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Diffstat (limited to 'include/libopencm3/stm32/f1/rtc.h')
-rw-r--r--include/libopencm3/stm32/f1/rtc.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/libopencm3/stm32/f1/rtc.h b/include/libopencm3/stm32/f1/rtc.h
index 04aea01..a8a8966 100644
--- a/include/libopencm3/stm32/f1/rtc.h
+++ b/include/libopencm3/stm32/f1/rtc.h
@@ -17,6 +17,11 @@
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
+/*
+ * The F1 RTC is a straight timestamp, a completely different peripheral to
+ * that found in the F2, F3, F4, L1 and F0.
+ */
+
#ifndef LIBOPENCM3_RTC_H
#define LIBOPENCM3_RTC_H