diff --git a/lib/stm32/l1/rcc.c b/lib/stm32/l1/rcc.c
index 7a7d8ccb..ee5618bd 100644
--- a/lib/stm32/l1/rcc.c
+++ b/lib/stm32/l1/rcc.c
@@ -1,3 +1,20 @@
+/** @defgroup STM32L1xx-rcc-file RCC
+
+@ingroup STM32L1xx
+
+@brief libopencm3 STM32F1xx Reset and Clock Control
+
+@version 1.0.0
+
+This library supports the Reset and Clock Control System in the STM32L1xx
+series of ARM Cortex Microcontrollers by ST Microelectronics.
+
+Clock settings and resets for many peripherals are given here rather than in
+the corresponding peripheral library.
+
+The library also provides a number of common configurations for the processor
+system clock. Not all possible configurations are included.
+ */
/*
* This file is part of the libopencm3 project.
*
@@ -20,6 +37,7 @@
* along with this library. If not, see .
* Based on the F4 code...
*/
+/**@{*/
#include
#include
@@ -538,3 +556,5 @@ void rcc_clock_setup_pll(const clock_scale_t *clock)
rcc_apb1_frequency = clock->apb1_frequency;
rcc_apb2_frequency = clock->apb2_frequency;
}
+
+/**@}*/