165 lines
4.6 KiB
C
165 lines
4.6 KiB
C
/*
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* This file is part of the libsigrok project.
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*
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* Copyright (C) 2018 mhooijboer <marchelh@gmail.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef LIBSIGROK_HARDWARE_SIGLENT_SDS_PROTOCOL_H
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#define LIBSIGROK_HARDWARE_SIGLENT_SDS_PROTOCOL_H
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#include <stdbool.h>
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#include <stdint.h>
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#include <glib.h>
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#include <libsigrok/libsigrok.h>
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#include "libsigrok-internal.h"
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#define LOG_PREFIX "siglent-sds"
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/* Size of acquisition buffers */
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//#define ACQ_BUFFER_SIZE (6000000)
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#define ACQ_BUFFER_SIZE (18000000)
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/* Maximum number of samples to retrieve at once. */
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#define ACQ_BLOCK_SIZE (30 * 1000)
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#define MAX_ANALOG_CHANNELS 4
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#define MAX_DIGITAL_CHANNELS 16
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#define DEVICE_STATE_STOPPED 0 /* Scope is in stopped state */
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#define DEVICE_STATE_DATA_ACQ 1 /* A new signal has been acquired */
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#define DEVICE_STATE_TRIG_RDY 8192 /* Trigger is ready */
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enum protocol_version {
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SPO_MODEL,
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NON_SPO_MODEL,
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};
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enum data_format {
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FORMAT_IEEE488_2,
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};
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enum data_source {
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DATA_SOURCE_SCREEN,
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DATA_SOURCE_HISTORY,
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};
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struct siglent_sds_vendor {
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const char *name;
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const char *full_name;
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const char *usb_name;
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};
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struct siglent_sds_series {
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const struct siglent_sds_vendor *vendor;
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const char *name;
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enum protocol_version protocol;
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uint64_t max_timebase[2];
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uint64_t min_vdiv[2];
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int num_horizontal_divs;
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int num_vertical_divs;
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int buffer_samples;
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};
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struct siglent_sds_model {
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const struct siglent_sds_series *series;
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const char *name;
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uint64_t min_timebase[2];
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unsigned int analog_channels;
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bool has_digital;
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unsigned int digital_channels;
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};
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enum wait_events {
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WAIT_NONE, /* Don't wait */
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WAIT_TRIGGER, /* Wait for trigger */
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WAIT_BLOCK, /* Wait for block data (only when reading sample mem) */
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WAIT_STOP, /* Wait for scope stopping (only single shots) */
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};
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/** Private, per-device-instance driver context. */
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struct dev_context {
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/* Device model */
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const struct siglent_sds_model *model;
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/* Device properties */
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const uint64_t (*timebases)[2];
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uint64_t num_timebases;
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const uint64_t (*vdivs)[2];
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uint64_t num_vdivs;
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/* Channel groups */
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struct sr_channel_group **analog_groups;
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struct sr_channel_group *digital_group;
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/* Acquisition settings */
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GSList *enabled_channels;
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uint64_t limit_frames;
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enum data_source data_source;
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uint64_t analog_frame_size;
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uint64_t digital_frame_size;
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uint64_t num_samples;
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long blockHeaderSize;
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float sampleRate;
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/* Device settings */
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gboolean analog_channels[MAX_ANALOG_CHANNELS];
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gboolean digital_channels[MAX_DIGITAL_CHANNELS];
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gboolean la_enabled;
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float timebase;
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float attenuation[MAX_ANALOG_CHANNELS];
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float vdiv[MAX_ANALOG_CHANNELS];
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int vert_reference[MAX_ANALOG_CHANNELS];
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float vert_offset[MAX_ANALOG_CHANNELS];
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char *trigger_source;
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float horiz_triggerpos;
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char *trigger_slope;
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float trigger_level;
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char *coupling[MAX_ANALOG_CHANNELS];
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/* Operational state */
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/* Number of frames received in total. */
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uint64_t num_frames;
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/* GSList entry for the current channel. */
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GSList *channel_entry;
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/* Number of bytes received for current channel. */
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uint64_t num_channel_bytes;
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/* Number of bytes of block header read */
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uint64_t num_header_bytes;
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/* Number of bytes in current data block, if 0 block header expected */
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uint64_t num_block_bytes;
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/* Number of data block bytes already read */
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uint64_t num_block_read;
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/* What to wait for in *_receive */
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enum wait_events wait_event;
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/* Trigger/block copying/stop waiting status */
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int wait_status;
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/* Acq buffers used for reading from the scope and sending data to app */
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unsigned char *buffer;
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float *data;
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};
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SR_PRIV int siglent_sds_config_set(const struct sr_dev_inst *sdi,
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const char *format, ...);
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SR_PRIV int siglent_sds_capture_start(const struct sr_dev_inst *sdi);
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SR_PRIV int siglent_sds_channel_start(const struct sr_dev_inst *sdi);
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SR_PRIV int siglent_sds_receive(int fd, int revents, void *cb_data);
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SR_PRIV int siglent_sds_get_dev_cfg(const struct sr_dev_inst *sdi);
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SR_PRIV int siglent_sds_get_dev_cfg_vertical(const struct sr_dev_inst *sdi);
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SR_PRIV int siglent_sds_get_dev_cfg_horizontal(const struct sr_dev_inst *sdi);
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#endif
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