From efa92aaed21cbaa80f4bc88a0ef9bb6bbb7aa3ee Mon Sep 17 00:00:00 2001
From: gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4>
Date: Wed, 4 Jan 2012 08:46:11 +0000
Subject: Realtime counter support in the generic HAL driver and
 implementations for al STM32 devices, others will follow.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@3723 35acf78f-673a-0410-8e92-d51de3d6d3f4
---
 os/hal/platforms/STM32F2xx/hal_lld.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'os/hal/platforms/STM32F2xx/hal_lld.c')

diff --git a/os/hal/platforms/STM32F2xx/hal_lld.c b/os/hal/platforms/STM32F2xx/hal_lld.c
index 2b3894bdd..2344d161f 100644
--- a/os/hal/platforms/STM32F2xx/hal_lld.c
+++ b/os/hal/platforms/STM32F2xx/hal_lld.c
@@ -71,6 +71,9 @@ void hal_lld_init(void) {
                   SysTick_CTRL_ENABLE_Msk |
                   SysTick_CTRL_TICKINT_Msk;
 
+  /* DWT cycle counter enable.*/
+  DWT_CTRL |= DWT_CTRL_CYCCNTENA;
+
 #if STM32_PVD_ENABLE
   /* Programmable voltage detector initialization */
   PWR->CR |= PWR_CR_PVDE | (STM32_PLS & STM32_PLS_MASK);
-- 
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