Add printers for wind speed, pressure and humidity at 293 kelvin.

[libsigrok.git] / backend.c

diff --git a/backend.c b/backend.c
index 42817158f4f11e877a53343280e66bbdbd56b342..ab668efa800576dacfe8379e64c868b83772dc7c 100644 (file)
--- a/backend.c
+++ b/backend.c
@@ -23,6 +23,10 @@
 #include "libsigrok.h"
 #include "libsigrok-internal.h"
 
+/** @cond PRIVATE */
+#define LOG_PREFIX "backend"
+/** @endcond */
+
 extern struct sr_session *session;
 
 /**
@@ -77,7 +81,8 @@ extern struct sr_session *session;
  *
  * Initializing and shutting down libsigrok.
  *
- * Before using any of the libsigrok functionality, sr_init() must
+ * Before using any of the libsigrok functionality (except
+ * sr_log_loglevel_set() and sr_log_opts_set()), sr_init() must
  * be called to initialize the library, which will return a struct sr_context
  * when the initialization was successful.
  *
@@ -96,7 +101,7 @@ extern struct sr_session *session;
  *     struct sr_context *sr_ctx;
  *
  *     if ((ret = sr_init(&sr_ctx)) != SR_OK) {
- *             printf("Error initializing libsigrok (%s): %s.",
+ *             printf("Error initializing libsigrok (%s): %s.\n",
  *                    sr_strerror_name(ret), sr_strerror(ret));
  *             return 1;
  *     }
@@ -104,7 +109,7 @@ extern struct sr_session *session;
  *     // Use libsigrok functions here...
  *
  *     if ((ret = sr_exit(sr_ctx)) != SR_OK) {
- *             printf("Error shutting down libsigrok (%s): %s.",
+ *             printf("Error shutting down libsigrok (%s): %s.\n",
  *                    sr_strerror_name(ret), sr_strerror(ret));
  *             return 1;
  *     }
@@ -119,7 +124,8 @@ extern struct sr_session *session;
 /**
  * Sanity-check all libsigrok drivers.
  *
- * @return SR_OK if all drivers are OK, SR_ERR if one or more have issues.
+ * @retval SR_OK All drivers are OK
+ * @retval SR_ERR One or more drivers have issues.
  */
 static int sanity_check_all_drivers(void)
 {
@@ -163,10 +169,6 @@ static int sanity_check_all_drivers(void)
                        sr_err("No dev_list in driver %d ('%s').", i, d);
                        errors++;
                }
-               if (!drivers[i]->dev_clear) {
-                       sr_err("No dev_clear in driver %d ('%s').", i, d);
-                       errors++;
-               }
                /* Note: config_get() is optional. */
                if (!drivers[i]->config_set) {
                        sr_err("No config_set in driver %d ('%s').", i, d);
@@ -209,7 +211,8 @@ static int sanity_check_all_drivers(void)
 /**
  * Sanity-check all libsigrok input modules.
  *
- * @return SR_OK if all modules are OK, SR_ERR if one or more have issues.
+ * @retval SR_OK All modules are OK
+ * @retval SR_ERR One or more modules have issues.
  */
 static int sanity_check_all_input_modules(void)
 {
@@ -258,7 +261,8 @@ static int sanity_check_all_input_modules(void)
 /**
  * Sanity-check all libsigrok output modules.
  *
- * @return SR_OK if all modules are OK, SR_ERR if one or more have issues.
+ * @retval SR_OK All modules are OK
+ * @retval SR_ERR One or more modules have issues.
  */
 static int sanity_check_all_output_modules(void)
 {
@@ -279,26 +283,14 @@ static int sanity_check_all_output_modules(void)
                        errors++;
                }
                if (!outputs[i]->description) {
-                       sr_err("No description in module %d ('%s').", i, d);
+                       sr_err("No description in module '%s'.", d);
                        errors++;
                }
-               if (outputs[i]->df_type < 10000 || outputs[i]->df_type > 10007) {
-                       sr_err("Invalid df_type %d in module %d ('%s').",
-                              outputs[i]->df_type, i, d);
+               if (!outputs[i]->receive) {
+                       sr_err("No receive in module '%s'.", d);
                        errors++;
                }
 
-               /* All modules must provide a data or recv API callback. */
-               if (!outputs[i]->data && !outputs[i]->receive) {
-                       sr_err("No data/receive in module %d ('%s').", i, d);
-                       errors++;
-               }
-
-               /*
-                * Currently most API calls are optional (their function
-                * pointers can thus be NULL) in theory: init, event, cleanup.
-                */
-
                if (errors == 0)
                        continue;
 
@@ -322,7 +314,7 @@ static int sanity_check_all_output_modules(void)
  *         the context will be free'd by sr_exit() as part of the libsigrok
  *         shutdown.
  *
- * @since 0.1.0 (but the API changed in 0.2.0)
+ * @since 0.2.0
  */
 SR_API int sr_init(struct sr_context **ctx)
 {
@@ -360,7 +352,7 @@ SR_API int sr_init(struct sr_context **ctx)
 #ifdef HAVE_LIBUSB_1_0
        ret = libusb_init(&context->libusb_ctx);
        if (LIBUSB_SUCCESS != ret) {
-               sr_err("libusb_init() returned %s.\n", libusb_error_name(ret));
+               sr_err("libusb_init() returned %s.", libusb_error_name(ret));
                ret = SR_ERR;
                goto done;
        }
@@ -382,9 +374,10 @@ done:
  *
  * @param ctx Pointer to a libsigrok context struct. Must not be NULL.
  *
- * @return SR_OK upon success, a (negative) error code otherwise.
+ * @retval SR_OK Success
+ * @retval other Error code SR_ERR, ...
  *
- * @since 0.1.0 (but the API changed in 0.2.0)
+ * @since 0.2.0
  */
 SR_API int sr_exit(struct sr_context *ctx)
 {