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
28 #ifdef HAVE_LIBUSB_1_0
37 * Status/error codes returned by libsigrok functions.
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.
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
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.
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 */
59 #define SR_MAX_NUM_PROBES 64 /* Limited by uint64_t. */
60 #define SR_MAX_PROBENAME_LEN 32
62 /* Handy little macros */
64 #define SR_KHZ(n) ((n) * 1000)
65 #define SR_MHZ(n) ((n) * 1000000)
66 #define SR_GHZ(n) ((n) * 1000000000)
68 #define SR_HZ_TO_NS(n) (1000000000 / (n))
70 /* libsigrok loglevels. */
77 typedef int (*sr_receive_data_callback) (int fd, int revents, void *user_data);
79 /* Data types used by hardware plugins for set_configuration() */
91 /* (Unused) protocol decoder stack entry */
99 /* sr_datafeed_packet.type values */
109 struct sr_datafeed_packet {
116 struct sr_datafeed_header {
118 struct timeval starttime;
121 int num_analog_probes;
122 int num_logic_probes;
125 #if defined(HAVE_LA_ALSA)
126 struct sr_analog_probe {
128 uint8_t res; /* Needs to be a power of 2, FIXME */
129 uint16_t val; /* Max hardware ADC width is 16bits */
132 struct sr_analog_sample {
133 uint8_t num_probes; /* Max hardware probes is 256 */
134 struct sr_analog_probe probes[];
139 struct sr_input_format *format;
141 struct sr_device *vdevice;
144 struct sr_input_format {
147 int (*format_match) (const char *filename);
148 int (*init) (struct sr_input *in);
149 int (*loadfile) (struct sr_input *in, const char *filename);
153 struct sr_output_format *format;
154 struct sr_device *device;
159 struct sr_output_format {
163 int (*init) (struct sr_output *o);
164 int (*data) (struct sr_output *o, const char *data_in,
165 uint64_t length_in, char **data_out, uint64_t *length_out);
166 int (*event) (struct sr_output *o, int event_type, char **data_out,
167 uint64_t *length_out);
175 * TODO: Parameters? If so, configured plugins need another struct.
176 * TODO: Input and output format?
181 struct sr_datastore {
182 /* Size in bytes of the number of units stored in this datastore */
184 unsigned int num_units; /* TODO: uint64_t */
189 * This represents a generic device connected to the system.
190 * For device-specific information, ask the plugin. The plugin_index refers
191 * to the device index within that plugin; it may be handling more than one
192 * device. All relevant plugin calls take a device_index parameter for this.
195 /* Which plugin handles this device */
196 struct sr_device_plugin *plugin;
197 /* A plugin may handle multiple devices of the same type */
199 /* List of struct sr_probe* */
201 /* Data acquired by this device, if any */
202 struct sr_datastore *datastore;
207 SR_PROBE_TYPE_ANALOG,
218 /* TODO: Get rid of this global variable. */
219 extern GSList *devices;
221 /* Hardware plugin capabilities */
223 SR_HWCAP_DUMMY, /* Used to terminate lists */
225 /*--- Device classes ------------------------------------------------*/
227 /** The device can act as logic analyzer. */
228 SR_HWCAP_LOGIC_ANALYZER,
230 /* TODO: SR_HWCAP_SCOPE, SW_HWCAP_PATTERN_GENERATOR, etc.? */
232 /*--- Device options ------------------------------------------------*/
234 /** The device supports setting/changing its samplerate. */
237 /* TODO: Better description? Rename to PROBE_AND_TRIGGER_CONFIG? */
238 /** The device supports setting a probe mask. */
239 SR_HWCAP_PROBECONFIG,
241 /** The device supports setting a pre/post-trigger capture ratio. */
242 SR_HWCAP_CAPTURE_RATIO,
245 /** The device supports setting a pattern (pattern generator mode). */
246 SR_HWCAP_PATTERN_MODE,
248 /*--- Special stuff -------------------------------------------------*/
250 /* TODO: Better description. */
251 /** The device supports specifying a capturefile to inject. */
252 SR_HWCAP_CAPTUREFILE,
254 /* TODO: Better description. */
255 /** The device supports specifying the capturefile unit size. */
256 SR_HWCAP_CAPTURE_UNITSIZE,
258 /* TODO: Better description. */
259 /** The device supports setting the number of probes. */
260 SR_HWCAP_CAPTURE_NUM_PROBES,
262 /*--- Acquisition modes ---------------------------------------------*/
265 * The device supports setting a sample time limit, i.e. how long the
266 * sample acquisition should run (in ms).
271 * The device supports setting a sample number limit, i.e. how many
272 * samples should be acquired.
274 SR_HWCAP_LIMIT_SAMPLES,
277 * The device supports continuous sampling, i.e. neither a time limit
278 * nor a sample number limit has to be supplied, it will just acquire
279 * samples continuously, until explicitly stopped by a certain command.
283 /* TODO: SR_HWCAP_JUST_SAMPLE or similar. */
286 struct sr_hwcap_option {
293 struct sr_device_instance {
302 struct sr_usb_device_instance *usb;
303 struct sr_serial_device_instance *serial;
307 /* sr_device_instance types */
313 #ifdef HAVE_LIBUSB_1_0
314 struct sr_usb_device_instance {
317 struct libusb_device_handle *devhdl;
321 struct sr_serial_device_instance {
326 /* Device instance status */
329 /* Found, but still booting */
331 /* Live, but not in use */
333 /* Actively in use in a session */
338 * TODO: This sucks, you just kinda have to "know" the returned type.
339 * TODO: Need a DI to return the number of trigger stages supported.
342 /* Device info IDs */
344 /* struct sr_device_instance for this specific device */
346 /* The number of probes connected to this device */
348 /* Samplerates supported by this device, (struct sr_samplerates) */
350 /* Types of trigger supported, out of "01crf" (char *) */
352 /* The currently set samplerate in Hz (uint64_t) */
353 SR_DI_CUR_SAMPLERATE,
354 /* Supported pattern generator modes */
359 * A device supports either a range of samplerates with steps of a given
360 * granularity, or is limited to a set of defined samplerates. Use either
361 * step or list, but not both.
363 struct sr_samplerates {
370 struct sr_device_plugin {
371 /* Plugin-specific */
375 int (*init) (const char *deviceinfo);
376 void (*cleanup) (void);
378 /* Device-specific */
379 int (*opendev) (int device_index);
380 int (*closedev) (int device_index);
381 void *(*get_device_info) (int device_index, int device_info_id);
382 int (*get_status) (int device_index);
383 int *(*get_capabilities) (void);
384 int (*set_configuration) (int device_index, int capability, void *value);
385 int (*start_acquisition) (int device_index, gpointer session_device_id);
386 void (*stop_acquisition) (int device_index, gpointer session_device_id);
390 /* List of struct sr_device* */
392 /* List of struct analyzer* */
394 /* list of sr_receive_data_callback */
395 GSList *datafeed_callbacks;
400 #include "sigrok-proto.h"