2 * This file is part of the libsigrok project.
4 * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 #ifndef LIBSIGROK_LIBSIGROK_H
21 #define LIBSIGROK_LIBSIGROK_H
36 * The public libsigrok header file to be used by frontends.
38 * This is the only file that libsigrok users (frontends) are supposed to
39 * use and \#include. There are other header files which get installed with
40 * libsigrok, but those are not meant to be used directly by frontends.
42 * The correct way to get/use the libsigrok API functions is:
45 * #include <libsigrok/libsigrok.h>
50 * All possible return codes of libsigrok functions must be listed here.
51 * Functions should never return hardcoded numbers as status, but rather
52 * use these enum values. All error codes are negative numbers.
54 * The error codes are globally unique in libsigrok, i.e. if one of the
55 * libsigrok functions returns a "malloc error" it must be exactly the same
56 * return value as used by all other functions to indicate "malloc error".
57 * There must be no functions which indicate two different errors via the
60 * Also, for compatibility reasons, no defined return codes are ever removed
61 * or reused for different errors later. You can only add new entries and
62 * return codes, but never remove or redefine existing ones.
65 /** Status/error codes returned by libsigrok functions. */
67 SR_OK_CONTINUE = 1, /**< Keep going. */
68 SR_OK = 0, /**< No error. */
69 SR_ERR = -1, /**< Generic/unspecified error. */
70 SR_ERR_MALLOC = -2, /**< Malloc/calloc/realloc error. */
71 SR_ERR_ARG = -3, /**< Function argument error. */
72 SR_ERR_BUG = -4, /**< Errors hinting at internal bugs. */
73 SR_ERR_SAMPLERATE = -5, /**< Incorrect samplerate. */
74 SR_ERR_NA = -6, /**< Not applicable. */
75 SR_ERR_DEV_CLOSED = -7, /**< Device is closed, but must be open. */
76 SR_ERR_TIMEOUT = -8, /**< A timeout occurred. */
77 SR_ERR_CHANNEL_GROUP = -9, /**< A channel group must be specified. */
78 SR_ERR_DATA =-10, /**< Data is invalid. */
79 SR_ERR_IO =-11, /**< Input/output error. */
82 * Note: When adding entries here, don't forget to also update the
83 * sr_strerror() and sr_strerror_name() functions in error.c.
87 #define SR_MAX_CHANNELNAME_LEN 32
89 /* Handy little macros */
91 #define SR_KHZ(n) ((n) * (uint64_t)(1000ULL))
92 #define SR_MHZ(n) ((n) * (uint64_t)(1000000ULL))
93 #define SR_GHZ(n) ((n) * (uint64_t)(1000000000ULL))
95 #define SR_HZ_TO_NS(n) ((uint64_t)(1000000000ULL) / (n))
97 /** libsigrok loglevels. */
99 SR_LOG_NONE = 0, /**< Output no messages at all. */
100 SR_LOG_ERR = 1, /**< Output error messages. */
101 SR_LOG_WARN = 2, /**< Output warnings. */
102 SR_LOG_INFO = 3, /**< Output informational messages. */
103 SR_LOG_DBG = 4, /**< Output debug messages. */
104 SR_LOG_SPEW = 5, /**< Output very noisy debug messages. */
108 * Use SR_API to mark public API symbols, and SR_PRIV for private symbols.
110 * Variables and functions marked 'static' are private already and don't
111 * need SR_PRIV. However, functions which are not static (because they need
112 * to be used in other libsigrok-internal files) but are also not meant to
113 * be part of the public libsigrok API, must use SR_PRIV.
115 * This uses the 'visibility' feature of gcc (requires gcc >= 4.0).
117 * This feature is not available on MinGW/Windows, as it is a feature of
118 * ELF files and MinGW/Windows uses PE files.
120 * Details: http://gcc.gnu.org/wiki/Visibility
123 /* Marks public libsigrok API symbols. */
125 #define SR_API __attribute__((visibility("default")))
130 /* Marks private, non-public libsigrok symbols (not part of the API). */
132 #define SR_PRIV __attribute__((visibility("hidden")))
137 /** Type definition for callback function for data reception. */
138 typedef int (*sr_receive_data_callback)(int fd, int revents, void *cb_data);
140 /** Data types used by sr_config_info(). */
146 SR_T_RATIONAL_PERIOD,
155 /** Value for sr_datafeed_packet.type. */
157 /** Payload is sr_datafeed_header. */
158 SR_DF_HEADER = 10000,
159 /** End of stream (no further data). */
161 /** Payload is struct sr_datafeed_meta */
163 /** The trigger matched at this point in the data feed. No payload. */
165 /** Payload is struct sr_datafeed_logic. */
167 /** Payload is struct sr_datafeed_analog. */
169 /** Beginning of frame. No payload. */
171 /** End of frame. No payload. */
173 /** Payload is struct sr_datafeed_analog2. */
177 /** Measured quantity, sr_datafeed_analog.mq. */
179 SR_MQ_VOLTAGE = 10000,
185 /** Duty cycle, e.g. on/off ratio. */
187 /** Continuity test. */
191 /** Electrical power, usually in W, or dBm. */
193 /** Gain (a transistor's gain, or hFE, for example). */
195 /** Logarithmic representation of sound pressure relative to a
196 * reference value. */
197 SR_MQ_SOUND_PRESSURE_LEVEL,
198 /** Carbon monoxide level */
199 SR_MQ_CARBON_MONOXIDE,
201 SR_MQ_RELATIVE_HUMIDITY,
208 /** Parallel inductance (LCR meter model). */
209 SR_MQ_PARALLEL_INDUCTANCE,
210 /** Parallel capacitance (LCR meter model). */
211 SR_MQ_PARALLEL_CAPACITANCE,
212 /** Parallel resistance (LCR meter model). */
213 SR_MQ_PARALLEL_RESISTANCE,
214 /** Series inductance (LCR meter model). */
215 SR_MQ_SERIES_INDUCTANCE,
216 /** Series capacitance (LCR meter model). */
217 SR_MQ_SERIES_CAPACITANCE,
218 /** Series resistance (LCR meter model). */
219 SR_MQ_SERIES_RESISTANCE,
220 /** Dissipation factor. */
221 SR_MQ_DISSIPATION_FACTOR,
222 /** Quality factor. */
223 SR_MQ_QUALITY_FACTOR,
226 /** Difference from reference value. */
232 /** Apparent power */
233 SR_MQ_APPARENT_POWER,
238 /** Unit of measured quantity, sr_datafeed_analog.unit. */
241 SR_UNIT_VOLT = 10000,
242 /** Ampere (current). */
244 /** Ohm (resistance). */
246 /** Farad (capacity). */
248 /** Kelvin (temperature). */
250 /** Degrees Celsius (temperature). */
252 /** Degrees Fahrenheit (temperature). */
254 /** Hertz (frequency, 1/s, [Hz]). */
256 /** Percent value. */
258 /** Boolean value. */
260 /** Time in seconds. */
262 /** Unit of conductance, the inverse of resistance. */
265 * An absolute measurement of power, in decibels, referenced to
269 /** Voltage in decibel, referenced to 1 volt (dBV). */
270 SR_UNIT_DECIBEL_VOLT,
272 * Measurements that intrinsically do not have units attached, such
273 * as ratios, gains, etc. Specifically, a transistor's gain (hFE) is
274 * a unitless quantity, for example.
277 /** Sound pressure level, in decibels, relative to 20 micropascals. */
280 * Normalized (0 to 1) concentration of a substance or compound with 0
281 * representing a concentration of 0%, and 1 being 100%. This is
282 * represented as the fraction of number of particles of the substance.
284 SR_UNIT_CONCENTRATION,
285 /** Revolutions per minute. */
286 SR_UNIT_REVOLUTIONS_PER_MINUTE,
287 /** Apparent power [VA]. */
289 /** Real power [W]. */
291 /** Consumption [Wh]. */
293 /** Wind speed in meters per second. */
294 SR_UNIT_METER_SECOND,
295 /** Pressure in hectopascal */
297 /** Relative humidity assuming air temperature of 293 Kelvin (%rF). */
298 SR_UNIT_HUMIDITY_293K,
299 /** Plane angle in 1/360th of a full circle. */
301 /** Henry (inductance). */
303 /** Mass in gram [g]. */
305 /** Mass in carat [ct]. */
307 /** Mass in ounce [oz]. */
309 /** Mass in troy ounce [oz t]. */
311 /** Mass in pound [lb]. */
313 /** Mass in pennyweight [dwt]. */
315 /** Mass in grain [gr]. */
317 /** Mass in tael (variants: Hong Kong, Singapore/Malaysia, Taiwan) */
319 /** Mass in momme. */
323 /** Pieces (number of items). */
327 /** Values for sr_datafeed_analog.flags. */
329 /** Voltage measurement is alternating current (AC). */
331 /** Voltage measurement is direct current (DC). */
333 /** This is a true RMS measurement. */
334 SR_MQFLAG_RMS = 0x04,
335 /** Value is voltage drop across a diode, or NAN. */
336 SR_MQFLAG_DIODE = 0x08,
337 /** Device is in "hold" mode (repeating the last measurement). */
338 SR_MQFLAG_HOLD = 0x10,
339 /** Device is in "max" mode, only updating upon a new max value. */
340 SR_MQFLAG_MAX = 0x20,
341 /** Device is in "min" mode, only updating upon a new min value. */
342 SR_MQFLAG_MIN = 0x40,
343 /** Device is in autoranging mode. */
344 SR_MQFLAG_AUTORANGE = 0x80,
345 /** Device is in relative mode. */
346 SR_MQFLAG_RELATIVE = 0x100,
347 /** Sound pressure level is A-weighted in the frequency domain,
348 * according to IEC 61672:2003. */
349 SR_MQFLAG_SPL_FREQ_WEIGHT_A = 0x200,
350 /** Sound pressure level is C-weighted in the frequency domain,
351 * according to IEC 61672:2003. */
352 SR_MQFLAG_SPL_FREQ_WEIGHT_C = 0x400,
353 /** Sound pressure level is Z-weighted (i.e. not at all) in the
354 * frequency domain, according to IEC 61672:2003. */
355 SR_MQFLAG_SPL_FREQ_WEIGHT_Z = 0x800,
356 /** Sound pressure level is not weighted in the frequency domain,
357 * albeit without standards-defined low and high frequency limits. */
358 SR_MQFLAG_SPL_FREQ_WEIGHT_FLAT = 0x1000,
359 /** Sound pressure level measurement is S-weighted (1s) in the
361 SR_MQFLAG_SPL_TIME_WEIGHT_S = 0x2000,
362 /** Sound pressure level measurement is F-weighted (125ms) in the
364 SR_MQFLAG_SPL_TIME_WEIGHT_F = 0x4000,
365 /** Sound pressure level is time-averaged (LAT), also known as
366 * Equivalent Continuous A-weighted Sound Level (LEQ). */
367 SR_MQFLAG_SPL_LAT = 0x8000,
368 /** Sound pressure level represented as a percentage of measurements
369 * that were over a preset alarm level. */
370 SR_MQFLAG_SPL_PCT_OVER_ALARM = 0x10000,
371 /** Time is duration (as opposed to epoch, ...). */
372 SR_MQFLAG_DURATION = 0x20000,
373 /** Device is in "avg" mode, averaging upon each new value. */
374 SR_MQFLAG_AVG = 0x40000,
375 /** Reference value shown. */
376 SR_MQFLAG_REFERENCE = 0x80000,
377 /** Unstable value (hasn't settled yet). */
378 SR_MQFLAG_UNSTABLE = 0x100000,
381 enum sr_trigger_matches {
391 /** The representation of a trigger, consisting of one or more stages
392 * containing one or more matches on a channel.
395 /** A name for this trigger. This may be NULL if none is needed. */
397 /** List of pointers to struct sr_trigger_stage. */
401 /** A trigger stage. */
402 struct sr_trigger_stage {
405 /** List of pointers to struct sr_trigger_match. */
409 /** A channel to match and what to match it on. */
410 struct sr_trigger_match {
411 /** The channel to trigger on. */
412 struct sr_channel *channel;
413 /** The trigger match to use.
414 * For logic channels, only the following matches may be used:
421 * For analog channels, only these matches may be used:
429 /** If the trigger match is one of SR_TRIGGER_OVER or SR_TRIGGER_UNDER,
430 * this contains the value to compare against. */
436 * Opaque structure representing a libsigrok context.
438 * None of the fields of this structure are meant to be accessed directly.
440 * @see sr_init(), sr_exit().
446 * Opaque structure representing a libsigrok session.
448 * None of the fields of this structure are meant to be accessed directly.
450 * @see sr_session_new(), sr_session_destroy().
455 /** Numerator of the rational number. */
457 /** Denominator of the rational number. */
461 /** Packet in a sigrok data feed. */
462 struct sr_datafeed_packet {
467 /** Header of a sigrok data feed. */
468 struct sr_datafeed_header {
470 struct timeval starttime;
473 /** Datafeed payload for type SR_DF_META. */
474 struct sr_datafeed_meta {
478 /** Logic datafeed payload for type SR_DF_LOGIC. */
479 struct sr_datafeed_logic {
485 /** Analog datafeed payload for type SR_DF_ANALOG. */
486 struct sr_datafeed_analog {
487 /** The channels for which data is included in this packet. */
489 /** Number of samples in data */
491 /** Measured quantity (voltage, current, temperature, and so on).
492 * Use SR_MQ_VOLTAGE, ... */
494 /** Unit in which the MQ is measured. Use SR_UNIT_VOLT, ... */
496 /** Bitmap with extra information about the MQ. Use SR_MQFLAG_AC, ... */
498 /** The analog value(s). The data is interleaved according to
499 * the channels list. */
503 /** Analog datafeed payload for type SR_DF_ANALOG2. */
504 struct sr_datafeed_analog2 {
506 uint32_t num_samples;
507 struct sr_analog_encoding *encoding;
508 struct sr_analog_meaning *meaning;
509 struct sr_analog_spec *spec;
512 struct sr_analog_encoding {
516 gboolean is_bigendian;
518 gboolean is_digits_decimal;
519 struct sr_rational scale;
520 struct sr_rational offset;
523 struct sr_analog_meaning {
526 enum sr_mqflag mqflags;
530 struct sr_analog_spec {
534 /** Generic option struct used by various subsystems. */
536 /* Short name suitable for commandline usage, [a-z0-9-]. */
538 /* Short name suitable for GUI usage, can contain UTF-8. */
540 /* Description of the option, in a sentence. */
542 /* Default value for this option. */
544 /* List of possible values, if this is an option with few values. */
548 /** Output module flags. */
549 enum sr_output_flag {
550 /** If set, this output module writes the output itself. */
551 SR_OUTPUT_INTERNAL_IO_HANDLING = 0x01,
555 struct sr_input_module;
557 struct sr_output_module;
559 struct sr_transform_module;
561 /** Constants for channel type. */
562 enum sr_channeltype {
563 /** Channel type is logic channel. */
564 SR_CHANNEL_LOGIC = 10000,
565 /** Channel type is analog channel. */
569 /** Information on single channel. */
571 /** The device this channel is attached to. */
572 struct sr_dev_inst *sdi;
573 /** The index of this channel, starting at 0. Logic channels will
574 * be encoded according to this index in SR_DF_LOGIC packets. */
576 /** Channel type (SR_CHANNEL_LOGIC, ...) */
578 /** Is this channel enabled? */
580 /** Name of channel. */
582 /** Private data for driver use. */
586 /** Structure for groups of channels that have common properties. */
587 struct sr_channel_group {
588 /** Name of the channel group. */
590 /** List of sr_channel structs of the channels belonging to this group. */
592 /** Private data for driver use. */
596 /** Used for setting or getting value of a config item. */
598 /** Config key like SR_CONF_CONN, etc. */
600 /** Key-specific data. */
610 /** Information about a key. */
612 /** Config key like SR_CONF_CONN, MQ value like SR_MQ_VOLTAGE, etc. */
614 /** Data type like SR_T_STRING, etc if applicable. */
616 /** Short, lowercase ID string, e.g. "serialcomm", "voltage". */
618 /** Full capitalized name, e.g. "Serial communication". */
620 /** Verbose description (unused currently). */
624 #define SR_CONF_GET (1 << 31)
625 #define SR_CONF_SET (1 << 30)
626 #define SR_CONF_LIST (1 << 29)
627 #define SR_CONF_MASK 0x1fffffff
629 /** Configuration keys */
631 /*--- Device classes ------------------------------------------------*/
633 /** The device can act as logic analyzer. */
634 SR_CONF_LOGIC_ANALYZER = 10000,
636 /** The device can act as an oscilloscope. */
637 SR_CONF_OSCILLOSCOPE,
639 /** The device can act as a multimeter. */
642 /** The device is a demo device. */
645 /** The device can act as a sound level meter. */
646 SR_CONF_SOUNDLEVELMETER,
648 /** The device can measure temperature. */
651 /** The device can measure humidity. */
654 /** The device can measure energy consumption. */
657 /** The device can act as a signal demodulator. */
660 /** The device can act as a programmable power supply. */
661 SR_CONF_POWER_SUPPLY,
663 /** The device can act as an LCR meter. */
666 /** The device can act as an electronic load. */
667 SR_CONF_ELECTRONIC_LOAD,
669 /** The device can act as a scale. */
672 /*--- Driver scan options -------------------------------------------*/
675 * Specification on how to connect to a device.
677 * In combination with SR_CONF_SERIALCOMM, this is a serial port in
678 * the form which makes sense to the OS (e.g., /dev/ttyS0).
679 * Otherwise this specifies a USB device, either in the form of
680 * @verbatim <bus>.<address> @endverbatim (decimal, e.g. 1.65) or
681 * @verbatim <vendorid>.<productid> @endverbatim
682 * (hexadecimal, e.g. 1d6b.0001).
684 SR_CONF_CONN = 20000,
687 * Serial communication specification, in the form:
689 * @verbatim <baudrate>/<databits><parity><stopbits> @endverbatim
693 * The string may also be followed by one or more special settings,
694 * in the form "/key=value". Supported keys and their values are:
696 * rts 0,1 set the port's RTS pin to low or high
697 * dtr 0,1 set the port's DTR pin to low or high
698 * flow 0 no flow control
699 * 1 hardware-based (RTS/CTS) flow control
700 * 2 software-based (XON/XOFF) flow control
702 * This is always an optional parameter, since a driver typically
703 * knows the speed at which the device wants to communicate.
708 * Modbus slave address specification.
710 * This is always an optional parameter, since a driver typically
711 * knows the default slave address of the device.
715 /*--- Device (or channel group) configuration -----------------------*/
717 /** The device supports setting its samplerate, in Hz. */
718 SR_CONF_SAMPLERATE = 30000,
720 /** The device supports setting a pre/post-trigger capture ratio. */
721 SR_CONF_CAPTURE_RATIO,
723 /** The device supports setting a pattern (pattern generator mode). */
724 SR_CONF_PATTERN_MODE,
726 /** The device supports run-length encoding (RLE). */
729 /** The device supports setting trigger slope. */
730 SR_CONF_TRIGGER_SLOPE,
732 /** The device supports averaging. */
736 * The device supports setting number of samples to be
741 /** Trigger source. */
742 SR_CONF_TRIGGER_SOURCE,
744 /** Horizontal trigger position. */
745 SR_CONF_HORIZ_TRIGGERPOS,
762 /** Trigger matches. */
763 SR_CONF_TRIGGER_MATCH,
765 /** The device supports setting its sample interval, in ms. */
766 SR_CONF_SAMPLE_INTERVAL,
768 /** Number of horizontal divisions, as related to SR_CONF_TIMEBASE. */
771 /** Number of vertical divisions, as related to SR_CONF_VDIV. */
774 /** Sound pressure level frequency weighting. */
775 SR_CONF_SPL_WEIGHT_FREQ,
777 /** Sound pressure level time weighting. */
778 SR_CONF_SPL_WEIGHT_TIME,
780 /** Sound pressure level measurement range. */
781 SR_CONF_SPL_MEASUREMENT_RANGE,
783 /** Max hold mode. */
786 /** Min hold mode. */
789 /** Logic low-high threshold range. */
790 SR_CONF_VOLTAGE_THRESHOLD,
792 /** The device supports using an external clock. */
793 SR_CONF_EXTERNAL_CLOCK,
796 * The device supports swapping channels. Typical this is between
797 * buffered and unbuffered channels.
801 /** Center frequency.
802 * The input signal is downmixed by this frequency before the ADC
803 * anti-aliasing filter.
805 SR_CONF_CENTER_FREQUENCY,
807 /** The device supports setting the number of logic channels. */
808 SR_CONF_NUM_LOGIC_CHANNELS,
810 /** The device supports setting the number of analog channels. */
811 SR_CONF_NUM_ANALOG_CHANNELS,
816 * @arg get: get measured voltage
821 * Maximum target voltage.
823 * @arg get: get target voltage
824 * @arg set: change target voltage
826 SR_CONF_VOLTAGE_TARGET,
831 * @arg get: get measured current
838 * @arg get: get current limit
839 * @arg set: change current limit
841 SR_CONF_CURRENT_LIMIT,
844 * Enabling/disabling channel.
846 * @arg get: @b true if currently enabled
847 * @arg set: enable/disable
852 * Channel configuration.
854 * @arg get: get current setting
855 * @arg set: change current setting
856 * @arg list: array of possible values
858 SR_CONF_CHANNEL_CONFIG,
861 * Over-voltage protection (OVP) feature
863 * @arg get: @b true if currently enabled
864 * @arg set: enable/disable
866 SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED,
869 * Over-voltage protection (OVP) active
871 * @arg get: @b true if device has activated OVP, i.e. the output voltage
872 * exceeds the over-voltage protection threshold.
874 SR_CONF_OVER_VOLTAGE_PROTECTION_ACTIVE,
877 * Over-voltage protection (OVP) threshold
878 * @arg type: double (voltage)
879 * @arg get: get current threshold
880 * @arg set: set new threshold
882 SR_CONF_OVER_VOLTAGE_PROTECTION_THRESHOLD,
885 * Over-current protection (OCP) feature
887 * @arg get: @b true if currently enabled
888 * @arg set: enable/disable
890 SR_CONF_OVER_CURRENT_PROTECTION_ENABLED,
893 * Over-current protection (OCP) active
895 * @arg get: @b true if device has activated OCP, i.e. the current current
896 * exceeds the over-current protection threshold.
898 SR_CONF_OVER_CURRENT_PROTECTION_ACTIVE,
901 * Over-current protection (OCP) threshold
902 * @arg type: double (current)
903 * @arg get: get current threshold
904 * @arg set: set new threshold
906 SR_CONF_OVER_CURRENT_PROTECTION_THRESHOLD,
908 /** Choice of clock edge for external clock ("r" or "f"). */
911 /** Amplitude of a source without strictly-defined MQ. */
916 * get: "CV", "CC" or "UR", denoting constant voltage, constant current
921 /** Over-temperature protection (OTP) */
922 SR_CONF_OVER_TEMPERATURE_PROTECTION,
924 /** Output frequency in Hz. */
925 SR_CONF_OUTPUT_FREQUENCY,
927 /** Output frequency target in Hz. */
928 SR_CONF_OUTPUT_FREQUENCY_TARGET,
930 /** Measured quantity. */
931 SR_CONF_MEASURED_QUANTITY,
933 /** Measured secondary quantity. */
934 SR_CONF_MEASURED_2ND_QUANTITY,
936 /** Equivalent circuit model. */
937 SR_CONF_EQUIV_CIRCUIT_MODEL,
939 /** Over-temperature protection (OTP) active. */
940 SR_CONF_OVER_TEMPERATURE_PROTECTION_ACTIVE,
942 /*--- Special stuff -------------------------------------------------*/
944 /** Scan options supported by the driver. */
945 SR_CONF_SCAN_OPTIONS = 40000,
947 /** Device options for a particular device. */
948 SR_CONF_DEVICE_OPTIONS,
950 /** Session filename. */
953 /** The device supports specifying a capturefile to inject. */
956 /** The device supports specifying the capturefile unit size. */
957 SR_CONF_CAPTURE_UNITSIZE,
959 /** Power off the device. */
963 * Data source for acquisition. If not present, acquisition from
964 * the device is always "live", i.e. acquisition starts when the
965 * frontend asks and the results are sent out as soon as possible.
967 * If present, it indicates that either the device has no live
968 * acquisition capability (for example a pure data logger), or
969 * there is a choice. sr_config_list() returns those choices.
971 * In any case if a device has live acquisition capabilities, it
972 * is always the default.
976 /** The device supports setting a probe factor. */
977 SR_CONF_PROBE_FACTOR,
979 /*--- Acquisition modes, sample limiting ----------------------------*/
982 * The device supports setting a sample time limit (how long
983 * the sample acquisition should run, in ms).
985 SR_CONF_LIMIT_MSEC = 50000,
988 * The device supports setting a sample number limit (how many
989 * samples should be acquired).
991 SR_CONF_LIMIT_SAMPLES,
994 * The device supports setting a frame limit (how many
995 * frames should be acquired).
997 SR_CONF_LIMIT_FRAMES,
1000 * The device supports continuous sampling. Neither a time limit
1001 * nor a sample number limit has to be supplied, it will just acquire
1002 * samples continuously, until explicitly stopped by a certain command.
1006 /** The device has internal storage, into which data is logged. This
1007 * starts or stops the internal logging. */
1010 /** Device mode for multi-function devices. */
1011 SR_CONF_DEVICE_MODE,
1013 /** Self test mode. */
1018 * Opaque structure representing a libsigrok device instance.
1020 * None of the fields of this structure are meant to be accessed directly.
1024 /** Types of device instance, struct sr_dev_inst.type */
1025 enum sr_dev_inst_type {
1026 /** Device instance type for USB devices. */
1027 SR_INST_USB = 10000,
1028 /** Device instance type for serial port devices. */
1030 /** Device instance type for SCPI devices. */
1032 /** Device-instance type for user-created "devices". */
1034 /** Device instance type for Modbus devices. */
1038 /** Device instance status, struct sr_dev_inst.status */
1039 enum sr_dev_inst_status {
1040 /** The device instance was not found. */
1041 SR_ST_NOT_FOUND = 10000,
1042 /** The device instance was found, but is still booting. */
1044 /** The device instance is live, but not in use. */
1046 /** The device instance is actively in use in a session. */
1048 /** The device is winding down its session. */
1052 /** Device driver data. See also http://sigrok.org/wiki/Hardware_driver_API . */
1053 struct sr_dev_driver {
1054 /* Driver-specific */
1055 /** Driver name. Lowercase a-z, 0-9 and dashes (-) only. */
1057 /** Long name. Verbose driver name shown to user. */
1059 /** API version (currently 1). */
1061 /** Called when driver is loaded, e.g. program startup. */
1062 int (*init) (struct sr_dev_driver *driver, struct sr_context *sr_ctx);
1063 /** Called before driver is unloaded.
1064 * Driver must free all resources held by it. */
1065 int (*cleanup) (const struct sr_dev_driver *driver);
1066 /** Scan for devices. Driver should do all initialisation required.
1067 * Can be called several times, e.g. with different port options.
1068 * @retval NULL Error or no devices found.
1069 * @retval other GSList of a struct sr_dev_inst for each device.
1070 * Must be freed by caller!
1072 GSList *(*scan) (struct sr_dev_driver *driver, GSList *options);
1073 /** Get list of device instances the driver knows about.
1074 * @returns NULL or GSList of a struct sr_dev_inst for each device.
1075 * Must not be freed by caller!
1077 GSList *(*dev_list) (const struct sr_dev_driver *driver);
1078 /** Clear list of devices the driver knows about. */
1079 int (*dev_clear) (const struct sr_dev_driver *driver);
1080 /** Query value of a configuration key in driver or given device instance.
1081 * @see sr_config_get().
1083 int (*config_get) (uint32_t key, GVariant **data,
1084 const struct sr_dev_inst *sdi,
1085 const struct sr_channel_group *cg);
1086 /** Set value of a configuration key in driver or a given device instance.
1087 * @see sr_config_set(). */
1088 int (*config_set) (uint32_t key, GVariant *data,
1089 const struct sr_dev_inst *sdi,
1090 const struct sr_channel_group *cg);
1091 /** Channel status change.
1092 * @see sr_dev_channel_enable(). */
1093 int (*config_channel_set) (const struct sr_dev_inst *sdi,
1094 struct sr_channel *ch, unsigned int changes);
1095 /** Apply configuration settings to the device hardware.
1096 * @see sr_config_commit().*/
1097 int (*config_commit) (const struct sr_dev_inst *sdi);
1098 /** List all possible values for a configuration key in a device instance.
1099 * @see sr_config_list().
1101 int (*config_list) (uint32_t key, GVariant **data,
1102 const struct sr_dev_inst *sdi,
1103 const struct sr_channel_group *cg);
1105 /* Device-specific */
1107 int (*dev_open) (struct sr_dev_inst *sdi);
1109 int (*dev_close) (struct sr_dev_inst *sdi);
1110 /** Begin data acquisition on the specified device. */
1111 int (*dev_acquisition_start) (const struct sr_dev_inst *sdi,
1113 /** End data acquisition on the specified device. */
1114 int (*dev_acquisition_stop) (struct sr_dev_inst *sdi,
1118 /** Device driver context, considered private. Initialized by init(). */
1123 * @struct sr_session
1125 * Opaque data structure representing a libsigrok session. None of the fields
1126 * of this structure are meant to be accessed directly.
1130 /** Serial port descriptor. */
1131 struct sr_serial_port {
1132 /** The OS dependent name of the serial port. */
1134 /** An end user friendly description for the serial port. */
1138 #include <libsigrok/proto.h>
1139 #include <libsigrok/version.h>