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  1. /**
  2.   ******************************************************************************
  3.   * @file    system_stm32l1xx.h
  4.   * @author  MCD Application Team
  5.   * @version V2.2.0
  6.   * @date    01-July-2016
  7.   * @brief   CMSIS Cortex-M3 Device System Source File for STM32L1xx devices.  
  8.   ******************************************************************************
  9.   * @attention
  10.   *
  11.   * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
  12.   *
  13.   * Redistribution and use in source and binary forms, with or without modification,
  14.   * are permitted provided that the following conditions are met:
  15.   *   1. Redistributions of source code must retain the above copyright notice,
  16.   *      this list of conditions and the following disclaimer.
  17.   *   2. Redistributions in binary form must reproduce the above copyright notice,
  18.   *      this list of conditions and the following disclaimer in the documentation
  19.   *      and/or other materials provided with the distribution.
  20.   *   3. Neither the name of STMicroelectronics nor the names of its contributors
  21.   *      may be used to endorse or promote products derived from this software
  22.   *      without specific prior written permission.
  23.   *
  24.   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  25.   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26.   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  27.   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  28.   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29.   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  30.   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  31.   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  32.   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  33.   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  34.   *
  35.   ******************************************************************************
  36.   */
  37.  
  38. /** @addtogroup CMSIS
  39.   * @{
  40.   */
  41.  
  42. /** @addtogroup stm32l1xx_system
  43.   * @{
  44.   */  
  45.  
  46. /**
  47.   * @brief Define to prevent recursive inclusion
  48.   */
  49. #ifndef __SYSTEM_STM32L1XX_H
  50. #define __SYSTEM_STM32L1XX_H
  51.  
  52. #ifdef __cplusplus
  53.  extern "C" {
  54. #endif
  55.  
  56. /** @addtogroup STM32L1xx_System_Includes
  57.   * @{
  58.   */
  59.  
  60. /**
  61.   * @}
  62.   */
  63.  
  64.  
  65. /** @addtogroup STM32L1xx_System_Exported_types
  66.   * @{
  67.   */
  68.   /* This variable is updated in three ways:
  69.       1) by calling CMSIS function SystemCoreClockUpdate()
  70.       2) by calling HAL API function HAL_RCC_GetSysClockFreq()
  71.       3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
  72.          Note: If you use this function to configure the system clock; then there
  73.                is no need to call the 2 first functions listed above, since SystemCoreClock
  74.                variable is updated automatically.
  75.   */
  76. extern uint32_t SystemCoreClock;          /*!< System Clock Frequency (Core Clock) */
  77. /*
  78. */
  79. extern const uint8_t AHBPrescTable[16];   /*!< AHB prescalers table values */
  80. extern const uint8_t APBPrescTable[8];    /*!< APB prescalers table values */
  81. extern const uint8_t PLLMulTable[9];      /*!< PLL multipiers table values */
  82.  
  83. /**
  84.   * @}
  85.   */
  86.  
  87. /** @addtogroup STM32L1xx_System_Exported_Constants
  88.   * @{
  89.   */
  90.  
  91. /**
  92.   * @}
  93.   */
  94.  
  95. /** @addtogroup STM32L1xx_System_Exported_Macros
  96.   * @{
  97.   */
  98.  
  99. /**
  100.   * @}
  101.   */
  102.  
  103. /** @addtogroup STM32L1xx_System_Exported_Functions
  104.   * @{
  105.   */
  106.  
  107. extern void SystemInit(void);
  108. extern void SystemCoreClockUpdate(void);
  109. /**
  110.   * @}
  111.   */
  112.  
  113. #ifdef __cplusplus
  114. }
  115. #endif
  116.  
  117. #endif /*__SYSTEM_STM32L1XX_H */
  118.  
  119. /**
  120.   * @}
  121.   */
  122.  
  123. /**
  124.   * @}
  125.   */  
  126. /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  127.