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A bundled STM32F10x Std Periph and CMSIS library
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STM32F10x_Std_Lib/CMSIS/Device/ARM/ARMSC300/Source/system_ARMSC300.c

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  1. /**************************************************************************//**

  2.  * @file     system_ARMSC300.c

  3.  * @brief    CMSIS Device System Source File for

  4.  *           ARMSC300 Device Series

  5.  * @version  V1.07

  6.  * @date     30. January 2012

  7.  *

  8.  * @note

  9.  * Copyright (C) 2012 ARM Limited. All rights reserved.

  10.  *

  11.  * @par

  12.  * ARM Limited (ARM) is supplying this software for use with Cortex-M 

  13.  * processor based microcontrollers.  This file can be freely distributed 

  14.  * within development tools that are supporting such ARM based processors. 

  15.  *

  16.  * @par

  17.  * THIS SOFTWARE IS PROVIDED "AS IS".  NO WARRANTIES, WHETHER EXPRESS, IMPLIED

  18.  * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF

  19.  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.

  20.  * ARM SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR

  21.  * CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.

  22.  *

  23.  ******************************************************************************/

  24. 

  25. #include "ARMSC300.h"

  26. 

  27. /*----------------------------------------------------------------------------

  28.   Define clocks

  29.  *----------------------------------------------------------------------------*/

  30. #define __HSI             ( 8000000UL)

  31. #define __XTAL            ( 5000000UL)    /* Oscillator frequency             */

  32. 

  33. #define __SYSTEM_CLOCK    (5*__XTAL)

  34. 

  35. 

  36. /*----------------------------------------------------------------------------

  37.   Clock Variable definitions

  38.  *----------------------------------------------------------------------------*/

  39. uint32_t SystemCoreClock = __SYSTEM_CLOCK;/*!< System Clock Frequency (Core Clock)*/

  40. 

  41. 

  42. /*----------------------------------------------------------------------------

  43.   Clock functions

  44.  *----------------------------------------------------------------------------*/

  45. void SystemCoreClockUpdate (void)            /* Get Core Clock Frequency      */

  46. {

  47. 

  48.   SystemCoreClock = __SYSTEM_CLOCK;

  49. 

  50. }

  51. 

  52. /**

  53.  * Initialize the system

  54.  *

  55.  * @param  none

  56.  * @return none

  57.  *

  58.  * @brief  Setup the microcontroller system.

  59.  *         Initialize the System.

  60.  */

  61. void SystemInit (void)

  62. {

  63. 

  64.   SystemCoreClock = __SYSTEM_CLOCK;

  65. 

  66. }