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 = 0, /**< No error. */
68 SR_ERR = -1, /**< Generic/unspecified error. */
69 SR_ERR_MALLOC = -2, /**< Malloc/calloc/realloc error. */
70 SR_ERR_ARG = -3, /**< Function argument error. */
71 SR_ERR_BUG = -4, /**< Errors hinting at internal bugs. */
72 SR_ERR_SAMPLERATE = -5, /**< Incorrect samplerate. */
73 SR_ERR_NA = -6, /**< Not applicable. */
74 SR_ERR_DEV_CLOSED = -7, /**< Device is closed, but must be open. */
75 SR_ERR_TIMEOUT = -8, /**< A timeout occurred. */
76 SR_ERR_CHANNEL_GROUP = -9, /**< A channel group must be specified. */
77 SR_ERR_DATA =-10, /**< Data is invalid. */
78 SR_ERR_IO =-11, /**< Input/output error. */
80 /* Update sr_strerror()/sr_strerror_name() (error.c) upon changes! */
83 #define SR_MAX_CHANNELNAME_LEN 32
85 /* Handy little macros */
87 #define SR_KHZ(n) ((n) * UINT64_C(1000))
88 #define SR_MHZ(n) ((n) * UINT64_C(1000000))
89 #define SR_GHZ(n) ((n) * UINT64_C(1000000000))
91 #define SR_HZ_TO_NS(n) (UINT64_C(1000000000) / (n))
93 /** libsigrok loglevels. */
95 SR_LOG_NONE = 0, /**< Output no messages at all. */
96 SR_LOG_ERR = 1, /**< Output error messages. */
97 SR_LOG_WARN = 2, /**< Output warnings. */
98 SR_LOG_INFO = 3, /**< Output informational messages. */
99 SR_LOG_DBG = 4, /**< Output debug messages. */
100 SR_LOG_SPEW = 5, /**< Output very noisy debug messages. */
104 * Use SR_API to mark public API symbols, and SR_PRIV for private symbols.
106 * Variables and functions marked 'static' are private already and don't
107 * need SR_PRIV. However, functions which are not static (because they need
108 * to be used in other libsigrok-internal files) but are also not meant to
109 * be part of the public libsigrok API, must use SR_PRIV.
111 * This uses the 'visibility' feature of gcc (requires gcc >= 4.0).
113 * This feature is not available on MinGW/Windows, as it is a feature of
114 * ELF files and MinGW/Windows uses PE files.
116 * Details: http://gcc.gnu.org/wiki/Visibility
119 /* Marks public libsigrok API symbols. */
121 #define SR_API __attribute__((visibility("default")))
126 /* Marks private, non-public libsigrok symbols (not part of the API). */
128 #define SR_PRIV __attribute__((visibility("hidden")))
133 /** Type definition for callback function for data reception. */
134 typedef int (*sr_receive_data_callback)(int fd, int revents, void *cb_data);
136 /** Data types used by sr_config_info(). */
142 SR_T_RATIONAL_PERIOD,
150 /* Update sr_variant_type_get() (hwdriver.c) upon changes! */
153 /** Value for sr_datafeed_packet.type. */
155 /** Payload is sr_datafeed_header. */
156 SR_DF_HEADER = 10000,
157 /** End of stream (no further data). */
159 /** Payload is struct sr_datafeed_meta */
161 /** The trigger matched at this point in the data feed. No payload. */
163 /** Payload is struct sr_datafeed_logic. */
165 /** Beginning of frame. No payload. */
167 /** End of frame. No payload. */
169 /** Payload is struct sr_datafeed_analog. */
172 /* Update datafeed_dump() (session.c) upon changes! */
175 /** Measured quantity, sr_analog_meaning.mq. */
177 SR_MQ_VOLTAGE = 10000,
183 /** Duty cycle, e.g. on/off ratio. */
185 /** Continuity test. */
189 /** Electrical power, usually in W, or dBm. */
191 /** Gain (a transistor's gain, or hFE, for example). */
193 /** Logarithmic representation of sound pressure relative to a
194 * reference value. */
195 SR_MQ_SOUND_PRESSURE_LEVEL,
196 /** Carbon monoxide level */
197 SR_MQ_CARBON_MONOXIDE,
199 SR_MQ_RELATIVE_HUMIDITY,
206 /** Parallel inductance (LCR meter model). */
207 SR_MQ_PARALLEL_INDUCTANCE,
208 /** Parallel capacitance (LCR meter model). */
209 SR_MQ_PARALLEL_CAPACITANCE,
210 /** Parallel resistance (LCR meter model). */
211 SR_MQ_PARALLEL_RESISTANCE,
212 /** Series inductance (LCR meter model). */
213 SR_MQ_SERIES_INDUCTANCE,
214 /** Series capacitance (LCR meter model). */
215 SR_MQ_SERIES_CAPACITANCE,
216 /** Series resistance (LCR meter model). */
217 SR_MQ_SERIES_RESISTANCE,
218 /** Dissipation factor. */
219 SR_MQ_DISSIPATION_FACTOR,
220 /** Quality factor. */
221 SR_MQ_QUALITY_FACTOR,
224 /** Difference from reference value. */
230 /** Apparent power */
231 SR_MQ_APPARENT_POWER,
234 /** Harmonic ratio */
235 SR_MQ_HARMONIC_RATIO,
238 /** Electric charge. */
239 SR_MQ_ELECTRIC_CHARGE,
241 /* Update sr_key_info_mq[] (hwdriver.c) upon changes! */
244 /** Unit of measured quantity, sr_analog_meaning.unit. */
247 SR_UNIT_VOLT = 10000,
248 /** Ampere (current). */
250 /** Ohm (resistance). */
252 /** Farad (capacity). */
254 /** Kelvin (temperature). */
256 /** Degrees Celsius (temperature). */
258 /** Degrees Fahrenheit (temperature). */
260 /** Hertz (frequency, 1/s, [Hz]). */
262 /** Percent value. */
264 /** Boolean value. */
266 /** Time in seconds. */
268 /** Unit of conductance, the inverse of resistance. */
271 * An absolute measurement of power, in decibels, referenced to
275 /** Voltage in decibel, referenced to 1 volt (dBV). */
276 SR_UNIT_DECIBEL_VOLT,
278 * Measurements that intrinsically do not have units attached, such
279 * as ratios, gains, etc. Specifically, a transistor's gain (hFE) is
280 * a unitless quantity, for example.
283 /** Sound pressure level, in decibels, relative to 20 micropascals. */
286 * Normalized (0 to 1) concentration of a substance or compound with 0
287 * representing a concentration of 0%, and 1 being 100%. This is
288 * represented as the fraction of number of particles of the substance.
290 SR_UNIT_CONCENTRATION,
291 /** Revolutions per minute. */
292 SR_UNIT_REVOLUTIONS_PER_MINUTE,
293 /** Apparent power [VA]. */
295 /** Real power [W]. */
297 /** Consumption [Wh]. */
299 /** Wind speed in meters per second. */
300 SR_UNIT_METER_SECOND,
301 /** Pressure in hectopascal */
303 /** Relative humidity assuming air temperature of 293 Kelvin (%rF). */
304 SR_UNIT_HUMIDITY_293K,
305 /** Plane angle in 1/360th of a full circle. */
307 /** Henry (inductance). */
309 /** Mass in gram [g]. */
311 /** Mass in carat [ct]. */
313 /** Mass in ounce [oz]. */
315 /** Mass in troy ounce [oz t]. */
317 /** Mass in pound [lb]. */
319 /** Mass in pennyweight [dwt]. */
321 /** Mass in grain [gr]. */
323 /** Mass in tael (variants: Hong Kong, Singapore/Malaysia, Taiwan) */
325 /** Mass in momme. */
329 /** Pieces (number of items). */
333 * Update unit_strings[] (analog.c) and fancyprint() (output/analog.c)
338 /** Values for sr_analog_meaning.mqflags. */
340 /** Voltage measurement is alternating current (AC). */
342 /** Voltage measurement is direct current (DC). */
344 /** This is a true RMS measurement. */
345 SR_MQFLAG_RMS = 0x04,
346 /** Value is voltage drop across a diode, or NAN. */
347 SR_MQFLAG_DIODE = 0x08,
348 /** Device is in "hold" mode (repeating the last measurement). */
349 SR_MQFLAG_HOLD = 0x10,
350 /** Device is in "max" mode, only updating upon a new max value. */
351 SR_MQFLAG_MAX = 0x20,
352 /** Device is in "min" mode, only updating upon a new min value. */
353 SR_MQFLAG_MIN = 0x40,
354 /** Device is in autoranging mode. */
355 SR_MQFLAG_AUTORANGE = 0x80,
356 /** Device is in relative mode. */
357 SR_MQFLAG_RELATIVE = 0x100,
358 /** Sound pressure level is A-weighted in the frequency domain,
359 * according to IEC 61672:2003. */
360 SR_MQFLAG_SPL_FREQ_WEIGHT_A = 0x200,
361 /** Sound pressure level is C-weighted in the frequency domain,
362 * according to IEC 61672:2003. */
363 SR_MQFLAG_SPL_FREQ_WEIGHT_C = 0x400,
364 /** Sound pressure level is Z-weighted (i.e. not at all) in the
365 * frequency domain, according to IEC 61672:2003. */
366 SR_MQFLAG_SPL_FREQ_WEIGHT_Z = 0x800,
367 /** Sound pressure level is not weighted in the frequency domain,
368 * albeit without standards-defined low and high frequency limits. */
369 SR_MQFLAG_SPL_FREQ_WEIGHT_FLAT = 0x1000,
370 /** Sound pressure level measurement is S-weighted (1s) in the
372 SR_MQFLAG_SPL_TIME_WEIGHT_S = 0x2000,
373 /** Sound pressure level measurement is F-weighted (125ms) in the
375 SR_MQFLAG_SPL_TIME_WEIGHT_F = 0x4000,
376 /** Sound pressure level is time-averaged (LAT), also known as
377 * Equivalent Continuous A-weighted Sound Level (LEQ). */
378 SR_MQFLAG_SPL_LAT = 0x8000,
379 /** Sound pressure level represented as a percentage of measurements
380 * that were over a preset alarm level. */
381 SR_MQFLAG_SPL_PCT_OVER_ALARM = 0x10000,
382 /** Time is duration (as opposed to epoch, ...). */
383 SR_MQFLAG_DURATION = 0x20000,
384 /** Device is in "avg" mode, averaging upon each new value. */
385 SR_MQFLAG_AVG = 0x40000,
386 /** Reference value shown. */
387 SR_MQFLAG_REFERENCE = 0x80000,
388 /** Unstable value (hasn't settled yet). */
389 SR_MQFLAG_UNSTABLE = 0x100000,
390 /** Measurement is four wire (e.g. Kelvin connection). */
391 SR_MQFLAG_FOUR_WIRE = 0x200000,
394 * Update mq_strings[] (analog.c) and fancyprint() (output/analog.c)
399 enum sr_trigger_matches {
409 /** The representation of a trigger, consisting of one or more stages
410 * containing one or more matches on a channel.
413 /** A name for this trigger. This may be NULL if none is needed. */
415 /** List of pointers to struct sr_trigger_stage. */
419 /** A trigger stage. */
420 struct sr_trigger_stage {
423 /** List of pointers to struct sr_trigger_match. */
427 /** A channel to match and what to match it on. */
428 struct sr_trigger_match {
429 /** The channel to trigger on. */
430 struct sr_channel *channel;
431 /** The trigger match to use.
432 * For logic channels, only the following matches may be used:
439 * For analog channels, only these matches may be used:
447 /** If the trigger match is one of SR_TRIGGER_OVER or SR_TRIGGER_UNDER,
448 * this contains the value to compare against. */
454 * Opaque structure representing a libsigrok context.
456 * None of the fields of this structure are meant to be accessed directly.
458 * @see sr_init(), sr_exit().
464 * Opaque structure representing a libsigrok session.
466 * None of the fields of this structure are meant to be accessed directly.
468 * @see sr_session_new(), sr_session_destroy().
473 /** Numerator of the rational number. */
475 /** Denominator of the rational number. */
479 /** Packet in a sigrok data feed. */
480 struct sr_datafeed_packet {
485 /** Header of a sigrok data feed. */
486 struct sr_datafeed_header {
488 struct timeval starttime;
491 /** Datafeed payload for type SR_DF_META. */
492 struct sr_datafeed_meta {
496 /** Logic datafeed payload for type SR_DF_LOGIC. */
497 struct sr_datafeed_logic {
503 /** Analog datafeed payload for type SR_DF_ANALOG. */
504 struct sr_datafeed_analog {
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 * Number of significant digits after the decimal point if positive,
519 * or number of non-significant digits before the decimal point if
520 * negative (refers to the value we actually read on the wire).
523 gboolean is_digits_decimal;
524 struct sr_rational scale;
525 struct sr_rational offset;
528 struct sr_analog_meaning {
531 enum sr_mqflag mqflags;
535 struct sr_analog_spec {
537 * Number of significant digits after the decimal point if positive,
538 * or number of non-significant digits before the decimal point if
539 * negative (refers to vendor specifications/datasheet or actual
545 /** Generic option struct used by various subsystems. */
547 /* Short name suitable for commandline usage, [a-z0-9-]. */
549 /* Short name suitable for GUI usage, can contain UTF-8. */
551 /* Description of the option, in a sentence. */
553 /* Default value for this option. */
555 /* List of possible values, if this is an option with few values. */
562 enum sr_resource_type {
563 SR_RESOURCE_FIRMWARE = 1,
566 /** Resource descriptor.
570 /** Size of resource in bytes; set by resource open callback. */
572 /** File handle or equivalent; set by resource open callback. */
574 /** Resource type (SR_RESOURCE_FIRMWARE, ...) */
578 /** Output module flags. */
579 enum sr_output_flag {
580 /** If set, this output module writes the output itself. */
581 SR_OUTPUT_INTERNAL_IO_HANDLING = 0x01,
585 struct sr_input_module;
587 struct sr_output_module;
589 struct sr_transform_module;
591 /** Constants for channel type. */
592 enum sr_channeltype {
593 /** Channel type is logic channel. */
594 SR_CHANNEL_LOGIC = 10000,
595 /** Channel type is analog channel. */
599 /** Information on single channel. */
601 /** The device this channel is attached to. */
602 struct sr_dev_inst *sdi;
603 /** The index of this channel, starting at 0. Logic channels will
604 * be encoded according to this index in SR_DF_LOGIC packets. */
606 /** Channel type (SR_CHANNEL_LOGIC, ...) */
608 /** Is this channel enabled? */
610 /** Name of channel. */
612 /** Private data for driver use. */
616 /** Structure for groups of channels that have common properties. */
617 struct sr_channel_group {
618 /** Name of the channel group. */
620 /** List of sr_channel structs of the channels belonging to this group. */
622 /** Private data for driver use. */
626 /** Used for setting or getting value of a config item. */
628 /** Config key like SR_CONF_CONN, etc. */
630 /** Key-specific data. */
640 /** Information about a key. */
642 /** Config key like SR_CONF_CONN, MQ value like SR_MQ_VOLTAGE, etc. */
644 /** Data type like SR_T_STRING, etc if applicable. */
646 /** Short, lowercase ID string, e.g. "serialcomm", "voltage". */
648 /** Full capitalized name, e.g. "Serial communication". */
650 /** Verbose description (unused currently). */
651 const char *description;
654 /** Configuration capabilities. */
656 /** Value can be read. */
657 SR_CONF_GET = (1UL << 31),
658 /** Value can be written. */
659 SR_CONF_SET = (1UL << 30),
660 /** Possible values can be enumerated. */
661 SR_CONF_LIST = (1UL << 29),
664 /** Configuration keys */
666 /*--- Device classes ------------------------------------------------*/
668 /** The device can act as logic analyzer. */
669 SR_CONF_LOGIC_ANALYZER = 10000,
671 /** The device can act as an oscilloscope. */
672 SR_CONF_OSCILLOSCOPE,
674 /** The device can act as a multimeter. */
677 /** The device is a demo device. */
680 /** The device can act as a sound level meter. */
681 SR_CONF_SOUNDLEVELMETER,
683 /** The device can measure temperature. */
686 /** The device can measure humidity. */
689 /** The device can measure energy consumption. */
692 /** The device can act as a signal demodulator. */
695 /** The device can act as a programmable power supply. */
696 SR_CONF_POWER_SUPPLY,
698 /** The device can act as an LCR meter. */
701 /** The device can act as an electronic load. */
702 SR_CONF_ELECTRONIC_LOAD,
704 /** The device can act as a scale. */
707 /** The device can act as a function generator. */
708 SR_CONF_SIGNAL_GENERATOR,
710 /** The device can measure power. */
713 /* Update sr_key_info_config[] (hwdriver.c) upon changes! */
715 /*--- Driver scan options -------------------------------------------*/
718 * Specification on how to connect to a device.
720 * In combination with SR_CONF_SERIALCOMM, this is a serial port in
721 * the form which makes sense to the OS (e.g., /dev/ttyS0).
722 * Otherwise this specifies a USB device, either in the form of
723 * @verbatim <bus>.<address> @endverbatim (decimal, e.g. 1.65) or
724 * @verbatim <vendorid>.<productid> @endverbatim
725 * (hexadecimal, e.g. 1d6b.0001).
727 SR_CONF_CONN = 20000,
730 * Serial communication specification, in the form:
732 * @verbatim <baudrate>/<databits><parity><stopbits> @endverbatim
736 * The string may also be followed by one or more special settings,
737 * in the form "/key=value". Supported keys and their values are:
739 * rts 0,1 set the port's RTS pin to low or high
740 * dtr 0,1 set the port's DTR pin to low or high
741 * flow 0 no flow control
742 * 1 hardware-based (RTS/CTS) flow control
743 * 2 software-based (XON/XOFF) flow control
745 * This is always an optional parameter, since a driver typically
746 * knows the speed at which the device wants to communicate.
751 * Modbus slave address specification.
753 * This is always an optional parameter, since a driver typically
754 * knows the default slave address of the device.
759 * User specified forced driver attachment to unknown devices.
761 * By design the interpretation of the string depends on the
762 * specific driver. It typically would be either a replacement
763 * '*IDN?' response value, or a sub-driver name. But could also
764 * be anything else and totally arbitrary.
766 SR_CONF_FORCE_DETECT,
768 /* Update sr_key_info_config[] (hwdriver.c) upon changes! */
770 /*--- Device (or channel group) configuration -----------------------*/
772 /** The device supports setting its samplerate, in Hz. */
773 SR_CONF_SAMPLERATE = 30000,
775 /** The device supports setting a pre/post-trigger capture ratio. */
776 SR_CONF_CAPTURE_RATIO,
778 /** The device supports setting a pattern (pattern generator mode). */
779 SR_CONF_PATTERN_MODE,
781 /** The device supports run-length encoding (RLE). */
784 /** The device supports setting trigger slope. */
785 SR_CONF_TRIGGER_SLOPE,
787 /** The device supports averaging. */
791 * The device supports setting number of samples to be
796 /** Trigger source. */
797 SR_CONF_TRIGGER_SOURCE,
799 /** Horizontal trigger position. */
800 SR_CONF_HORIZ_TRIGGERPOS,
817 /** Trigger matches. */
818 SR_CONF_TRIGGER_MATCH,
820 /** The device supports setting its sample interval, in ms. */
821 SR_CONF_SAMPLE_INTERVAL,
823 /** Number of horizontal divisions, as related to SR_CONF_TIMEBASE. */
826 /** Number of vertical divisions, as related to SR_CONF_VDIV. */
829 /** Sound pressure level frequency weighting. */
830 SR_CONF_SPL_WEIGHT_FREQ,
832 /** Sound pressure level time weighting. */
833 SR_CONF_SPL_WEIGHT_TIME,
835 /** Sound pressure level measurement range. */
836 SR_CONF_SPL_MEASUREMENT_RANGE,
838 /** Max hold mode. */
841 /** Min hold mode. */
844 /** Logic low-high threshold range. */
845 SR_CONF_VOLTAGE_THRESHOLD,
847 /** The device supports using an external clock. */
848 SR_CONF_EXTERNAL_CLOCK,
851 * The device supports swapping channels. Typical this is between
852 * buffered and unbuffered channels.
856 /** Center frequency.
857 * The input signal is downmixed by this frequency before the ADC
858 * anti-aliasing filter.
860 SR_CONF_CENTER_FREQUENCY,
862 /** The device supports setting the number of logic channels. */
863 SR_CONF_NUM_LOGIC_CHANNELS,
865 /** The device supports setting the number of analog channels. */
866 SR_CONF_NUM_ANALOG_CHANNELS,
871 * @arg get: get measured voltage
876 * Maximum target voltage.
878 * @arg get: get target voltage
879 * @arg set: change target voltage
881 SR_CONF_VOLTAGE_TARGET,
886 * @arg get: get measured current
893 * @arg get: get current limit
894 * @arg set: change current limit
896 SR_CONF_CURRENT_LIMIT,
899 * Enabling/disabling channel.
901 * @arg get: @b true if currently enabled
902 * @arg set: enable/disable
907 * Channel configuration.
909 * @arg get: get current setting
910 * @arg set: change current setting
911 * @arg list: array of possible values
913 SR_CONF_CHANNEL_CONFIG,
916 * Over-voltage protection (OVP) feature
918 * @arg get: @b true if currently enabled
919 * @arg set: enable/disable
921 SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED,
924 * Over-voltage protection (OVP) active
926 * @arg get: @b true if device has activated OVP, i.e. the output voltage
927 * exceeds the over-voltage protection threshold.
929 SR_CONF_OVER_VOLTAGE_PROTECTION_ACTIVE,
932 * Over-voltage protection (OVP) threshold
933 * @arg type: double (voltage)
934 * @arg get: get current threshold
935 * @arg set: set new threshold
937 SR_CONF_OVER_VOLTAGE_PROTECTION_THRESHOLD,
940 * Over-current protection (OCP) feature
942 * @arg get: @b true if currently enabled
943 * @arg set: enable/disable
945 SR_CONF_OVER_CURRENT_PROTECTION_ENABLED,
948 * Over-current protection (OCP) active
950 * @arg get: @b true if device has activated OCP, i.e. the current current
951 * exceeds the over-current protection threshold.
953 SR_CONF_OVER_CURRENT_PROTECTION_ACTIVE,
956 * Over-current protection (OCP) threshold
957 * @arg type: double (current)
958 * @arg get: get current threshold
959 * @arg set: set new threshold
961 SR_CONF_OVER_CURRENT_PROTECTION_THRESHOLD,
963 /** Choice of clock edge for external clock ("r" or "f"). */
966 /** Amplitude of a source without strictly-defined MQ. */
971 * get: "CV", "CC" or "UR", denoting constant voltage, constant current
973 * "CC-" denotes a power supply in current sink mode (e.g. HP 66xxB).
974 * "" is used when there is no regulation, e.g. the output is disabled.
978 /** Over-temperature protection (OTP) */
979 SR_CONF_OVER_TEMPERATURE_PROTECTION,
981 /** Output frequency in Hz. */
982 SR_CONF_OUTPUT_FREQUENCY,
984 /** Output frequency target in Hz. */
985 SR_CONF_OUTPUT_FREQUENCY_TARGET,
987 /** Measured quantity. */
988 SR_CONF_MEASURED_QUANTITY,
990 /** Equivalent circuit model. */
991 SR_CONF_EQUIV_CIRCUIT_MODEL,
993 /** Over-temperature protection (OTP) active. */
994 SR_CONF_OVER_TEMPERATURE_PROTECTION_ACTIVE,
996 /** Under-voltage condition. */
997 SR_CONF_UNDER_VOLTAGE_CONDITION,
999 /** Under-voltage condition active. */
1000 SR_CONF_UNDER_VOLTAGE_CONDITION_ACTIVE,
1002 /** Trigger level. */
1003 SR_CONF_TRIGGER_LEVEL,
1005 /** Under-voltage condition threshold. */
1006 SR_CONF_UNDER_VOLTAGE_CONDITION_THRESHOLD,
1009 * Which external clock source to use if the device supports
1010 * multiple external clock channels.
1012 SR_CONF_EXTERNAL_CLOCK_SOURCE,
1014 /** Offset of a source without strictly-defined MQ. */
1017 /** The device supports setting a pattern for the logic trigger. */
1018 SR_CONF_TRIGGER_PATTERN,
1020 /** High resolution mode. */
1021 SR_CONF_HIGH_RESOLUTION,
1023 /** Peak detection. */
1024 SR_CONF_PEAK_DETECTION,
1026 /** Logic threshold: predefined levels (TTL, ECL, CMOS, etc). */
1027 SR_CONF_LOGIC_THRESHOLD,
1029 /** Logic threshold: custom numerical value. */
1030 SR_CONF_LOGIC_THRESHOLD_CUSTOM,
1032 /** The measurement range of a DMM or the output range of a power supply. */
1035 /** The number of digits (e.g. for a DMM). */
1038 /* Update sr_key_info_config[] (hwdriver.c) upon changes! */
1040 /*--- Special stuff -------------------------------------------------*/
1042 /** Session filename. */
1043 SR_CONF_SESSIONFILE = 40000,
1045 /** The device supports specifying a capturefile to inject. */
1046 SR_CONF_CAPTUREFILE,
1048 /** The device supports specifying the capturefile unit size. */
1049 SR_CONF_CAPTURE_UNITSIZE,
1051 /** Power off the device. */
1055 * Data source for acquisition. If not present, acquisition from
1056 * the device is always "live", i.e. acquisition starts when the
1057 * frontend asks and the results are sent out as soon as possible.
1059 * If present, it indicates that either the device has no live
1060 * acquisition capability (for example a pure data logger), or
1061 * there is a choice. sr_config_list() returns those choices.
1063 * In any case if a device has live acquisition capabilities, it
1064 * is always the default.
1066 SR_CONF_DATA_SOURCE,
1068 /** The device supports setting a probe factor. */
1069 SR_CONF_PROBE_FACTOR,
1071 /** Number of powerline cycles for ADC integration time. */
1072 SR_CONF_ADC_POWERLINE_CYCLES,
1074 /* Update sr_key_info_config[] (hwdriver.c) upon changes! */
1076 /*--- Acquisition modes, sample limiting ----------------------------*/
1079 * The device supports setting a sample time limit (how long
1080 * the sample acquisition should run, in ms).
1082 SR_CONF_LIMIT_MSEC = 50000,
1085 * The device supports setting a sample number limit (how many
1086 * samples should be acquired).
1088 SR_CONF_LIMIT_SAMPLES,
1091 * The device supports setting a frame limit (how many
1092 * frames should be acquired).
1094 SR_CONF_LIMIT_FRAMES,
1097 * The device supports continuous sampling. Neither a time limit
1098 * nor a sample number limit has to be supplied, it will just acquire
1099 * samples continuously, until explicitly stopped by a certain command.
1103 /** The device has internal storage, into which data is logged. This
1104 * starts or stops the internal logging. */
1107 /** Device mode for multi-function devices. */
1108 SR_CONF_DEVICE_MODE,
1110 /** Self test mode. */
1113 /* Update sr_key_info_config[] (hwdriver.c) upon changes! */
1117 * Opaque structure representing a libsigrok device instance.
1119 * None of the fields of this structure are meant to be accessed directly.
1123 /** Types of device instance, struct sr_dev_inst.type */
1124 enum sr_dev_inst_type {
1125 /** Device instance type for USB devices. */
1126 SR_INST_USB = 10000,
1127 /** Device instance type for serial port devices. */
1129 /** Device instance type for SCPI devices. */
1131 /** Device-instance type for user-created "devices". */
1133 /** Device instance type for Modbus devices. */
1137 /** Device instance status, struct sr_dev_inst.status */
1138 enum sr_dev_inst_status {
1139 /** The device instance was not found. */
1140 SR_ST_NOT_FOUND = 10000,
1141 /** The device instance was found, but is still booting. */
1143 /** The device instance is live, but not in use. */
1145 /** The device instance is actively in use in a session. */
1147 /** The device is winding down its session. */
1151 /** Device driver data. See also http://sigrok.org/wiki/Hardware_driver_API . */
1152 struct sr_dev_driver {
1153 /* Driver-specific */
1154 /** Driver name. Lowercase a-z, 0-9 and dashes (-) only. */
1156 /** Long name. Verbose driver name shown to user. */
1157 const char *longname;
1158 /** API version (currently 1). */
1160 /** Called when driver is loaded, e.g. program startup. */
1161 int (*init) (struct sr_dev_driver *driver, struct sr_context *sr_ctx);
1162 /** Called before driver is unloaded.
1163 * Driver must free all resources held by it. */
1164 int (*cleanup) (const struct sr_dev_driver *driver);
1165 /** Scan for devices. Driver should do all initialisation required.
1166 * Can be called several times, e.g. with different port options.
1167 * @retval NULL Error or no devices found.
1168 * @retval other GSList of a struct sr_dev_inst for each device.
1169 * Must be freed by caller!
1171 GSList *(*scan) (struct sr_dev_driver *driver, GSList *options);
1172 /** Get list of device instances the driver knows about.
1173 * @returns NULL or GSList of a struct sr_dev_inst for each device.
1174 * Must not be freed by caller!
1176 GSList *(*dev_list) (const struct sr_dev_driver *driver);
1177 /** Clear list of devices the driver knows about. */
1178 int (*dev_clear) (const struct sr_dev_driver *driver);
1179 /** Query value of a configuration key in driver or given device instance.
1180 * @see sr_config_get().
1182 int (*config_get) (uint32_t key, GVariant **data,
1183 const struct sr_dev_inst *sdi,
1184 const struct sr_channel_group *cg);
1185 /** Set value of a configuration key in driver or a given device instance.
1186 * @see sr_config_set(). */
1187 int (*config_set) (uint32_t key, GVariant *data,
1188 const struct sr_dev_inst *sdi,
1189 const struct sr_channel_group *cg);
1190 /** Channel status change.
1191 * @see sr_dev_channel_enable(). */
1192 int (*config_channel_set) (const struct sr_dev_inst *sdi,
1193 struct sr_channel *ch, unsigned int changes);
1194 /** Apply configuration settings to the device hardware.
1195 * @see sr_config_commit().*/
1196 int (*config_commit) (const struct sr_dev_inst *sdi);
1197 /** List all possible values for a configuration key in a device instance.
1198 * @see sr_config_list().
1200 int (*config_list) (uint32_t key, GVariant **data,
1201 const struct sr_dev_inst *sdi,
1202 const struct sr_channel_group *cg);
1204 /* Device-specific */
1206 int (*dev_open) (struct sr_dev_inst *sdi);
1208 int (*dev_close) (struct sr_dev_inst *sdi);
1209 /** Begin data acquisition on the specified device. */
1210 int (*dev_acquisition_start) (const struct sr_dev_inst *sdi);
1211 /** End data acquisition on the specified device. */
1212 int (*dev_acquisition_stop) (struct sr_dev_inst *sdi);
1215 /** Device driver context, considered private. Initialized by init(). */
1219 /** Serial port descriptor. */
1220 struct sr_serial_port {
1221 /** The OS dependent name of the serial port. */
1223 /** An end user friendly description for the serial port. */
1227 #include <libsigrok/proto.h>
1228 #include <libsigrok/version.h>