1 files changed, 16 insertions, 0 deletions
diff --git a/lib/pbdrv/pb-buf.h b/lib/pbdrv/pb-buf.h
index 78ee380..049f516 100644
--- a/lib/pbdrv/pb-buf.h
+++ b/lib/pbdrv/pb-buf.h
@@ -6,14 +6,30 @@
 extern "C" {
 #endif
 
+/**
+ * \ingroup pbdrv
+ * \ingroup pbdrv-mod
+ * \defgroup pb_buf Buffer
+ * \brief Binary data buffer type used in pbdrv
+ * \{
+ */
+
 //! binary buffer struct
 typedef struct {
 	char * data; //! pointer to data
 	size_t size; //! size of data
 } pb_buf_t;
 
+/**
+ * \brief free a \c pb_buf_t
+ *
+ * This function calls \c pb_free() on the \c data member of a \c pb_buf_t
+ * struct if it is not equal to \c NULL.
+ */
 void pb_buf_free(pb_buf_t * buf);
 
+/// \}
+
 #ifdef __cplusplus
 }
 #endif