4 files changed, 40 insertions, 8 deletions
diff --git a/os/various/chprintf.c b/os/various/chprintf.c
index 7b02ab3ba..78a4a8ac1 100644
--- a/os/various/chprintf.c
+++ b/os/various/chprintf.c
@@ -264,3 +264,5 @@ unsigned_common:
     }
   }
 }
+
+/** @} */
diff --git a/os/various/chrtclib.c b/os/various/chrtclib.c
index f76f91d65..1a0a5487d 100644
--- a/os/various/chrtclib.c
+++ b/os/various/chrtclib.c
@@ -22,6 +22,14 @@
    aka barthess.
  */
 
+/**
+ * @file    chrtclib.c
+ * @brief   RTC time conversion utilities code.
+ *
+ * @addtogroup chrtclib
+ * @{
+ */
+
 #include <time.h>
 
 #include "ch.h"
@@ -31,7 +39,7 @@
 
 #if (defined(STM32F4XX) || defined(STM32F2XX) || defined(STM32L1XX) || \
      defined(STM32F1XX) || defined(STM32F10X_MD) || defined(STM32F10X_LD) || \
-     defined(STM32F10X_HD))
+     defined(STM32F10X_HD) || defined(__DOXYGEN__))
 #if STM32_RTC_IS_CALENDAR
 /**
  * @brief   Converts from STM32 BCD to canonicalized time format.
@@ -194,6 +202,7 @@ time_t rtcGetTimeUnixSec(RTCDriver *rtcp) {
  * @brief   Sets RTC time.
  *
  * @param[in] rtcp      pointer to RTC driver structure
+ * @param[in] tv_sec    time specification
  * @return              Unix time value in seconds.
  *
  * @api
@@ -285,6 +294,7 @@ time_t rtcGetTimeUnixSec(RTCDriver *rtcp) {
  * @brief   Sets RTC time.
  *
  * @param[in] rtcp      pointer to RTC driver structure
+ * @param[in] tv_sec    time specification
  * @return              Unix time value in seconds.
  *
  * @api
@@ -342,3 +352,5 @@ uint32_t rtcGetTimeFat(RTCDriver *rtcp) {
   fattime |= (timp->tm_year - 80) << 25;
   return fattime;
 }
+
+/** @} */
diff --git a/os/various/chrtclib.h b/os/various/chrtclib.h
index 7b3493636..c41706f87 100644
--- a/os/various/chrtclib.h
+++ b/os/various/chrtclib.h
@@ -22,19 +22,19 @@
    aka barthess.
  */
 
-#ifndef CHRTCLIB_H_
-#define CHRTCLIB_H_
-
-#include <time.h>
-
 /**
  * @file    chrtclib.h
- * @brief   Various time conversion functionality.
+ * @brief   RTC time conversion utilities header.
  *
  * @addtogroup chrtclib
  * @{
  */
 
+#ifndef CHRTCLIB_H_
+#define CHRTCLIB_H_
+
+#include <time.h>
+
 /*===========================================================================*/
 /* External declarations.                                                    */
 /*===========================================================================*/
diff --git a/os/various/various.dox b/os/various/various.dox
index d221c9af5..ac833a7e0 100644
--- a/os/various/various.dox
+++ b/os/various/various.dox
@@ -75,7 +75,25 @@
  */
 
 /**
- * @defgroup lis302dl Interface module for LIS302DL MEMS.
+ * @defgroup chrtclib RTC time conversion utilities
+ *
+ * @brief   RTC time conversion utilities.
+ *
+ * @ingroup various
+ */
+
+/**
+ * @defgroup chprintf System formatted print
+ *
+ * @brief   System formatted print service.
+ * @details This module implements printf()-like function able to send data
+ *          to any module implementing a @p BaseSequentialStream interface.
+ *
+ * @ingroup various
+ */
+
+/**
+ * @defgroup lis302dl Interface module for LIS302DL MEMS
  *
  * @brief   Interface module for LIS302DL MEMS.
  * @details This module implements a generic interface for the LIS302DL