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demo: Minor cosmetics.
[libsigrok.git] / src / hardware / demo / protocol.c
CommitLineData
ba508e22
UH		 1/*
2 * This file is part of the libsigrok project.
3 *
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>
94f364ec 8 * Copyright (C) 2019 Frank Stettner <frank-stettner@gmx.net>
ba508e22
UH		 9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
2ea1fdf1 21 * along with this program; if not, see <http://www.gnu.org/licenses/>.
ba508e22
UH		 22 */
23
24#include <config.h>
25#include <stdlib.h>
26#include <string.h>
27#include <math.h>
28#include <libsigrok/libsigrok.h>
29#include "libsigrok-internal.h"
30#include "protocol.h"
31
32#define ANALOG_SAMPLES_PER_PERIOD 20
33
34static const uint8_t pattern_sigrok[] = {
35 0x4c, 0x92, 0x92, 0x92, 0x64, 0x00, 0x00, 0x00,
36 0x82, 0xfe, 0xfe, 0x82, 0x00, 0x00, 0x00, 0x00,
37 0x7c, 0x82, 0x82, 0x92, 0x74, 0x00, 0x00, 0x00,
38 0xfe, 0x12, 0x12, 0x32, 0xcc, 0x00, 0x00, 0x00,
39 0x7c, 0x82, 0x82, 0x82, 0x7c, 0x00, 0x00, 0x00,
40 0xfe, 0x10, 0x28, 0x44, 0x82, 0x00, 0x00, 0x00,
41 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
42 0xbe, 0xbe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
43};
44
81d53a29
GS		 45static const uint8_t pattern_squid[128][128 / 8] = {
46 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
47 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
48 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
49 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
50 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
51 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
52 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
53 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
54 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
55 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
56 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
57 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x78, 0xe0, 0x00, },
58 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfc, 0xe1, 0x01, },
59 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0xe1, 0x01, },
60 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0xe3, 0x03, },
61 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xe3, 0x03, },
62 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xc3, 0x03, },
63 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xcf, 0xc7, 0x03, },
64 { 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x8f, 0xc7, 0x03, },
65 { 0x00, 0x00, 0x00, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x8f, 0x87, 0x03, },
66 { 0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x8f, 0xc7, 0x03, },
67 { 0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x8f, 0xcf, 0x03, },
68 { 0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0xcf, 0x03, },
69 { 0x00, 0x00, 0x00, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1f, 0xff, 0x03, },
70 { 0x00, 0x00, 0x00, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1e, 0xff, 0x03, },
71 { 0x00, 0x00, 0x00, 0x80, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3e, 0xfe, 0x01, },
72 { 0x00, 0x00, 0x00, 0x80, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3c, 0xfe, 0x01, },
73 { 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0xfc, 0x00, },
74 { 0x00, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
75 { 0x00, 0x00, 0x00, 0x00, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
76 { 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
77 { 0x00, 0xc0, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
78 { 0x00, 0x80, 0x01, 0x00, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x38, 0xfe, 0xff, 0x03, },
79 { 0x00, 0x00, 0x07, 0x00, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7c, 0xfe, 0xff, 0x03, },
80 { 0x00, 0x00, 0x1c, 0x00, 0xe0, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7c, 0xfe, 0xff, 0x03, },
81 { 0x00, 0x00, 0x78, 0x00, 0xc0, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7c, 0xfe, 0xff, 0x03, },
82 { 0x00, 0x00, 0xe0, 0x00, 0x80, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x38, 0xfe, 0xff, 0x03, },
83 { 0x00, 0x00, 0xc0, 0x03, 0x00, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
84 { 0x00, 0x00, 0x00, 0x07, 0x00, 0x0e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
85 { 0x00, 0x00, 0x00, 0x1c, 0x00, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
86 { 0x00, 0x00, 0x00, 0xf8, 0x00, 0x38, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x03, 0x00, },
87 { 0x00, 0x00, 0x00, 0xf0, 0x01, 0x38, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x01, 0x00, 0xf0, 0x1f, 0x1c, },
88 { 0x00, 0x00, 0x00, 0xe0, 0x07, 0x70, 0x00, 0x00, 0x00, 0xfe, 0xff, 0x0f, 0x00, 0xfc, 0x3f, 0x3c, },
89 { 0x80, 0x03, 0x00, 0xc0, 0x0f, 0xe0, 0x00, 0x00, 0x80, 0xff, 0xff, 0x3f, 0x00, 0xfc, 0x7f, 0x7c, },
90 { 0x00, 0x1e, 0x00, 0x00, 0x1f, 0xc0, 0x01, 0x00, 0xc0, 0xff, 0xff, 0x7f, 0x00, 0xfe, 0xff, 0x7c, },
91 { 0x00, 0xf0, 0x01, 0x00, 0x7c, 0x80, 0x03, 0x00, 0xc0, 0xff, 0xff, 0xff, 0x00, 0xfe, 0xff, 0x7c, },
92 { 0x00, 0xc0, 0x0f, 0x00, 0xf0, 0x00, 0x07, 0x00, 0xc0, 0xff, 0xff, 0xff, 0x00, 0x3f, 0xf8, 0x78, },
93 { 0x00, 0x00, 0x3e, 0x00, 0xc0, 0x03, 0x0e, 0x00, 0xe0, 0xff, 0xff, 0xff, 0x00, 0x0f, 0xf0, 0xf0, },
94 { 0x00, 0x00, 0xf0, 0x07, 0x80, 0x07, 0x3c, 0x00, 0xe0, 0xff, 0xff, 0xff, 0x00, 0x0f, 0xf0, 0xf0, },
95 { 0x00, 0x00, 0x80, 0x3f, 0x00, 0x1e, 0x78, 0x00, 0xe0, 0xff, 0xff, 0xff, 0x00, 0x0f, 0xe0, 0xf0, },
96 { 0x00, 0x00, 0x00, 0xff, 0x00, 0x7c, 0xe0, 0x01, 0xe0, 0xff, 0xff, 0xff, 0x00, 0x0f, 0xe0, 0xf0, },
97 { 0x00, 0x00, 0x00, 0xfc, 0x03, 0xf0, 0xc1, 0x07, 0xf0, 0xff, 0xff, 0xff, 0x00, 0x0f, 0xf0, 0xf0, },
98 { 0x00, 0x00, 0x00, 0xe0, 0x1f, 0xc0, 0x03, 0x1f, 0xe0, 0xff, 0xff, 0xff, 0x00, 0x0f, 0xf0, 0x78, },
99 { 0x00, 0x00, 0x00, 0x00, 0xfe, 0x00, 0x1f, 0xfc, 0xe0, 0xff, 0xff, 0xff, 0x01, 0xff, 0xff, 0x7f, },
100 { 0xf8, 0x03, 0x00, 0x00, 0xf0, 0x07, 0xfe, 0xf0, 0xff, 0xff, 0xff, 0xff, 0x01, 0xff, 0xff, 0x7f, },
101 { 0x80, 0xff, 0x01, 0x00, 0x80, 0x3f, 0xf0, 0x8f, 0xff, 0xff, 0xff, 0xff, 0x00, 0xfe, 0xff, 0x3f, },
102 { 0x00, 0xf0, 0xff, 0x07, 0x00, 0xfc, 0x83, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0xfe, 0xff, 0x3f, },
103 { 0x00, 0x00, 0xfc, 0x7f, 0x00, 0xe0, 0x7f, 0xfc, 0xff, 0xff, 0xff, 0xff, 0x00, 0xfe, 0xff, 0x1f, },
104 { 0x00, 0x00, 0xc0, 0xff, 0x1f, 0x00, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0xfc, 0xff, 0x03, },
105 { 0x00, 0x00, 0x00, 0xf8, 0xff, 0x07, 0xc0, 0xff, 0xff, 0xff, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00, },
106 { 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x0f, 0xe0, 0xff, 0xff, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00, },
107 { 0x00, 0x00, 0x00, 0x00, 0x00, 0xfc, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00, },
108 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00, },
109 { 0x00, 0x00, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x01, 0xff, 0xff, 0x03, },
110 { 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x01, 0xff, 0xff, 0x03, },
111 { 0x00, 0x10, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0xff, 0xff, 0x03, },
112 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0xff, 0xff, 0x03, },
113 { 0x00, 0x00, 0x00, 0x00, 0x00, 0xfc, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0xff, 0xff, 0x03, },
114 { 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x0f, 0xe0, 0xff, 0xff, 0xff, 0xff, 0x00, 0x7c, 0x00, 0x00, },
115 { 0x00, 0x00, 0x00, 0xf8, 0xff, 0x07, 0xc0, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x3c, 0x00, 0x00, },
116 { 0x00, 0x00, 0xc0, 0xff, 0x1f, 0x00, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x1e, 0x00, 0x00, },
117 { 0x00, 0x00, 0xf8, 0x7f, 0x00, 0xe0, 0x7f, 0xfc, 0xff, 0xff, 0xff, 0xff, 0x00, 0x1e, 0x00, 0x00, },
118 { 0x00, 0xf0, 0xff, 0x07, 0x00, 0xfc, 0x83, 0xff, 0xff, 0xff, 0xff, 0xff, 0x01, 0x0f, 0x00, 0x00, },
119 { 0x80, 0xff, 0x01, 0x00, 0x80, 0x3f, 0xf0, 0x8f, 0xff, 0xff, 0xff, 0xff, 0x01, 0x0f, 0x00, 0x00, },
120 { 0xf8, 0x03, 0x00, 0x00, 0xf0, 0x07, 0xfe, 0xf0, 0xff, 0xff, 0xff, 0xff, 0x00, 0x0f, 0x00, 0x00, },
121 { 0x00, 0x00, 0x00, 0x00, 0xfe, 0x00, 0x1f, 0xfc, 0xe0, 0xff, 0xff, 0xff, 0x00, 0x0f, 0x00, 0x00, },
122 { 0x00, 0x00, 0x00, 0xe0, 0x1f, 0xc0, 0x07, 0x1f, 0xf0, 0xff, 0xff, 0xff, 0x00, 0x06, 0x00, 0x00, },
123 { 0x00, 0x00, 0x00, 0xfc, 0x03, 0xf0, 0xc1, 0x07, 0xf0, 0xff, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00, },
124 { 0x00, 0x00, 0x00, 0xff, 0x00, 0x7c, 0xe0, 0x01, 0xf0, 0xff, 0xff, 0xff, 0x01, 0xe0, 0x1f, 0x00, },
125 { 0x00, 0x00, 0x80, 0x3f, 0x00, 0x1e, 0x78, 0x00, 0xf0, 0xff, 0xff, 0xff, 0x01, 0xf0, 0x7f, 0x00, },
126 { 0x00, 0x00, 0xf0, 0x0f, 0x80, 0x07, 0x3c, 0x00, 0xe0, 0xff, 0xff, 0xff, 0x01, 0xfc, 0xff, 0x00, },
127 { 0x00, 0x00, 0x3e, 0x00, 0xc0, 0x03, 0x0e, 0x00, 0xe0, 0xff, 0xff, 0xff, 0x01, 0xfc, 0xff, 0x01, },
128 { 0x00, 0xc0, 0x0f, 0x00, 0xf0, 0x00, 0x07, 0x00, 0xe0, 0xff, 0xff, 0xff, 0x01, 0xfe, 0xff, 0x01, },
129 { 0x00, 0xf0, 0x01, 0x00, 0x7c, 0x80, 0x03, 0x00, 0xe0, 0xff, 0xff, 0xff, 0x00, 0xff, 0xff, 0x03, },
130 { 0x00, 0x3e, 0x00, 0x00, 0x1f, 0xc0, 0x01, 0x00, 0x80, 0xff, 0xff, 0xff, 0x00, 0x1f, 0xe0, 0x03, },
131 { 0x80, 0x03, 0x00, 0xc0, 0x0f, 0xe0, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0x00, 0x0f, 0xc0, 0x03, },
132 { 0x00, 0x00, 0x00, 0xe0, 0x07, 0x70, 0x00, 0x00, 0x00, 0xfc, 0xff, 0xff, 0x00, 0x0f, 0xc0, 0x03, },
133 { 0x00, 0x00, 0x00, 0xf0, 0x01, 0x38, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x01, 0x00, 0x0f, 0x80, 0x03, },
134 { 0x00, 0x00, 0x00, 0xf8, 0x00, 0x38, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0xc0, 0x03, },
135 { 0x00, 0x00, 0x00, 0x1c, 0x00, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0xc0, 0x03, },
136 { 0x00, 0x00, 0x00, 0x07, 0x00, 0x0e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1f, 0xe0, 0x03, },
137 { 0x00, 0x00, 0xc0, 0x03, 0x00, 0x0f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7f, 0xf8, 0x03, },
138 { 0x00, 0x00, 0xe0, 0x00, 0x80, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0xff, 0x01, },
139 { 0x00, 0x00, 0x78, 0x00, 0xc0, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0xff, 0x01, },
140 { 0x00, 0x00, 0x1c, 0x00, 0xe0, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfc, 0xff, 0x00, },
141 { 0x00, 0x00, 0x06, 0x00, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x7f, 0x00, },
142 { 0x00, 0x80, 0x03, 0x00, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, 0x1f, 0x00, },
143 { 0x00, 0xc0, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
144 { 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
145 { 0x00, 0x00, 0x00, 0x00, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
146 { 0x00, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0xff, 0x01, },
147 { 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0xff, 0x03, },
148 { 0x00, 0x00, 0x00, 0x80, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0xff, 0x03, },
149 { 0x00, 0x00, 0x00, 0x80, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0xff, 0x03, },
150 { 0x00, 0x00, 0x00, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0xff, 0x03, },
151 { 0x00, 0x00, 0x00, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0xff, 0x03, },
152 { 0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x07, 0x00, },
153 { 0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x07, 0x00, },
154 { 0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, 0x0f, 0x00, },
155 { 0x00, 0x00, 0x00, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, 0x1f, 0x00, },
156 { 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf0, 0x3f, 0x00, },
157 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfc, 0xff, 0x00, },
158 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0xff, 0x01, },
159 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xfc, 0x03, },
160 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7f, 0xf8, 0x03, },
161 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1f, 0xf0, 0x03, },
162 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0xc0, 0x03, },
163 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, },
164 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
165 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
166 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
167 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
168 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
169 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
170 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
171 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
172 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
173 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
174};
175
a6e5d2f6 176SR_PRIV void demo_generate_analog_pattern(struct dev_context *devc)
ba508e22
UH		 177{
178 double t, frequency;
a6e5d2f6
FS		 179 float amplitude, offset;
180 struct analog_pattern *pattern;
ba508e22 181 unsigned int num_samples, i;
a6e5d2f6 182 float value;
ba508e22
UH		 183 int last_end;
184
ba508e22 185 num_samples = ANALOG_BUFSIZE / sizeof(float);
a6e5d2f6
FS		 186 frequency = (double) devc->cur_samplerate / ANALOG_SAMPLES_PER_PERIOD;
187 amplitude = DEFAULT_ANALOG_AMPLITUDE;
188 offset = DEFAULT_ANALOG_OFFSET;
189
6449b2e0
UH		 190 /*
191 * FIXME: We actually need only one period. A ringbuffer would be
192 * useful here.
193 * Make sure the number of samples we put out is an integer
194 * multiple of our period size.
195 */
a6e5d2f6 196
6449b2e0 197 /* PATTERN_SQUARE: */
a6e5d2f6
FS		 198 sr_dbg("Generating %s pattern.", analog_pattern_str[PATTERN_SQUARE]);
199 pattern = g_malloc(sizeof(struct analog_pattern));
200 value = amplitude;
201 last_end = 0;
202 for (i = 0; i < num_samples; i++) {
203 if (i % 5 == 0)
204 value = -value;
205 if (i % 10 == 0)
206 last_end = i;
207 pattern->data[i] = value + offset;
ba508e22 208 }
a6e5d2f6
FS		 209 pattern->num_samples = last_end;
210 devc->analog_patterns[PATTERN_SQUARE] = pattern;
211
6449b2e0 212 /* Readjusting num_samples for all other patterns. */
a6e5d2f6
FS		 213 while (num_samples % ANALOG_SAMPLES_PER_PERIOD != 0)
214 num_samples--;
215
216 /* PATTERN_SINE: */
217 sr_dbg("Generating %s pattern.", analog_pattern_str[PATTERN_SINE]);
218 pattern = g_malloc(sizeof(struct analog_pattern));
219 for (i = 0; i < num_samples; i++) {
220 t = (double) i / (double) devc->cur_samplerate;
221 pattern->data[i] = sin(2 * G_PI * frequency * t) * amplitude + offset;
222 }
223 pattern->num_samples = last_end;
224 devc->analog_patterns[PATTERN_SINE] = pattern;
225
226 /* PATTERN_TRIANGLE: */
227 sr_dbg("Generating %s pattern.", analog_pattern_str[PATTERN_TRIANGLE]);
228 pattern = g_malloc(sizeof(struct analog_pattern));
229 for (i = 0; i < num_samples; i++) {
230 t = (double) i / (double) devc->cur_samplerate;
231 pattern->data[i] = (2 / G_PI) * asin(sin(2 * G_PI * frequency * t)) *
232 amplitude + offset;
233 }
234 pattern->num_samples = last_end;
235 devc->analog_patterns[PATTERN_TRIANGLE] = pattern;
236
237 /* PATTERN_SAWTOOTH: */
238 sr_dbg("Generating %s pattern.", analog_pattern_str[PATTERN_SAWTOOTH]);
239 pattern = g_malloc(sizeof(struct analog_pattern));
240 for (i = 0; i < num_samples; i++) {
241 t = (double) i / (double) devc->cur_samplerate;
242 pattern->data[i] = 2 * ((t * frequency) - floor(0.5f + t * frequency)) *
243 amplitude + offset;
244 }
245 pattern->num_samples = last_end;
246 devc->analog_patterns[PATTERN_SAWTOOTH] = pattern;
ba508e22
UH		 247}
248
03733430
GS		 249static uint64_t encode_number_to_gray(uint64_t nr)
250{
251 return nr ^ (nr >> 1);
252}
253
254static void set_logic_data(uint64_t bits, uint8_t *data, size_t len)
255{
256 while (len--) {
257 *data++ = bits & 0xff;
258 bits >>= 8;
259 }
260}
261
ba508e22
UH		 262static void logic_generator(struct sr_dev_inst *sdi, uint64_t size)
263{
264 struct dev_context *devc;
265 uint64_t i, j;
266 uint8_t pat;
81d53a29
GS		 267 uint8_t *sample;
268 const uint8_t *image_col;
269 size_t col_count, col_height;
03733430 270 uint64_t gray;
ba508e22
UH		 271
272 devc = sdi->priv;
273
274 switch (devc->logic_pattern) {
275 case PATTERN_SIGROK:
276 memset(devc->logic_data, 0x00, size);
277 for (i = 0; i < size; i += devc->logic_unitsize) {
278 for (j = 0; j < devc->logic_unitsize; j++) {
279 pat = pattern_sigrok[(devc->step + j) % sizeof(pattern_sigrok)] >> 1;
280 devc->logic_data[i + j] = ~pat;
281 }
282 devc->step++;
283 }
284 break;
285 case PATTERN_RANDOM:
286 for (i = 0; i < size; i++)
287 devc->logic_data[i] = (uint8_t)(rand() & 0xff);
288 break;
289 case PATTERN_INC:
290 for (i = 0; i < size; i++) {
8ebad343 291 for (j = 0; j < devc->logic_unitsize; j++)
ba508e22 292 devc->logic_data[i + j] = devc->step;
ba508e22
UH		 293 devc->step++;
294 }
295 break;
845060fa
SA		 296 case PATTERN_WALKING_ONE:
297 /* j contains the value of the highest bit */
d1078180 298 j = 1 << (devc->num_logic_channels - 1);
845060fa
SA		 299 for (i = 0; i < size; i++) {
300 devc->logic_data[i] = devc->step;
301 if (devc->step == 0)
302 devc->step = 1;
303 else
304 if (devc->step == j)
305 devc->step = 0;
306 else
307 devc->step <<= 1;
308 }
309 break;
310 case PATTERN_WALKING_ZERO:
311 /* Same as walking one, only with inverted output */
312 /* j contains the value of the highest bit */
d1078180 313 j = 1 << (devc->num_logic_channels - 1);
845060fa
SA		 314 for (i = 0; i < size; i++) {
315 devc->logic_data[i] = ~devc->step;
316 if (devc->step == 0)
317 devc->step = 1;
318 else
319 if (devc->step == j)
320 devc->step = 0;
321 else
322 devc->step <<= 1;
323 }
324 break;
ba508e22
UH		 325 case PATTERN_ALL_LOW:
326 case PATTERN_ALL_HIGH:
327 /* These were set when the pattern mode was selected. */
328 break;
81d53a29
GS		 329 case PATTERN_SQUID:
330 memset(devc->logic_data, 0x00, size);
331 col_count = ARRAY_SIZE(pattern_squid);
332 col_height = ARRAY_SIZE(pattern_squid[0]);
333 for (i = 0; i < size; i += devc->logic_unitsize) {
334 sample = &devc->logic_data[i];
335 image_col = pattern_squid[devc->step];
336 for (j = 0; j < devc->logic_unitsize; j++) {
337 pat = image_col[j % col_height];
338 sample[j] = pat;
339 }
340 devc->step++;
341 devc->step %= col_count;
342 }
343 break;
03733430
GS		 344 case PATTERN_GRAYCODE:
345 for (i = 0; i < size; i += devc->logic_unitsize) {
346 devc->step++;
347 devc->step &= devc->all_logic_channels_mask;
348 gray = encode_number_to_gray(devc->step);
349 gray &= devc->all_logic_channels_mask;
350 set_logic_data(gray, &devc->logic_data[i], devc->logic_unitsize);
351 }
352 break;
ba508e22
UH		 353 default:
354 sr_err("Unknown pattern: %d.", devc->logic_pattern);
355 break;
356 }
357}
358
4a465510
GS		 359/*
360 * Fixup a memory image of generated logic data before it gets sent to
361 * the session's datafeed. Mask out content from disabled channels.
362 *
363 * TODO: Need we apply a channel map, and enforce a dense representation
364 * of the enabled channels' data?
365 */
366static void logic_fixup_feed(struct dev_context *devc,
367 struct sr_datafeed_logic *logic)
368{
369 size_t fp_off;
370 uint8_t fp_mask;
371 size_t off, idx;
372 uint8_t *sample;
373
374 fp_off = devc->first_partial_logic_index;
375 fp_mask = devc->first_partial_logic_mask;
376 if (fp_off == logic->unitsize)
377 return;
378
379 for (off = 0; off < logic->length; off += logic->unitsize) {
380 sample = logic->data + off;
381 sample[fp_off] &= fp_mask;
382 for (idx = fp_off + 1; idx < logic->unitsize; idx++)
383 sample[idx] = 0x00;
384 }
385}
386
ba508e22
UH		 387static void send_analog_packet(struct analog_gen *ag,
388 struct sr_dev_inst *sdi, uint64_t *analog_sent,
389 uint64_t analog_pos, uint64_t analog_todo)
390{
391 struct sr_datafeed_packet packet;
392 struct dev_context *devc;
a6e5d2f6 393 struct analog_pattern *pattern;
ba508e22
UH		 394 uint64_t sending_now, to_avg;
395 int ag_pattern_pos;
396 unsigned int i;
a6e5d2f6
FS		 397 float amplitude, offset, value;
398 float *data;
ba508e22 399
01f2adb0
GS		 400 if (!ag->ch || !ag->ch->enabled)
401 return;
402
ba508e22
UH		 403 devc = sdi->priv;
404 packet.type = SR_DF_ANALOG;
405 packet.payload = &ag->packet;
406
a6e5d2f6
FS		 407 pattern = devc->analog_patterns[ag->pattern];
408
94f364ec
FS		 409 ag->packet.meaning->channels = g_slist_append(NULL, ag->ch);
410 ag->packet.meaning->mq = ag->mq;
411 ag->packet.meaning->mqflags = ag->mq_flags;
412
6449b2e0 413 /* Set a unit for the given quantity. */
94f364ec
FS		 414 if (ag->mq == SR_MQ_VOLTAGE)
415 ag->packet.meaning->unit = SR_UNIT_VOLT;
416 else if (ag->mq == SR_MQ_CURRENT)
417 ag->packet.meaning->unit = SR_UNIT_AMPERE;
418 else if (ag->mq == SR_MQ_RESISTANCE)
419 ag->packet.meaning->unit = SR_UNIT_OHM;
420 else if (ag->mq == SR_MQ_CAPACITANCE)
421 ag->packet.meaning->unit = SR_UNIT_FARAD;
422 else if (ag->mq == SR_MQ_TEMPERATURE)
423 ag->packet.meaning->unit = SR_UNIT_CELSIUS;
424 else if (ag->mq == SR_MQ_FREQUENCY)
425 ag->packet.meaning->unit = SR_UNIT_HERTZ;
426 else if (ag->mq == SR_MQ_DUTY_CYCLE)
427 ag->packet.meaning->unit = SR_UNIT_PERCENTAGE;
428 else if (ag->mq == SR_MQ_CONTINUITY)
429 ag->packet.meaning->unit = SR_UNIT_OHM;
430 else if (ag->mq == SR_MQ_PULSE_WIDTH)
431 ag->packet.meaning->unit = SR_UNIT_PERCENTAGE;
432 else if (ag->mq == SR_MQ_CONDUCTANCE)
433 ag->packet.meaning->unit = SR_UNIT_SIEMENS;
434 else if (ag->mq == SR_MQ_POWER)
435 ag->packet.meaning->unit = SR_UNIT_WATT;
436 else if (ag->mq == SR_MQ_GAIN)
437 ag->packet.meaning->unit = SR_UNIT_UNITLESS;
438 else if (ag->mq == SR_MQ_SOUND_PRESSURE_LEVEL)
439 ag->packet.meaning->unit = SR_UNIT_DECIBEL_SPL;
440 else if (ag->mq == SR_MQ_CARBON_MONOXIDE)
441 ag->packet.meaning->unit = SR_UNIT_CONCENTRATION;
442 else if (ag->mq == SR_MQ_RELATIVE_HUMIDITY)
443 ag->packet.meaning->unit = SR_UNIT_HUMIDITY_293K;
444 else if (ag->mq == SR_MQ_TIME)
445 ag->packet.meaning->unit = SR_UNIT_SECOND;
446 else if (ag->mq == SR_MQ_WIND_SPEED)
447 ag->packet.meaning->unit = SR_UNIT_METER_SECOND;
448 else if (ag->mq == SR_MQ_PRESSURE)
449 ag->packet.meaning->unit = SR_UNIT_HECTOPASCAL;
450 else if (ag->mq == SR_MQ_PARALLEL_INDUCTANCE)
451 ag->packet.meaning->unit = SR_UNIT_HENRY;
452 else if (ag->mq == SR_MQ_PARALLEL_CAPACITANCE)
453 ag->packet.meaning->unit = SR_UNIT_FARAD;
454 else if (ag->mq == SR_MQ_PARALLEL_RESISTANCE)
455 ag->packet.meaning->unit = SR_UNIT_OHM;
456 else if (ag->mq == SR_MQ_SERIES_INDUCTANCE)
457 ag->packet.meaning->unit = SR_UNIT_HENRY;
458 else if (ag->mq == SR_MQ_SERIES_CAPACITANCE)
459 ag->packet.meaning->unit = SR_UNIT_FARAD;
460 else if (ag->mq == SR_MQ_SERIES_RESISTANCE)
461 ag->packet.meaning->unit = SR_UNIT_OHM;
462 else if (ag->mq == SR_MQ_DISSIPATION_FACTOR)
463 ag->packet.meaning->unit = SR_UNIT_UNITLESS;
464 else if (ag->mq == SR_MQ_QUALITY_FACTOR)
465 ag->packet.meaning->unit = SR_UNIT_UNITLESS;
466 else if (ag->mq == SR_MQ_PHASE_ANGLE)
467 ag->packet.meaning->unit = SR_UNIT_DEGREE;
468 else if (ag->mq == SR_MQ_DIFFERENCE)
469 ag->packet.meaning->unit = SR_UNIT_UNITLESS;
470 else if (ag->mq == SR_MQ_COUNT)
471 ag->packet.meaning->unit = SR_UNIT_PIECE;
472 else if (ag->mq == SR_MQ_POWER_FACTOR)
473 ag->packet.meaning->unit = SR_UNIT_UNITLESS;
474 else if (ag->mq == SR_MQ_APPARENT_POWER)
475 ag->packet.meaning->unit = SR_UNIT_VOLT_AMPERE;
476 else if (ag->mq == SR_MQ_MASS)
477 ag->packet.meaning->unit = SR_UNIT_GRAM;
478 else if (ag->mq == SR_MQ_HARMONIC_RATIO)
479 ag->packet.meaning->unit = SR_UNIT_UNITLESS;
480 else
481 ag->packet.meaning->unit = SR_UNIT_UNITLESS;
482
ba508e22 483 if (!devc->avg) {
a6e5d2f6
FS		 484 ag_pattern_pos = analog_pos % pattern->num_samples;
485 sending_now = MIN(analog_todo, pattern->num_samples - ag_pattern_pos);
486 if (ag->amplitude != DEFAULT_ANALOG_AMPLITUDE ||
487 ag->offset != DEFAULT_ANALOG_OFFSET) {
488
6449b2e0 489 /* Amplitude or offset changed, modify each sample. */
a6e5d2f6
FS		 490 amplitude = ag->amplitude / DEFAULT_ANALOG_AMPLITUDE;
491 offset = ag->offset - DEFAULT_ANALOG_OFFSET;
492 data = ag->packet.data;
6449b2e0 493 for (i = 0; i < sending_now; i++)
a6e5d2f6 494 data[i] = pattern->data[ag_pattern_pos + i] * amplitude + offset;
a6e5d2f6 495 } else {
6449b2e0 496 /* Amplitude and offset unchanged, use the fast way. */
a6e5d2f6
FS		 497 ag->packet.data = pattern->data + ag_pattern_pos;
498 }
ba508e22
UH		 499 ag->packet.num_samples = sending_now;
500 sr_session_send(sdi, &packet);
501
502 /* Whichever channel group gets there first. */
503 *analog_sent = MAX(*analog_sent, sending_now);
504 } else {
a6e5d2f6
FS		 505 ag_pattern_pos = analog_pos % pattern->num_samples;
506 to_avg = MIN(analog_todo, pattern->num_samples - ag_pattern_pos);
507 amplitude = ag->amplitude / DEFAULT_ANALOG_AMPLITUDE;
508 offset = ag->offset - DEFAULT_ANALOG_OFFSET;
ba508e22
UH		 509
510 for (i = 0; i < to_avg; i++) {
a6e5d2f6
FS		 511 value = *(pattern->data + ag_pattern_pos + i) * amplitude + offset;
512 ag->avg_val = (ag->avg_val + value) / 2;
ba508e22
UH		 513 ag->num_avgs++;
514 /* Time to send averaged data? */
d1078180 515 if ((devc->avg_samples > 0) && (ag->num_avgs >= devc->avg_samples))
ba508e22
UH		 516 goto do_send;
517 }
518
519 if (devc->avg_samples == 0) {
a6e5d2f6
FS		 520 /*
521 * We're averaging all the samples, so wait with
ba508e22
UH		 522 * sending until the very end.
523 */
524 *analog_sent = ag->num_avgs;
525 return;
526 }
527
528do_send:
529 ag->packet.data = &ag->avg_val;
530 ag->packet.num_samples = 1;
531
532 sr_session_send(sdi, &packet);
533 *analog_sent = ag->num_avgs;
534
535 ag->num_avgs = 0;
536 ag->avg_val = 0.0f;
537 }
538}
539
540/* Callback handling data */
541SR_PRIV int demo_prepare_data(int fd, int revents, void *cb_data)
542{
543 struct sr_dev_inst *sdi;
544 struct dev_context *devc;
545 struct sr_datafeed_packet packet;
546 struct sr_datafeed_logic logic;
547 struct analog_gen *ag;
548 GHashTableIter iter;
549 void *value;
550 uint64_t samples_todo, logic_done, analog_done, analog_sent, sending_now;
551 int64_t elapsed_us, limit_us, todo_us;
6fc51fb1 552 int64_t trigger_offset;
553 int pre_trigger_samples;
ba508e22
UH		 554
555 (void)fd;
556 (void)revents;
557
558 sdi = cb_data;
559 devc = sdi->priv;
560
561 /* Just in case. */
562 if (devc->cur_samplerate <= 0
563 || (devc->num_logic_channels <= 0
564 && devc->num_analog_channels <= 0)) {
d2f7c417 565 sr_dev_acquisition_stop(sdi);
ba508e22
UH		 566 return G_SOURCE_CONTINUE;
567 }
568
569 /* What time span should we send samples for? */
570 elapsed_us = g_get_monotonic_time() - devc->start_us;
571 limit_us = 1000 * devc->limit_msec;
572 if (limit_us > 0 && limit_us < elapsed_us)
573 todo_us = MAX(0, limit_us - devc->spent_us);
574 else
575 todo_us = MAX(0, elapsed_us - devc->spent_us);
576
577 /* How many samples are outstanding since the last round? */
578 samples_todo = (todo_us * devc->cur_samplerate + G_USEC_PER_SEC - 1)
579 / G_USEC_PER_SEC;
f55bea76 580
ba508e22
UH		 581 if (devc->limit_samples > 0) {
582 if (devc->limit_samples < devc->sent_samples)
583 samples_todo = 0;
584 else if (devc->limit_samples - devc->sent_samples < samples_todo)
585 samples_todo = devc->limit_samples - devc->sent_samples;
586 }
f55bea76 587
767ca135
SA		 588 if (samples_todo == 0)
589 return G_SOURCE_CONTINUE;
590
fb193945
GS		 591 if (devc->limit_frames) {
592 /* Never send more samples than a frame can fit... */
593 samples_todo = MIN(samples_todo, SAMPLES_PER_FRAME);
594 /* ...or than we need to finish the current frame. */
595 samples_todo = MIN(samples_todo,
596 SAMPLES_PER_FRAME - devc->sent_frame_samples);
597 }
767ca135 598
ba508e22
UH		 599 /* Calculate the actual time covered by this run back from the sample
600 * count, rounded towards zero. This avoids getting stuck on a too-low
601 * time delta with no samples being sent due to round-off.
602 */
603 todo_us = samples_todo * G_USEC_PER_SEC / devc->cur_samplerate;
604
405b9c10 605 logic_done = devc->num_logic_channels > 0 ? 0 : samples_todo;
1b7b72d4
GS		 606 if (!devc->enabled_logic_channels)
607 logic_done = samples_todo;
d1078180 608
ba508e22 609 analog_done = devc->num_analog_channels > 0 ? 0 : samples_todo;
1b7b72d4
GS		 610 if (!devc->enabled_analog_channels)
611 analog_done = samples_todo;
d1078180 612
ba508e22
UH		 613 while (logic_done < samples_todo || analog_done < samples_todo) {
614 /* Logic */
615 if (logic_done < samples_todo) {
616 sending_now = MIN(samples_todo - logic_done,
617 LOGIC_BUFSIZE / devc->logic_unitsize);
618 logic_generator(sdi, sending_now * devc->logic_unitsize);
d1078180
SA		 619 /* Check for trigger and send pre-trigger data if needed */
620 if (devc->stl && (!devc->trigger_fired)) {
6fc51fb1 621 trigger_offset = soft_trigger_logic_check(devc->stl,
d1078180 622 devc->logic_data, sending_now * devc->logic_unitsize,
6fc51fb1 623 &pre_trigger_samples);
d1078180 624 if (trigger_offset > -1) {
6fc51fb1 625 devc->trigger_fired = TRUE;
626 logic_done = pre_trigger_samples;
d1078180 627 }
6fc51fb1 628 } else
629 trigger_offset = 0;
630
d1078180
SA		 631 /* Send logic samples if needed */
632 packet.type = SR_DF_LOGIC;
633 packet.payload = &logic;
634 logic.unitsize = devc->logic_unitsize;
635
636 if (devc->stl) {
637 if (devc->trigger_fired && (trigger_offset < (int)sending_now)) {
638 /* Send after-trigger data */
639 logic.length = (sending_now - trigger_offset) * devc->logic_unitsize;
640 logic.data = devc->logic_data + trigger_offset * devc->logic_unitsize;
641 logic_fixup_feed(devc, &logic);
642 sr_session_send(sdi, &packet);
643 logic_done += sending_now - trigger_offset;
644 /* End acquisition */
645 sr_dbg("Triggered, stopping acquisition.");
646 sr_dev_acquisition_stop(sdi);
647 break;
648 } else {
649 /* Send nothing */
650 logic_done += sending_now;
651 }
652 } else if (!devc->stl) {
653 /* No trigger defined, send logic samples */
654 logic.length = sending_now * devc->logic_unitsize;
655 logic.data = devc->logic_data;
6fc51fb1 656 logic_fixup_feed(devc, &logic);
657 sr_session_send(sdi, &packet);
d1078180 658 logic_done += sending_now;
6fc51fb1 659 }
ba508e22
UH		 660 }
661
662 /* Analog, one channel at a time */
d1078180 663 if (analog_done < samples_todo) {
ba508e22
UH		 664 analog_sent = 0;
665
666 g_hash_table_iter_init(&iter, devc->ch_ag);
667 while (g_hash_table_iter_next(&iter, NULL, &value)) {
668 send_analog_packet(value, sdi, &analog_sent,
669 devc->sent_samples + analog_done,
670 samples_todo - analog_done);
671 }
672 analog_done += analog_sent;
673 }
674 }
6fc51fb1 675
676 uint64_t min = MIN(logic_done, analog_done);
677 devc->sent_samples += min;
678 devc->sent_frame_samples += min;
ba508e22
UH		 679 devc->spent_us += todo_us;
680
fb193945 681 if (devc->limit_frames && devc->sent_frame_samples >= SAMPLES_PER_FRAME) {
767ca135
SA		 682 std_session_send_frame_end(sdi);
683 devc->sent_frame_samples = 0;
fb193945
GS		 684 devc->limit_frames--;
685 if (!devc->limit_frames) {
686 sr_dbg("Requested number of frames reached.");
687 sr_dev_acquisition_stop(sdi);
688 }
767ca135 689 }
767ca135 690
ba508e22
UH		 691 if ((devc->limit_samples > 0 && devc->sent_samples >= devc->limit_samples)
692 || (limit_us > 0 && devc->spent_us >= limit_us)) {
693
694 /* If we're averaging everything - now is the time to send data */
d1144645 695 if (devc->avg && devc->avg_samples == 0) {
ba508e22
UH		 696 g_hash_table_iter_init(&iter, devc->ch_ag);
697 while (g_hash_table_iter_next(&iter, NULL, &value)) {
698 ag = value;
699 packet.type = SR_DF_ANALOG;
700 packet.payload = &ag->packet;
701 ag->packet.data = &ag->avg_val;
702 ag->packet.num_samples = 1;
703 sr_session_send(sdi, &packet);
704 }
705 }
706 sr_dbg("Requested number of samples reached.");
d2f7c417 707 sr_dev_acquisition_stop(sdi);
fb193945 708 } else if (devc->limit_frames) {
767ca135 709 if (devc->sent_frame_samples == 0)
f55bea76 710 std_session_send_frame_begin(sdi);
ba508e22
UH		 711 }
712
713 return G_SOURCE_CONTINUE;
714}
Hardware access and backend lib