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_rmu.c
- Revision:
- 144:ef7eb2e8f9f7
- Parent:
- 50:a417edff4437
--- a/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/emlib/src/em_rmu.c Tue Aug 02 14:07:36 2016 +0000 +++ b/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/emlib/src/em_rmu.c Fri Sep 02 15:07:44 2016 +0100 @@ -1,297 +1,297 @@ -/***************************************************************************//** - * @file em_rmu.c - * @brief Reset Management Unit (RMU) peripheral module 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_rmu.h" -#if defined(RMU_COUNT) && (RMU_COUNT > 0) - -#include "em_common.h" -#include "em_emu.h" -#include "em_bus.h" - -/***************************************************************************//** - * @addtogroup EM_Library - * @{ - ******************************************************************************/ - -/***************************************************************************//** - * @addtogroup RMU - * @brief Reset Management Unit (RMU) Peripheral API - * @{ - ******************************************************************************/ - -/******************************************************************************* - ***************************** DEFINES ********************************* - ******************************************************************************/ - -/** @cond DO_NOT_INCLUDE_WITH_DOXYGEN */ - -/* Reset cause "don't care" definitions. - 1's mark the bits that must be zero, zeros are "don't cares". */ -#if (_RMU_RSTCAUSE_MASK == 0x0000007FUL) -#define RMU_RSTCAUSE_PORST_XMASK (0x00000000) /**0b0000000000000000 < Power On Reset */ -#define RMU_RSTCAUSE_BODUNREGRST_XMASK (0x00000081) /**0b0000000010000001 < Brown Out Detector Unregulated Domain Reset */ -#define RMU_RSTCAUSE_BODREGRST_XMASK (0x00000091) /**0b0000000010010001 < Brown Out Detector Regulated Domain Reset */ -#define RMU_RSTCAUSE_EXTRST_XMASK (0x00000001) /**0b0000000000000001 < External Pin Reset */ -#define RMU_RSTCAUSE_WDOGRST_XMASK (0x00000003) /**0b0000000000000011 < Watchdog Reset */ -#define RMU_RSTCAUSE_LOCKUPRST_XMASK (0x0000EFDF) /**0b1110111111011111 < LOCKUP Reset */ -#define RMU_RSTCAUSE_SYSREQRST_XMASK (0x0000EF9F) /**0b1110111110011111 < System Request Reset */ -#define NUM_RSTCAUSES (7) - -#elif (_RMU_RSTCAUSE_MASK == 0x000007FFUL) -#define RMU_RSTCAUSE_PORST_XMASK (0x00000000) /**0b0000000000000000 < Power On Reset */ -#define RMU_RSTCAUSE_BODUNREGRST_XMASK (0x00000081) /**0b0000000010000001 < Brown Out Detector Unregulated Domain Reset */ -#define RMU_RSTCAUSE_BODREGRST_XMASK (0x00000091) /**0b0000000010010001 < Brown Out Detector Regulated Domain Reset */ -#define RMU_RSTCAUSE_EXTRST_XMASK (0x00000001) /**0b0000000000000001 < External Pin Reset */ -#define RMU_RSTCAUSE_WDOGRST_XMASK (0x00000003) /**0b0000000000000011 < Watchdog Reset */ -#define RMU_RSTCAUSE_LOCKUPRST_XMASK (0x0000EFDF) /**0b1110111111011111 < LOCKUP Reset */ -#define RMU_RSTCAUSE_SYSREQRST_XMASK (0x0000EF9F) /**0b1110111110011111 < System Request Reset */ -#define RMU_RSTCAUSE_EM4RST_XMASK (0x00000719) /**0b0000011100011001 < EM4 Reset */ -#define RMU_RSTCAUSE_EM4WURST_XMASK (0x00000619) /**0b0000011000011001 < EM4 Wake-up Reset */ -#define RMU_RSTCAUSE_BODAVDD0_XMASK (0x0000041F) /**0b0000010000011111 < AVDD0 Bod Reset. */ -#define RMU_RSTCAUSE_BODAVDD1_XMASK (0x0000021F) /**0b0000001000011111 < AVDD1 Bod Reset. */ -#define NUM_RSTCAUSES (11) - -#elif (_RMU_RSTCAUSE_MASK == 0x0000FFFFUL) -#define RMU_RSTCAUSE_PORST_XMASK (0x00000000) /**0b0000000000000000 < Power On Reset */ -#define RMU_RSTCAUSE_BODUNREGRST_XMASK (0x00000081) /**0b0000000010000001 < Brown Out Detector Unregulated Domain Reset */ -#define RMU_RSTCAUSE_BODREGRST_XMASK (0x00000091) /**0b0000000010010001 < Brown Out Detector Regulated Domain Reset */ -#define RMU_RSTCAUSE_EXTRST_XMASK (0x00000001) /**0b0000000000000001 < External Pin Reset */ -#define RMU_RSTCAUSE_WDOGRST_XMASK (0x00000003) /**0b0000000000000011 < Watchdog Reset */ -#define RMU_RSTCAUSE_LOCKUPRST_XMASK (0x0000EFDF) /**0b1110111111011111 < LOCKUP Reset */ -#define RMU_RSTCAUSE_SYSREQRST_XMASK (0x0000EF9F) /**0b1110111110011111 < System Request Reset */ -#define RMU_RSTCAUSE_EM4RST_XMASK (0x00000719) /**0b0000011100011001 < EM4 Reset */ -#define RMU_RSTCAUSE_EM4WURST_XMASK (0x00000619) /**0b0000011000011001 < EM4 Wake-up Reset */ -#define RMU_RSTCAUSE_BODAVDD0_XMASK (0x0000041F) /**0b0000010000011111 < AVDD0 Bod Reset */ -#define RMU_RSTCAUSE_BODAVDD1_XMASK (0x0000021F) /**0b0000001000011111 < AVDD1 Bod Reset */ -#define RMU_RSTCAUSE_BUBODVDDDREG_XMASK (0x00000001) /**0b0000000000000001 < Backup Brown Out Detector, VDD_DREG */ -#define RMU_RSTCAUSE_BUBODBUVIN_XMASK (0x00000001) /**0b0000000000000001 < Backup Brown Out Detector, BU_VIN */ -#define RMU_RSTCAUSE_BUBODUNREG_XMASK (0x00000001) /**0b0000000000000001 < Backup Brown Out Detector Unregulated Domain */ -#define RMU_RSTCAUSE_BUBODREG_XMASK (0x00000001) /**0b0000000000000001 < Backup Brown Out Detector Regulated Domain */ -#define RMU_RSTCAUSE_BUMODERST_XMASK (0x00000001) /**0b0000000000000001 < Backup mode reset */ -#define NUM_RSTCAUSES (16) - -#elif ((_RMU_RSTCAUSE_MASK & 0x0FFFFFFF) == 0x00010F1DUL) -#define RMU_RSTCAUSE_PORST_XMASK (0x00000000) /**0b0000000000000000 < Power On Reset */ -#define RMU_RSTCAUSE_BODAVDD_XMASK (0x00000001) /**0b0000000000000001 < AVDD Bod Reset */ -#define RMU_RSTCAUSE_BODDVDD_XMASK (0x00000003) /**0b0000000000000011 < DVDD Bod Reset */ -#define RMU_RSTCAUSE_BODREGRST_XMASK (0x0000000F) /**0b0000000000001111 < Brown Out Detector Regulated Domain Reset */ -#define RMU_RSTCAUSE_EXTRST_XMASK (0x0000000F) /**0b0000000000001111 < External Pin Reset */ -#define RMU_RSTCAUSE_LOCKUPRST_XMASK (0x0000001F) /**0b0000000000011111 < LOCKUP Reset */ -#define RMU_RSTCAUSE_SYSREQRST_XMASK (0x0000001F) /**0b0000000000011111 < System Request Reset */ -#define RMU_RSTCAUSE_WDOGRST_XMASK (0x0000001F) /**0b0000000000011111 < Watchdog Reset */ -#define RMU_RSTCAUSE_EM4RST_XMASK (0x00000003) /**0b0000000000000011 < EM4H/S Reset */ -#define NUM_RSTCAUSES (9) - -#else -#warning "RMU_RSTCAUSE XMASKs are not defined for this family." -#endif - -/******************************************************************************* - ******************************* STRUCTS *********************************** - ******************************************************************************/ - -/** Reset cause mask type. */ -typedef struct -{ - uint32_t resetCauseMask; - uint32_t dontCareMask; -} RMU_ResetCauseMasks_Typedef; - - -/******************************************************************************* - ******************************* TYPEDEFS ********************************** - ******************************************************************************/ - -/** Reset cause mask table. */ -static const RMU_ResetCauseMasks_Typedef resetCauseMasks[NUM_RSTCAUSES] = - { - { RMU_RSTCAUSE_PORST, RMU_RSTCAUSE_PORST_XMASK }, -#if defined(RMU_RSTCAUSE_BODUNREGRST) - { RMU_RSTCAUSE_BODUNREGRST, RMU_RSTCAUSE_BODUNREGRST_XMASK }, -#endif -#if defined(RMU_RSTCAUSE_BODREGRST) - { RMU_RSTCAUSE_BODREGRST, RMU_RSTCAUSE_BODREGRST_XMASK }, -#endif -#if defined(RMU_RSTCAUSE_AVDDBOD) - { RMU_RSTCAUSE_AVDDBOD, RMU_RSTCAUSE_BODAVDD_XMASK }, -#endif -#if defined(RMU_RSTCAUSE_DVDDBOD) - { RMU_RSTCAUSE_DVDDBOD, RMU_RSTCAUSE_BODDVDD_XMASK }, -#endif -#if defined(RMU_RSTCAUSE_DECBOD) - { RMU_RSTCAUSE_DECBOD, RMU_RSTCAUSE_BODREGRST_XMASK }, -#endif - { RMU_RSTCAUSE_EXTRST, RMU_RSTCAUSE_EXTRST_XMASK }, - { RMU_RSTCAUSE_WDOGRST, RMU_RSTCAUSE_WDOGRST_XMASK }, - { RMU_RSTCAUSE_LOCKUPRST, RMU_RSTCAUSE_LOCKUPRST_XMASK }, - { RMU_RSTCAUSE_SYSREQRST, RMU_RSTCAUSE_SYSREQRST_XMASK }, -#if defined(RMU_RSTCAUSE_EM4RST) - { RMU_RSTCAUSE_EM4RST, RMU_RSTCAUSE_EM4RST_XMASK }, -#endif -#if defined(RMU_RSTCAUSE_EM4WURST) - { RMU_RSTCAUSE_EM4WURST, RMU_RSTCAUSE_EM4WURST_XMASK }, -#endif -#if defined(RMU_RSTCAUSE_BODAVDD0) - { RMU_RSTCAUSE_BODAVDD0, RMU_RSTCAUSE_BODAVDD0_XMASK }, -#endif -#if defined(RMU_RSTCAUSE_BODAVDD1) - { RMU_RSTCAUSE_BODAVDD1, RMU_RSTCAUSE_BODAVDD1_XMASK }, -#endif -#if defined(BU_PRESENT) - { RMU_RSTCAUSE_BUBODVDDDREG, RMU_RSTCAUSE_BUBODVDDDREG_XMASK }, - { RMU_RSTCAUSE_BUBODBUVIN, RMU_RSTCAUSE_BUBODBUVIN_XMASK }, - { RMU_RSTCAUSE_BUBODUNREG, RMU_RSTCAUSE_BUBODUNREG_XMASK }, - { RMU_RSTCAUSE_BUBODREG, RMU_RSTCAUSE_BUBODREG_XMASK }, - { RMU_RSTCAUSE_BUMODERST, RMU_RSTCAUSE_BUMODERST_XMASK }, -#endif - }; - - -/******************************************************************************* - ******************************** TEST ******************************** - ******************************************************************************/ -#if defined(EMLIB_REGRESSION_TEST) -/* Test variable that replaces the RSTCAUSE cause register when testing - the RMU_ResetCauseGet function. */ -extern uint32_t rstCause; -#endif - - -/** @endcond */ - -/******************************************************************************* - ************************** GLOBAL FUNCTIONS ******************************* - ******************************************************************************/ - -/***************************************************************************//** - * @brief - * Disable/enable reset for various peripherals and signal sources - * - * @param[in] reset Reset types to enable/disable - * - * @param[in] mode Reset mode - ******************************************************************************/ -void RMU_ResetControl(RMU_Reset_TypeDef reset, RMU_ResetMode_TypeDef mode) -{ - /* Note that the RMU supports bit-band access, but not peripheral bit-field set/clear */ -#if defined(_RMU_CTRL_PINRMODE_MASK) - uint32_t val; -#endif - uint32_t shift; - - shift = EFM32_CTZ((uint32_t)reset); -#if defined(_RMU_CTRL_PINRMODE_MASK) - val = (uint32_t)mode << shift; - RMU->CTRL = (RMU->CTRL & ~reset) | val; -#else - BUS_RegBitWrite(&RMU->CTRL, (uint32_t)shift, mode ? 1 : 0); -#endif -} - - -/***************************************************************************//** - * @brief - * Clear the reset cause register. - * - * @details - * This function clears all the reset cause bits of the RSTCAUSE register. - * The reset cause bits must be cleared by SW before a new reset occurs, - * otherwise reset causes may accumulate. See @ref RMU_ResetCauseGet(). - ******************************************************************************/ -void RMU_ResetCauseClear(void) -{ - RMU->CMD = RMU_CMD_RCCLR; - -#if defined(EMU_AUXCTRL_HRCCLR) - { - uint32_t locked; - - /* Clear some reset causes not cleared with RMU CMD register */ - /* (If EMU registers locked, they must be unlocked first) */ - locked = EMU->LOCK & EMU_LOCK_LOCKKEY_LOCKED; - if (locked) - { - EMU_Unlock(); - } - - BUS_RegBitWrite(&(EMU->AUXCTRL), _EMU_AUXCTRL_HRCCLR_SHIFT, 1); - BUS_RegBitWrite(&(EMU->AUXCTRL), _EMU_AUXCTRL_HRCCLR_SHIFT, 0); - - if (locked) - { - EMU_Lock(); - } - } -#endif -} - - -/***************************************************************************//** - * @brief - * Get the cause of the last reset. - * - * @details - * In order to be useful, the reset cause must be cleared by software before a new - * reset occurs, otherwise reset causes may accumulate. See @ref - * RMU_ResetCauseClear(). This function call will return the main cause for - * reset, which can be a bit mask (several causes), and clear away "noise". - * - * @return - * Reset cause mask. Please consult the reference manual for description - * of the reset cause mask. - ******************************************************************************/ -uint32_t RMU_ResetCauseGet(void) -{ -#if !defined(EMLIB_REGRESSION_TEST) - uint32_t rstCause = RMU->RSTCAUSE; -#endif - uint32_t validRstCause = 0; - uint32_t i; - - for (i = 0; i < NUM_RSTCAUSES; i++) - { - /* Checks to see if rstCause matches a RSTCAUSE and is not excluded by the X-mask */ - if ((rstCause & resetCauseMasks[i].resetCauseMask) - && !(rstCause & resetCauseMasks[i].dontCareMask)) - { - /* Adds the reset-cause to list of real reset-causes */ - validRstCause |= resetCauseMasks[i].resetCauseMask; - } - } - return validRstCause; -} - - -/** @} (end addtogroup RMU) */ -/** @} (end addtogroup EM_Library) */ -#endif /* defined(RMU_COUNT) && (RMU_COUNT > 0) */ +/***************************************************************************//** + * @file em_rmu.c + * @brief Reset Management Unit (RMU) peripheral module 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_rmu.h" +#if defined(RMU_COUNT) && (RMU_COUNT > 0) + +#include "em_common.h" +#include "em_emu.h" +#include "em_bus.h" + +/***************************************************************************//** + * @addtogroup EM_Library + * @{ + ******************************************************************************/ + +/***************************************************************************//** + * @addtogroup RMU + * @brief Reset Management Unit (RMU) Peripheral API + * @{ + ******************************************************************************/ + +/******************************************************************************* + ***************************** DEFINES ********************************* + ******************************************************************************/ + +/** @cond DO_NOT_INCLUDE_WITH_DOXYGEN */ + +/* Reset cause "don't care" definitions. + 1's mark the bits that must be zero, zeros are "don't cares". */ +#if (_RMU_RSTCAUSE_MASK == 0x0000007FUL) +#define RMU_RSTCAUSE_PORST_XMASK (0x00000000) /**0b0000000000000000 < Power On Reset */ +#define RMU_RSTCAUSE_BODUNREGRST_XMASK (0x00000081) /**0b0000000010000001 < Brown Out Detector Unregulated Domain Reset */ +#define RMU_RSTCAUSE_BODREGRST_XMASK (0x00000091) /**0b0000000010010001 < Brown Out Detector Regulated Domain Reset */ +#define RMU_RSTCAUSE_EXTRST_XMASK (0x00000001) /**0b0000000000000001 < External Pin Reset */ +#define RMU_RSTCAUSE_WDOGRST_XMASK (0x00000003) /**0b0000000000000011 < Watchdog Reset */ +#define RMU_RSTCAUSE_LOCKUPRST_XMASK (0x0000EFDF) /**0b1110111111011111 < LOCKUP Reset */ +#define RMU_RSTCAUSE_SYSREQRST_XMASK (0x0000EF9F) /**0b1110111110011111 < System Request Reset */ +#define NUM_RSTCAUSES (7) + +#elif (_RMU_RSTCAUSE_MASK == 0x000007FFUL) +#define RMU_RSTCAUSE_PORST_XMASK (0x00000000) /**0b0000000000000000 < Power On Reset */ +#define RMU_RSTCAUSE_BODUNREGRST_XMASK (0x00000081) /**0b0000000010000001 < Brown Out Detector Unregulated Domain Reset */ +#define RMU_RSTCAUSE_BODREGRST_XMASK (0x00000091) /**0b0000000010010001 < Brown Out Detector Regulated Domain Reset */ +#define RMU_RSTCAUSE_EXTRST_XMASK (0x00000001) /**0b0000000000000001 < External Pin Reset */ +#define RMU_RSTCAUSE_WDOGRST_XMASK (0x00000003) /**0b0000000000000011 < Watchdog Reset */ +#define RMU_RSTCAUSE_LOCKUPRST_XMASK (0x0000EFDF) /**0b1110111111011111 < LOCKUP Reset */ +#define RMU_RSTCAUSE_SYSREQRST_XMASK (0x0000EF9F) /**0b1110111110011111 < System Request Reset */ +#define RMU_RSTCAUSE_EM4RST_XMASK (0x00000719) /**0b0000011100011001 < EM4 Reset */ +#define RMU_RSTCAUSE_EM4WURST_XMASK (0x00000619) /**0b0000011000011001 < EM4 Wake-up Reset */ +#define RMU_RSTCAUSE_BODAVDD0_XMASK (0x0000041F) /**0b0000010000011111 < AVDD0 Bod Reset. */ +#define RMU_RSTCAUSE_BODAVDD1_XMASK (0x0000021F) /**0b0000001000011111 < AVDD1 Bod Reset. */ +#define NUM_RSTCAUSES (11) + +#elif (_RMU_RSTCAUSE_MASK == 0x0000FFFFUL) +#define RMU_RSTCAUSE_PORST_XMASK (0x00000000) /**0b0000000000000000 < Power On Reset */ +#define RMU_RSTCAUSE_BODUNREGRST_XMASK (0x00000081) /**0b0000000010000001 < Brown Out Detector Unregulated Domain Reset */ +#define RMU_RSTCAUSE_BODREGRST_XMASK (0x00000091) /**0b0000000010010001 < Brown Out Detector Regulated Domain Reset */ +#define RMU_RSTCAUSE_EXTRST_XMASK (0x00000001) /**0b0000000000000001 < External Pin Reset */ +#define RMU_RSTCAUSE_WDOGRST_XMASK (0x00000003) /**0b0000000000000011 < Watchdog Reset */ +#define RMU_RSTCAUSE_LOCKUPRST_XMASK (0x0000EFDF) /**0b1110111111011111 < LOCKUP Reset */ +#define RMU_RSTCAUSE_SYSREQRST_XMASK (0x0000EF9F) /**0b1110111110011111 < System Request Reset */ +#define RMU_RSTCAUSE_EM4RST_XMASK (0x00000719) /**0b0000011100011001 < EM4 Reset */ +#define RMU_RSTCAUSE_EM4WURST_XMASK (0x00000619) /**0b0000011000011001 < EM4 Wake-up Reset */ +#define RMU_RSTCAUSE_BODAVDD0_XMASK (0x0000041F) /**0b0000010000011111 < AVDD0 Bod Reset */ +#define RMU_RSTCAUSE_BODAVDD1_XMASK (0x0000021F) /**0b0000001000011111 < AVDD1 Bod Reset */ +#define RMU_RSTCAUSE_BUBODVDDDREG_XMASK (0x00000001) /**0b0000000000000001 < Backup Brown Out Detector, VDD_DREG */ +#define RMU_RSTCAUSE_BUBODBUVIN_XMASK (0x00000001) /**0b0000000000000001 < Backup Brown Out Detector, BU_VIN */ +#define RMU_RSTCAUSE_BUBODUNREG_XMASK (0x00000001) /**0b0000000000000001 < Backup Brown Out Detector Unregulated Domain */ +#define RMU_RSTCAUSE_BUBODREG_XMASK (0x00000001) /**0b0000000000000001 < Backup Brown Out Detector Regulated Domain */ +#define RMU_RSTCAUSE_BUMODERST_XMASK (0x00000001) /**0b0000000000000001 < Backup mode reset */ +#define NUM_RSTCAUSES (16) + +#elif ((_RMU_RSTCAUSE_MASK & 0x0FFFFFFF) == 0x00010F1DUL) +#define RMU_RSTCAUSE_PORST_XMASK (0x00000000) /**0b0000000000000000 < Power On Reset */ +#define RMU_RSTCAUSE_BODAVDD_XMASK (0x00000001) /**0b0000000000000001 < AVDD Bod Reset */ +#define RMU_RSTCAUSE_BODDVDD_XMASK (0x00000003) /**0b0000000000000011 < DVDD Bod Reset */ +#define RMU_RSTCAUSE_BODREGRST_XMASK (0x0000000F) /**0b0000000000001111 < Brown Out Detector Regulated Domain Reset */ +#define RMU_RSTCAUSE_EXTRST_XMASK (0x0000000F) /**0b0000000000001111 < External Pin Reset */ +#define RMU_RSTCAUSE_LOCKUPRST_XMASK (0x0000001F) /**0b0000000000011111 < LOCKUP Reset */ +#define RMU_RSTCAUSE_SYSREQRST_XMASK (0x0000001F) /**0b0000000000011111 < System Request Reset */ +#define RMU_RSTCAUSE_WDOGRST_XMASK (0x0000001F) /**0b0000000000011111 < Watchdog Reset */ +#define RMU_RSTCAUSE_EM4RST_XMASK (0x00000003) /**0b0000000000000011 < EM4H/S Reset */ +#define NUM_RSTCAUSES (9) + +#else +#warning "RMU_RSTCAUSE XMASKs are not defined for this family." +#endif + +/******************************************************************************* + ******************************* STRUCTS *********************************** + ******************************************************************************/ + +/** Reset cause mask type. */ +typedef struct +{ + uint32_t resetCauseMask; + uint32_t dontCareMask; +} RMU_ResetCauseMasks_Typedef; + + +/******************************************************************************* + ******************************* TYPEDEFS ********************************** + ******************************************************************************/ + +/** Reset cause mask table. */ +static const RMU_ResetCauseMasks_Typedef resetCauseMasks[NUM_RSTCAUSES] = + { + { RMU_RSTCAUSE_PORST, RMU_RSTCAUSE_PORST_XMASK }, +#if defined(RMU_RSTCAUSE_BODUNREGRST) + { RMU_RSTCAUSE_BODUNREGRST, RMU_RSTCAUSE_BODUNREGRST_XMASK }, +#endif +#if defined(RMU_RSTCAUSE_BODREGRST) + { RMU_RSTCAUSE_BODREGRST, RMU_RSTCAUSE_BODREGRST_XMASK }, +#endif +#if defined(RMU_RSTCAUSE_AVDDBOD) + { RMU_RSTCAUSE_AVDDBOD, RMU_RSTCAUSE_BODAVDD_XMASK }, +#endif +#if defined(RMU_RSTCAUSE_DVDDBOD) + { RMU_RSTCAUSE_DVDDBOD, RMU_RSTCAUSE_BODDVDD_XMASK }, +#endif +#if defined(RMU_RSTCAUSE_DECBOD) + { RMU_RSTCAUSE_DECBOD, RMU_RSTCAUSE_BODREGRST_XMASK }, +#endif + { RMU_RSTCAUSE_EXTRST, RMU_RSTCAUSE_EXTRST_XMASK }, + { RMU_RSTCAUSE_WDOGRST, RMU_RSTCAUSE_WDOGRST_XMASK }, + { RMU_RSTCAUSE_LOCKUPRST, RMU_RSTCAUSE_LOCKUPRST_XMASK }, + { RMU_RSTCAUSE_SYSREQRST, RMU_RSTCAUSE_SYSREQRST_XMASK }, +#if defined(RMU_RSTCAUSE_EM4RST) + { RMU_RSTCAUSE_EM4RST, RMU_RSTCAUSE_EM4RST_XMASK }, +#endif +#if defined(RMU_RSTCAUSE_EM4WURST) + { RMU_RSTCAUSE_EM4WURST, RMU_RSTCAUSE_EM4WURST_XMASK }, +#endif +#if defined(RMU_RSTCAUSE_BODAVDD0) + { RMU_RSTCAUSE_BODAVDD0, RMU_RSTCAUSE_BODAVDD0_XMASK }, +#endif +#if defined(RMU_RSTCAUSE_BODAVDD1) + { RMU_RSTCAUSE_BODAVDD1, RMU_RSTCAUSE_BODAVDD1_XMASK }, +#endif +#if defined(BU_PRESENT) + { RMU_RSTCAUSE_BUBODVDDDREG, RMU_RSTCAUSE_BUBODVDDDREG_XMASK }, + { RMU_RSTCAUSE_BUBODBUVIN, RMU_RSTCAUSE_BUBODBUVIN_XMASK }, + { RMU_RSTCAUSE_BUBODUNREG, RMU_RSTCAUSE_BUBODUNREG_XMASK }, + { RMU_RSTCAUSE_BUBODREG, RMU_RSTCAUSE_BUBODREG_XMASK }, + { RMU_RSTCAUSE_BUMODERST, RMU_RSTCAUSE_BUMODERST_XMASK }, +#endif + }; + + +/******************************************************************************* + ******************************** TEST ******************************** + ******************************************************************************/ +#if defined(EMLIB_REGRESSION_TEST) +/* Test variable that replaces the RSTCAUSE cause register when testing + the RMU_ResetCauseGet function. */ +extern uint32_t rstCause; +#endif + + +/** @endcond */ + +/******************************************************************************* + ************************** GLOBAL FUNCTIONS ******************************* + ******************************************************************************/ + +/***************************************************************************//** + * @brief + * Disable/enable reset for various peripherals and signal sources + * + * @param[in] reset Reset types to enable/disable + * + * @param[in] mode Reset mode + ******************************************************************************/ +void RMU_ResetControl(RMU_Reset_TypeDef reset, RMU_ResetMode_TypeDef mode) +{ + /* Note that the RMU supports bit-band access, but not peripheral bit-field set/clear */ +#if defined(_RMU_CTRL_PINRMODE_MASK) + uint32_t val; +#endif + uint32_t shift; + + shift = EFM32_CTZ((uint32_t)reset); +#if defined(_RMU_CTRL_PINRMODE_MASK) + val = (uint32_t)mode << shift; + RMU->CTRL = (RMU->CTRL & ~reset) | val; +#else + BUS_RegBitWrite(&RMU->CTRL, (uint32_t)shift, mode ? 1 : 0); +#endif +} + + +/***************************************************************************//** + * @brief + * Clear the reset cause register. + * + * @details + * This function clears all the reset cause bits of the RSTCAUSE register. + * The reset cause bits must be cleared by SW before a new reset occurs, + * otherwise reset causes may accumulate. See @ref RMU_ResetCauseGet(). + ******************************************************************************/ +void RMU_ResetCauseClear(void) +{ + RMU->CMD = RMU_CMD_RCCLR; + +#if defined(EMU_AUXCTRL_HRCCLR) + { + uint32_t locked; + + /* Clear some reset causes not cleared with RMU CMD register */ + /* (If EMU registers locked, they must be unlocked first) */ + locked = EMU->LOCK & EMU_LOCK_LOCKKEY_LOCKED; + if (locked) + { + EMU_Unlock(); + } + + BUS_RegBitWrite(&(EMU->AUXCTRL), _EMU_AUXCTRL_HRCCLR_SHIFT, 1); + BUS_RegBitWrite(&(EMU->AUXCTRL), _EMU_AUXCTRL_HRCCLR_SHIFT, 0); + + if (locked) + { + EMU_Lock(); + } + } +#endif +} + + +/***************************************************************************//** + * @brief + * Get the cause of the last reset. + * + * @details + * In order to be useful, the reset cause must be cleared by software before a new + * reset occurs, otherwise reset causes may accumulate. See @ref + * RMU_ResetCauseClear(). This function call will return the main cause for + * reset, which can be a bit mask (several causes), and clear away "noise". + * + * @return + * Reset cause mask. Please consult the reference manual for description + * of the reset cause mask. + ******************************************************************************/ +uint32_t RMU_ResetCauseGet(void) +{ +#if !defined(EMLIB_REGRESSION_TEST) + uint32_t rstCause = RMU->RSTCAUSE; +#endif + uint32_t validRstCause = 0; + uint32_t i; + + for (i = 0; i < NUM_RSTCAUSES; i++) + { + /* Checks to see if rstCause matches a RSTCAUSE and is not excluded by the X-mask */ + if ((rstCause & resetCauseMasks[i].resetCauseMask) + && !(rstCause & resetCauseMasks[i].dontCareMask)) + { + /* Adds the reset-cause to list of real reset-causes */ + validRstCause |= resetCauseMasks[i].resetCauseMask; + } + } + return validRstCause; +} + + +/** @} (end addtogroup RMU) */ +/** @} (end addtogroup EM_Library) */ +#endif /* defined(RMU_COUNT) && (RMU_COUNT > 0) */