2 * This file is part of the sigrok project.
4 * Copyright (C) 2010-2012 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
34 * Status/error codes returned by libsigrok functions.
36 * All possible return codes of libsigrok functions must be listed here.
37 * Functions should never return hardcoded numbers as status, but rather
38 * use these #defines instead. All error codes are negative numbers.
40 * The error codes are globally unique in libsigrok, i.e. if one of the
41 * libsigrok functions returns a "malloc error" it must be exactly the same
42 * return value as used by all other functions to indicate "malloc error".
43 * There must be no functions which indicate two different errors via the
46 * Also, for compatibility reasons, no defined return codes are ever removed
47 * or reused for different #defines later. You can only add new #defines and
48 * return codes, but never remove or redefine existing ones.
50 #define SR_OK 0 /* No error */
51 #define SR_ERR -1 /* Generic/unspecified error */
52 #define SR_ERR_MALLOC -2 /* Malloc/calloc/realloc error */
53 #define SR_ERR_ARG -3 /* Function argument error */
54 #define SR_ERR_BUG -4 /* Errors hinting at internal bugs */
55 #define SR_ERR_SAMPLERATE -5 /* Incorrect samplerate */
57 #define SR_MAX_NUM_PROBES 64 /* Limited by uint64_t. */
58 #define SR_MAX_PROBENAME_LEN 32
60 /* Handy little macros */
62 #define SR_KHZ(n) ((n) * 1000)
63 #define SR_MHZ(n) ((n) * 1000000)
64 #define SR_GHZ(n) ((n) * 1000000000)
66 #define SR_HZ_TO_NS(n) (1000000000 / (n))
68 /* libsigrok loglevels. */
69 #define SR_LOG_NONE 0 /**< Output no messages at all. */
70 #define SR_LOG_ERR 1 /**< Output error messages. */
71 #define SR_LOG_WARN 2 /**< Output warnings. */
72 #define SR_LOG_INFO 3 /**< Output informational messages. */
73 #define SR_LOG_DBG 4 /**< Output debug messages. */
74 #define SR_LOG_SPEW 5 /**< Output very noisy debug messages. */
77 * Use SR_API to mark public API symbols, and SR_PRIV for private symbols.
79 * Variables and functions marked 'static' are private already and don't
80 * need SR_PRIV. However, functions which are not static (because they need
81 * to be used in other libsigrok-internal files) but are also not meant to
82 * be part of the public libsigrok API, must use SR_PRIV.
84 * This uses the 'visibility' feature of gcc (requires gcc >= 4.0).
86 * Details: http://gcc.gnu.org/wiki/Visibility
89 /* Marks public libsigrok API symbols. */
90 #define SR_API __attribute__((visibility("default")))
92 /* Marks private, non-public libsigrok symbols (not part of the API). */
93 #define SR_PRIV __attribute__((visibility("hidden")))
95 typedef int (*sr_receive_data_callback) (int fd, int revents, void *user_data);
97 /* Data types used by hardware drivers for dev_config_set() */
104 /* sr_datafeed_packet.type values */
113 struct sr_datafeed_packet {
118 struct sr_datafeed_header {
120 struct timeval starttime;
122 int num_logic_probes;
125 struct sr_datafeed_logic {
132 struct sr_input_format *format;
137 struct sr_input_format {
140 int (*format_match) (const char *filename);
141 int (*init) (struct sr_input *in);
142 int (*loadfile) (struct sr_input *in, const char *filename);
146 struct sr_output_format *format;
152 struct sr_output_format {
156 int (*init) (struct sr_output *o);
157 int (*data) (struct sr_output *o, const char *data_in,
158 uint64_t length_in, char **data_out, uint64_t *length_out);
159 int (*event) (struct sr_output *o, int event_type, char **data_out,
160 uint64_t *length_out);
163 struct sr_datastore {
164 /* Size in bytes of the number of units stored in this datastore */
166 unsigned int num_units; /* TODO: uint64_t */
171 * This represents a generic device connected to the system.
172 * For device-specific information, ask the driver. The driver_index refers
173 * to the device index within that driver; it may be handling more than one
174 * device. All relevant driver calls take a dev_index parameter for this.
177 /* Which driver handles this device */
178 struct sr_dev_driver *driver;
179 /* A driver may handle multiple devices of the same type */
181 /* List of struct sr_probe* */
183 /* Data acquired by this device, if any */
184 struct sr_datastore *datastore;
199 /* Hardware driver capabilities */
201 SR_HWCAP_DUMMY = 0, /* Used to terminate lists. Must be 0! */
203 /*--- Device classes ------------------------------------------------*/
205 /** The device can act as logic analyzer. */
206 SR_HWCAP_LOGIC_ANALYZER,
208 /* TODO: SR_HWCAP_SCOPE, SW_HWCAP_PATTERN_GENERATOR, etc.? */
210 /*--- Device types --------------------------------------------------*/
212 /** The device is demo device. */
215 /*--- Device options ------------------------------------------------*/
217 /** The device supports setting/changing its samplerate. */
220 /* TODO: Better description? Rename to PROBE_AND_TRIGGER_CONFIG? */
221 /** The device supports setting a probe mask. */
222 SR_HWCAP_PROBECONFIG,
224 /** The device supports setting a pre/post-trigger capture ratio. */
225 SR_HWCAP_CAPTURE_RATIO,
228 /** The device supports setting a pattern (pattern generator mode). */
229 SR_HWCAP_PATTERN_MODE,
231 /** The device supports Run Length Encoding. */
234 /*--- Special stuff -------------------------------------------------*/
236 /* TODO: Better description. */
237 /** The device supports specifying a capturefile to inject. */
238 SR_HWCAP_CAPTUREFILE,
240 /* TODO: Better description. */
241 /** The device supports specifying the capturefile unit size. */
242 SR_HWCAP_CAPTURE_UNITSIZE,
244 /* TODO: Better description. */
245 /** The device supports setting the number of probes. */
246 SR_HWCAP_CAPTURE_NUM_PROBES,
248 /*--- Acquisition modes ---------------------------------------------*/
251 * The device supports setting a sample time limit, i.e. how long the
252 * sample acquisition should run (in ms).
257 * The device supports setting a sample number limit, i.e. how many
258 * samples should be acquired.
260 SR_HWCAP_LIMIT_SAMPLES,
263 * The device supports continuous sampling, i.e. neither a time limit
264 * nor a sample number limit has to be supplied, it will just acquire
265 * samples continuously, until explicitly stopped by a certain command.
269 /* TODO: SR_HWCAP_JUST_SAMPLE or similar. */
272 struct sr_hwcap_option {
289 /* sr_dev_inst types */
295 /* Device instance status */
298 /* Found, but still booting */
300 /* Live, but not in use */
302 /* Actively in use in a session */
307 * TODO: This sucks, you just kinda have to "know" the returned type.
308 * TODO: Need a DI to return the number of trigger stages supported.
311 /* Device info IDs */
313 /* struct sr_dev_inst for this specific device */
315 /* The number of probes connected to this device */
317 /* The probe names on this device */
319 /* Samplerates supported by this device, (struct sr_samplerates) */
321 /* Types of trigger supported, out of "01crf" (char *) */
323 /* The currently set samplerate in Hz (uint64_t) */
324 SR_DI_CUR_SAMPLERATE,
325 /* Supported pattern generator modes */
330 * A device supports either a range of samplerates with steps of a given
331 * granularity, or is limited to a set of defined samplerates. Use either
332 * step or list, but not both.
334 struct sr_samplerates {
341 struct sr_dev_driver {
342 /* Driver-specific */
346 int (*init) (const char *devinfo);
347 int (*cleanup) (void);
349 /* Device-specific */
350 int (*dev_open) (int dev_index);
351 int (*dev_close) (int dev_index);
352 void *(*dev_info_get) (int dev_index, int dev_info_id);
353 int (*dev_status_get) (int dev_index);
354 int *(*hwcap_get_all) (void);
355 int (*dev_config_set) (int dev_index, int hwcap, void *value);
356 int (*dev_acquisition_start) (int dev_index, gpointer session_dev_id);
357 int (*dev_acquisition_stop) (int dev_index, gpointer session_dev_id);
361 /* List of struct sr_dev* */
363 /* list of sr_receive_data_callback */
364 GSList *datafeed_callbacks;
369 #include "sigrok-proto.h"