added prescaler for 16 bit pwm in LPC1347 target
Fork of mbed-dev by
Diff: targets/cmsis/TARGET_ARM_SSG/TARGET_MPS2_M4/system_CMSDK_CM4.c
- Revision:
- 144:ef7eb2e8f9f7
- Parent:
- 80:bdf1132a57cf
diff -r 423e1876dc07 -r ef7eb2e8f9f7 targets/cmsis/TARGET_ARM_SSG/TARGET_MPS2_M4/system_CMSDK_CM4.c --- a/targets/cmsis/TARGET_ARM_SSG/TARGET_MPS2_M4/system_CMSDK_CM4.c Tue Aug 02 14:07:36 2016 +0000 +++ b/targets/cmsis/TARGET_ARM_SSG/TARGET_MPS2_M4/system_CMSDK_CM4.c Fri Sep 02 15:07:44 2016 +0100 @@ -1,96 +1,96 @@ -/* MPS2 CMSIS Library -* -* Copyright (c) 2006-2016 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: -* -* 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 the copyright holder 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 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. -******************************************************************************* -* @file system_CMSDK_CM4.c -* @brief CMSIS Device System Source File for -* CMSDK_M4 Device -* -*******************************************************************************/ - - -#include "CMSDK_CM4.h" - -/*---------------------------------------------------------------------------- - Define clocks - *----------------------------------------------------------------------------*/ -#define __XTAL (50000000UL) /* Oscillator frequency */ - -#define __SYSTEM_CLOCK (__XTAL / 2) - - -/*---------------------------------------------------------------------------- - Clock Variable definitions - *----------------------------------------------------------------------------*/ -uint32_t SystemCoreClock = __SYSTEM_CLOCK;/*!< System Clock Frequency (Core Clock)*/ - - -/*---------------------------------------------------------------------------- - Clock functions - *----------------------------------------------------------------------------*/ -/** - * Update SystemCoreClock variable - * - * @param none - * @return none - * - * @brief Updates the SystemCoreClock with current core Clock - * retrieved from cpu registers. - */ -void SystemCoreClockUpdate (void) -{ - - SystemCoreClock = __SYSTEM_CLOCK; - -} - -/** - * Initialize the system - * - * @param none - * @return none - * - * @brief Setup the microcontroller system. - * Initialize the System. - */ -void SystemInit (void) -{ - #if (__FPU_USED == 1) - SCB->CPACR |= ((3UL << 10*2) | /* set CP10 Full Access */ - (3UL << 11*2) ); /* set CP11 Full Access */ - #endif - -#ifdef UNALIGNED_SUPPORT_DISABLE - SCB->CCR |= SCB_CCR_UNALIGN_TRP_Msk; -#endif - - SystemCoreClock = __SYSTEM_CLOCK; - -} +/* MPS2 CMSIS Library +* +* Copyright (c) 2006-2016 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: +* +* 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 the copyright holder 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 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. +******************************************************************************* +* @file system_CMSDK_CM4.c +* @brief CMSIS Device System Source File for +* CMSDK_M4 Device +* +*******************************************************************************/ + + +#include "CMSDK_CM4.h" + +/*---------------------------------------------------------------------------- + Define clocks + *----------------------------------------------------------------------------*/ +#define __XTAL (50000000UL) /* Oscillator frequency */ + +#define __SYSTEM_CLOCK (__XTAL / 2) + + +/*---------------------------------------------------------------------------- + Clock Variable definitions + *----------------------------------------------------------------------------*/ +uint32_t SystemCoreClock = __SYSTEM_CLOCK;/*!< System Clock Frequency (Core Clock)*/ + + +/*---------------------------------------------------------------------------- + Clock functions + *----------------------------------------------------------------------------*/ +/** + * Update SystemCoreClock variable + * + * @param none + * @return none + * + * @brief Updates the SystemCoreClock with current core Clock + * retrieved from cpu registers. + */ +void SystemCoreClockUpdate (void) +{ + + SystemCoreClock = __SYSTEM_CLOCK; + +} + +/** + * Initialize the system + * + * @param none + * @return none + * + * @brief Setup the microcontroller system. + * Initialize the System. + */ +void SystemInit (void) +{ + #if (__FPU_USED == 1) + SCB->CPACR |= ((3UL << 10*2) | /* set CP10 Full Access */ + (3UL << 11*2) ); /* set CP11 Full Access */ + #endif + +#ifdef UNALIGNED_SUPPORT_DISABLE + SCB->CCR |= SCB_CCR_UNALIGN_TRP_Msk; +#endif + + SystemCoreClock = __SYSTEM_CLOCK; + +}