70 /** Pseudo-random values on all channels. */
74 * Incrementing number across 8 channels. The pattern is repeated
75 * every 8 channels, shifted to the right in time by one bit.
79 /** All channels have a low logic state. */
82 /** All channels have a high logic state. */
86 /* Analog patterns we can generate. */
97 static const char *analog_pattern_str[] = {
107 float pattern_data[ANALOG_BUFSIZE];
108 unsigned int num_samples;
109 struct sr_datafeed_analog packet;
110 struct sr_analog_encoding encoding;
111 struct sr_analog_meaning meaning;
112 struct sr_analog_spec spec;
113 float avg_val; /* Average value */
114 unsigned num_avgs; /* Number of samples averaged */
117 SR_PRIV void demo_generate_analog_pattern(struct analog_gen *ag, uint64_t sample_rate);
118 SR_PRIV int demo_prepare_data(int fd, int revents, void *cb_data);