extern "C" {
#endif
-/*
- * Status/error codes returned by libsigrok functions.
+/**
+ * @file
+ *
+ * The public libsigrok header file to be used by frontends.
+ *
+ * This is the only file that libsigrok users (frontends) are supposed to
+ * use and #include. There are other header files which get installed with
+ * libsigrok, but those are not meant to be used directly by frontends.
+ *
+ * The correct way to get/use the libsigrok API functions is:
*
+ * @code{.c}
+ * #include <libsigrok/libsigrok.h>
+ * @endcode
+ */
+
+/*
* All possible return codes of libsigrok functions must be listed here.
* Functions should never return hardcoded numbers as status, but rather
- * use these #defines instead. All error codes are negative numbers.
+ * use these enum values. All error codes are negative numbers.
*
* The error codes are globally unique in libsigrok, i.e. if one of the
* libsigrok functions returns a "malloc error" it must be exactly the same
* same return code.
*
* Also, for compatibility reasons, no defined return codes are ever removed
- * or reused for different #defines later. You can only add new #defines and
+ * or reused for different errors later. You can only add new entries and
* return codes, but never remove or redefine existing ones.
*/
-#define SR_OK 0 /* No error */
-#define SR_ERR -1 /* Generic/unspecified error */
-#define SR_ERR_MALLOC -2 /* Malloc/calloc/realloc error */
-#define SR_ERR_ARG -3 /* Function argument error */
-#define SR_ERR_BUG -4 /* Errors hinting at internal bugs */
-#define SR_ERR_SAMPLERATE -5 /* Incorrect samplerate */
+
+/** Status/error codes returned by libsigrok functions. */
+enum {
+ SR_OK = 0, /**< No error. */
+ SR_ERR = -1, /**< Generic/unspecified error. */
+ SR_ERR_MALLOC = -2, /**< Malloc/calloc/realloc error. */
+ SR_ERR_ARG = -3, /**< Function argument error. */
+ SR_ERR_BUG = -4, /**< Errors hinting at internal bugs. */
+ SR_ERR_SAMPLERATE = -5, /**< Incorrect samplerate. */
+};
#define SR_MAX_NUM_PROBES 64 /* Limited by uint64_t. */
#define SR_MAX_PROBENAME_LEN 32
#define SR_HZ_TO_NS(n) (1000000000 / (n))
-/* libsigrok loglevels. */
-#define SR_LOG_NONE 0 /**< Output no messages at all. */
-#define SR_LOG_ERR 1 /**< Output error messages. */
-#define SR_LOG_WARN 2 /**< Output warnings. */
-#define SR_LOG_INFO 3 /**< Output informational messages. */
-#define SR_LOG_DBG 4 /**< Output debug messages. */
-#define SR_LOG_SPEW 5 /**< Output very noisy debug messages. */
+/** libsigrok loglevels. */
+enum {
+ SR_LOG_NONE = 0, /**< Output no messages at all. */
+ SR_LOG_ERR = 1, /**< Output error messages. */
+ SR_LOG_WARN = 2, /**< Output warnings. */
+ SR_LOG_INFO = 3, /**< Output informational messages. */
+ SR_LOG_DBG = 4, /**< Output debug messages. */
+ SR_LOG_SPEW = 5, /**< Output very noisy debug messages. */
+};
/*
* Use SR_API to mark public API symbols, and SR_PRIV for private symbols.
typedef int (*sr_receive_data_callback_t)(int fd, int revents, void *cb_data);
-/* Data types used by hardware drivers for dev_config_set() */
+/** Data types used by hardware drivers for dev_config_set(). */
enum {
- SR_T_UINT64,
+ SR_T_UINT64 = 10000,
SR_T_CHAR,
SR_T_BOOL,
SR_T_FLOAT,
SR_T_KEYVALUE,
};
+/** Rational number data type, containing numerator and denominator values. */
struct sr_rational {
- /* numerator */
+ /** Numerator of the rational number. */
uint64_t p;
- /* denominator */
+ /** Denominator of the rational number. */
uint64_t q;
};
-/* sr_datafeed_packet.type values */
+/** Value for sr_datafeed_packet.type. */
enum {
- SR_DF_HEADER,
+ SR_DF_HEADER = 10000,
SR_DF_END,
SR_DF_TRIGGER,
SR_DF_LOGIC,
SR_DF_FRAME_END,
};
-/* sr_datafeed_analog.mq values */
+/** Values for sr_datafeed_analog.mq. */
enum {
- SR_MQ_VOLTAGE,
+ SR_MQ_VOLTAGE = 10000,
SR_MQ_CURRENT,
SR_MQ_RESISTANCE,
SR_MQ_CAPACITANCE,
SR_MQ_TEMPERATURE,
SR_MQ_FREQUENCY,
SR_MQ_DUTY_CYCLE,
+ SR_MQ_CONTINUITY,
+ SR_MQ_PULSE_WIDTH,
+ SR_MQ_CONDUCTANCE,
+ /** Electrical power, usually in W, or dBm. */
+ SR_MQ_POWER,
+ /** Gain (a transistor's gain, or hFE, for example). */
+ SR_MQ_GAIN,
+ /** Logarithmic representation of sound pressure relative to a
+ * reference value. */
+ SR_MQ_SOUND_PRESSURE_LEVEL,
};
-/* sr_datafeed_analog.unit values */
+/** Values for sr_datafeed_analog.unit. */
enum {
- SR_UNIT_VOLT,
+ SR_UNIT_VOLT = 10000,
SR_UNIT_AMPERE,
SR_UNIT_OHM,
SR_UNIT_FARAD,
- SR_UNIT_CELSIUS,
SR_UNIT_KELVIN,
+ SR_UNIT_CELSIUS,
+ SR_UNIT_FAHRENHEIT,
SR_UNIT_HERTZ,
SR_UNIT_PERCENTAGE,
+ SR_UNIT_BOOLEAN,
+ SR_UNIT_SECOND,
+ /** Unit of conductance, the inverse of resistance. */
+ SR_UNIT_SIEMENS,
+ /**
+ * An absolute measurement of power, in decibels, referenced to
+ * 1 milliwatt (dBu).
+ */
+ SR_UNIT_DECIBEL_MW,
+ /** Voltage in decibel, referenced to 1 volt (dBV). */
+ SR_UNIT_DECIBEL_VOLT,
+ /**
+ * Measurements that intrinsically do not have units attached, such
+ * as ratios, gains, etc. Specifically, a transistor's gain (hFE) is
+ * a unitless quantity, for example.
+ */
+ SR_UNIT_UNITLESS,
+ /** Sound pressure level relative so 20 micropascals. */
+ SR_UNIT_DECIBEL_SPL,
};
+/** Values for sr_datafeed_analog.flags. */
+enum {
+ /** Voltage measurement is alternating current (AC). */
+ SR_MQFLAG_AC = 0x01,
+ /** Voltage measurement is direct current (DC). */
+ SR_MQFLAG_DC = 0x02,
+ /** This is a true RMS measurement. */
+ SR_MQFLAG_RMS = 0x04,
+ /** Value is voltage drop across a diode, or NAN. */
+ SR_MQFLAG_DIODE = 0x08,
+ /** Device is in "hold" mode (repeating the last measurement). */
+ SR_MQFLAG_HOLD = 0x10,
+ /** Device is in "max" mode, only updating upon a new max value. */
+ SR_MQFLAG_MAX = 0x20,
+ /** Device is in "min" mode, only updating upon a new min value. */
+ SR_MQFLAG_MIN = 0x40,
+ /** Device is in autoranging mode. */
+ SR_MQFLAG_AUTORANGE = 0x80,
+ /** Device is in relative mode. */
+ SR_MQFLAG_RELATIVE = 0x100,
+ /** Sound pressure level is A-weighted in the frequency domain,
+ * according to IEC 61672:2003. */
+ SR_MQFLAG_SPL_FREQ_WEIGHT_A = 0x200,
+ /** Sound pressure level is C-weighted in the frequency domain,
+ * according to IEC 61672:2003. */
+ SR_MQFLAG_SPL_FREQ_WEIGHT_C = 0x400,
+ /** Sound pressure level is Z-weighted (i.e. not at all) in the
+ * frequency domain, according to IEC 61672:2003. */
+ SR_MQFLAG_SPL_FREQ_WEIGHT_Z = 0x800,
+ /** Sound pressure level is not weighted in the frequency domain,
+ * albeit without standards-defined low and high frequency limits. */
+ SR_MQFLAG_SPL_FREQ_WEIGHT_FLAT = 0x1000,
+ /** Sound pressure level measurement is S-weighted (1s) in the
+ * time domain. */
+ SR_MQFLAG_SPL_TIME_WEIGHT_S = 0x2000,
+ /** Sound pressure level measurement is F-weighted (125ms) in the
+ * time domain. */
+ SR_MQFLAG_SPL_TIME_WEIGHT_F = 0x4000,
+ /** Sound pressure level is time-averaged (LAT), also known as
+ * Equivalent Continuous A-weighted Sound Level (LEQ). */
+ SR_MQFLAG_SPL_LAT = 0x8000,
+ /** Sound pressure level represented as a percentage of measurements
+ * that were over a preset alarm level. */
+ SR_MQFLAG_SPL_PCT_OVER_ALARM = 0x10000,
+};
+
+struct sr_context;
+
struct sr_datafeed_packet {
uint16_t type;
void *payload;
struct sr_datafeed_analog {
int num_samples;
- int mq; /* Measured quantity (e.g. voltage, current, temperature) */
- int unit; /* Unit in which the MQ is measured. */
+ /** Measured quantity (voltage, current, temperature, and so on). */
+ int mq;
+ /** Unit in which the MQ is measured. */
+ int unit;
+ /** Bitmap with extra information about the MQ. */
+ uint64_t mqflags;
+ /** The analog value. */
float *data;
};
struct sr_input {
struct sr_input_format *format;
- char *param;
- struct sr_dev *vdev;
+ GHashTable *param;
+ struct sr_dev_inst *sdi;
+ void *internal;
};
struct sr_input_format {
struct sr_output {
struct sr_output_format *format;
- struct sr_dev *dev;
+ struct sr_dev_inst *sdi;
char *param;
void *internal;
};
uint64_t *length_out);
int (*event) (struct sr_output *o, int event_type, uint8_t **data_out,
uint64_t *length_out);
+ GString *(*recv) (struct sr_output *o, const struct sr_dev_inst *sdi,
+ struct sr_datafeed_packet *packet);
+ int (*cleanup) (struct sr_output *o);
};
struct sr_datastore {
- /* Size in bytes of the number of units stored in this datastore */
+ /** Size in bytes of the number of units stored in this datastore. */
int ds_unitsize;
unsigned int num_units; /* TODO: uint64_t */
GSList *chunklist;
* device. All relevant driver calls take a dev_index parameter for this.
*/
struct sr_dev {
- /* Which driver handles this device */
+ /** Which driver handles this device. */
struct sr_dev_driver *driver;
- /* A driver may handle multiple devices of the same type */
+ /** A driver may handle multiple devices of the same type. */
int driver_index;
- /* List of struct sr_probe* */
+ /** List of struct sr_probe pointers. */
GSList *probes;
- /* Data acquired by this device, if any */
+ /** Data acquired by this device, if any. */
struct sr_datastore *datastore;
};
enum {
- SR_PROBE_TYPE_LOGIC,
+ SR_PROBE_LOGIC = 10000,
+ SR_PROBE_ANALOG,
};
struct sr_probe {
char *trigger;
};
-/* Hardware driver capabilities */
+struct sr_hwopt {
+ int hwopt;
+ const void *value;
+};
+
+/** Hardware driver options. */
enum {
- SR_HWCAP_DUMMY = 0, /* Used to terminate lists. Must be 0! */
+ /**
+ * Some drivers cannot detect the exact model they're talking to
+ * (may be phased out).
+ */
+ SR_HWOPT_MODEL = 10000,
+ /**
+ * Specification on how to connect to a device.
+ *
+ * In combination with SR_HWOPT_SERIALCOMM, this is a serial port in
+ * the form which makes sense to the OS (e.g., /dev/ttyS0).
+ * Otherwise this specifies a USB device, either in the form of
+ * @verbatim <bus>.<address> @endverbatim (decimal, e.g. 1.65) or
+ * @verbatim <vendorid>.<productid> @endverbatim
+ * (hexadecimal, e.g. 1d6b.0001).
+ */
+ SR_HWOPT_CONN,
+
+ /**
+ * Serial communication specification, in the form:
+ *
+ * @verbatim <baudrate>/<databits><parity><stopbits> @endverbatim
+ *
+ * Example: 9600/8n1
+ *
+ * This is always an optional parameter, since a driver typically
+ * knows the speed at which the device wants to communicate.
+ */
+ SR_HWOPT_SERIALCOMM,
+};
+
+/** Hardware device capabilities. */
+enum {
/*--- Device classes ------------------------------------------------*/
/** The device can act as logic analyzer. */
- SR_HWCAP_LOGIC_ANALYZER,
+ SR_HWCAP_LOGIC_ANALYZER = 10000,
/** The device can act as an oscilloscope. */
SR_HWCAP_OSCILLOSCOPE,
/** The device is a demo device. */
SR_HWCAP_DEMO_DEV,
-
- /*--- Device communication ------------------------------------------*/
- /** Some drivers cannot detect the exact model they're talking to. */
- SR_HWCAP_MODEL,
-
- /** Specification on how to connect to a device */
- SR_HWCAP_CONN,
-
- /** Serial communication spec: <data bits><parity><stop bit> e.g. 8n1 */
- SR_HWCAP_SERIALCOMM,
-
+ /** The device can act as a sound level meter. */
+ SR_HWCAP_SOUNDLEVELMETER,
/*--- Device configuration ------------------------------------------*/
/** The device supports setting/changing its samplerate. */
- SR_HWCAP_SAMPLERATE,
-
- /* TODO: Better description? Rename to PROBE_AND_TRIGGER_CONFIG? */
- /** The device supports setting a probe mask. */
- SR_HWCAP_PROBECONFIG,
+ SR_HWCAP_SAMPLERATE = 20000,
/** The device supports setting a pre/post-trigger capture ratio. */
SR_HWCAP_CAPTURE_RATIO,
/** Trigger source. */
SR_HWCAP_TRIGGER_SOURCE,
- /** Horizontal trigger position */
+ /** Horizontal trigger position. */
SR_HWCAP_HORIZ_TRIGGERPOS,
/** Buffer size. */
/** Coupling. */
SR_HWCAP_COUPLING,
-
/*--- Special stuff -------------------------------------------------*/
+ /** Session filename. */
+ SR_HWCAP_SESSIONFILE = 30000,
+
/* TODO: Better description. */
/** The device supports specifying a capturefile to inject. */
SR_HWCAP_CAPTUREFILE,
/** The device supports setting the number of probes. */
SR_HWCAP_CAPTURE_NUM_PROBES,
-
/*--- Acquisition modes ---------------------------------------------*/
/**
- * The device supports setting a sample time limit, i.e. how long the
- * sample acquisition should run (in ms).
+ * The device supports setting a sample time limit (how long
+ * the sample acquisition should run, in ms).
*/
- SR_HWCAP_LIMIT_MSEC,
+ SR_HWCAP_LIMIT_MSEC = 40000,
/**
- * The device supports setting a sample number limit, i.e. how many
- * samples should be acquired.
+ * The device supports setting a sample number limit (how many
+ * samples should be acquired).
*/
SR_HWCAP_LIMIT_SAMPLES,
/**
- * The device supports setting a frame limit, i.e. how many
- * frames should be acquired.
+ * The device supports setting a frame limit (how many
+ * frames should be acquired).
*/
SR_HWCAP_LIMIT_FRAMES,
/**
- * The device supports continuous sampling, i.e. neither a time limit
+ * The device supports continuous sampling. Neither a time limit
* nor a sample number limit has to be supplied, it will just acquire
* samples continuously, until explicitly stopped by a certain command.
*/
SR_HWCAP_CONTINUOUS,
-
};
struct sr_hwcap_option {
};
struct sr_dev_inst {
+ struct sr_dev_driver *driver;
int index;
int status;
int inst_type;
char *vendor;
char *model;
char *version;
+ GSList *probes;
void *priv;
};
-/* sr_dev_inst types */
+/** Types of device instances (sr_dev_inst). */
enum {
/** Device instance type for USB devices. */
- SR_INST_USB,
+ SR_INST_USB = 10000,
/** Device instance type for serial port devices. */
SR_INST_SERIAL,
};
-/* Device instance status */
+/** Device instance status. */
enum {
- SR_ST_NOT_FOUND,
- /* Found, but still booting */
+ /** The device instance was not found. */
+ SR_ST_NOT_FOUND = 10000,
+ /** The device instance was found, but is still booting. */
SR_ST_INITIALIZING,
- /* Live, but not in use */
+ /** The device instance is live, but not in use. */
SR_ST_INACTIVE,
- /* Actively in use in a session */
+ /** The device instance is actively in use in a session. */
SR_ST_ACTIVE,
+ /** The device is winding down its session. */
+ SR_ST_STOPPING,
};
/*
* TODO: Need a DI to return the number of trigger stages supported.
*/
-/* Device info IDs */
+/** Device info IDs. */
enum {
- /* struct sr_dev_inst for this specific device */
- SR_DI_INST,
- /* The number of probes connected to this device */
+ /** A list of options supported by the driver. */
+ SR_DI_HWOPTS = 10000,
+ /** A list of capabilities supported by the device. */
+ SR_DI_HWCAPS,
+ /** The number of probes connected to this device. */
SR_DI_NUM_PROBES,
- /* The probe names on this device */
+ /** The probe names on this device. */
SR_DI_PROBE_NAMES,
- /* Samplerates supported by this device, (struct sr_samplerates) */
+ /** Samplerates supported by this device (struct sr_samplerates). */
SR_DI_SAMPLERATES,
- /* Types of logic trigger supported, out of "01crf" (char *) */
+ /** Types of logic trigger supported, out of "01crf" (char *). */
SR_DI_TRIGGER_TYPES,
- /* The currently set samplerate in Hz (uint64_t) */
+ /** The currently set samplerate in Hz (uint64_t). */
SR_DI_CUR_SAMPLERATE,
- /* Supported patterns (in pattern generator mode) */
+ /** Supported patterns (in pattern generator mode). */
SR_DI_PATTERNS,
- /* Supported buffer sizes */
+ /** Supported buffer sizes. */
SR_DI_BUFFERSIZES,
- /* Supported time bases */
+ /** Supported time bases. */
SR_DI_TIMEBASES,
- /* Supported trigger sources */
+ /** Supported trigger sources. */
SR_DI_TRIGGER_SOURCES,
- /* Supported filter targets */
+ /** Supported filter targets. */
SR_DI_FILTERS,
- /* Valid volts/div values */
+ /** Valid volts/div values. */
SR_DI_VDIVS,
- /* Coupling options */
+ /** Coupling options. */
SR_DI_COUPLING,
};
char *name;
char *longname;
int api_version;
- int (*init) (const char *devinfo);
+ int (*init) (void);
int (*cleanup) (void);
+ GSList *(*scan) (GSList *options);
+ GSList *(*dev_list) (void);
+ int (*dev_clear) (void);
/* Device-specific */
- int (*dev_open) (int dev_index);
- int (*dev_close) (int dev_index);
- const void *(*dev_info_get) (int dev_index, int dev_info_id);
- int (*dev_status_get) (int dev_index);
- const int *(*hwcap_get_all) (void);
- int (*dev_config_set) (int dev_index, int hwcap, const void *value);
- int (*dev_acquisition_start) (int dev_index, void *session_dev_id);
- int (*dev_acquisition_stop) (int dev_index, void *session_dev_id);
+ int (*dev_open) (struct sr_dev_inst *sdi);
+ int (*dev_close) (struct sr_dev_inst *sdi);
+ int (*info_get) (int info_id, const void **data,
+ const struct sr_dev_inst *sdi);
+ int (*dev_config_set) (const struct sr_dev_inst *sdi, int hwcap,
+ const void *value);
+ int (*dev_acquisition_start) (const struct sr_dev_inst *sdi,
+ void *cb_data);
+ int (*dev_acquisition_stop) (struct sr_dev_inst *sdi,
+ void *cb_data);
+
+ /* Dynamic */
+ void *priv;
};
struct sr_session {
- /* List of struct sr_dev* */
+ /** List of struct sr_dev pointers. */
GSList *devs;
- /* list of sr_receive_data_callback_t */
+ /** List of sr_receive_data_callback_t items. */
GSList *datafeed_callbacks;
GTimeVal starttime;
- gboolean running;
+
+ unsigned int num_sources;
+
+ /*
+ * Both "sources" and "pollfds" are of the same size and contain pairs
+ * of descriptor and callback function. We can not embed the GPollFD
+ * into the source struct since we want to be able to pass the array
+ * of all poll descriptors to g_poll().
+ */
+ struct source *sources;
+ GPollFD *pollfds;
+ int source_timeout;
};
#include "proto.h"
projects / libsigrok.git / blobdiff