+++ /dev/null
-/*
- * This file is part of the sigrok project.
- *
- * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.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 3 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_SIGROK_H
-#define LIBSIGROK_SIGROK_H
-
-#include <stdio.h>
-#include <sys/time.h>
-#include <stdint.h>
-#include <inttypes.h>
-#include <glib.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/**
- * @file
- *
- * The public libsigrok header file to be used by frontends.
- */
-
-/*
- * All possible return codes of libsigrok functions must be listed here.
- * Functions should never return hardcoded numbers as status, but rather
- * use these enum values. All error codes are negative numbers.
- *
- * The error codes are globally unique in libsigrok, i.e. if one of the
- * libsigrok functions returns a "malloc error" it must be exactly the same
- * return value as used by all other functions to indicate "malloc error".
- * There must be no functions which indicate two different errors via the
- * same return code.
- *
- * Also, for compatibility reasons, no defined return codes are ever removed
- * or reused for different errors later. You can only add new entries and
- * return codes, but never remove or redefine existing ones.
- */
-
-/** Status/error codes returned by libsigrok functions. */
-enum {
- SR_OK = 0, /**< No error. */
- SR_ERR = -1, /**< Generic/unspecified error. */
- SR_ERR_MALLOC = -2, /**< Malloc/calloc/realloc error. */
- SR_ERR_ARG = -3, /**< Function argument error. */
- SR_ERR_BUG = -4, /**< Errors hinting at internal bugs. */
- SR_ERR_SAMPLERATE = -5, /**< Incorrect samplerate. */
-};
-
-#define SR_MAX_NUM_PROBES 64 /* Limited by uint64_t. */
-#define SR_MAX_PROBENAME_LEN 32
-
-/* Handy little macros */
-#define SR_HZ(n) (n)
-#define SR_KHZ(n) ((n) * 1000)
-#define SR_MHZ(n) ((n) * 1000000)
-#define SR_GHZ(n) ((n) * 1000000000)
-
-#define SR_HZ_TO_NS(n) (1000000000 / (n))
-
-/** libsigrok loglevels. */
-enum {
- SR_LOG_NONE = 0, /**< Output no messages at all. */
- SR_LOG_ERR = 1, /**< Output error messages. */
- SR_LOG_WARN = 2, /**< Output warnings. */
- SR_LOG_INFO = 3, /**< Output informational messages. */
- SR_LOG_DBG = 4, /**< Output debug messages. */
- SR_LOG_SPEW = 5, /**< Output very noisy debug messages. */
-};
-
-/*
- * Use SR_API to mark public API symbols, and SR_PRIV for private symbols.
- *
- * Variables and functions marked 'static' are private already and don't
- * need SR_PRIV. However, functions which are not static (because they need
- * to be used in other libsigrok-internal files) but are also not meant to
- * be part of the public libsigrok API, must use SR_PRIV.
- *
- * This uses the 'visibility' feature of gcc (requires gcc >= 4.0).
- *
- * This feature is not available on MinGW/Windows, as it is a feature of
- * ELF files and MinGW/Windows uses PE files.
- *
- * Details: http://gcc.gnu.org/wiki/Visibility
- */
-
-/* Marks public libsigrok API symbols. */
-#ifndef _WIN32
-#define SR_API __attribute__((visibility("default")))
-#else
-#define SR_API
-#endif
-
-/* Marks private, non-public libsigrok symbols (not part of the API). */
-#ifndef _WIN32
-#define SR_PRIV __attribute__((visibility("hidden")))
-#else
-#define SR_PRIV
-#endif
-
-typedef int (*sr_receive_data_callback_t)(int fd, int revents, void *cb_data);
-
-/** Data types used by hardware drivers for dev_config_set(). */
-enum {
- SR_T_UINT64,
- SR_T_CHAR,
- SR_T_BOOL,
- SR_T_FLOAT,
- SR_T_RATIONAL_PERIOD,
- SR_T_RATIONAL_VOLT,
- SR_T_KEYVALUE,
-};
-
-/** Rational number data type, containing numerator and denominator values. */
-struct sr_rational {
- /** Numerator of the rational number. */
- uint64_t p;
- /** Denominator of the rational number. */
- uint64_t q;
-};
-
-/** Value for sr_datafeed_packet.type. */
-enum {
- SR_DF_HEADER,
- SR_DF_END,
- SR_DF_TRIGGER,
- SR_DF_LOGIC,
- SR_DF_META_LOGIC,
- SR_DF_ANALOG,
- SR_DF_META_ANALOG,
- SR_DF_FRAME_BEGIN,
- SR_DF_FRAME_END,
-};
-
-/** Values for sr_datafeed_analog.mq. */
-enum {
- SR_MQ_VOLTAGE,
- SR_MQ_CURRENT,
- SR_MQ_RESISTANCE,
- SR_MQ_CAPACITANCE,
- SR_MQ_TEMPERATURE,
- SR_MQ_FREQUENCY,
- SR_MQ_DUTY_CYCLE,
- SR_MQ_CONTINUITY,
- SR_MQ_PULSE_WIDTH,
- SR_MQ_CONDUCTANCE,
- /** Electrical power, usually in W, or dBm. */
- SR_MQ_POWER,
- /** Gain (e.g. a transistor's gain, or hFE). */
- SR_MQ_GAIN,
-};
-
-/** Values for sr_datafeed_analog.unit. */
-enum {
- SR_UNIT_VOLT,
- SR_UNIT_AMPERE,
- SR_UNIT_OHM,
- SR_UNIT_FARAD,
- SR_UNIT_KELVIN,
- SR_UNIT_CELSIUS,
- SR_UNIT_FAHRENHEIT,
- SR_UNIT_HERTZ,
- SR_UNIT_PERCENTAGE,
- SR_UNIT_BOOLEAN,
- SR_UNIT_SECOND,
- /** Unit of conductance, the inverse of resistance. */
- SR_UNIT_SIEMENS,
- /**
- * An absolute measurement of power, in decibels, referenced to
- * 1 milliwatt (dBu).
- */
- SR_UNIT_DECIBEL_MW,
- /** Voltage in decibel, referenced to 1 volt (dBV). */
- SR_UNIT_DECIBEL_VOLT,
- /**
- * Measurements that intrinsically do not have units attached, such
- * as ratios, gains, etc. Specifically, a transistor's gain (hFE) is
- * a unitless quantity, for example.
- */
- SR_UNIT_UNITLESS,
-};
-
-/** Values for sr_datafeed_analog.flags. */
-enum {
- /** Voltage measurement is alternating current (AC). */
- SR_MQFLAG_AC = 0x01,
- /** Voltage measurement is direct current (DC). */
- SR_MQFLAG_DC = 0x02,
- /** This is a true RMS measurement. */
- SR_MQFLAG_RMS = 0x04,
- /** Value is voltage drop across a diode, or NAN. */
- SR_MQFLAG_DIODE = 0x08,
- /** Device is in "hold" mode, i.e. repeating the last measurement. */
- SR_MQFLAG_HOLD = 0x10,
- /** Device is in "max" mode, only updating upon a new max value. */
- SR_MQFLAG_MAX = 0x20,
- /** Device is in "min" mode, only updating upon a new min value. */
- SR_MQFLAG_MIN = 0x40,
- /** Device is in autoranging mode. */
- SR_MQFLAG_AUTORANGE = 0x80,
- /** Device is in relative mode. */
- SR_MQFLAG_RELATIVE = 0x100,
-};
-
-struct sr_context;
-
-struct sr_datafeed_packet {
- uint16_t type;
- void *payload;
-};
-
-struct sr_datafeed_header {
- int feed_version;
- struct timeval starttime;
-};
-
-struct sr_datafeed_meta_logic {
- int num_probes;
- uint64_t samplerate;
-};
-
-struct sr_datafeed_logic {
- uint64_t length;
- uint16_t unitsize;
- void *data;
-};
-
-struct sr_datafeed_meta_analog {
- int num_probes;
-};
-
-struct sr_datafeed_analog {
- int num_samples;
- /** Measured quantity (e.g. voltage, current, temperature). */
- int mq;
- /** Unit in which the MQ is measured. */
- int unit;
- /** Bitmap with extra information about the MQ. */
- uint64_t mqflags;
- /** The analog value. */
- float *data;
-};
-
-struct sr_input {
- struct sr_input_format *format;
- GHashTable *param;
- struct sr_dev_inst *sdi;
- void *internal;
-};
-
-struct sr_input_format {
- char *id;
- char *description;
- int (*format_match) (const char *filename);
- int (*init) (struct sr_input *in);
- int (*loadfile) (struct sr_input *in, const char *filename);
-};
-
-struct sr_output {
- struct sr_output_format *format;
- struct sr_dev_inst *sdi;
- char *param;
- void *internal;
-};
-
-struct sr_output_format {
- char *id;
- char *description;
- int df_type;
- int (*init) (struct sr_output *o);
- int (*data) (struct sr_output *o, const uint8_t *data_in,
- uint64_t length_in, uint8_t **data_out,
- uint64_t *length_out);
- int (*event) (struct sr_output *o, int event_type, uint8_t **data_out,
- uint64_t *length_out);
- GString *(*recv) (struct sr_output *o, const struct sr_dev_inst *sdi,
- struct sr_datafeed_packet *packet);
- int (*cleanup) (struct sr_output *o);
-};
-
-struct sr_datastore {
- /** Size in bytes of the number of units stored in this datastore. */
- int ds_unitsize;
- unsigned int num_units; /* TODO: uint64_t */
- GSList *chunklist;
-};
-
-/*
- * This represents a generic device connected to the system.
- * For device-specific information, ask the driver. The driver_index refers
- * to the device index within that driver; it may be handling more than one
- * device. All relevant driver calls take a dev_index parameter for this.
- */
-struct sr_dev {
- /** Which driver handles this device. */
- struct sr_dev_driver *driver;
- /** A driver may handle multiple devices of the same type. */
- int driver_index;
- /** List of struct sr_probe pointers. */
- GSList *probes;
- /** Data acquired by this device, if any. */
- struct sr_datastore *datastore;
-};
-
-enum {
- SR_PROBE_LOGIC,
- SR_PROBE_ANALOG,
-};
-
-struct sr_probe {
- int index;
- int type;
- gboolean enabled;
- char *name;
- char *trigger;
-};
-
-struct sr_hwopt {
- int hwopt;
- const void *value;
-};
-
-/** Hardware driver options. */
-enum {
- /** Used to terminate lists. Must be 0! */
- SR_HWOPT_DUMMY = 0,
-
- /**
- * Some drivers cannot detect the exact model they're talking to
- * (may be phased out).
- */
- SR_HWOPT_MODEL,
-
- /**
- * Specification on how to connect to a device. In combination
- * with SR_HWOPT_SERIALCOMM, this is a serial port in the form
- * which makes sense to the operating system (e.g., /dev/ttyS0).
- * Otherwise this specifies a USB device, either in the form of
- * [bus].[address] (decimal, e.g. 1.65) or [vendorid].[productid]
- * (hexadecimal, e.g. 1d6b.0001).
- */
- SR_HWOPT_CONN,
-
- /**
- * Serial communication specification, in the form:
- * [baudrate]/[databits][parity][stopbits], e.g. 9600/8n1
- *
- * This is always an optional parameter, since a driver typically
- * knows the speed at which the device wants to communicate.
- */
- SR_HWOPT_SERIALCOMM,
-};
-
-/** Hardware device capabilities. */
-enum {
- /** Used to terminate lists. Must be 0! */
- SR_HWCAP_DUMMY = 0,
-
- /*--- Device classes ------------------------------------------------*/
-
- /** The device can act as logic analyzer. */
- SR_HWCAP_LOGIC_ANALYZER,
-
- /** The device can act as an oscilloscope. */
- SR_HWCAP_OSCILLOSCOPE,
-
- /** The device can act as a multimeter. */
- SR_HWCAP_MULTIMETER,
-
- /** The device is a demo device. */
- SR_HWCAP_DEMO_DEV,
-
-
- /*--- Device configuration ------------------------------------------*/
-
- /** The device supports setting/changing its samplerate. */
- SR_HWCAP_SAMPLERATE,
-
- /** The device supports setting a pre/post-trigger capture ratio. */
- SR_HWCAP_CAPTURE_RATIO,
-
- /* TODO? */
- /** The device supports setting a pattern (pattern generator mode). */
- SR_HWCAP_PATTERN_MODE,
-
- /** The device supports Run Length Encoding. */
- SR_HWCAP_RLE,
-
- /** The device supports setting trigger slope. */
- SR_HWCAP_TRIGGER_SLOPE,
-
- /** Trigger source. */
- SR_HWCAP_TRIGGER_SOURCE,
-
- /** Horizontal trigger position. */
- SR_HWCAP_HORIZ_TRIGGERPOS,
-
- /** Buffer size. */
- SR_HWCAP_BUFFERSIZE,
-
- /** Time base. */
- SR_HWCAP_TIMEBASE,
-
- /** Filter. */
- SR_HWCAP_FILTER,
-
- /** Volts/div. */
- SR_HWCAP_VDIV,
-
- /** Coupling. */
- SR_HWCAP_COUPLING,
-
-
- /*--- Special stuff -------------------------------------------------*/
-
- /** Session filename. */
- SR_HWCAP_SESSIONFILE,
-
- /* TODO: Better description. */
- /** The device supports specifying a capturefile to inject. */
- SR_HWCAP_CAPTUREFILE,
-
- /* TODO: Better description. */
- /** The device supports specifying the capturefile unit size. */
- SR_HWCAP_CAPTURE_UNITSIZE,
-
- /* TODO: Better description. */
- /** The device supports setting the number of probes. */
- SR_HWCAP_CAPTURE_NUM_PROBES,
-
-
- /*--- Acquisition modes ---------------------------------------------*/
-
- /**
- * The device supports setting a sample time limit, i.e. how long the
- * sample acquisition should run (in ms).
- */
- SR_HWCAP_LIMIT_MSEC,
-
- /**
- * The device supports setting a sample number limit, i.e. how many
- * samples should be acquired.
- */
- SR_HWCAP_LIMIT_SAMPLES,
-
- /**
- * The device supports setting a frame limit, i.e. how many
- * frames should be acquired.
- */
- SR_HWCAP_LIMIT_FRAMES,
-
- /**
- * The device supports continuous sampling, i.e. neither a time limit
- * nor a sample number limit has to be supplied, it will just acquire
- * samples continuously, until explicitly stopped by a certain command.
- */
- SR_HWCAP_CONTINUOUS,
-
-};
-
-struct sr_hwcap_option {
- int hwcap;
- int type;
- char *description;
- char *shortname;
-};
-
-struct sr_dev_inst {
- struct sr_dev_driver *driver;
- int index;
- int status;
- int inst_type;
- char *vendor;
- char *model;
- char *version;
- GSList *probes;
- void *priv;
-};
-
-/** Types of device instances (sr_dev_inst). */
-enum {
- /** Device instance type for USB devices. */
- SR_INST_USB,
- /** Device instance type for serial port devices. */
- SR_INST_SERIAL,
-};
-
-/** Device instance status. */
-enum {
- /** The device instance was not found. */
- SR_ST_NOT_FOUND,
- /** The device instance was found, but is still booting. */
- SR_ST_INITIALIZING,
- /** The device instance is live, but not in use. */
- SR_ST_INACTIVE,
- /** The device instance is actively in use in a session. */
- SR_ST_ACTIVE,
-};
-
-/*
- * TODO: This sucks, you just kinda have to "know" the returned type.
- * TODO: Need a DI to return the number of trigger stages supported.
- */
-
-/** Device info IDs. */
-enum {
- /** A list of options supported by the driver. */
- SR_DI_HWOPTS,
- /** A list of capabilities supported by the device. */
- SR_DI_HWCAPS,
- /** The number of probes connected to this device. */
- SR_DI_NUM_PROBES,
- /** The probe names on this device. */
- SR_DI_PROBE_NAMES,
- /** Samplerates supported by this device (struct sr_samplerates). */
- SR_DI_SAMPLERATES,
- /** Types of logic trigger supported, out of "01crf" (char *). */
- SR_DI_TRIGGER_TYPES,
- /** The currently set samplerate in Hz (uint64_t). */
- SR_DI_CUR_SAMPLERATE,
- /** Supported patterns (in pattern generator mode). */
- SR_DI_PATTERNS,
- /** Supported buffer sizes. */
- SR_DI_BUFFERSIZES,
- /** Supported time bases. */
- SR_DI_TIMEBASES,
- /** Supported trigger sources. */
- SR_DI_TRIGGER_SOURCES,
- /** Supported filter targets. */
- SR_DI_FILTERS,
- /** Valid volts/div values. */
- SR_DI_VDIVS,
- /** Coupling options. */
- SR_DI_COUPLING,
-};
-
-/*
- * A device supports either a range of samplerates with steps of a given
- * granularity, or is limited to a set of defined samplerates. Use either
- * step or list, but not both.
- */
-struct sr_samplerates {
- uint64_t low;
- uint64_t high;
- uint64_t step;
- const uint64_t *list;
-};
-
-struct sr_dev_driver {
- /* Driver-specific */
- char *name;
- char *longname;
- int api_version;
- int (*init) (void);
- int (*cleanup) (void);
- GSList *(*scan) (GSList *options);
- GSList *(*dev_list) (void);
- int (*dev_clear) (void);
-
- /* Device-specific */
- int (*dev_open) (struct sr_dev_inst *sdi);
- int (*dev_close) (struct sr_dev_inst *sdi);
- int (*info_get) (int info_id, const void **data,
- const struct sr_dev_inst *sdi);
- int (*dev_config_set) (const struct sr_dev_inst *sdi, int hwcap,
- const void *value);
- int (*dev_acquisition_start) (const struct sr_dev_inst *sdi,
- void *cb_data);
- int (*dev_acquisition_stop) (const struct sr_dev_inst *sdi,
- void *cb_data);
-
- /* Dynamic */
- void *priv;
-};
-
-struct sr_session {
- /** List of struct sr_dev pointers. */
- GSList *devs;
- /** List of sr_receive_data_callback_t items. */
- GSList *datafeed_callbacks;
- GTimeVal starttime;
-
- unsigned int num_sources;
-
- /*
- * Both "sources" and "pollfds" are of the same size and contain pairs
- * of descriptor and callback function. We can not embed the GPollFD
- * into the source struct since we want to be able to pass the array
- * of all poll descriptors to g_poll().
- */
- struct source *sources;
- GPollFD *pollfds;
- int source_timeout;
-};
-
-#include "proto.h"
-#include "version.h"
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
projects / libsigrok.git / blobdiff