mbed-dev - added prescaler for 16 bit pwm in LPC1347 target

Users » JojoS » Code » mbed-dev
added prescaler for 16 bit pwm in LPC1347 target
Diff: targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/emlib/src/em_rmu.c

Revision:: 144:ef7eb2e8f9f7
Parent:: 50:a417edff4437
diff -r 423e1876dc07 -r ef7eb2e8f9f7 targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/emlib/src/em_rmu.c
--- 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) */
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Type:	Library
Created:	10 Sep 2016
Imports:	1
Forks:	0
Commits:	148
Dependents:	0
Dependencies:	0
Followers:	1
Diff: targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/emlib/src/em_rmu.c

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