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
31 #define _WIN32_WINNT WINVER
44 * The public libsigrok header file to be used by frontends.
46 * This is the only file that libsigrok users (frontends) are supposed to
47 * use and \#include. There are other header files which get installed with
48 * libsigrok, but those are not meant to be used directly by frontends.
50 * The correct way to get/use the libsigrok API functions is:
53 * #include <libsigrok/libsigrok.h>
58 * All possible return codes of libsigrok functions must be listed here.
59 * Functions should never return hardcoded numbers as status, but rather
60 * use these enum values. All error codes are negative numbers.
62 * The error codes are globally unique in libsigrok, i.e. if one of the
63 * libsigrok functions returns a "malloc error" it must be exactly the same
64 * return value as used by all other functions to indicate "malloc error".
65 * There must be no functions which indicate two different errors via the
68 * Also, for compatibility reasons, no defined return codes are ever removed
69 * or reused for different errors later. You can only add new entries and
70 * return codes, but never remove or redefine existing ones.
73 /** Status/error codes returned by libsigrok functions. */
75 SR_OK = 0, /**< No error. */
76 SR_ERR = -1, /**< Generic/unspecified error. */
77 SR_ERR_MALLOC = -2, /**< Malloc/calloc/realloc error. */
78 SR_ERR_ARG = -3, /**< Function argument error. */
79 SR_ERR_BUG = -4, /**< Errors hinting at internal bugs. */
80 SR_ERR_SAMPLERATE = -5, /**< Incorrect samplerate. */
81 SR_ERR_NA = -6, /**< Not applicable. */
82 SR_ERR_DEV_CLOSED = -7, /**< Device is closed, but needs to be open. */
85 * Note: When adding entries here, don't forget to also update the
86 * sr_strerror() and sr_strerror_name() functions in error.c.
90 #define SR_MAX_PROBENAME_LEN 32
91 #define DS_MAX_ANALOG_PROBES_NUM 8
92 #define TriggerStages 16
93 #define TriggerProbes 16
94 #define TriggerCountBits 16
96 /* Handy little macros */
98 #define SR_KHZ(n) ((n) * (uint64_t)(1000ULL))
99 #define SR_MHZ(n) ((n) * (uint64_t)(1000000ULL))
100 #define SR_GHZ(n) ((n) * (uint64_t)(1000000000ULL))
102 #define SR_HZ_TO_NS(n) ((uint64_t)(1000000000ULL) / (n))
104 /** libsigrok loglevels. */
106 SR_LOG_NONE = 0, /**< Output no messages at all. */
107 SR_LOG_ERR = 1, /**< Output error messages. */
108 SR_LOG_WARN = 2, /**< Output warnings. */
109 SR_LOG_INFO = 3, /**< Output informational messages. */
110 SR_LOG_DBG = 4, /**< Output debug messages. */
111 SR_LOG_SPEW = 5, /**< Output very noisy debug messages. */
115 * Use SR_API to mark public API symbols, and SR_PRIV for private symbols.
117 * Variables and functions marked 'static' are private already and don't
118 * need SR_PRIV. However, functions which are not static (because they need
119 * to be used in other libsigrok-internal files) but are also not meant to
120 * be part of the public libsigrok API, must use SR_PRIV.
122 * This uses the 'visibility' feature of gcc (requires gcc >= 4.0).
124 * This feature is not available on MinGW/Windows, as it is a feature of
125 * ELF files and MinGW/Windows uses PE files.
127 * Details: http://gcc.gnu.org/wiki/Visibility
130 /* Marks public libsigrok API symbols. */
132 #define SR_API __attribute__((visibility("default")))
137 /* Marks private, non-public libsigrok symbols (not part of the API). */
139 #define SR_PRIV __attribute__((visibility("hidden")))
144 typedef int (*sr_receive_data_callback_t)(int fd, int revents, const struct sr_dev_inst *sdi);
146 /** Data types used by sr_config_info(). */
152 SR_T_RATIONAL_PERIOD,
157 /** Value for sr_datafeed_packet.type. */
159 SR_DF_HEADER = 10000,
169 /** Values for sr_datafeed_analog.mq. */
171 SR_MQ_VOLTAGE = 10000,
181 /** Electrical power, usually in W, or dBm. */
183 /** Gain (a transistor's gain, or hFE, for example). */
185 /** Logarithmic representation of sound pressure relative to a
186 * reference value. */
187 SR_MQ_SOUND_PRESSURE_LEVEL,
188 SR_MQ_CARBON_MONOXIDE,
189 SR_MQ_RELATIVE_HUMIDITY,
192 /** Values for sr_datafeed_analog.unit. */
194 SR_UNIT_VOLT = 10000,
205 /** Unit of conductance, the inverse of resistance. */
208 * An absolute measurement of power, in decibels, referenced to
212 /** Voltage in decibel, referenced to 1 volt (dBV). */
213 SR_UNIT_DECIBEL_VOLT,
215 * Measurements that intrinsically do not have units attached, such
216 * as ratios, gains, etc. Specifically, a transistor's gain (hFE) is
217 * a unitless quantity, for example.
220 /** Sound pressure level relative so 20 micropascals. */
223 * Normalized (0 to 1) concentration of a substance or compound with 0
224 * representing a concentration of 0%, and 1 being 100%. This is
225 * represented as the fraction of number of particles of the substance.
227 SR_UNIT_CONCENTRATION,
230 /** Values for sr_datafeed_analog.flags. */
232 /** Voltage measurement is alternating current (AC). */
234 /** Voltage measurement is direct current (DC). */
236 /** This is a true RMS measurement. */
237 SR_MQFLAG_RMS = 0x04,
238 /** Value is voltage drop across a diode, or NAN. */
239 SR_MQFLAG_DIODE = 0x08,
240 /** Device is in "hold" mode (repeating the last measurement). */
241 SR_MQFLAG_HOLD = 0x10,
242 /** Device is in "max" mode, only updating upon a new max value. */
243 SR_MQFLAG_MAX = 0x20,
244 /** Device is in "min" mode, only updating upon a new min value. */
245 SR_MQFLAG_MIN = 0x40,
246 /** Device is in autoranging mode. */
247 SR_MQFLAG_AUTORANGE = 0x80,
248 /** Device is in relative mode. */
249 SR_MQFLAG_RELATIVE = 0x100,
250 /** Sound pressure level is A-weighted in the frequency domain,
251 * according to IEC 61672:2003. */
252 SR_MQFLAG_SPL_FREQ_WEIGHT_A = 0x200,
253 /** Sound pressure level is C-weighted in the frequency domain,
254 * according to IEC 61672:2003. */
255 SR_MQFLAG_SPL_FREQ_WEIGHT_C = 0x400,
256 /** Sound pressure level is Z-weighted (i.e. not at all) in the
257 * frequency domain, according to IEC 61672:2003. */
258 SR_MQFLAG_SPL_FREQ_WEIGHT_Z = 0x800,
259 /** Sound pressure level is not weighted in the frequency domain,
260 * albeit without standards-defined low and high frequency limits. */
261 SR_MQFLAG_SPL_FREQ_WEIGHT_FLAT = 0x1000,
262 /** Sound pressure level measurement is S-weighted (1s) in the
264 SR_MQFLAG_SPL_TIME_WEIGHT_S = 0x2000,
265 /** Sound pressure level measurement is F-weighted (125ms) in the
267 SR_MQFLAG_SPL_TIME_WEIGHT_F = 0x4000,
268 /** Sound pressure level is time-averaged (LAT), also known as
269 * Equivalent Continuous A-weighted Sound Level (LEQ). */
270 SR_MQFLAG_SPL_LAT = 0x8000,
271 /** Sound pressure level represented as a percentage of measurements
272 * that were over a preset alarm level. */
273 SR_MQFLAG_SPL_PCT_OVER_ALARM = 0x10000,
278 struct sr_datafeed_packet {
283 struct sr_datafeed_header {
285 struct timeval starttime;
288 struct sr_datafeed_meta {
292 struct sr_datafeed_logic {
299 struct sr_datafeed_trigger {
303 struct sr_datafeed_analog {
304 /** The probes for which data is included in this packet. */
307 /** Measured quantity (voltage, current, temperature, and so on). */
309 /** Unit in which the MQ is measured. */
311 /** Bitmap with extra information about the MQ. */
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 struct sr_input_format {
334 /** The unique ID for this input format. Must not be NULL. */
338 * A short description of the input format, which can (for example)
339 * be displayed to the user by frontends. Must not be NULL.
344 * Check if this input module can load and parse the specified file.
346 * @param filename The name (and path) of the file to check.
348 * @return TRUE if this module knows the format, FALSE if it doesn't.
350 int (*format_match) (const char *filename);
353 * Initialize the input module.
355 * @param in A pointer to a valid 'struct sr_input' that the caller
356 * has to allocate and provide to this function. It is also
357 * the responsibility of the caller to free it later.
358 * @param filename The name (and path) of the file to use.
360 * @return SR_OK upon success, a negative error code upon failure.
362 int (*init) (struct sr_input *in, const char *filename);
365 * Load a file, parsing the input according to the file's format.
367 * This function will send datafeed packets to the session bus, so
368 * the calling frontend must have registered its session callbacks
371 * The packet types sent across the session bus by this function must
372 * include at least SR_DF_HEADER, SR_DF_END, and an appropriate data
373 * type such as SR_DF_LOGIC. It may also send a SR_DF_TRIGGER packet
376 * @param in A pointer to a valid 'struct sr_input' that the caller
377 * has to allocate and provide to this function. It is also
378 * the responsibility of the caller to free it later.
379 * @param filename The name (and path) of the file to use.
381 * @return SR_OK upon success, a negative error code upon failure.
383 int (*loadfile) (struct sr_input *in, const char *filename);
386 /** Output (file) format struct. */
389 * A pointer to this output format's 'struct sr_output_format'.
390 * The frontend can use this to call the module's callbacks.
392 struct sr_output_format *format;
395 * The device for which this output module is creating output. This
396 * can be used by the module to find out probe names and numbers.
398 struct sr_dev_inst *sdi;
401 * An optional parameter which the frontend can pass in to the
402 * output module. How the string is interpreted is entirely up to
408 * A generic pointer which can be used by the module to keep internal
409 * state between calls into its callback functions.
411 * For example, the module might store a pointer to a chunk of output
412 * there, and only flush it when it reaches a certain size.
417 struct sr_output_format {
419 * A unique ID for this output format. Must not be NULL.
421 * It can be used by frontends to select this output format for use.
423 * For example, calling sigrok-cli with <code>-O hex</code> will
424 * select the hexadecimal text output format.
429 * A short description of the output format. Must not be NULL.
431 * This can be displayed by frontends, e.g. when selecting the output
432 * format for saving a file.
439 * This function is called once, at the beginning of an output stream.
441 * The device struct will be available in the output struct passed in,
442 * as well as the param field -- which may be NULL or an empty string,
443 * if no parameter was passed.
445 * The module can use this to initialize itself, create a struct for
446 * keeping state and storing it in the <code>internal</code> field.
448 * @param o Pointer to the respective 'struct sr_output'.
450 * @return SR_OK upon success, a negative error code otherwise.
452 int (*init) (struct sr_output *o);
455 * Whenever a chunk of data comes in, it will be passed to the
456 * output module via this function. The <code>data_in</code> and
457 * <code>length_in</code> values refers to this data; the module
458 * must not alter or g_free() this buffer.
460 * The function must allocate a buffer for storing its output, and
461 * pass along a pointer to this buffer in the <code>data_out</code>
462 * parameter, as well as storing the length of the buffer in
463 * <code>length_out</code>. The calling frontend will g_free()
464 * this buffer when it's done with it.
466 * IMPORTANT: The memory allocation much happen using a glib memory
467 * allocation call (not a "normal" malloc) since g_free() will be
468 * used to free the memory!
470 * If there is no output, this function MUST store NULL in the
471 * <code>data_out</code> parameter, so the caller knows not to try
474 * Note: This API call is obsolete, use receive() instead.
476 * @param o Pointer to the respective 'struct sr_output'.
477 * @param data_in Pointer to the input data buffer.
478 * @param length_in Length of the input.
479 * @param data_out Pointer to the allocated output buffer.
480 * @param length_out Length (in bytes) of the output.
482 * @return SR_OK upon success, a negative error code otherwise.
484 int (*data) (struct sr_output *o, const uint8_t *data_in,
485 uint64_t length_in, uint8_t **data_out,
486 uint64_t *length_out);
489 * This function is called when an event occurs in the datafeed
490 * which the output module may need to be aware of. No data is
491 * passed in, only the fact that the event occurs. The following
492 * events can currently be passed in:
494 * - SR_DF_TRIGGER: At this point in the datafeed, the trigger
495 * matched. The output module may mark this in some way, e.g. by
496 * plotting a red line on a graph.
498 * - SR_DF_END: This marks the end of the datafeed. No more calls
499 * into the output module will be done, so this is a good time to
500 * free up any memory used to keep state, for example.
502 * Any output generated by this function must have a reference to
503 * it stored in the <code>data_out</code> and <code>length_out</code>
504 * parameters, or NULL if no output was generated.
506 * Note: This API call is obsolete, use receive() instead.
508 * @param o Pointer to the respective 'struct sr_output'.
509 * @param event_type Type of event that occured.
510 * @param data_out Pointer to the allocated output buffer.
511 * @param length_out Length (in bytes) of the output.
513 * @return SR_OK upon success, a negative error code otherwise.
515 int (*event) (struct sr_output *o, int event_type, uint8_t **data_out,
516 uint64_t *length_out);
519 * This function is passed a copy of every packed in the data feed.
520 * Any output generated by the output module in response to the
521 * packet should be returned in a newly allocated GString
522 * <code>out</code>, which will be freed by the caller.
524 * Packets not of interest to the output module can just be ignored,
525 * and the <code>out</code> parameter set to NULL.
527 * @param o Pointer to the respective 'struct sr_output'.
528 * @param sdi The device instance that generated the packet.
529 * @param packet The complete packet.
530 * @param out A pointer where a GString * should be stored if
531 * the module generates output, or NULL if not.
533 * @return SR_OK upon success, a negative error code otherwise.
535 int (*receive) (struct sr_output *o, const struct sr_dev_inst *sdi,
536 const struct sr_datafeed_packet *packet, GString **out);
539 * This function is called after the caller is finished using
540 * the output module, and can be used to free any internal
541 * resources the module may keep.
543 * @return SR_OK upon success, a negative error code otherwise.
545 int (*cleanup) (struct sr_output *o);
549 SR_PROBE_LOGIC = 10000,
558 static const char *mode_strings[] = {
564 /* The index field will go: use g_slist_length(sdi->probes) instead. */
577 struct sr_config_info {
586 /*--- Device classes ------------------------------------------------*/
588 /** The device can act as logic analyzer. */
589 SR_CONF_LOGIC_ANALYZER = 10000,
591 /** The device can act as an oscilloscope. */
592 SR_CONF_OSCILLOSCOPE,
594 /** The device can act as a multimeter. */
597 /** The device is a demo device. */
600 /** The device can act as a sound level meter. */
601 SR_CONF_SOUNDLEVELMETER,
603 /** The device can measure temperature. */
606 /** The device can measure humidity. */
609 /*--- Driver scan options -------------------------------------------*/
612 * Specification on how to connect to a device.
614 * In combination with SR_CONF_SERIALCOMM, this is a serial port in
615 * the form which makes sense to the OS (e.g., /dev/ttyS0).
616 * Otherwise this specifies a USB device, either in the form of
617 * @verbatim <bus>.<address> @endverbatim (decimal, e.g. 1.65) or
618 * @verbatim <vendorid>.<productid> @endverbatim
619 * (hexadecimal, e.g. 1d6b.0001).
621 SR_CONF_CONN = 20000,
624 * Serial communication specification, in the form:
626 * @verbatim <baudrate>/<databits><parity><stopbits> @endverbatim
630 * The string may also be followed by one or more special settings,
631 * in the form "/key=value". Supported keys and their values are:
633 * rts 0,1 set the port's RTS pin to low or high
634 * dtr 0,1 set the port's DTR pin to low or high
635 * flow 0 no flow control
636 * 1 hardware-based (RTS/CTS) flow control
637 * 2 software-based (XON/XOFF) flow control
639 * This is always an optional parameter, since a driver typically
640 * knows the speed at which the device wants to communicate.
644 /*--- Device configuration ------------------------------------------*/
646 /** The device supports setting its samplerate, in Hz. */
647 SR_CONF_SAMPLERATE = 30000,
649 /** The device supports setting a pre/post-trigger capture ratio. */
650 SR_CONF_CAPTURE_RATIO,
655 /** The device supports setting a pattern (pattern generator mode). */
656 SR_CONF_PATTERN_MODE,
658 /** The device supports Run Length Encoding. */
661 /** The device supports setting trigger slope. */
662 SR_CONF_TRIGGER_SLOPE,
664 /** Trigger source. */
665 SR_CONF_TRIGGER_SOURCE,
667 /** Horizontal trigger position. */
668 SR_CONF_HORIZ_TRIGGERPOS,
685 /** Trigger types. */
686 SR_CONF_TRIGGER_TYPE,
688 /** The device supports setting its sample interval, in ms. */
689 SR_CONF_SAMPLE_INTERVAL,
691 /** Number of timebases, as related to SR_CONF_TIMEBASE. */
692 SR_CONF_NUM_TIMEBASE,
694 /** Number of vertical divisions, as related to SR_CONF_VDIV. */
697 /** clock type (internal/external) */
700 /*--- Special stuff -------------------------------------------------*/
702 /** Scan options supported by the driver. */
703 SR_CONF_SCAN_OPTIONS = 40000,
705 /** Device options for a particular device. */
706 SR_CONF_DEVICE_OPTIONS,
707 SR_CONF_DEVICE_CONFIGS,
709 /** Session filename. */
712 /** The device supports specifying a capturefile to inject. */
715 /** The device supports specifying the capturefile unit size. */
716 SR_CONF_CAPTURE_UNITSIZE,
718 /** The device supports setting the number of probes. */
719 SR_CONF_CAPTURE_NUM_PROBES,
721 /*--- Acquisition modes ---------------------------------------------*/
724 * The device supports setting a sample time limit (how long
725 * the sample acquisition should run, in ms).
727 SR_CONF_LIMIT_MSEC = 50000,
730 * The device supports setting a sample number limit (how many
731 * samples should be acquired).
733 SR_CONF_LIMIT_SAMPLES,
736 * The device supports setting a frame limit (how many
737 * frames should be acquired).
739 SR_CONF_LIMIT_FRAMES,
742 * The device supports continuous sampling. Neither a time limit
743 * nor a sample number limit has to be supplied, it will just acquire
744 * samples continuously, until explicitly stopped by a certain command.
748 /** The device has internal storage, into which data is logged. This
749 * starts or stops the internal logging. */
754 struct sr_dev_driver *driver;
767 /** Types of device instances (sr_dev_inst). */
769 /** Device instance type for USB devices. */
771 /** Device instance type for serial port devices. */
775 /** Device instance status. */
777 /** The device instance was not found. */
778 SR_ST_NOT_FOUND = 10000,
779 /** The device instance was found, but is still booting. */
781 /** The device instance is live, but not in use. */
783 /** The device instance is actively in use in a session. */
785 /** The device is winding down its session. */
789 struct sr_dev_driver {
790 /* Driver-specific */
794 int (*init) (struct sr_context *sr_ctx);
795 int (*cleanup) (void);
796 GSList *(*scan) (GSList *options);
797 GSList *(*dev_list) (void);
798 int (*dev_clear) (void);
799 int (*config_get) (int id, GVariant **data,
800 const struct sr_dev_inst *sdi);
801 int (*config_set) (int id, GVariant *data,
802 const struct sr_dev_inst *sdi);
803 int (*config_list) (int info_id, GVariant **data,
804 const struct sr_dev_inst *sdi);
806 /* Device-specific */
807 int (*dev_open) (struct sr_dev_inst *sdi);
808 int (*dev_close) (struct sr_dev_inst *sdi);
809 int (*dev_test) (struct sr_dev_inst *sdi);
810 int (*dev_acquisition_start) (const struct sr_dev_inst *sdi,
812 int (*dev_acquisition_stop) (struct sr_dev_inst *sdi,
820 /** List of struct sr_dev pointers. */
822 /** List of struct datafeed_callback pointers. */
823 GSList *datafeed_callbacks;
826 unsigned int num_sources;
829 * Both "sources" and "pollfds" are of the same size and contain pairs
830 * of descriptor and callback function. We can not embed the GPollFD
831 * into the source struct since we want to be able to pass the array
832 * of all poll descriptors to g_poll().
834 struct source *sources;
839 * These are our synchronization primitives for stopping the session in
840 * an async fashion. We need to make sure the session is stopped from
841 * within the session thread itself.
843 // GMutex stop_mutex;
844 gboolean abort_session;
854 uint16_t trigger_mode;
855 uint16_t trigger_pos;
856 uint16_t trigger_stages;
857 unsigned char trigger_logic[TriggerStages+1];
858 unsigned char trigger0_inv[TriggerStages+1];
859 unsigned char trigger1_inv[TriggerStages+1];
860 char trigger0[TriggerStages+1][TriggerProbes];
861 char trigger1[TriggerStages+1][TriggerProbes];
862 uint16_t trigger0_count[TriggerStages+1];
863 uint16_t trigger1_count[TriggerStages+1];
866 struct ds_trigger_pos {
869 unsigned char first_block[504];
873 typedef void (*libusbhp_hotplug_cb_fn)(struct libusbhp_device_t *device,
882 struct dev_list_t *next;
888 struct udev* hotplug;
889 struct udev_monitor* hotplug_monitor;
890 struct dev_list_t *devlist;
894 HDEVNOTIFY hDeviceNotify;
897 libusbhp_hotplug_cb_fn attach;
898 libusbhp_hotplug_cb_fn detach;
902 struct libusbhp_device_t {
903 unsigned short idVendor;
904 unsigned short idProduct;