added prescaler for 16 bit pwm in LPC1347 target
Fork of mbed-dev by
targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/emlib/src/em_rmu.c
- Committer:
- <>
- Date:
- 2016-09-02
- Revision:
- 144:ef7eb2e8f9f7
- Parent:
- 50:a417edff4437
File content as of revision 144:ef7eb2e8f9f7:
/***************************************************************************//** * @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) */