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Dependents: Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more
Diff: cmsis/TARGET_CORTEX_M/core_armv8mbl.h
- Revision:
- 188:bcfe06ba3d64
- Parent:
- 186:707f6e361f3e
- Child:
- 189:f392fc9709a3
--- a/cmsis/TARGET_CORTEX_M/core_armv8mbl.h Thu Sep 06 13:40:20 2018 +0100
+++ b/cmsis/TARGET_CORTEX_M/core_armv8mbl.h Thu Nov 08 11:46:34 2018 +0000
@@ -1,8 +1,8 @@
/**************************************************************************//**
* @file core_armv8mbl.h
* @brief CMSIS Armv8-M Baseline Core Peripheral Access Layer Header File
- * @version V5.0.4
- * @date 10. January 2018
+ * @version V5.0.7
+ * @date 22. June 2018
******************************************************************************/
/*
* Copyright (c) 2009-2018 Arm Limited. All rights reserved.
@@ -59,7 +59,7 @@
\ingroup Cortex_ARMv8MBL
@{
*/
-
+
#include "cmsis_version.h"
/* CMSIS definitions */
@@ -415,6 +415,9 @@
#define SCB_ICSR_PENDNMISET_Pos 31U /*!< SCB ICSR: PENDNMISET Position */
#define SCB_ICSR_PENDNMISET_Msk (1UL << SCB_ICSR_PENDNMISET_Pos) /*!< SCB ICSR: PENDNMISET Mask */
+#define SCB_ICSR_NMIPENDSET_Pos SCB_ICSR_PENDNMISET_Pos /*!< SCB ICSR: NMIPENDSET Position, backward compatibility */
+#define SCB_ICSR_NMIPENDSET_Msk SCB_ICSR_PENDNMISET_Msk /*!< SCB ICSR: NMIPENDSET Mask, backward compatibility */
+
#define SCB_ICSR_PENDNMICLR_Pos 30U /*!< SCB ICSR: PENDNMICLR Position */
#define SCB_ICSR_PENDNMICLR_Msk (1UL << SCB_ICSR_PENDNMICLR_Pos) /*!< SCB ICSR: PENDNMICLR Mask */
@@ -721,8 +724,8 @@
*/
typedef struct
{
- __IOM uint32_t SSPSR; /*!< Offset: 0x000 (R/ ) Supported Parallel Port Size Register */
- __IOM uint32_t CSPSR; /*!< Offset: 0x004 (R/W) Current Parallel Port Size Register */
+ __IM uint32_t SSPSR; /*!< Offset: 0x000 (R/ ) Supported Parallel Port Sizes Register */
+ __IOM uint32_t CSPSR; /*!< Offset: 0x004 (R/W) Current Parallel Port Sizes Register */
uint32_t RESERVED0[2U];
__IOM uint32_t ACPR; /*!< Offset: 0x010 (R/W) Asynchronous Clock Prescaler Register */
uint32_t RESERVED1[55U];
@@ -730,26 +733,18 @@
uint32_t RESERVED2[131U];
__IM uint32_t FFSR; /*!< Offset: 0x300 (R/ ) Formatter and Flush Status Register */
__IOM uint32_t FFCR; /*!< Offset: 0x304 (R/W) Formatter and Flush Control Register */
- __IM uint32_t FSCR; /*!< Offset: 0x308 (R/ ) Formatter Synchronization Counter Register */
- uint32_t RESERVED3[759U];
- __IM uint32_t TRIGGER; /*!< Offset: 0xEE8 (R/ ) TRIGGER */
- __IM uint32_t FIFO0; /*!< Offset: 0xEEC (R/ ) Integration ETM Data */
- __IM uint32_t ITATBCTR2; /*!< Offset: 0xEF0 (R/ ) ITATBCTR2 */
- uint32_t RESERVED4[1U];
- __IM uint32_t ITATBCTR0; /*!< Offset: 0xEF8 (R/ ) ITATBCTR0 */
- __IM uint32_t FIFO1; /*!< Offset: 0xEFC (R/ ) Integration ITM Data */
- __IOM uint32_t ITCTRL; /*!< Offset: 0xF00 (R/W) Integration Mode Control */
- uint32_t RESERVED5[39U];
- __IOM uint32_t CLAIMSET; /*!< Offset: 0xFA0 (R/W) Claim tag set */
- __IOM uint32_t CLAIMCLR; /*!< Offset: 0xFA4 (R/W) Claim tag clear */
- uint32_t RESERVED7[8U];
- __IM uint32_t DEVID; /*!< Offset: 0xFC8 (R/ ) TPIU_DEVID */
- __IM uint32_t DEVTYPE; /*!< Offset: 0xFCC (R/ ) TPIU_DEVTYPE */
+ __IOM uint32_t PSCR; /*!< Offset: 0x308 (R/W) Periodic Synchronization Control Register */
+ uint32_t RESERVED3[809U];
+ __OM uint32_t LAR; /*!< Offset: 0xFB0 ( /W) Software Lock Access Register */
+ __IM uint32_t LSR; /*!< Offset: 0xFB4 (R/ ) Software Lock Status Register */
+ uint32_t RESERVED4[4U];
+ __IM uint32_t TYPE; /*!< Offset: 0xFC8 (R/ ) Device Identifier Register */
+ __IM uint32_t DEVTYPE; /*!< Offset: 0xFCC (R/ ) Device Type Register */
} TPI_Type;
/* TPI Asynchronous Clock Prescaler Register Definitions */
-#define TPI_ACPR_PRESCALER_Pos 0U /*!< TPI ACPR: PRESCALER Position */
-#define TPI_ACPR_PRESCALER_Msk (0x1FFFUL /*<< TPI_ACPR_PRESCALER_Pos*/) /*!< TPI ACPR: PRESCALER Mask */
+#define TPI_ACPR_SWOSCALER_Pos 0U /*!< TPI ACPR: SWOSCALER Position */
+#define TPI_ACPR_SWOSCALER_Msk (0xFFFFUL /*<< TPI_ACPR_SWOSCALER_Pos*/) /*!< TPI ACPR: SWOSCALER Mask */
/* TPI Selected Pin Protocol Register Definitions */
#define TPI_SPPR_TXMODE_Pos 0U /*!< TPI SPPR: TXMODE Position */
@@ -772,68 +767,25 @@
#define TPI_FFCR_TrigIn_Pos 8U /*!< TPI FFCR: TrigIn Position */
#define TPI_FFCR_TrigIn_Msk (0x1UL << TPI_FFCR_TrigIn_Pos) /*!< TPI FFCR: TrigIn Mask */
+#define TPI_FFCR_FOnMan_Pos 6U /*!< TPI FFCR: FOnMan Position */
+#define TPI_FFCR_FOnMan_Msk (0x1UL << TPI_FFCR_FOnMan_Pos) /*!< TPI FFCR: FOnMan Mask */
+
#define TPI_FFCR_EnFCont_Pos 1U /*!< TPI FFCR: EnFCont Position */
#define TPI_FFCR_EnFCont_Msk (0x1UL << TPI_FFCR_EnFCont_Pos) /*!< TPI FFCR: EnFCont Mask */
-/* TPI TRIGGER Register Definitions */
-#define TPI_TRIGGER_TRIGGER_Pos 0U /*!< TPI TRIGGER: TRIGGER Position */
-#define TPI_TRIGGER_TRIGGER_Msk (0x1UL /*<< TPI_TRIGGER_TRIGGER_Pos*/) /*!< TPI TRIGGER: TRIGGER Mask */
-
-/* TPI Integration ETM Data Register Definitions (FIFO0) */
-#define TPI_FIFO0_ITM_ATVALID_Pos 29U /*!< TPI FIFO0: ITM_ATVALID Position */
-#define TPI_FIFO0_ITM_ATVALID_Msk (0x3UL << TPI_FIFO0_ITM_ATVALID_Pos) /*!< TPI FIFO0: ITM_ATVALID Mask */
-
-#define TPI_FIFO0_ITM_bytecount_Pos 27U /*!< TPI FIFO0: ITM_bytecount Position */
-#define TPI_FIFO0_ITM_bytecount_Msk (0x3UL << TPI_FIFO0_ITM_bytecount_Pos) /*!< TPI FIFO0: ITM_bytecount Mask */
-
-#define TPI_FIFO0_ETM_ATVALID_Pos 26U /*!< TPI FIFO0: ETM_ATVALID Position */
-#define TPI_FIFO0_ETM_ATVALID_Msk (0x3UL << TPI_FIFO0_ETM_ATVALID_Pos) /*!< TPI FIFO0: ETM_ATVALID Mask */
-
-#define TPI_FIFO0_ETM_bytecount_Pos 24U /*!< TPI FIFO0: ETM_bytecount Position */
-#define TPI_FIFO0_ETM_bytecount_Msk (0x3UL << TPI_FIFO0_ETM_bytecount_Pos) /*!< TPI FIFO0: ETM_bytecount Mask */
-
-#define TPI_FIFO0_ETM2_Pos 16U /*!< TPI FIFO0: ETM2 Position */
-#define TPI_FIFO0_ETM2_Msk (0xFFUL << TPI_FIFO0_ETM2_Pos) /*!< TPI FIFO0: ETM2 Mask */
-
-#define TPI_FIFO0_ETM1_Pos 8U /*!< TPI FIFO0: ETM1 Position */
-#define TPI_FIFO0_ETM1_Msk (0xFFUL << TPI_FIFO0_ETM1_Pos) /*!< TPI FIFO0: ETM1 Mask */
-
-#define TPI_FIFO0_ETM0_Pos 0U /*!< TPI FIFO0: ETM0 Position */
-#define TPI_FIFO0_ETM0_Msk (0xFFUL /*<< TPI_FIFO0_ETM0_Pos*/) /*!< TPI FIFO0: ETM0 Mask */
-
-/* TPI ITATBCTR2 Register Definitions */
-#define TPI_ITATBCTR2_ATREADY_Pos 0U /*!< TPI ITATBCTR2: ATREADY Position */
-#define TPI_ITATBCTR2_ATREADY_Msk (0x1UL /*<< TPI_ITATBCTR2_ATREADY_Pos*/) /*!< TPI ITATBCTR2: ATREADY Mask */
+/* TPI Periodic Synchronization Control Register Definitions */
+#define TPI_PSCR_PSCount_Pos 0U /*!< TPI PSCR: PSCount Position */
+#define TPI_PSCR_PSCount_Msk (0x1FUL /*<< TPI_PSCR_PSCount_Pos*/) /*!< TPI PSCR: TPSCount Mask */
-/* TPI Integration ITM Data Register Definitions (FIFO1) */
-#define TPI_FIFO1_ITM_ATVALID_Pos 29U /*!< TPI FIFO1: ITM_ATVALID Position */
-#define TPI_FIFO1_ITM_ATVALID_Msk (0x3UL << TPI_FIFO1_ITM_ATVALID_Pos) /*!< TPI FIFO1: ITM_ATVALID Mask */
-
-#define TPI_FIFO1_ITM_bytecount_Pos 27U /*!< TPI FIFO1: ITM_bytecount Position */
-#define TPI_FIFO1_ITM_bytecount_Msk (0x3UL << TPI_FIFO1_ITM_bytecount_Pos) /*!< TPI FIFO1: ITM_bytecount Mask */
-
-#define TPI_FIFO1_ETM_ATVALID_Pos 26U /*!< TPI FIFO1: ETM_ATVALID Position */
-#define TPI_FIFO1_ETM_ATVALID_Msk (0x3UL << TPI_FIFO1_ETM_ATVALID_Pos) /*!< TPI FIFO1: ETM_ATVALID Mask */
-
-#define TPI_FIFO1_ETM_bytecount_Pos 24U /*!< TPI FIFO1: ETM_bytecount Position */
-#define TPI_FIFO1_ETM_bytecount_Msk (0x3UL << TPI_FIFO1_ETM_bytecount_Pos) /*!< TPI FIFO1: ETM_bytecount Mask */
+/* TPI Software Lock Status Register Definitions */
+#define TPI_LSR_nTT_Pos 1U /*!< TPI LSR: Not thirty-two bit. Position */
+#define TPI_LSR_nTT_Msk (0x1UL << TPI_LSR_nTT_Pos) /*!< TPI LSR: Not thirty-two bit. Mask */
-#define TPI_FIFO1_ITM2_Pos 16U /*!< TPI FIFO1: ITM2 Position */
-#define TPI_FIFO1_ITM2_Msk (0xFFUL << TPI_FIFO1_ITM2_Pos) /*!< TPI FIFO1: ITM2 Mask */
-
-#define TPI_FIFO1_ITM1_Pos 8U /*!< TPI FIFO1: ITM1 Position */
-#define TPI_FIFO1_ITM1_Msk (0xFFUL << TPI_FIFO1_ITM1_Pos) /*!< TPI FIFO1: ITM1 Mask */
+#define TPI_LSR_SLK_Pos 1U /*!< TPI LSR: Software Lock status Position */
+#define TPI_LSR_SLK_Msk (0x1UL << TPI_LSR_SLK_Pos) /*!< TPI LSR: Software Lock status Mask */
-#define TPI_FIFO1_ITM0_Pos 0U /*!< TPI FIFO1: ITM0 Position */
-#define TPI_FIFO1_ITM0_Msk (0xFFUL /*<< TPI_FIFO1_ITM0_Pos*/) /*!< TPI FIFO1: ITM0 Mask */
-
-/* TPI ITATBCTR0 Register Definitions */
-#define TPI_ITATBCTR0_ATREADY_Pos 0U /*!< TPI ITATBCTR0: ATREADY Position */
-#define TPI_ITATBCTR0_ATREADY_Msk (0x1UL /*<< TPI_ITATBCTR0_ATREADY_Pos*/) /*!< TPI ITATBCTR0: ATREADY Mask */
-
-/* TPI Integration Mode Control Register Definitions */
-#define TPI_ITCTRL_Mode_Pos 0U /*!< TPI ITCTRL: Mode Position */
-#define TPI_ITCTRL_Mode_Msk (0x1UL /*<< TPI_ITCTRL_Mode_Pos*/) /*!< TPI ITCTRL: Mode Mask */
+#define TPI_LSR_SLI_Pos 0U /*!< TPI LSR: Software Lock implemented Position */
+#define TPI_LSR_SLI_Msk (0x1UL /*<< TPI_LSR_SLI_Pos*/) /*!< TPI LSR: Software Lock implemented Mask */
/* TPI DEVID Register Definitions */
#define TPI_DEVID_NRZVALID_Pos 11U /*!< TPI DEVID: NRZVALID Position */
@@ -845,21 +797,15 @@
#define TPI_DEVID_PTINVALID_Pos 9U /*!< TPI DEVID: PTINVALID Position */
#define TPI_DEVID_PTINVALID_Msk (0x1UL << TPI_DEVID_PTINVALID_Pos) /*!< TPI DEVID: PTINVALID Mask */
-#define TPI_DEVID_MinBufSz_Pos 6U /*!< TPI DEVID: MinBufSz Position */
-#define TPI_DEVID_MinBufSz_Msk (0x7UL << TPI_DEVID_MinBufSz_Pos) /*!< TPI DEVID: MinBufSz Mask */
-
-#define TPI_DEVID_AsynClkIn_Pos 5U /*!< TPI DEVID: AsynClkIn Position */
-#define TPI_DEVID_AsynClkIn_Msk (0x1UL << TPI_DEVID_AsynClkIn_Pos) /*!< TPI DEVID: AsynClkIn Mask */
-
-#define TPI_DEVID_NrTraceInput_Pos 0U /*!< TPI DEVID: NrTraceInput Position */
-#define TPI_DEVID_NrTraceInput_Msk (0x1FUL /*<< TPI_DEVID_NrTraceInput_Pos*/) /*!< TPI DEVID: NrTraceInput Mask */
+#define TPI_DEVID_FIFOSZ_Pos 6U /*!< TPI DEVID: FIFO depth Position */
+#define TPI_DEVID_FIFOSZ_Msk (0x7UL << TPI_DEVID_FIFOSZ_Pos) /*!< TPI DEVID: FIFO depth Mask */
/* TPI DEVTYPE Register Definitions */
-#define TPI_DEVTYPE_MajorType_Pos 4U /*!< TPI DEVTYPE: MajorType Position */
-#define TPI_DEVTYPE_MajorType_Msk (0xFUL << TPI_DEVTYPE_MajorType_Pos) /*!< TPI DEVTYPE: MajorType Mask */
+#define TPI_DEVTYPE_SubType_Pos 4U /*!< TPI DEVTYPE: SubType Position */
+#define TPI_DEVTYPE_SubType_Msk (0xFUL /*<< TPI_DEVTYPE_SubType_Pos*/) /*!< TPI DEVTYPE: SubType Mask */
-#define TPI_DEVTYPE_SubType_Pos 0U /*!< TPI DEVTYPE: SubType Position */
-#define TPI_DEVTYPE_SubType_Msk (0xFUL /*<< TPI_DEVTYPE_SubType_Pos*/) /*!< TPI DEVTYPE: SubType Mask */
+#define TPI_DEVTYPE_MajorType_Pos 0U /*!< TPI DEVTYPE: MajorType Position */
+#define TPI_DEVTYPE_MajorType_Msk (0xFUL << TPI_DEVTYPE_MajorType_Pos) /*!< TPI DEVTYPE: MajorType Mask */
/*@}*/ /* end of group CMSIS_TPI */
@@ -1239,8 +1185,8 @@
#endif
#include CMSIS_NVIC_VIRTUAL_HEADER_FILE
#else
-/*#define NVIC_SetPriorityGrouping __NVIC_SetPriorityGrouping not available for Armv8-M Baseline */
-/*#define NVIC_GetPriorityGrouping __NVIC_GetPriorityGrouping not available for Armv8-M Baseline */
+ #define NVIC_SetPriorityGrouping __NVIC_SetPriorityGrouping
+ #define NVIC_GetPriorityGrouping __NVIC_GetPriorityGrouping
#define NVIC_EnableIRQ __NVIC_EnableIRQ
#define NVIC_GetEnableIRQ __NVIC_GetEnableIRQ
#define NVIC_DisableIRQ __NVIC_DisableIRQ
@@ -1266,12 +1212,36 @@
#define NVIC_USER_IRQ_OFFSET 16
+/* Special LR values for Secure/Non-Secure call handling and exception handling */
+
+/* Function Return Payload (from ARMv8-M Architecture Reference Manual) LR value on entry from Secure BLXNS */
+#define FNC_RETURN (0xFEFFFFFFUL) /* bit [0] ignored when processing a branch */
+
+/* The following EXC_RETURN mask values are used to evaluate the LR on exception entry */
+#define EXC_RETURN_PREFIX (0xFF000000UL) /* bits [31:24] set to indicate an EXC_RETURN value */
+#define EXC_RETURN_S (0x00000040UL) /* bit [6] stack used to push registers: 0=Non-secure 1=Secure */
+#define EXC_RETURN_DCRS (0x00000020UL) /* bit [5] stacking rules for called registers: 0=skipped 1=saved */
+#define EXC_RETURN_FTYPE (0x00000010UL) /* bit [4] allocate stack for floating-point context: 0=done 1=skipped */
+#define EXC_RETURN_MODE (0x00000008UL) /* bit [3] processor mode for return: 0=Handler mode 1=Thread mode */
+#define EXC_RETURN_SPSEL (0x00000002UL) /* bit [1] stack pointer used to restore context: 0=MSP 1=PSP */
+#define EXC_RETURN_ES (0x00000001UL) /* bit [0] security state exception was taken to: 0=Non-secure 1=Secure */
+
+/* Integrity Signature (from ARMv8-M Architecture Reference Manual) for exception context stacking */
+#if defined (__FPU_PRESENT) && (__FPU_PRESENT == 1U) /* Value for processors with floating-point extension: */
+#define EXC_INTEGRITY_SIGNATURE (0xFEFA125AUL) /* bit [0] SFTC must match LR bit[4] EXC_RETURN_FTYPE */
+#else
+#define EXC_INTEGRITY_SIGNATURE (0xFEFA125BUL) /* Value for processors without floating-point extension */
+#endif
+
+
/* Interrupt Priorities are WORD accessible only under Armv6-M */
/* The following MACROS handle generation of the register offset and byte masks */
#define _BIT_SHIFT(IRQn) ( ((((uint32_t)(int32_t)(IRQn)) ) & 0x03UL) * 8UL)
#define _SHP_IDX(IRQn) ( (((((uint32_t)(int32_t)(IRQn)) & 0x0FUL)-8UL) >> 2UL) )
#define _IP_IDX(IRQn) ( (((uint32_t)(int32_t)(IRQn)) >> 2UL) )
+#define __NVIC_SetPriorityGrouping(X) (void)(X)
+#define __NVIC_GetPriorityGrouping() (0U)
/**
\brief Enable Interrupt
@@ -1513,6 +1483,58 @@
/**
+ \brief Encode Priority
+ \details Encodes the priority for an interrupt with the given priority group,
+ preemptive priority value, and subpriority value.
+ In case of a conflict between priority grouping and available
+ priority bits (__NVIC_PRIO_BITS), the smallest possible priority group is set.
+ \param [in] PriorityGroup Used priority group.
+ \param [in] PreemptPriority Preemptive priority value (starting from 0).
+ \param [in] SubPriority Subpriority value (starting from 0).
+ \return Encoded priority. Value can be used in the function \ref NVIC_SetPriority().
+ */
+__STATIC_INLINE uint32_t NVIC_EncodePriority (uint32_t PriorityGroup, uint32_t PreemptPriority, uint32_t SubPriority)
+{
+ uint32_t PriorityGroupTmp = (PriorityGroup & (uint32_t)0x07UL); /* only values 0..7 are used */
+ uint32_t PreemptPriorityBits;
+ uint32_t SubPriorityBits;
+
+ PreemptPriorityBits = ((7UL - PriorityGroupTmp) > (uint32_t)(__NVIC_PRIO_BITS)) ? (uint32_t)(__NVIC_PRIO_BITS) : (uint32_t)(7UL - PriorityGroupTmp);
+ SubPriorityBits = ((PriorityGroupTmp + (uint32_t)(__NVIC_PRIO_BITS)) < (uint32_t)7UL) ? (uint32_t)0UL : (uint32_t)((PriorityGroupTmp - 7UL) + (uint32_t)(__NVIC_PRIO_BITS));
+
+ return (
+ ((PreemptPriority & (uint32_t)((1UL << (PreemptPriorityBits)) - 1UL)) << SubPriorityBits) |
+ ((SubPriority & (uint32_t)((1UL << (SubPriorityBits )) - 1UL)))
+ );
+}
+
+
+/**
+ \brief Decode Priority
+ \details Decodes an interrupt priority value with a given priority group to
+ preemptive priority value and subpriority value.
+ In case of a conflict between priority grouping and available
+ priority bits (__NVIC_PRIO_BITS) the smallest possible priority group is set.
+ \param [in] Priority Priority value, which can be retrieved with the function \ref NVIC_GetPriority().
+ \param [in] PriorityGroup Used priority group.
+ \param [out] pPreemptPriority Preemptive priority value (starting from 0).
+ \param [out] pSubPriority Subpriority value (starting from 0).
+ */
+__STATIC_INLINE void NVIC_DecodePriority (uint32_t Priority, uint32_t PriorityGroup, uint32_t* const pPreemptPriority, uint32_t* const pSubPriority)
+{
+ uint32_t PriorityGroupTmp = (PriorityGroup & (uint32_t)0x07UL); /* only values 0..7 are used */
+ uint32_t PreemptPriorityBits;
+ uint32_t SubPriorityBits;
+
+ PreemptPriorityBits = ((7UL - PriorityGroupTmp) > (uint32_t)(__NVIC_PRIO_BITS)) ? (uint32_t)(__NVIC_PRIO_BITS) : (uint32_t)(7UL - PriorityGroupTmp);
+ SubPriorityBits = ((PriorityGroupTmp + (uint32_t)(__NVIC_PRIO_BITS)) < (uint32_t)7UL) ? (uint32_t)0UL : (uint32_t)((PriorityGroupTmp - 7UL) + (uint32_t)(__NVIC_PRIO_BITS));
+
+ *pPreemptPriority = (Priority >> SubPriorityBits) & (uint32_t)((1UL << (PreemptPriorityBits)) - 1UL);
+ *pSubPriority = (Priority ) & (uint32_t)((1UL << (SubPriorityBits )) - 1UL);
+}
+
+
+/**
\brief Set Interrupt Vector
\details Sets an interrupt vector in SRAM based interrupt vector table.
The interrupt number can be positive to specify a device specific interrupt,
@@ -1556,7 +1578,7 @@
\brief System Reset
\details Initiates a system reset request to reset the MCU.
*/
-__STATIC_INLINE void __NVIC_SystemReset(void)
+__NO_RETURN __STATIC_INLINE void __NVIC_SystemReset(void)
{
__DSB(); /* Ensure all outstanding memory accesses included
buffered write are completed before reset */
