added prescaler for 16 bit pwm in LPC1347 target
Fork of mbed-dev by
Diff: targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/emlib/src/em_mpu.c
- Revision:
- 144:ef7eb2e8f9f7
- Parent:
- 50:a417edff4437
--- a/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/emlib/src/em_mpu.c Tue Aug 02 14:07:36 2016 +0000 +++ b/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/emlib/src/em_mpu.c Fri Sep 02 15:07:44 2016 +0100 @@ -1,124 +1,124 @@ -/***************************************************************************//** - * @file em_mpu.c - * @brief Memory Protection Unit (MPU) Peripheral API - * @version 4.2.1 - ******************************************************************************* - * @section License - * <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b> - ******************************************************************************* - * - * Permission is granted to anyone to use this software for any purpose, - * including commercial applications, and to alter it and redistribute it - * freely, subject to the following restrictions: - * - * 1. The origin of this software must not be misrepresented; you must not - * claim that you wrote the original software. - * 2. Altered source versions must be plainly marked as such, and must not be - * misrepresented as being the original software. - * 3. This notice may not be removed or altered from any source distribution. - * - * DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Silicon Labs has no - * obligation to support this Software. Silicon Labs is providing the - * Software "AS IS", with no express or implied warranties of any kind, - * including, but not limited to, any implied warranties of merchantability - * or fitness for any particular purpose or warranties against infringement - * of any proprietary rights of a third party. - * - * Silicon Labs will not be liable for any consequential, incidental, or - * special damages, or any other relief, or for any claim by any third party, - * arising from your use of this Software. - * - ******************************************************************************/ - -#include "em_mpu.h" -#if defined(__MPU_PRESENT) && (__MPU_PRESENT == 1) -#include "em_assert.h" - - -/***************************************************************************//** - * @addtogroup EM_Library - * @{ - ******************************************************************************/ - - -/***************************************************************************//** - * @addtogroup MPU - * @brief Memory Protection Unit (MPU) Peripheral API - * @details - * This module contains functions to enable, disable and setup the MPU. - * The MPU is used to control access attributes and permissions in the - * memory map. The settings that can be controlled are: - * - * @li Executable attribute. - * @li Cachable, bufferable and shareable attributes. - * @li Cache policy. - * @li Access permissions: Priviliged or User state, read or write access, - * and combinations of all these. - * - * The MPU can be activated and deactivated with functions: - * @verbatim - * MPU_Enable(..); - * MPU_Disable();@endverbatim - * The MPU can control 8 memory regions with individual access control - * settings. Section attributes and permissions are set with: - * @verbatim - * MPU_ConfigureRegion(..);@endverbatim - * It is advisable to disable the MPU when altering region settings. - * - * - * @{ - ******************************************************************************/ - - -/******************************************************************************* - ************************** GLOBAL FUNCTIONS ******************************* - ******************************************************************************/ - - -/***************************************************************************//** - * @brief - * Configure an MPU region. - * - * @details - * Writes to MPU RBAR and RASR registers. - * Refer to Cortex-M3 Reference Manual, MPU chapter for further details. - * To disable a region it is only required to set init->regionNo to the - * desired value and init->regionEnable = false. - * - * @param[in] init - * Pointer to a structure containing MPU region init information. - ******************************************************************************/ -void MPU_ConfigureRegion(const MPU_RegionInit_TypeDef *init) -{ - EFM_ASSERT(init->regionNo < ((MPU->TYPE & MPU_TYPE_DREGION_Msk) >> - MPU_TYPE_DREGION_Pos)); - - MPU->RNR = init->regionNo; - - if (init->regionEnable) - { - EFM_ASSERT(!(init->baseAddress & ~MPU_RBAR_ADDR_Msk)); - EFM_ASSERT(init->tex <= 0x7); - - MPU->RBAR = init->baseAddress; - MPU->RASR = ((init->disableExec ? 1 : 0) << MPU_RASR_XN_Pos) - | (init->accessPermission << MPU_RASR_AP_Pos) - | (init->tex << MPU_RASR_TEX_Pos) - | ((init->shareable ? 1 : 0) << MPU_RASR_S_Pos) - | ((init->cacheable ? 1 : 0) << MPU_RASR_C_Pos) - | ((init->bufferable ? 1 : 0) << MPU_RASR_B_Pos) - | (init->srd << MPU_RASR_SRD_Pos) - | (init->size << MPU_RASR_SIZE_Pos) - | (1 << MPU_RASR_ENABLE_Pos); - } - else - { - MPU->RBAR = 0; - MPU->RASR = 0; - } -} - - -/** @} (end addtogroup CMU) */ -/** @} (end addtogroup EM_Library) */ -#endif /* defined(__MPU_PRESENT) && (__MPU_PRESENT == 1) */ +/***************************************************************************//** + * @file em_mpu.c + * @brief Memory Protection Unit (MPU) Peripheral API + * @version 4.2.1 + ******************************************************************************* + * @section License + * <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b> + ******************************************************************************* + * + * Permission is granted to anyone to use this software for any purpose, + * including commercial applications, and to alter it and redistribute it + * freely, subject to the following restrictions: + * + * 1. The origin of this software must not be misrepresented; you must not + * claim that you wrote the original software. + * 2. Altered source versions must be plainly marked as such, and must not be + * misrepresented as being the original software. + * 3. This notice may not be removed or altered from any source distribution. + * + * DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Silicon Labs has no + * obligation to support this Software. Silicon Labs is providing the + * Software "AS IS", with no express or implied warranties of any kind, + * including, but not limited to, any implied warranties of merchantability + * or fitness for any particular purpose or warranties against infringement + * of any proprietary rights of a third party. + * + * Silicon Labs will not be liable for any consequential, incidental, or + * special damages, or any other relief, or for any claim by any third party, + * arising from your use of this Software. + * + ******************************************************************************/ + +#include "em_mpu.h" +#if defined(__MPU_PRESENT) && (__MPU_PRESENT == 1) +#include "em_assert.h" + + +/***************************************************************************//** + * @addtogroup EM_Library + * @{ + ******************************************************************************/ + + +/***************************************************************************//** + * @addtogroup MPU + * @brief Memory Protection Unit (MPU) Peripheral API + * @details + * This module contains functions to enable, disable and setup the MPU. + * The MPU is used to control access attributes and permissions in the + * memory map. The settings that can be controlled are: + * + * @li Executable attribute. + * @li Cachable, bufferable and shareable attributes. + * @li Cache policy. + * @li Access permissions: Priviliged or User state, read or write access, + * and combinations of all these. + * + * The MPU can be activated and deactivated with functions: + * @verbatim + * MPU_Enable(..); + * MPU_Disable();@endverbatim + * The MPU can control 8 memory regions with individual access control + * settings. Section attributes and permissions are set with: + * @verbatim + * MPU_ConfigureRegion(..);@endverbatim + * It is advisable to disable the MPU when altering region settings. + * + * + * @{ + ******************************************************************************/ + + +/******************************************************************************* + ************************** GLOBAL FUNCTIONS ******************************* + ******************************************************************************/ + + +/***************************************************************************//** + * @brief + * Configure an MPU region. + * + * @details + * Writes to MPU RBAR and RASR registers. + * Refer to Cortex-M3 Reference Manual, MPU chapter for further details. + * To disable a region it is only required to set init->regionNo to the + * desired value and init->regionEnable = false. + * + * @param[in] init + * Pointer to a structure containing MPU region init information. + ******************************************************************************/ +void MPU_ConfigureRegion(const MPU_RegionInit_TypeDef *init) +{ + EFM_ASSERT(init->regionNo < ((MPU->TYPE & MPU_TYPE_DREGION_Msk) >> + MPU_TYPE_DREGION_Pos)); + + MPU->RNR = init->regionNo; + + if (init->regionEnable) + { + EFM_ASSERT(!(init->baseAddress & ~MPU_RBAR_ADDR_Msk)); + EFM_ASSERT(init->tex <= 0x7); + + MPU->RBAR = init->baseAddress; + MPU->RASR = ((init->disableExec ? 1 : 0) << MPU_RASR_XN_Pos) + | (init->accessPermission << MPU_RASR_AP_Pos) + | (init->tex << MPU_RASR_TEX_Pos) + | ((init->shareable ? 1 : 0) << MPU_RASR_S_Pos) + | ((init->cacheable ? 1 : 0) << MPU_RASR_C_Pos) + | ((init->bufferable ? 1 : 0) << MPU_RASR_B_Pos) + | (init->srd << MPU_RASR_SRD_Pos) + | (init->size << MPU_RASR_SIZE_Pos) + | (1 << MPU_RASR_ENABLE_Pos); + } + else + { + MPU->RBAR = 0; + MPU->RASR = 0; + } +} + + +/** @} (end addtogroup CMU) */ +/** @} (end addtogroup EM_Library) */ +#endif /* defined(__MPU_PRESENT) && (__MPU_PRESENT == 1) */