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_SIGROK_H
21 #define LIBSIGROK_SIGROK_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 needs to be open. */
75 SR_ERR_TIMEOUT = -8, /**< A timeout occurred. */
76 SR_ERR_PROBE_GROUP= -9, /**< A probe group must be specified. */
79 * Note: When adding entries here, don't forget to also update the
80 * sr_strerror() and sr_strerror_name() functions in error.c.
84 #define SR_MAX_PROBENAME_LEN 32
86 /* Handy little macros */
88 #define SR_KHZ(n) ((n) * (uint64_t)(1000ULL))
89 #define SR_MHZ(n) ((n) * (uint64_t)(1000000ULL))
90 #define SR_GHZ(n) ((n) * (uint64_t)(1000000000ULL))
92 #define SR_HZ_TO_NS(n) ((uint64_t)(1000000000ULL) / (n))
94 /** libsigrok loglevels. */
96 SR_LOG_NONE = 0, /**< Output no messages at all. */
97 SR_LOG_ERR = 1, /**< Output error messages. */
98 SR_LOG_WARN = 2, /**< Output warnings. */
99 SR_LOG_INFO = 3, /**< Output informational messages. */
100 SR_LOG_DBG = 4, /**< Output debug messages. */
101 SR_LOG_SPEW = 5, /**< Output very noisy debug messages. */
105 * Use SR_API to mark public API symbols, and SR_PRIV for private symbols.
107 * Variables and functions marked 'static' are private already and don't
108 * need SR_PRIV. However, functions which are not static (because they need
109 * to be used in other libsigrok-internal files) but are also not meant to
110 * be part of the public libsigrok API, must use SR_PRIV.
112 * This uses the 'visibility' feature of gcc (requires gcc >= 4.0).
114 * This feature is not available on MinGW/Windows, as it is a feature of
115 * ELF files and MinGW/Windows uses PE files.
117 * Details: http://gcc.gnu.org/wiki/Visibility
120 /* Marks public libsigrok API symbols. */
122 #define SR_API __attribute__((visibility("default")))
127 /* Marks private, non-public libsigrok symbols (not part of the API). */
129 #define SR_PRIV __attribute__((visibility("hidden")))
134 /** Type definition for callback function for data reception. */
135 typedef int (*sr_receive_data_callback_t)(int fd, int revents, void *cb_data);
137 /** Data types used by sr_config_info(). */
143 SR_T_RATIONAL_PERIOD,
150 /** Value for sr_datafeed_packet.type. */
152 SR_DF_HEADER = 10000, /**< Payload is sr_datafeed_header. */
153 SR_DF_END, /**< End of stream (no further data). */
154 SR_DF_META, /**< Payload is struct sr_datafeed_meta */
155 SR_DF_TRIGGER, /**< The trigger matched at this point in the data feed.
157 SR_DF_LOGIC, /**< Payload is struct sr_datafeed_logic. */
158 SR_DF_ANALOG, /**< Payload is struct sr_datafeed_analog. */
159 SR_DF_FRAME_BEGIN, /**< Beginning of frame. No payload. */
160 SR_DF_FRAME_END, /**< End of frame. No payload. */
163 /** Measured quantity, sr_datafeed_analog.mq. */
165 SR_MQ_VOLTAGE = 10000,
171 SR_MQ_DUTY_CYCLE, /**< Duty cycle, e.g. on/off ratio. */
172 SR_MQ_CONTINUITY, /**< Continuity test. */
175 SR_MQ_POWER, /**< Electrical power, usually in W, or dBm. */
176 SR_MQ_GAIN, /**< Gain (a transistor's gain, or hFE, for example). */
177 /** Logarithmic representation of sound pressure relative to a
178 * reference value. */
179 SR_MQ_SOUND_PRESSURE_LEVEL,
180 SR_MQ_CARBON_MONOXIDE, /**< Carbon monoxide level */
181 SR_MQ_RELATIVE_HUMIDITY,/**< Humidity */
182 SR_MQ_TIME, /**< Time */
185 /** Unit of measured quantity, sr_datafeed_analog.unit. */
187 SR_UNIT_VOLT = 10000, /**< Volt */
188 SR_UNIT_AMPERE, /**< Ampere (current). */
189 SR_UNIT_OHM, /**< Ohm (resistance). */
190 SR_UNIT_FARAD, /**< Farad (capacity). */
191 SR_UNIT_KELVIN, /**< Kelvin (temperature). */
192 SR_UNIT_CELSIUS, /**< Degrees Celsius (temperature). */
193 SR_UNIT_FAHRENHEIT, /**< Degrees Fahrenheit (temperature). */
194 SR_UNIT_HERTZ, /**< Hertz (frequency, 1/s, [Hz]). */
195 SR_UNIT_PERCENTAGE, /**< Percent value. */
196 SR_UNIT_BOOLEAN, /**< Boolean value. */
197 SR_UNIT_SECOND, /**< Time in seconds. */
198 SR_UNIT_SIEMENS, /**< Unit of conductance, the inverse of resistance. */
200 * An absolute measurement of power, in decibels, referenced to
204 /** Voltage in decibel, referenced to 1 volt (dBV). */
205 SR_UNIT_DECIBEL_VOLT,
207 * Measurements that intrinsically do not have units attached, such
208 * as ratios, gains, etc. Specifically, a transistor's gain (hFE) is
209 * a unitless quantity, for example.
212 /** Sound pressure level relative so 20 micropascals. */
215 * Normalized (0 to 1) concentration of a substance or compound with 0
216 * representing a concentration of 0%, and 1 being 100%. This is
217 * represented as the fraction of number of particles of the substance.
219 SR_UNIT_CONCENTRATION,
220 SR_UNIT_REVOLUTIONS_PER_MINUTE, /**< Revolutions per minute. */
221 SR_UNIT_VOLT_AMPERE, /**< Apparent power [VA]. */
222 SR_UNIT_WATT, /**< Real power [W]. */
223 SR_UNIT_WATT_HOUR, /**< Consumption [Wh]. */
226 /** Values for sr_datafeed_analog.flags. */
228 /** Voltage measurement is alternating current (AC). */
230 /** Voltage measurement is direct current (DC). */
232 /** This is a true RMS measurement. */
233 SR_MQFLAG_RMS = 0x04,
234 /** Value is voltage drop across a diode, or NAN. */
235 SR_MQFLAG_DIODE = 0x08,
236 /** Device is in "hold" mode (repeating the last measurement). */
237 SR_MQFLAG_HOLD = 0x10,
238 /** Device is in "max" mode, only updating upon a new max value. */
239 SR_MQFLAG_MAX = 0x20,
240 /** Device is in "min" mode, only updating upon a new min value. */
241 SR_MQFLAG_MIN = 0x40,
242 /** Device is in autoranging mode. */
243 SR_MQFLAG_AUTORANGE = 0x80,
244 /** Device is in relative mode. */
245 SR_MQFLAG_RELATIVE = 0x100,
246 /** Sound pressure level is A-weighted in the frequency domain,
247 * according to IEC 61672:2003. */
248 SR_MQFLAG_SPL_FREQ_WEIGHT_A = 0x200,
249 /** Sound pressure level is C-weighted in the frequency domain,
250 * according to IEC 61672:2003. */
251 SR_MQFLAG_SPL_FREQ_WEIGHT_C = 0x400,
252 /** Sound pressure level is Z-weighted (i.e. not at all) in the
253 * frequency domain, according to IEC 61672:2003. */
254 SR_MQFLAG_SPL_FREQ_WEIGHT_Z = 0x800,
255 /** Sound pressure level is not weighted in the frequency domain,
256 * albeit without standards-defined low and high frequency limits. */
257 SR_MQFLAG_SPL_FREQ_WEIGHT_FLAT = 0x1000,
258 /** Sound pressure level measurement is S-weighted (1s) in the
260 SR_MQFLAG_SPL_TIME_WEIGHT_S = 0x2000,
261 /** Sound pressure level measurement is F-weighted (125ms) in the
263 SR_MQFLAG_SPL_TIME_WEIGHT_F = 0x4000,
264 /** Sound pressure level is time-averaged (LAT), also known as
265 * Equivalent Continuous A-weighted Sound Level (LEQ). */
266 SR_MQFLAG_SPL_LAT = 0x8000,
267 /** Sound pressure level represented as a percentage of measurements
268 * that were over a preset alarm level. */
269 SR_MQFLAG_SPL_PCT_OVER_ALARM = 0x10000,
270 /** Time is duration (as opposed to epoch, ...). */
271 SR_MQFLAG_DURATION = 0x20000,
274 /** sigrok context (opaque). @see sr_init(), sr_exit(). */
277 /** Packet in a sigrok data feed. */
278 struct sr_datafeed_packet {
283 /** Header of a sigrok data feed. */
284 struct sr_datafeed_header {
286 struct timeval starttime;
289 /** Datafeed payload for type SR_DF_META. */
290 struct sr_datafeed_meta {
294 /** Logic datafeed payload for type SR_DF_LOGIC. */
295 struct sr_datafeed_logic {
301 /** Analog datafeed payload for type SR_DF_ANALOG. */
302 struct sr_datafeed_analog {
303 /** The probes for which data is included in this packet. */
305 int num_samples; /**< Number of samples in data */
306 /** Measured quantity (voltage, current, temperature, and so on).
307 * Use SR_MQ_VOLTAGE, ... */
309 /** Unit in which the MQ is measured. Use SR_UNIT_VOLT, ... */
311 /** Bitmap with extra information about the MQ. Use SR_MQFLAG_AC, ... */
313 /** The analog value(s). The data is interleaved according to
314 * the probes list. */
318 /** Input (file) format struct. */
321 * A pointer to this input format's 'struct sr_input_format'.
322 * The frontend can use this to call the module's callbacks.
324 struct sr_input_format *format;
328 struct sr_dev_inst *sdi;
333 /** Input (file) format driver. */
334 struct sr_input_format {
335 /** The unique ID for this input format. Must not be NULL. */
339 * A short description of the input format, which can (for example)
340 * be displayed to the user by frontends. Must not be NULL.
345 * Check if this input module can load and parse the specified file.
347 * @param[in] filename The name (and path) of the file to check.
349 * @retval TRUE This module knows the format.
350 * @retval FALSE This module does not know the format.
352 int (*format_match) (const char *filename);
355 * Initialize the input module.
357 * @param in A pointer to a valid 'struct sr_input' that the caller
358 * has to allocate and provide to this function. It is also
359 * the responsibility of the caller to free it later.
360 * @param[in] filename The name (and path) of the file to use.
362 * @retval SR_OK Success
363 * @retval other Negative error code.
365 int (*init) (struct sr_input *in, const char *filename);
368 * Load a file, parsing the input according to the file's format.
370 * This function will send datafeed packets to the session bus, so
371 * the calling frontend must have registered its session callbacks
374 * The packet types sent across the session bus by this function must
375 * include at least SR_DF_HEADER, SR_DF_END, and an appropriate data
376 * type such as SR_DF_LOGIC. It may also send a SR_DF_TRIGGER packet
379 * @param in A pointer to a valid 'struct sr_input' that the caller
380 * has to allocate and provide to this function. It is also
381 * the responsibility of the caller to free it later.
382 * @param filename The name (and path) of the file to use.
384 * @retval SR_OK Success
385 * @retval other Negative error code.
387 int (*loadfile) (struct sr_input *in, const char *filename);
390 /** Output (file) format struct. */
393 * A pointer to this output format's 'struct sr_output_format'.
394 * The frontend can use this to call the module's callbacks.
396 struct sr_output_format *format;
399 * The device for which this output module is creating output. This
400 * can be used by the module to find out probe names and numbers.
402 struct sr_dev_inst *sdi;
405 * An optional parameter which the frontend can pass in to the
406 * output module. How the string is interpreted is entirely up to
412 * A generic pointer which can be used by the module to keep internal
413 * state between calls into its callback functions.
415 * For example, the module might store a pointer to a chunk of output
416 * there, and only flush it when it reaches a certain size.
421 /** Output (file) format driver. */
422 struct sr_output_format {
424 * A unique ID for this output format. Must not be NULL.
426 * It can be used by frontends to select this output format for use.
428 * For example, calling sigrok-cli with <code>-O hex</code> will
429 * select the hexadecimal text output format.
434 * A short description of the output format. Must not be NULL.
436 * This can be displayed by frontends, e.g. when selecting the output
437 * format for saving a file.
441 int df_type; /**< Datafeed type, SR_DF_HEADER, etc. */
444 * This function is called once, at the beginning of an output stream.
446 * The device struct will be available in the output struct passed in,
447 * as well as the param field -- which may be NULL or an empty string,
448 * if no parameter was passed.
450 * The module can use this to initialize itself, create a struct for
451 * keeping state and storing it in the <code>internal</code> field.
453 * @param o Pointer to the respective 'struct sr_output'.
455 * @retval SR_OK Success
456 * @retval other Negative error code.
458 int (*init) (struct sr_output *o);
461 * Whenever a chunk of data comes in, it will be passed to the
462 * output module via this function. The <code>data_in</code> and
463 * <code>length_in</code> values refers to this data; the module
464 * must not alter or g_free() this buffer.
466 * The function must allocate a buffer for storing its output, and
467 * pass along a pointer to this buffer in the <code>data_out</code>
468 * parameter, as well as storing the length of the buffer in
469 * <code>length_out</code>. The calling frontend will g_free()
470 * this buffer when it's done with it.
472 * IMPORTANT: The memory allocation much happen using a glib memory
473 * allocation call (not a "normal" malloc) since g_free() will be
474 * used to free the memory!
476 * If there is no output, this function MUST store NULL in the
477 * <code>data_out</code> parameter, so the caller knows not to try
480 * Note: This API call is obsolete, use receive() instead.
482 * @param o Pointer to the respective 'struct sr_output'.
483 * @param data_in Pointer to the input data buffer.
484 * @param length_in Length of the input.
485 * @param data_out Pointer to the allocated output buffer.
486 * @param length_out Length (in bytes) of the output.
488 * @retval SR_OK Success
489 * @retval other Negative error code.
491 int (*data) (struct sr_output *o, const uint8_t *data_in,
492 uint64_t length_in, uint8_t **data_out,
493 uint64_t *length_out);
496 * This function is called when an event occurs in the datafeed
497 * which the output module may need to be aware of. No data is
498 * passed in, only the fact that the event occurs. The following
499 * events can currently be passed in:
501 * - SR_DF_TRIGGER: At this point in the datafeed, the trigger
502 * matched. The output module may mark this in some way, e.g. by
503 * plotting a red line on a graph.
505 * - SR_DF_END: This marks the end of the datafeed. No more calls
506 * into the output module will be done, so this is a good time to
507 * free up any memory used to keep state, for example.
509 * Any output generated by this function must have a reference to
510 * it stored in the <code>data_out</code> and <code>length_out</code>
511 * parameters, or NULL if no output was generated.
513 * Note: This API call is obsolete, use receive() instead.
515 * @param o Pointer to the respective 'struct sr_output'.
516 * @param event_type Type of event that occured.
517 * @param data_out Pointer to the allocated output buffer.
518 * @param length_out Length (in bytes) of the output.
520 * @retval SR_OK Success
521 * @retval other Negative error code.
523 int (*event) (struct sr_output *o, int event_type, uint8_t **data_out,
524 uint64_t *length_out);
527 * This function is passed a copy of every packed in the data feed.
528 * Any output generated by the output module in response to the
529 * packet should be returned in a newly allocated GString
530 * <code>out</code>, which will be freed by the caller.
532 * Packets not of interest to the output module can just be ignored,
533 * and the <code>out</code> parameter set to NULL.
535 * @param o Pointer to the respective 'struct sr_output'.
536 * @param sdi The device instance that generated the packet.
537 * @param packet The complete packet.
538 * @param out A pointer where a GString * should be stored if
539 * the module generates output, or NULL if not.
541 * @retval SR_OK Success
542 * @retval other Negative error code.
544 int (*receive) (struct sr_output *o, const struct sr_dev_inst *sdi,
545 const struct sr_datafeed_packet *packet, GString **out);
548 * This function is called after the caller is finished using
549 * the output module, and can be used to free any internal
550 * resources the module may keep.
552 * @retval SR_OK Success
553 * @retval other Negative error code.
555 int (*cleanup) (struct sr_output *o);
558 /** Constants for probe type. */
560 SR_PROBE_LOGIC = 10000, /**< Probe type is logic probe. */
561 SR_PROBE_ANALOG, /**< Probe type is analog probe. */
564 /** Information on single probe. */
566 int index; /**< Number of probe, starting at 0. @deprecated The
567 index field will go: use g_slist_length(sdi->probes) instead. */
568 int type; /**< Probe type (SR_PROBE_LOGIC, ...) */
569 gboolean enabled; /**< Is this probe enabled? */
570 char *name;/**< Name of probe. */
571 char *trigger;/**< Trigger string, format like used by sigrok-cli */
574 /** Structure for groups of probes that have common properties. */
575 struct sr_probe_group {
576 /** Name of the probe group. */
578 /** List of sr_probe structs of the probes belonging to this group. */
580 /** Private data for driver use. */
584 /** Used for setting or getting value of a config item. */
586 int key; /**< Config key like SR_CONF_CONN, etc. */
587 GVariant *data; /**< Key-specific data. */
590 /** Information about a config key. */
591 struct sr_config_info {
592 int key; /**< Config key like SR_CONF_CONN, etc. */
593 int datatype; /**< Data type like SR_T_CHAR, etc. */
594 char *id; /**< Id string, e.g. "serialcomm". */
595 char *name; /**< Name, e.g. "Serial communication". */
596 char *description; /**< Verbose description (unused currently). */
599 /** Constants for device classes */
601 /*--- Device classes ------------------------------------------------*/
603 /** The device can act as logic analyzer. */
604 SR_CONF_LOGIC_ANALYZER = 10000,
606 /** The device can act as an oscilloscope. */
607 SR_CONF_OSCILLOSCOPE,
609 /** The device can act as a multimeter. */
612 /** The device is a demo device. */
615 /** The device can act as a sound level meter. */
616 SR_CONF_SOUNDLEVELMETER,
618 /** The device can measure temperature. */
621 /** The device can measure humidity. */
624 /** The device can measure energy consumption. */
627 /*--- Driver scan options -------------------------------------------*/
630 * Specification on how to connect to a device.
632 * In combination with SR_CONF_SERIALCOMM, this is a serial port in
633 * the form which makes sense to the OS (e.g., /dev/ttyS0).
634 * Otherwise this specifies a USB device, either in the form of
635 * @verbatim <bus>.<address> @endverbatim (decimal, e.g. 1.65) or
636 * @verbatim <vendorid>.<productid> @endverbatim
637 * (hexadecimal, e.g. 1d6b.0001).
639 SR_CONF_CONN = 20000,
642 * Serial communication specification, in the form:
644 * @verbatim <baudrate>/<databits><parity><stopbits> @endverbatim
648 * The string may also be followed by one or more special settings,
649 * in the form "/key=value". Supported keys and their values are:
651 * rts 0,1 set the port's RTS pin to low or high
652 * dtr 0,1 set the port's DTR pin to low or high
653 * flow 0 no flow control
654 * 1 hardware-based (RTS/CTS) flow control
655 * 2 software-based (XON/XOFF) flow control
657 * This is always an optional parameter, since a driver typically
658 * knows the speed at which the device wants to communicate.
662 /*--- Device configuration ------------------------------------------*/
664 /** The device supports setting its samplerate, in Hz. */
665 SR_CONF_SAMPLERATE = 30000,
667 /** The device supports setting a pre/post-trigger capture ratio. */
668 SR_CONF_CAPTURE_RATIO,
670 /** The device supports setting a pattern (pattern generator mode). */
671 SR_CONF_PATTERN_MODE,
673 /** The device supports Run Length Encoding. */
676 /** The device supports setting trigger slope. */
677 SR_CONF_TRIGGER_SLOPE,
679 /** Trigger source. */
680 SR_CONF_TRIGGER_SOURCE,
682 /** Horizontal trigger position. */
683 SR_CONF_HORIZ_TRIGGERPOS,
700 /** Trigger types. */
701 SR_CONF_TRIGGER_TYPE,
703 /** The device supports setting its sample interval, in ms. */
704 SR_CONF_SAMPLE_INTERVAL,
706 /** Number of timebases, as related to SR_CONF_TIMEBASE. */
707 SR_CONF_NUM_TIMEBASE,
709 /** Number of vertical divisions, as related to SR_CONF_VDIV. */
712 /** Sound pressure level frequency weighting. */
713 SR_CONF_SPL_WEIGHT_FREQ,
715 /** Sound pressure level time weighting. */
716 SR_CONF_SPL_WEIGHT_TIME,
718 /** Sound pressure level measurement range. */
719 SR_CONF_SPL_MEASUREMENT_RANGE,
721 /** Max hold mode. */
724 /** Min hold mode. */
727 /** Logic low-high threshold range. */
728 SR_CONF_VOLTAGE_THRESHOLD,
730 /** The device supports using a external clock. */
731 SR_CONF_EXTERNAL_CLOCK,
734 * The device supports swapping channels. Typical this is between
735 * buffered and unbuffered channels.
739 /*--- Special stuff -------------------------------------------------*/
741 /** Scan options supported by the driver. */
742 SR_CONF_SCAN_OPTIONS = 40000,
744 /** Device options for a particular device. */
745 SR_CONF_DEVICE_OPTIONS,
747 /** Session filename. */
750 /** The device supports specifying a capturefile to inject. */
753 /** The device supports specifying the capturefile unit size. */
754 SR_CONF_CAPTURE_UNITSIZE,
756 /** The device supports setting the number of probes. */
757 SR_CONF_CAPTURE_NUM_PROBES,
759 /** Power off the device. */
762 /** Data source for acquisition. If not present, acquisition from
763 * the device is always "live", i.e. acquisition starts when the
764 * frontend asks and the results are sent out as soon as possible.
766 * If present, it indicates that either the device has no live
767 * acquisition capability (for example a pure data logger), or
768 * there is a choice. sr_config_list() returns those choices.
770 * In any case if a device has live acquisition capabilities, it
771 * is always the default. */
774 /*--- Acquisition modes ---------------------------------------------*/
777 * The device supports setting a sample time limit (how long
778 * the sample acquisition should run, in ms).
780 SR_CONF_LIMIT_MSEC = 50000,
783 * The device supports setting a sample number limit (how many
784 * samples should be acquired).
786 SR_CONF_LIMIT_SAMPLES,
789 * The device supports setting a frame limit (how many
790 * frames should be acquired).
792 SR_CONF_LIMIT_FRAMES,
795 * The device supports continuous sampling. Neither a time limit
796 * nor a sample number limit has to be supplied, it will just acquire
797 * samples continuously, until explicitly stopped by a certain command.
801 /** The device has internal storage, into which data is logged. This
802 * starts or stops the internal logging. */
807 * Device instance data
810 struct sr_dev_driver *driver; /**< Device driver. */
811 int index; /**< Index of device in driver. */
812 int status; /**< Device instance status. SR_ST_NOT_FOUND, etc. */
813 int inst_type; /**< Device instance type. SR_INST_USB, etc. */
814 char *vendor; /**< Device vendor. */
815 char *model; /**< Device model. */
816 char *version; /**< Device version. */
817 GSList *probes; /**< List of probes. */
818 GSList *probe_groups; /**< List of sr_probe_group structs */
819 void *conn; /**< Device instance connection data (used?) */
820 void *priv; /**< Device instance private data (used?) */
823 /** Types of device instance, struct sr_dev_inst.type */
825 /** Device instance type for USB devices. */
827 /** Device instance type for serial port devices. */
829 /** Device instance type for SCPI devices. */
833 /** Device instance status, struct sr_dev_inst.status */
835 /** The device instance was not found. */
836 SR_ST_NOT_FOUND = 10000,
837 /** The device instance was found, but is still booting. */
839 /** The device instance is live, but not in use. */
841 /** The device instance is actively in use in a session. */
843 /** The device is winding down its session. */
847 /** Device driver data */
848 struct sr_dev_driver {
849 /* Driver-specific */
850 char *name; /**< Driver name */
851 char *longname; /**< Long name, e.g. device name. */
852 int api_version; /**< API version (currently 1). */
853 int (*init) (struct sr_context *sr_ctx); /**< Init driver */
854 int (*cleanup) (void); /**< Free driver */
855 GSList *(*scan) (GSList *options); /**< Scan for devices */
856 GSList *(*dev_list) (void); /**< Get device list */
857 int (*dev_clear) (void);
858 int (*config_get) (int id, GVariant **data,
859 const struct sr_dev_inst *sdi,
860 const struct sr_probe_group *probe_group);
861 int (*config_set) (int id, GVariant *data,
862 const struct sr_dev_inst *sdi,
863 const struct sr_probe_group *probe_group);
864 int (*config_list) (int info_id, GVariant **data,
865 const struct sr_dev_inst *sdi,
866 const struct sr_probe_group *probe_group);
868 /* Device-specific */
869 int (*dev_open) (struct sr_dev_inst *sdi); /**< Open device */
870 int (*dev_close) (struct sr_dev_inst *sdi); /**< Close device */
871 int (*dev_acquisition_start) (const struct sr_dev_inst *sdi,
872 void *cb_data); /**< Start data aquisition. */
873 int (*dev_acquisition_stop) (struct sr_dev_inst *sdi,
874 void *cb_data); /**< Stop data aquisition. */
877 void *priv; /**< Device driver private data */
881 * Opaque data structure representing a libsigrok session. None of the fields
882 * of this structure are meant to be accessed directly.