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- /**************************************************************************//**
- * @file system_ARMCM3.c
- * @brief CMSIS Device System Source File for
- * ARMCM3 Device Series
- * @version V1.08
- * @date 23. November 2012
- *
- * @note
- *
- ******************************************************************************/
- /* Copyright (c) 2011 - 2012 ARM LIMITED
- All rights reserved.
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions are met:
- - Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
- - 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.
- - Neither the name of ARM nor the names of its contributors may be used
- to endorse or promote products derived from this software without
- specific prior written permission.
- *
- 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 COPYRIGHT HOLDERS AND 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.
- ---------------------------------------------------------------------------*/
- #include "ARMCM3.h"
- /*----------------------------------------------------------------------------
- Define clocks
- *----------------------------------------------------------------------------*/
- #define __HSI ( 8000000UL)
- #define __XTAL ( 5000000UL) /* Oscillator frequency */
- #define __SYSTEM_CLOCK (5*__XTAL)
- /*----------------------------------------------------------------------------
- Clock Variable definitions
- *----------------------------------------------------------------------------*/
- uint32_t SystemCoreClock = __SYSTEM_CLOCK;/*!< System Clock Frequency (Core Clock)*/
- /*----------------------------------------------------------------------------
- Clock functions
- *----------------------------------------------------------------------------*/
- void SystemCoreClockUpdate (void) /* Get Core Clock Frequency */
- {
- SystemCoreClock = __SYSTEM_CLOCK;
- }
- /**
- * Initialize the system
- *
- * @param none
- * @return none
- *
- * @brief Setup the microcontroller system.
- * Initialize the System.
- */
- void SystemInit (void)
- {
- #ifdef UNALIGNED_SUPPORT_DISABLE
- SCB->CCR |= SCB_CCR_UNALIGN_TRP_Msk;
- #endif
- SystemCoreClock = __SYSTEM_CLOCK;
- }
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