projects / libsigrok.git / blame
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|---|---|---|
| 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> | |
| 8 | * | |
| 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. | |
| 13 | * | |
| 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. | |
| 18 | * | |
| 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 | |
| 22 | */ | |
| 23 | ||
| 24 | #ifndef LIBSIGROK_HARDWARE_DEMO_PROTOCOL_H | |
| 25 | #define LIBSIGROK_HARDWARE_DEMO_PROTOCOL_H | |
| 26 | ||
| 27 | #include <stdint.h> | |
| 28 | #include <libsigrok/libsigrok.h> | |
| 29 | #include "libsigrok-internal.h" | |
| 30 | ||
| 31 | #define LOG_PREFIX "demo" | |
| 32 | ||
| 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 | |
| 37 | ||
| 38 | /* Private, per-device-instance driver context. */ | |
| 39 | struct dev_context { | |
| 40 | uint64_t cur_samplerate; | |
| 41 | uint64_t limit_samples; | |
| 42 | uint64_t limit_msec; | |
| 43 | uint64_t sent_samples; | |
| 44 | int64_t start_us; | |
| 45 | int64_t spent_us; | |
| 46 | uint64_t step; | |
| 47 | /* Logic */ | |
| 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]; | |
| 53 | /* Analog */ | |
| 54 | int32_t num_analog_channels; | |
| 55 | GHashTable *ch_ag; | |
| 56 | gboolean avg; /* True if averaging is enabled */ | |
| 57 | uint64_t avg_samples; | |
| 58 | }; | |
| 59 | ||
| 60 | /* Logic patterns we can generate. */ | |
| 61 | enum { | |
| 62 | /** | |
| 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 | |
| 66 | * in time by one bit. | |
| 67 | */ | |
| 68 | PATTERN_SIGROK, | |
| 69 | ||
| 70 | /** Pseudo-random values on all channels. */ | |
| 71 | PATTERN_RANDOM, | |
| 72 | ||
| 73 | /** | |
| 74 | * Incrementing number across 8 channels. The pattern is repeated | |
| 75 | * every 8 channels, shifted to the right in time by one bit. | |
| 76 | */ | |
| 77 | PATTERN_INC, | |
| 78 | ||
| 79 | /** All channels have a low logic state. */ | |
| 80 | PATTERN_ALL_LOW, | |
| 81 | ||
| 82 | /** All channels have a high logic state. */ | |
| 83 | PATTERN_ALL_HIGH, | |
| 84 | }; | |
| 85 | ||
| 86 | /* Analog patterns we can generate. */ | |
| 87 | enum { | |
| 88 | /** | |
| 89 | * Square wave. | |
| 90 | */ | |
| 91 | PATTERN_SQUARE, | |
| 92 | PATTERN_SINE, | |
| 93 | PATTERN_TRIANGLE, | |
| 94 | PATTERN_SAWTOOTH, | |
| 95 | }; | |
| 96 | ||
| 97 | static const char *analog_pattern_str[] = { | |
| 98 | "square", | |
| 99 | "sine", | |
| 100 | "triangle", | |
| 101 | "sawtooth", | |
| 102 | }; | |
| 103 | ||
| 104 | struct analog_gen { | |
| 105 | int pattern; | |
| 106 | float amplitude; | |
| 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 */ | |
| 115 | }; | |
| 116 | ||
| 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); | |
| 119 | ||
| 120 | #endif |