2 * This file is part of the sigrok project.
4 * Copyright (C) 2010 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 SIGROK_SIGROK_H
21 #define SIGROK_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. */
76 typedef int (*sr_receive_data_callback) (int fd, int revents, void *user_data);
78 /* Data types used by hardware plugins for set_configuration() */
85 /* sr_datafeed_packet.type values */
95 struct sr_datafeed_packet {
97 /* timeoffset since start, in picoseconds */
99 /* duration of data in this packet, in picoseconds */
104 struct sr_datafeed_header {
106 struct timeval starttime;
108 int num_analog_probes;
109 int num_logic_probes;
112 struct sr_datafeed_logic {
119 struct sr_input_format *format;
121 struct sr_device *vdevice;
124 struct sr_input_format {
127 int (*format_match) (const char *filename);
128 int (*init) (struct sr_input *in);
129 int (*loadfile) (struct sr_input *in, const char *filename);
133 struct sr_output_format *format;
134 struct sr_device *device;
139 struct sr_output_format {
143 int (*init) (struct sr_output *o);
144 int (*data) (struct sr_output *o, const char *data_in,
145 uint64_t length_in, char **data_out, uint64_t *length_out);
146 int (*event) (struct sr_output *o, int event_type, char **data_out,
147 uint64_t *length_out);
150 struct sr_datastore {
151 /* Size in bytes of the number of units stored in this datastore */
153 unsigned int num_units; /* TODO: uint64_t */
158 * This represents a generic device connected to the system.
159 * For device-specific information, ask the plugin. The plugin_index refers
160 * to the device index within that plugin; it may be handling more than one
161 * device. All relevant plugin calls take a device_index parameter for this.
164 /* Which plugin handles this device */
165 struct sr_device_plugin *plugin;
166 /* A plugin may handle multiple devices of the same type */
168 /* List of struct sr_probe* */
170 /* Data acquired by this device, if any */
171 struct sr_datastore *datastore;
176 SR_PROBE_TYPE_ANALOG,
187 /* Hardware plugin capabilities */
189 SR_HWCAP_DUMMY = 0, /* Used to terminate lists. Must be 0! */
191 /*--- Device classes ------------------------------------------------*/
193 /** The device can act as logic analyzer. */
194 SR_HWCAP_LOGIC_ANALYZER,
196 /* TODO: SR_HWCAP_SCOPE, SW_HWCAP_PATTERN_GENERATOR, etc.? */
198 /*--- Device types --------------------------------------------------*/
200 /** The device is demo device. */
201 SR_HWCAP_DEMO_DEVICE,
203 /*--- Device options ------------------------------------------------*/
205 /** The device supports setting/changing its samplerate. */
208 /* TODO: Better description? Rename to PROBE_AND_TRIGGER_CONFIG? */
209 /** The device supports setting a probe mask. */
210 SR_HWCAP_PROBECONFIG,
212 /** The device supports setting a pre/post-trigger capture ratio. */
213 SR_HWCAP_CAPTURE_RATIO,
216 /** The device supports setting a pattern (pattern generator mode). */
217 SR_HWCAP_PATTERN_MODE,
219 /** The device supports Run Length Encoding. */
222 /*--- Special stuff -------------------------------------------------*/
224 /* TODO: Better description. */
225 /** The device supports specifying a capturefile to inject. */
226 SR_HWCAP_CAPTUREFILE,
228 /* TODO: Better description. */
229 /** The device supports specifying the capturefile unit size. */
230 SR_HWCAP_CAPTURE_UNITSIZE,
232 /* TODO: Better description. */
233 /** The device supports setting the number of probes. */
234 SR_HWCAP_CAPTURE_NUM_PROBES,
236 /*--- Acquisition modes ---------------------------------------------*/
239 * The device supports setting a sample time limit, i.e. how long the
240 * sample acquisition should run (in ms).
245 * The device supports setting a sample number limit, i.e. how many
246 * samples should be acquired.
248 SR_HWCAP_LIMIT_SAMPLES,
251 * The device supports continuous sampling, i.e. neither a time limit
252 * nor a sample number limit has to be supplied, it will just acquire
253 * samples continuously, until explicitly stopped by a certain command.
257 /* TODO: SR_HWCAP_JUST_SAMPLE or similar. */
260 struct sr_hwcap_option {
267 struct sr_device_instance {
277 /* sr_device_instance types */
283 /* Device instance status */
286 /* Found, but still booting */
288 /* Live, but not in use */
290 /* Actively in use in a session */
295 * TODO: This sucks, you just kinda have to "know" the returned type.
296 * TODO: Need a DI to return the number of trigger stages supported.
299 /* Device info IDs */
301 /* struct sr_device_instance for this specific device */
303 /* The number of probes connected to this device */
305 /* The probe names on this device */
307 /* Samplerates supported by this device, (struct sr_samplerates) */
309 /* Types of trigger supported, out of "01crf" (char *) */
311 /* The currently set samplerate in Hz (uint64_t) */
312 SR_DI_CUR_SAMPLERATE,
313 /* Supported pattern generator modes */
318 * A device supports either a range of samplerates with steps of a given
319 * granularity, or is limited to a set of defined samplerates. Use either
320 * step or list, but not both.
322 struct sr_samplerates {
329 struct sr_device_plugin {
330 /* Plugin-specific */
334 int (*init) (const char *deviceinfo);
335 void (*cleanup) (void);
337 /* Device-specific */
338 int (*opendev) (int device_index);
339 int (*closedev) (int device_index);
340 void *(*get_device_info) (int device_index, int device_info_id);
341 int (*get_status) (int device_index);
342 int *(*get_capabilities) (void);
343 int (*set_configuration) (int device_index, int capability, void *value);
344 int (*start_acquisition) (int device_index, gpointer session_device_id);
345 void (*stop_acquisition) (int device_index, gpointer session_device_id);
349 /* List of struct sr_device* */
351 /* list of sr_receive_data_callback */
352 GSList *datafeed_callbacks;
357 #include "sigrok-proto.h"