120 lines
3.2 KiB
C
120 lines
3.2 KiB
C
/*
|
|
* This file is part of the libsigrok project.
|
|
*
|
|
* Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
|
|
* Copyright (C) 2011 Olivier Fauchon <olivier@aixmarseille.com>
|
|
* Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
|
|
* Copyright (C) 2015 Bartosz Golaszewski <bgolaszewski@baylibre.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef LIBSIGROK_HARDWARE_DEMO_PROTOCOL_H
|
|
#define LIBSIGROK_HARDWARE_DEMO_PROTOCOL_H
|
|
|
|
#include <stdint.h>
|
|
#include <libsigrok/libsigrok.h>
|
|
#include "libsigrok-internal.h"
|
|
|
|
#define LOG_PREFIX "demo"
|
|
|
|
/* The size in bytes of chunks to send through the session bus. */
|
|
#define LOGIC_BUFSIZE 4096
|
|
/* Size of the analog pattern space per channel. */
|
|
#define ANALOG_BUFSIZE 4096
|
|
|
|
/* Private, per-device-instance driver context. */
|
|
struct dev_context {
|
|
uint64_t cur_samplerate;
|
|
uint64_t limit_samples;
|
|
uint64_t limit_msec;
|
|
uint64_t sent_samples;
|
|
int64_t start_us;
|
|
int64_t spent_us;
|
|
uint64_t step;
|
|
/* Logic */
|
|
int32_t num_logic_channels;
|
|
unsigned int logic_unitsize;
|
|
/* There is only ever one logic channel group, so its pattern goes here. */
|
|
uint8_t logic_pattern;
|
|
unsigned char logic_data[LOGIC_BUFSIZE];
|
|
/* Analog */
|
|
int32_t num_analog_channels;
|
|
GHashTable *ch_ag;
|
|
gboolean avg; /* True if averaging is enabled */
|
|
uint64_t avg_samples;
|
|
};
|
|
|
|
/* Logic patterns we can generate. */
|
|
enum {
|
|
/**
|
|
* Spells "sigrok" across 8 channels using '0's (with '1's as
|
|
* "background") when displayed using the 'bits' output format.
|
|
* The pattern is repeated every 8 channels, shifted to the right
|
|
* in time by one bit.
|
|
*/
|
|
PATTERN_SIGROK,
|
|
|
|
/** Pseudo-random values on all channels. */
|
|
PATTERN_RANDOM,
|
|
|
|
/**
|
|
* Incrementing number across 8 channels. The pattern is repeated
|
|
* every 8 channels, shifted to the right in time by one bit.
|
|
*/
|
|
PATTERN_INC,
|
|
|
|
/** All channels have a low logic state. */
|
|
PATTERN_ALL_LOW,
|
|
|
|
/** All channels have a high logic state. */
|
|
PATTERN_ALL_HIGH,
|
|
};
|
|
|
|
/* Analog patterns we can generate. */
|
|
enum {
|
|
/**
|
|
* Square wave.
|
|
*/
|
|
PATTERN_SQUARE,
|
|
PATTERN_SINE,
|
|
PATTERN_TRIANGLE,
|
|
PATTERN_SAWTOOTH,
|
|
};
|
|
|
|
static const char *analog_pattern_str[] = {
|
|
"square",
|
|
"sine",
|
|
"triangle",
|
|
"sawtooth",
|
|
};
|
|
|
|
struct analog_gen {
|
|
int pattern;
|
|
float amplitude;
|
|
float pattern_data[ANALOG_BUFSIZE];
|
|
unsigned int num_samples;
|
|
struct sr_datafeed_analog packet;
|
|
struct sr_analog_encoding encoding;
|
|
struct sr_analog_meaning meaning;
|
|
struct sr_analog_spec spec;
|
|
float avg_val; /* Average value */
|
|
unsigned num_avgs; /* Number of samples averaged */
|
|
};
|
|
|
|
SR_PRIV void demo_generate_analog_pattern(struct analog_gen *ag, uint64_t sample_rate);
|
|
SR_PRIV int demo_prepare_data(int fd, int revents, void *cb_data);
|
|
|
|
#endif
|