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1 | /* | |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2010 Bert Vermeulen <bert@biot.com> | |
5 | * | |
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. | |
10 | * | |
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. | |
15 | * | |
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/>. | |
18 | */ | |
19 | ||
20 | #ifndef SIGROK_SIGROK_H | |
21 | #define SIGROK_SIGROK_H | |
22 | ||
23 | #include <stdio.h> | |
24 | #include <sys/time.h> | |
25 | #include <stdint.h> | |
26 | #include <inttypes.h> | |
27 | #include <glib.h> | |
28 | #ifdef HAVE_LIBUSB_1_0 | |
29 | #include <libusb.h> | |
30 | #endif | |
31 | ||
32 | #ifdef __cplusplus | |
33 | extern "C" { | |
34 | #endif | |
35 | ||
36 | /* | |
37 | * Status/error codes returned by libsigrok functions. | |
38 | * | |
39 | * All possible return codes of libsigrok functions must be listed here. | |
40 | * Functions should never return hardcoded numbers as status, but rather | |
41 | * use these #defines instead. All error codes are negative numbers. | |
42 | * | |
43 | * The error codes are globally unique in libsigrok, i.e. if one of the | |
44 | * libsigrok functions returns a "malloc error" it must be exactly the same | |
45 | * return value as used by all other functions to indicate "malloc error". | |
46 | * There must be no functions which indicate two different errors via the | |
47 | * same return code. | |
48 | * | |
49 | * Also, for compatibility reasons, no defined return codes are ever removed | |
50 | * or reused for different #defines later. You can only add new #defines and | |
51 | * return codes, but never remove or redefine existing ones. | |
52 | */ | |
53 | #define SR_OK 0 /* No error */ | |
54 | #define SR_ERR -1 /* Generic/unspecified error */ | |
55 | #define SR_ERR_MALLOC -2 /* Malloc/calloc/realloc error */ | |
56 | #define SR_ERR_ARG -3 /* Function argument error */ | |
57 | #define SR_ERR_SAMPLERATE -4 /* Incorrect samplerate */ | |
58 | ||
59 | #define SR_MAX_NUM_PROBES 64 /* Limited by uint64_t. */ | |
60 | #define SR_MAX_PROBENAME_LEN 32 | |
61 | ||
62 | /* Handy little macros */ | |
63 | #define SR_HZ(n) (n) | |
64 | #define SR_KHZ(n) ((n) * 1000) | |
65 | #define SR_MHZ(n) ((n) * 1000000) | |
66 | #define SR_GHZ(n) ((n) * 1000000000) | |
67 | ||
68 | #define SR_HZ_TO_NS(n) (1000000000 / (n)) | |
69 | ||
70 | /* libsigrok loglevels. */ | |
71 | #define SR_LOG_NONE 0 | |
72 | #define SR_LOG_ERR 1 | |
73 | #define SR_LOG_WARN 2 | |
74 | #define SR_LOG_INFO 3 | |
75 | #define SR_LOG_DBG 4 | |
76 | #define SR_LOG_SPEW 5 | |
77 | ||
78 | typedef int (*sr_receive_data_callback) (int fd, int revents, void *user_data); | |
79 | ||
80 | /* Data types used by hardware plugins for set_configuration() */ | |
81 | enum { | |
82 | SR_T_UINT64, | |
83 | SR_T_CHAR, | |
84 | SR_T_BOOL, | |
85 | }; | |
86 | ||
87 | /* sr_datafeed_packet.type values */ | |
88 | enum { | |
89 | SR_DF_HEADER, | |
90 | SR_DF_END, | |
91 | SR_DF_TRIGGER, | |
92 | SR_DF_LOGIC, | |
93 | SR_DF_ANALOG, | |
94 | SR_DF_PD, | |
95 | }; | |
96 | ||
97 | struct sr_datafeed_packet { | |
98 | uint16_t type; | |
99 | /* timeoffset since start, in picoseconds */ | |
100 | uint64_t timeoffset; | |
101 | /* duration of data in this packet, in picoseconds */ | |
102 | uint64_t duration; | |
103 | void *payload; | |
104 | }; | |
105 | ||
106 | struct sr_datafeed_header { | |
107 | int feed_version; | |
108 | struct timeval starttime; | |
109 | uint64_t samplerate; | |
110 | int num_analog_probes; | |
111 | int num_logic_probes; | |
112 | }; | |
113 | ||
114 | struct sr_datafeed_logic { | |
115 | uint64_t length; | |
116 | uint16_t unitsize; | |
117 | void *data; | |
118 | }; | |
119 | ||
120 | struct sr_datafeed_pd { | |
121 | char *protocol; | |
122 | char *annotation; | |
123 | unsigned char *data; | |
124 | }; | |
125 | ||
126 | #if defined(HAVE_LA_ALSA) | |
127 | struct sr_analog_probe { | |
128 | uint8_t att; | |
129 | uint8_t res; /* Needs to be a power of 2, FIXME */ | |
130 | uint16_t val; /* Max hardware ADC width is 16bits */ | |
131 | }; | |
132 | ||
133 | struct sr_analog_sample { | |
134 | uint8_t num_probes; /* Max hardware probes is 256 */ | |
135 | struct sr_analog_probe probes[]; | |
136 | }; | |
137 | #endif | |
138 | ||
139 | struct sr_input { | |
140 | struct sr_input_format *format; | |
141 | char *param; | |
142 | struct sr_device *vdevice; | |
143 | }; | |
144 | ||
145 | struct sr_input_format { | |
146 | char *id; | |
147 | char *description; | |
148 | int (*format_match) (const char *filename); | |
149 | int (*init) (struct sr_input *in); | |
150 | int (*loadfile) (struct sr_input *in, const char *filename); | |
151 | }; | |
152 | ||
153 | struct sr_output { | |
154 | struct sr_output_format *format; | |
155 | struct sr_device *device; | |
156 | char *param; | |
157 | void *internal; | |
158 | }; | |
159 | ||
160 | struct sr_output_format { | |
161 | char *id; | |
162 | char *description; | |
163 | int df_type; | |
164 | int (*init) (struct sr_output *o); | |
165 | int (*data) (struct sr_output *o, const char *data_in, | |
166 | uint64_t length_in, char **data_out, uint64_t *length_out); | |
167 | int (*event) (struct sr_output *o, int event_type, char **data_out, | |
168 | uint64_t *length_out); | |
169 | }; | |
170 | ||
171 | struct sr_datastore { | |
172 | /* Size in bytes of the number of units stored in this datastore */ | |
173 | int ds_unitsize; | |
174 | unsigned int num_units; /* TODO: uint64_t */ | |
175 | GSList *chunklist; | |
176 | }; | |
177 | ||
178 | /* | |
179 | * This represents a generic device connected to the system. | |
180 | * For device-specific information, ask the plugin. The plugin_index refers | |
181 | * to the device index within that plugin; it may be handling more than one | |
182 | * device. All relevant plugin calls take a device_index parameter for this. | |
183 | */ | |
184 | struct sr_device { | |
185 | /* Which plugin handles this device */ | |
186 | struct sr_device_plugin *plugin; | |
187 | /* A plugin may handle multiple devices of the same type */ | |
188 | int plugin_index; | |
189 | /* List of struct sr_probe* */ | |
190 | GSList *probes; | |
191 | /* Data acquired by this device, if any */ | |
192 | struct sr_datastore *datastore; | |
193 | }; | |
194 | ||
195 | enum { | |
196 | SR_PROBE_TYPE_LOGIC, | |
197 | SR_PROBE_TYPE_ANALOG, | |
198 | }; | |
199 | ||
200 | struct sr_probe { | |
201 | int index; | |
202 | int type; | |
203 | gboolean enabled; | |
204 | char *name; | |
205 | char *trigger; | |
206 | }; | |
207 | ||
208 | /* Hardware plugin capabilities */ | |
209 | enum { | |
210 | SR_HWCAP_DUMMY, /* Used to terminate lists */ | |
211 | ||
212 | /*--- Device classes ------------------------------------------------*/ | |
213 | ||
214 | /** The device can act as logic analyzer. */ | |
215 | SR_HWCAP_LOGIC_ANALYZER, | |
216 | ||
217 | /* TODO: SR_HWCAP_SCOPE, SW_HWCAP_PATTERN_GENERATOR, etc.? */ | |
218 | ||
219 | /*--- Device options ------------------------------------------------*/ | |
220 | ||
221 | /** The device supports setting/changing its samplerate. */ | |
222 | SR_HWCAP_SAMPLERATE, | |
223 | ||
224 | /* TODO: Better description? Rename to PROBE_AND_TRIGGER_CONFIG? */ | |
225 | /** The device supports setting a probe mask. */ | |
226 | SR_HWCAP_PROBECONFIG, | |
227 | ||
228 | /** The device supports setting a pre/post-trigger capture ratio. */ | |
229 | SR_HWCAP_CAPTURE_RATIO, | |
230 | ||
231 | /* TODO? */ | |
232 | /** The device supports setting a pattern (pattern generator mode). */ | |
233 | SR_HWCAP_PATTERN_MODE, | |
234 | ||
235 | /** The device supports Run Length Encoding. */ | |
236 | SR_HWCAP_RLE, | |
237 | ||
238 | /*--- Special stuff -------------------------------------------------*/ | |
239 | ||
240 | /* TODO: Better description. */ | |
241 | /** The device supports specifying a capturefile to inject. */ | |
242 | SR_HWCAP_CAPTUREFILE, | |
243 | ||
244 | /* TODO: Better description. */ | |
245 | /** The device supports specifying the capturefile unit size. */ | |
246 | SR_HWCAP_CAPTURE_UNITSIZE, | |
247 | ||
248 | /* TODO: Better description. */ | |
249 | /** The device supports setting the number of probes. */ | |
250 | SR_HWCAP_CAPTURE_NUM_PROBES, | |
251 | ||
252 | /*--- Acquisition modes ---------------------------------------------*/ | |
253 | ||
254 | /** | |
255 | * The device supports setting a sample time limit, i.e. how long the | |
256 | * sample acquisition should run (in ms). | |
257 | */ | |
258 | SR_HWCAP_LIMIT_MSEC, | |
259 | ||
260 | /** | |
261 | * The device supports setting a sample number limit, i.e. how many | |
262 | * samples should be acquired. | |
263 | */ | |
264 | SR_HWCAP_LIMIT_SAMPLES, | |
265 | ||
266 | /** | |
267 | * The device supports continuous sampling, i.e. neither a time limit | |
268 | * nor a sample number limit has to be supplied, it will just acquire | |
269 | * samples continuously, until explicitly stopped by a certain command. | |
270 | */ | |
271 | SR_HWCAP_CONTINUOUS, | |
272 | ||
273 | /* TODO: SR_HWCAP_JUST_SAMPLE or similar. */ | |
274 | }; | |
275 | ||
276 | struct sr_hwcap_option { | |
277 | int capability; | |
278 | int type; | |
279 | char *description; | |
280 | char *shortname; | |
281 | }; | |
282 | ||
283 | struct sr_device_instance { | |
284 | int index; | |
285 | int status; | |
286 | int instance_type; | |
287 | char *vendor; | |
288 | char *model; | |
289 | char *version; | |
290 | void *priv; | |
291 | union { | |
292 | struct sr_usb_device_instance *usb; | |
293 | struct sr_serial_device_instance *serial; | |
294 | }; | |
295 | }; | |
296 | ||
297 | /* sr_device_instance types */ | |
298 | enum { | |
299 | SR_USB_INSTANCE, | |
300 | SR_SERIAL_INSTANCE, | |
301 | }; | |
302 | ||
303 | #ifdef HAVE_LIBUSB_1_0 | |
304 | struct sr_usb_device_instance { | |
305 | uint8_t bus; | |
306 | uint8_t address; | |
307 | struct libusb_device_handle *devhdl; | |
308 | }; | |
309 | #endif | |
310 | ||
311 | struct sr_serial_device_instance { | |
312 | char *port; | |
313 | int fd; | |
314 | }; | |
315 | ||
316 | /* Device instance status */ | |
317 | enum { | |
318 | SR_ST_NOT_FOUND, | |
319 | /* Found, but still booting */ | |
320 | SR_ST_INITIALIZING, | |
321 | /* Live, but not in use */ | |
322 | SR_ST_INACTIVE, | |
323 | /* Actively in use in a session */ | |
324 | SR_ST_ACTIVE, | |
325 | }; | |
326 | ||
327 | /* | |
328 | * TODO: This sucks, you just kinda have to "know" the returned type. | |
329 | * TODO: Need a DI to return the number of trigger stages supported. | |
330 | */ | |
331 | ||
332 | /* Device info IDs */ | |
333 | enum { | |
334 | /* struct sr_device_instance for this specific device */ | |
335 | SR_DI_INSTANCE, | |
336 | /* The number of probes connected to this device */ | |
337 | SR_DI_NUM_PROBES, | |
338 | /* The probe names on this device */ | |
339 | SR_DI_PROBE_NAMES, | |
340 | /* Samplerates supported by this device, (struct sr_samplerates) */ | |
341 | SR_DI_SAMPLERATES, | |
342 | /* Types of trigger supported, out of "01crf" (char *) */ | |
343 | SR_DI_TRIGGER_TYPES, | |
344 | /* The currently set samplerate in Hz (uint64_t) */ | |
345 | SR_DI_CUR_SAMPLERATE, | |
346 | /* Supported pattern generator modes */ | |
347 | SR_DI_PATTERNMODES, | |
348 | }; | |
349 | ||
350 | /* | |
351 | * A device supports either a range of samplerates with steps of a given | |
352 | * granularity, or is limited to a set of defined samplerates. Use either | |
353 | * step or list, but not both. | |
354 | */ | |
355 | struct sr_samplerates { | |
356 | uint64_t low; | |
357 | uint64_t high; | |
358 | uint64_t step; | |
359 | uint64_t *list; | |
360 | }; | |
361 | ||
362 | struct sr_device_plugin { | |
363 | /* Plugin-specific */ | |
364 | char *name; | |
365 | char *longname; | |
366 | int api_version; | |
367 | int (*init) (const char *deviceinfo); | |
368 | void (*cleanup) (void); | |
369 | ||
370 | /* Device-specific */ | |
371 | int (*opendev) (int device_index); | |
372 | int (*closedev) (int device_index); | |
373 | void *(*get_device_info) (int device_index, int device_info_id); | |
374 | int (*get_status) (int device_index); | |
375 | int *(*get_capabilities) (void); | |
376 | int (*set_configuration) (int device_index, int capability, void *value); | |
377 | int (*start_acquisition) (int device_index, gpointer session_device_id); | |
378 | void (*stop_acquisition) (int device_index, gpointer session_device_id); | |
379 | }; | |
380 | ||
381 | struct sr_session { | |
382 | /* List of struct sr_device* */ | |
383 | GSList *devices; | |
384 | /* List of struct analyzer* */ | |
385 | GSList *analyzers; | |
386 | /* list of sr_receive_data_callback */ | |
387 | GSList *datafeed_callbacks; | |
388 | GTimeVal starttime; | |
389 | gboolean running; | |
390 | }; | |
391 | ||
392 | #include "sigrok-proto.h" | |
393 | ||
394 | #ifdef __cplusplus | |
395 | } | |
396 | #endif | |
397 | ||
398 | #endif |