1 files changed, 32 insertions, 15 deletions
diff --git a/os/ext/CMSIS/ST/system_stm32f0xx.h b/os/ext/CMSIS/ST/system_stm32f0xx.h
index e9335b9c5..386000ce3 100644
--- a/os/ext/CMSIS/ST/system_stm32f0xx.h
+++ b/os/ext/CMSIS/ST/system_stm32f0xx.h
@@ -2,25 +2,35 @@
   ******************************************************************************
   * @file    system_stm32f0xx.h
   * @author  MCD Application Team
-  * @version V1.2.1
-  * @date    22-November-2013
-  * @brief   CMSIS Cortex-M0 Device Peripheral Access Layer System Header File.
+  * @version V2.0.1
+  * @date    18-June-2014
+  * @brief   CMSIS Cortex-M0 Device System Source File for STM32F0xx devices.  
   ******************************************************************************
   * @attention
   *
-  * <h2><center>&copy; COPYRIGHT 2013 STMicroelectronics</center></h2>
+  * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
   *
-  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
-  * You may not use this file except in compliance with the License.
-  * You may obtain a copy of the License at:
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. Redistributions in binary form must reproduce the above copyright notice,
+  *      this list of conditions and the following disclaimer in the documentation
+  *      and/or other materials provided with the distribution.
+  *   3. Neither the name of STMicroelectronics nor the names of its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
   *
-  *        http://www.st.com/software_license_agreement_liberty_v2
-  *
-  * Unless required by applicable law or agreed to in writing, software 
-  * distributed under the License is distributed on an "AS IS" BASIS, 
-  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  * See the License for the specific language governing permissions and
-  * limitations under the License.
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   ******************************************************************************
   */
@@ -55,7 +65,14 @@
 /** @addtogroup STM32F0xx_System_Exported_types
   * @{
   */
-
+  /* This variable is updated in three ways:
+      1) by calling CMSIS function SystemCoreClockUpdate()
+      3) by calling HAL API function HAL_RCC_GetHCLKFreq()
+      3) by calling HAL API function HAL_RCC_ClockConfig()
+         Note: If you use this function to configure the system clock; then there
+               is no need to call the 2 first functions listed above, since SystemCoreClock
+               variable is updated automatically.
+  */
 extern uint32_t SystemCoreClock;          /*!< System Clock Frequency (Core Clock) */
 
 /**