2 * This file is part of the libsigrok project.
4 * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
5 * Copyright (C) 2012 Peter Stuge <peter@stuge.se>
7 * This program is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
26 #include <libsigrok/libsigrok.h>
27 #include "libsigrok-internal.h"
28 #include "minilzo/minilzo.h"
31 #define LOG_PREFIX "backend"
35 * @mainpage libsigrok API
37 * @section sec_intro Introduction
39 * The <a href="http://sigrok.org">sigrok</a> project aims at creating a
40 * portable, cross-platform, Free/Libre/Open-Source signal analysis software
41 * suite that supports various device types (such as logic analyzers,
42 * oscilloscopes, multimeters, and more).
44 * <a href="http://sigrok.org/wiki/Libsigrok">libsigrok</a> is a shared
45 * library written in C which provides the basic API for talking to
46 * <a href="http://sigrok.org/wiki/Supported_hardware">supported hardware</a>
47 * and reading/writing the acquired data into various
48 * <a href="http://sigrok.org/wiki/Input_output_formats">input/output
51 * @section sec_api API reference
53 * See the "Modules" page for an introduction to various libsigrok
54 * related topics and the detailed API documentation of the respective
57 * You can also browse the API documentation by file, or review all
60 * @section sec_mailinglists Mailing lists
62 * There is one mailing list for sigrok/libsigrok: <a href="https://lists.sourceforge.net/lists/listinfo/sigrok-devel">sigrok-devel</a>.
64 * @section sec_irc IRC
66 * You can find the sigrok developers in the
67 * <a href="ircs://irc.libera.chat/#sigrok">\#sigrok</a>
68 * IRC channel on Libera.Chat.
70 * @section sec_website Website
72 * <a href="http://sigrok.org/wiki/Libsigrok">sigrok.org/wiki/Libsigrok</a>
78 * Initializing and shutting down libsigrok.
82 * @defgroup grp_init Initialization
84 * Initializing and shutting down libsigrok.
86 * Before using any of the libsigrok functionality (except for
87 * sr_log_loglevel_set()), sr_init() must be called to initialize the
88 * library, which will return a struct sr_context when the initialization
91 * When libsigrok functionality is no longer needed, sr_exit() should be
92 * called, which will (among other things) free the struct sr_context.
94 * Example for a minimal program using libsigrok:
98 * #include <libsigrok/libsigrok.h>
100 * int main(int argc, char **argv)
103 * struct sr_context *sr_ctx;
105 * if ((ret = sr_init(&sr_ctx)) != SR_OK) {
106 * printf("Error initializing libsigrok (%s): %s.\n",
107 * sr_strerror_name(ret), sr_strerror(ret));
111 * // Use libsigrok functions here...
113 * if ((ret = sr_exit(sr_ctx)) != SR_OK) {
114 * printf("Error shutting down libsigrok (%s): %s.\n",
115 * sr_strerror_name(ret), sr_strerror(ret));
126 SR_API GSList *sr_buildinfo_libs_get(void)
128 GSList *l = NULL, *m = NULL;
129 #if defined(HAVE_LIBUSB_1_0) && !defined(__FreeBSD__)
130 const struct libusb_version *lv;
133 m = g_slist_append(NULL, g_strdup("glib"));
134 m = g_slist_append(m, g_strdup_printf("%d.%d.%d (rt: %d.%d.%d/%d:%d)",
135 GLIB_MAJOR_VERSION, GLIB_MINOR_VERSION, GLIB_MICRO_VERSION,
136 glib_major_version, glib_minor_version, glib_micro_version,
137 glib_binary_age, glib_interface_age));
138 l = g_slist_append(l, m);
140 m = g_slist_append(NULL, g_strdup("zlib"));
141 m = g_slist_append(m, g_strdup_printf("%s", CONF_ZLIB_VERSION));
142 l = g_slist_append(l, m);
144 m = g_slist_append(NULL, g_strdup("libzip"));
145 m = g_slist_append(m, g_strdup_printf("%s", CONF_LIBZIP_VERSION));
146 l = g_slist_append(l, m);
148 m = g_slist_append(NULL, g_strdup("minilzo"));
149 m = g_slist_append(m, g_strdup_printf("%s", lzo_version_string()));
150 l = g_slist_append(l, m);
152 #ifdef HAVE_LIBSERIALPORT
153 m = g_slist_append(NULL, g_strdup("libserialport"));
154 m = g_slist_append(m, g_strdup_printf("%s/%s (rt: %s/%s)",
155 SP_PACKAGE_VERSION_STRING, SP_LIB_VERSION_STRING,
156 sp_get_package_version_string(), sp_get_lib_version_string()));
157 l = g_slist_append(l, m);
159 #ifdef HAVE_LIBUSB_1_0
160 m = g_slist_append(NULL, g_strdup("libusb-1.0"));
162 m = g_slist_append(m, g_strdup_printf("%s", CONF_LIBUSB_1_0_VERSION));
164 lv = libusb_get_version();
165 m = g_slist_append(m, g_strdup_printf("%d.%d.%d.%d%s API 0x%08x",
166 lv->major, lv->minor, lv->micro, lv->nano, lv->rc,
167 #if defined(LIBUSB_API_VERSION)
169 #elif defined(LIBUSBX_API_VERSION)
174 l = g_slist_append(l, m);
176 #ifdef HAVE_LIBHIDAPI
177 m = g_slist_append(NULL, g_strdup("hidapi"));
178 m = g_slist_append(m, g_strdup_printf("%s", CONF_LIBHIDAPI_VERSION));
179 l = g_slist_append(l, m);
182 m = g_slist_append(NULL, g_strdup("bluez"));
183 m = g_slist_append(m, g_strdup_printf("%s", CONF_LIBBLUEZ_VERSION));
184 l = g_slist_append(l, m);
187 m = g_slist_append(NULL, g_strdup("libftdi"));
188 m = g_slist_append(m, g_strdup_printf("%s", CONF_LIBFTDI_VERSION));
189 l = g_slist_append(l, m);
192 m = g_slist_append(NULL, g_strdup("libgpib"));
193 m = g_slist_append(m, g_strdup_printf("%s", CONF_LIBGPIB_VERSION));
194 l = g_slist_append(l, m);
196 #ifdef HAVE_LIBREVISA
197 m = g_slist_append(NULL, g_strdup("librevisa"));
198 m = g_slist_append(m, g_strdup_printf("%s", CONF_LIBREVISA_VERSION));
199 l = g_slist_append(l, m);
205 SR_API char *sr_buildinfo_host_get(void)
207 return g_strdup_printf("%s, %s-endian", CONF_HOST,
208 #ifdef WORDS_BIGENDIAN
216 SR_API char *sr_buildinfo_scpi_backends_get(void)
221 s = g_string_sized_new(200);
223 g_string_append_printf(s, "TCP, ");
225 g_string_append_printf(s, "RPC, ");
227 #ifdef HAVE_SERIAL_COMM
228 g_string_append_printf(s, "serial, ");
230 #ifdef HAVE_LIBREVISA
231 g_string_append_printf(s, "VISA, ");
234 g_string_append_printf(s, "GPIB, ");
236 #ifdef HAVE_LIBUSB_1_0
237 g_string_append_printf(s, "USBTMC, ");
239 s->str[s->len - 2] = '\0';
241 str = g_strdup(s->str);
242 g_string_free(s, TRUE);
247 static void print_versions(void)
250 GSList *l, *l_orig, *m;
252 const char *lib, *version;
254 sr_dbg("libsigrok %s/%s.",
255 sr_package_version_string_get(), sr_lib_version_string_get());
257 s = g_string_sized_new(200);
258 g_string_append(s, "Libs: ");
259 l_orig = sr_buildinfo_libs_get();
260 for (l = l_orig; l; l = l->next) {
263 version = m->next->data;
264 g_string_append_printf(s, "%s %s, ", lib, version);
265 g_slist_free_full(m, g_free);
267 g_slist_free(l_orig);
268 s->str[s->len - 2] = '.';
269 s->str[s->len - 1] = '\0';
270 sr_dbg("%s", s->str);
271 g_string_free(s, TRUE);
273 str = sr_buildinfo_host_get();
274 sr_dbg("Host: %s.", str);
277 str = sr_buildinfo_scpi_backends_get();
278 sr_dbg("SCPI backends: %s.", str);
282 static void print_resourcepaths(void)
286 sr_dbg("Firmware search paths:");
287 l_orig = sr_resourcepaths_get(SR_RESOURCE_FIRMWARE);
288 for (l = l_orig; l; l = l->next)
289 sr_dbg(" - %s", (const char *)l->data);
290 g_slist_free_full(l_orig, g_free);
294 * Sanity-check all libsigrok drivers.
296 * @param[in] ctx Pointer to a libsigrok context struct. Must not be NULL.
298 * @retval SR_OK All drivers are OK
299 * @retval SR_ERR One or more drivers have issues.
300 * @retval SR_ERR_ARG Invalid argument.
302 static int sanity_check_all_drivers(const struct sr_context *ctx)
304 int i, errors, ret = SR_OK;
305 struct sr_dev_driver **drivers;
311 sr_spew("Sanity-checking all drivers.");
313 drivers = sr_driver_list(ctx);
314 for (i = 0; drivers[i]; i++) {
317 d = (drivers[i]->name) ? drivers[i]->name : "NULL";
319 if (!drivers[i]->name) {
320 sr_err("No name in driver %d ('%s').", i, d);
323 if (!drivers[i]->longname) {
324 sr_err("No longname in driver %d ('%s').", i, d);
327 if (drivers[i]->api_version < 1) {
328 sr_err("API version in driver %d ('%s') < 1.", i, d);
331 if (!drivers[i]->init) {
332 sr_err("No init in driver %d ('%s').", i, d);
335 if (!drivers[i]->cleanup) {
336 sr_err("No cleanup in driver %d ('%s').", i, d);
339 if (!drivers[i]->scan) {
340 sr_err("No scan in driver %d ('%s').", i, d);
343 if (!drivers[i]->dev_list) {
344 sr_err("No dev_list in driver %d ('%s').", i, d);
347 if (!drivers[i]->dev_clear) {
348 sr_err("No dev_clear in driver %d ('%s').", i, d);
351 /* Note: config_get() is optional. */
352 if (!drivers[i]->config_set) {
353 sr_err("No config_set in driver %d ('%s').", i, d);
356 /* Note: config_channel_set() is optional. */
357 /* Note: config_commit() is optional. */
358 if (!drivers[i]->config_list) {
359 sr_err("No config_list in driver %d ('%s').", i, d);
362 if (!drivers[i]->dev_open) {
363 sr_err("No dev_open in driver %d ('%s').", i, d);
366 if (!drivers[i]->dev_close) {
367 sr_err("No dev_close in driver %d ('%s').", i, d);
370 if (!drivers[i]->dev_acquisition_start) {
371 sr_err("No dev_acquisition_start in driver %d ('%s').",
375 if (!drivers[i]->dev_acquisition_stop) {
376 sr_err("No dev_acquisition_stop in driver %d ('%s').",
381 /* Note: 'priv' is allowed to be NULL. */
393 * Sanity-check all libsigrok input modules.
395 * @retval SR_OK All modules are OK
396 * @retval SR_ERR One or more modules have issues.
398 static int sanity_check_all_input_modules(void)
400 int i, errors, ret = SR_OK;
401 const struct sr_input_module **inputs;
404 sr_spew("Sanity-checking all input modules.");
406 inputs = sr_input_list();
407 for (i = 0; inputs[i]; i++) {
410 d = (inputs[i]->id) ? inputs[i]->id : "NULL";
412 if (!inputs[i]->id) {
413 sr_err("No ID in module %d ('%s').", i, d);
416 if (!inputs[i]->name) {
417 sr_err("No name in module %d ('%s').", i, d);
420 if (!inputs[i]->desc) {
421 sr_err("No description in module %d ('%s').", i, d);
424 if (!inputs[i]->init) {
425 sr_err("No init in module %d ('%s').", i, d);
428 if (!inputs[i]->receive) {
429 sr_err("No receive in module %d ('%s').", i, d);
432 if (!inputs[i]->end) {
433 sr_err("No end in module %d ('%s').", i, d);
447 * Sanity-check all libsigrok output modules.
449 * @retval SR_OK All modules are OK
450 * @retval SR_ERR One or more modules have issues.
452 static int sanity_check_all_output_modules(void)
454 int i, errors, ret = SR_OK;
455 const struct sr_output_module **outputs;
458 sr_spew("Sanity-checking all output modules.");
460 outputs = sr_output_list();
461 for (i = 0; outputs[i]; i++) {
464 d = (outputs[i]->id) ? outputs[i]->id : "NULL";
466 if (!outputs[i]->id) {
467 sr_err("No ID in module %d ('%s').", i, d);
470 if (!outputs[i]->name) {
471 sr_err("No name in module %d ('%s').", i, d);
474 if (!outputs[i]->desc) {
475 sr_err("No description in module '%s'.", d);
478 if (!outputs[i]->receive) {
479 sr_err("No receive in module '%s'.", d);
493 * Sanity-check all libsigrok transform modules.
495 * @retval SR_OK All modules are OK
496 * @retval SR_ERR One or more modules have issues.
498 static int sanity_check_all_transform_modules(void)
500 int i, errors, ret = SR_OK;
501 const struct sr_transform_module **transforms;
504 sr_spew("Sanity-checking all transform modules.");
506 transforms = sr_transform_list();
507 for (i = 0; transforms[i]; i++) {
510 d = (transforms[i]->id) ? transforms[i]->id : "NULL";
512 if (!transforms[i]->id) {
513 sr_err("No ID in module %d ('%s').", i, d);
516 if (!transforms[i]->name) {
517 sr_err("No name in module %d ('%s').", i, d);
520 if (!transforms[i]->desc) {
521 sr_err("No description in module '%s'.", d);
524 /* Note: options() is optional. */
525 /* Note: init() is optional. */
526 if (!transforms[i]->receive) {
527 sr_err("No receive in module '%s'.", d);
530 /* Note: cleanup() is optional. */
542 * Initialize libsigrok.
544 * This function must be called before any other libsigrok function.
546 * @param ctx Pointer to a libsigrok context struct pointer. Must not be NULL.
547 * This will be a pointer to a newly allocated libsigrok context
548 * object upon success, and is undefined upon errors.
550 * @return SR_OK upon success, a (negative) error code otherwise. Upon errors
551 * the 'ctx' pointer is undefined and should not be used. Upon success,
552 * the context will be free'd by sr_exit() as part of the libsigrok
557 SR_API int sr_init(struct sr_context **ctx)
560 struct sr_context *context;
567 print_resourcepaths();
570 sr_err("%s(): libsigrok context was NULL.", __func__);
574 context = g_malloc0(sizeof(struct sr_context));
576 sr_drivers_init(context);
578 if (sanity_check_all_drivers(context) < 0) {
579 sr_err("Internal driver error(s), aborting.");
583 if (sanity_check_all_input_modules() < 0) {
584 sr_err("Internal input module error(s), aborting.");
588 if (sanity_check_all_output_modules() < 0) {
589 sr_err("Internal output module error(s), aborting.");
593 if (sanity_check_all_transform_modules() < 0) {
594 sr_err("Internal transform module error(s), aborting.");
599 if ((ret = WSAStartup(MAKEWORD(2, 2), &wsadata)) != 0) {
600 sr_err("WSAStartup failed with error code %d.", ret);
606 if ((ret = lzo_init()) != LZO_E_OK) {
607 sr_err("lzo_init() failed with return code %d.", ret);
608 sr_err("This usually indicates a compiler bug. Recompile without");
609 sr_err("optimizations, and enable '-DLZO_DEBUG' for diagnostics.");
614 #ifdef HAVE_LIBUSB_1_0
615 ret = libusb_init(&context->libusb_ctx);
616 if (LIBUSB_SUCCESS != ret) {
617 sr_err("libusb_init() returned %s.", libusb_error_name(ret));
622 #ifdef HAVE_LIBHIDAPI
624 * According to <hidapi.h>, the hid_init() routine just returns
625 * zero or non-zero, and hid_error() appears to relate to calls
626 * for a specific device after hid_open(). Which means that there
627 * is no more detailled information available beyond success/fail
628 * at this point in time.
630 if (hid_init() != 0) {
631 sr_err("HIDAPI hid_init() failed.");
636 sr_resource_set_hooks(context, NULL, NULL, NULL, NULL);
648 * Shutdown libsigrok.
650 * @param ctx Pointer to a libsigrok context struct. Must not be NULL.
652 * @retval SR_OK Success
653 * @retval other Error code SR_ERR, ...
657 SR_API int sr_exit(struct sr_context *ctx)
660 sr_err("%s(): libsigrok context was NULL.", __func__);
664 sr_hw_cleanup_all(ctx);
670 #ifdef HAVE_LIBHIDAPI
673 #ifdef HAVE_LIBUSB_1_0
674 libusb_exit(ctx->libusb_ctx);
677 g_free(sr_driver_list(ctx));