4 files changed, 50 insertions, 0 deletions
diff --git a/controller.c b/controller.c
index 44fd6c7..e35b8be 100644
--- a/controller.c
+++ b/controller.c
@@ -265,6 +265,16 @@ SRD_PRIV int srd_decoder_searchpath_add(const char *path)
 	return SRD_OK;
 }
 
+/** @} */
+
+/**
+ * @defgroup grp_instances Decoder instances
+ *
+ * Decoder instance handling.
+ *
+ * @{
+ */
+
 /**
  * Set one or more options in a decoder instance.
  *
@@ -792,6 +802,16 @@ SRD_PRIV void srd_inst_free_all(GSList *stack)
 	}
 }
 
+/** @} */
+
+/**
+ * @defgroup grp_session Session handling
+ *
+ * Starting and handling decoding sessions.
+ *
+ * @{
+ */
+
 /**
  * Start a decoding session.
  *
diff --git a/decoder.c b/decoder.c
index 34e3d95..3d20b26 100644
--- a/decoder.c
+++ b/decoder.c
@@ -29,6 +29,14 @@
  * Listing, loading, unloading, and handling protocol decoders.
  */
 
+/**
+ * @defgroup grp_decoder Protocol decoders
+ *
+ * Handling protocol decoders.
+ *
+ * @{
+ */
+
 /** @cond PRIVATE */
 
 /* The list of protocol decoders. */
@@ -432,3 +440,5 @@ SRD_API int srd_decoder_unload_all(void)
 
 	return SRD_OK;
 }
+
+/** @} */
diff --git a/log.c b/log.c
index e68014c..95e3535 100644
--- a/log.c
+++ b/log.c
@@ -29,6 +29,14 @@
  * Controlling the libsigrokdecode message logging functionality.
  */
 
+/**
+ * @defgroup grp_logging Logging
+ *
+ * Controlling the libsigrokdecode message logging functionality.
+ *
+ * @{
+ */
+
 /* Currently selected libsigrokdecode loglevel. Default: SRD_LOG_WARN. */
 static int srd_loglevel = SRD_LOG_WARN; /* Show errors+warnings per default. */
 
@@ -283,3 +291,5 @@ SRD_PRIV int srd_err(const char *format, ...)
 
 	return ret;
 }
+
+/** @} */
diff --git a/version.c b/version.c
index 55ad776..1f9c98e 100644
--- a/version.c
+++ b/version.c
@@ -26,6 +26,14 @@
  * Version number querying functions.
  */
 
+/**
+ * @defgroup grp_versions Versions
+ *
+ * Version number querying functions.
+ *
+ * @{
+ */
+
 SRD_API int srd_package_version_major_get(void)
 {
 	return SRD_PACKAGE_VERSION_MAJOR;
@@ -65,3 +73,5 @@ SRD_API const char *srd_lib_version_string_get(void)
 {
 	return SRD_LIB_VERSION_STRING;
 }
+
+/** @} */