mbed library sources. Supersedes mbed-src.
Dependents: Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more
Diff: cmsis/TARGET_CORTEX_M/core_cm0plus.h
- Revision:
- 188:bcfe06ba3d64
- Parent:
- 186:707f6e361f3e
- Child:
- 189:f392fc9709a3
--- a/cmsis/TARGET_CORTEX_M/core_cm0plus.h Thu Sep 06 13:40:20 2018 +0100 +++ b/cmsis/TARGET_CORTEX_M/core_cm0plus.h Thu Nov 08 11:46:34 2018 +0000 @@ -1,8 +1,8 @@ /**************************************************************************//** * @file core_cm0plus.h * @brief CMSIS Cortex-M0+ Core Peripheral Access Layer Header File - * @version V5.0.4 - * @date 10. January 2018 + * @version V5.0.6 + * @date 28. May 2018 ******************************************************************************/ /* * Copyright (c) 2009-2018 Arm Limited. All rights reserved. @@ -690,8 +690,8 @@ #endif #include CMSIS_NVIC_VIRTUAL_HEADER_FILE #else -/*#define NVIC_SetPriorityGrouping __NVIC_SetPriorityGrouping not available for Cortex-M0+ */ -/*#define NVIC_GetPriorityGrouping __NVIC_GetPriorityGrouping not available for Cortex-M0+ */ + #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 @@ -717,12 +717,20 @@ #define NVIC_USER_IRQ_OFFSET 16 +/* The following EXC_RETURN values are saved the LR on exception entry */ +#define EXC_RETURN_HANDLER (0xFFFFFFF1UL) /* return to Handler mode, uses MSP after return */ +#define EXC_RETURN_THREAD_MSP (0xFFFFFFF9UL) /* return to Thread mode, uses MSP after return */ +#define EXC_RETURN_THREAD_PSP (0xFFFFFFFDUL) /* return to Thread mode, uses PSP after return */ + + /* 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 @@ -876,6 +884,58 @@ /** + \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, @@ -920,7 +980,7 @@ \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 */