From 0db56fc105f39b7652254199e754fba58bb3b1f6 Mon Sep 17 00:00:00 2001
From: Giovanni Di Sirio <gdisirio@gmail.com>
Date: Thu, 12 Jan 2017 10:27:42 +0000
Subject: Fixed RTC clock enable on some F4 devices.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@10036 35acf78f-673a-0410-8e92-d51de3d6d3f4
---
 os/hal/ports/STM32/STM32F4xx/hal_lld.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'os/hal')

diff --git a/os/hal/ports/STM32/STM32F4xx/hal_lld.c b/os/hal/ports/STM32/STM32F4xx/hal_lld.c
index 91e3c1367..69767e8c4 100644
--- a/os/hal/ports/STM32/STM32F4xx/hal_lld.c
+++ b/os/hal/ports/STM32/STM32F4xx/hal_lld.c
@@ -150,7 +150,11 @@ void stm32_clock_init(void) {
 
 #if !STM32_NO_INIT
   /* PWR clock enable.*/
+#if defined(HAL_USE_RTC) && defined(RCC_APB1ENR_RTCAPBEN)
+  RCC->APB1ENR = RCC_APB1ENR_PWREN | RCC_APB1ENR_RTCAPBEN;
+#else
   RCC->APB1ENR = RCC_APB1ENR_PWREN;
+#endif
 
   /* PWR initialization.*/
 #if defined(STM32F4XX) || defined(__DOXYGEN__)
-- 
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