151 lines
3.3 KiB
C
151 lines
3.3 KiB
C
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/* mbed Microcontroller Library - CMSIS
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* Copyright (C) 2009-2011 ARM Limited. All rights reserved.
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*
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* A generic CMSIS include header, pulling in LPC11U24 specifics
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*/
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#ifndef MBED_CMSIS_H
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#define MBED_CMSIS_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "plat_addr_map.h"
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#include _TO_STRING(CONCAT_SUFFIX(CHIP_ID_LITERAL, h))
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#define IRQ_PRIORITY_REALTIME 0
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#define IRQ_PRIORITY_HIGHPLUSPLUS 1
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#define IRQ_PRIORITY_HIGHPLUS 2
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#define IRQ_PRIORITY_HIGH 3
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#define IRQ_PRIORITY_ABOVENORMAL 4
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#define IRQ_PRIORITY_NORMAL 5
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#define IRQ_PRIORITY_BELOWNORMAL 6
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#define IRQ_PRIORITY_LOW 7
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#ifdef __ARM_ARCH_ISA_ARM
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#define IRQ_LOCK_MASK (CPSR_I_Msk | CPSR_F_Msk)
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#else
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#define NVIC_USER_IRQ_OFFSET 16
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#define NVIC_NUM_VECTORS (NVIC_USER_IRQ_OFFSET + USER_IRQn_QTY)
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#endif
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#ifndef __ASSEMBLER__
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#ifdef __ARMCC_VERSION
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// Stupid armclang
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#undef __SSAT
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#define __SSAT(ARG1,ARG2) \
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__extension__ \
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({ \
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int32_t __RES, __ARG1 = (ARG1); \
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__ASM ("ssat %0, %1, %2" : "=r" (__RES) : "I" (ARG2), "r" (__ARG1) ); \
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__RES; \
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})
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#endif
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__STATIC_FORCEINLINE uint32_t int_lock_global(void)
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{
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#ifdef __ARM_ARCH_ISA_ARM
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uint32_t cpsr = __get_CPSR();
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uint32_t st = cpsr & IRQ_LOCK_MASK;
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if (st != IRQ_LOCK_MASK) {
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cpsr |= IRQ_LOCK_MASK;
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__set_CPSR(cpsr);
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}
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return st;
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#else
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uint32_t pri = __get_PRIMASK();
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if ((pri & 0x1) == 0) {
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__disable_irq();
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}
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return pri;
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#endif
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}
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__STATIC_FORCEINLINE void int_unlock_global(uint32_t pri)
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{
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#ifdef __ARM_ARCH_ISA_ARM
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if (pri != IRQ_LOCK_MASK) {
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uint32_t cpsr = __get_CPSR();
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cpsr = (cpsr & ~IRQ_LOCK_MASK) | pri;
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__set_CPSR(cpsr);
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}
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#else
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if ((pri & 0x1) == 0) {
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__enable_irq();
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}
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#endif
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}
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__STATIC_FORCEINLINE uint32_t int_lock(void)
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{
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#ifdef INT_LOCK_EXCEPTION
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#ifdef __ARM_ARCH_ISA_ARM
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uint32_t mask = GIC_GetInterfacePriorityMask();
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// Only allow IRQs with priority IRQ_PRIORITY_HIGHPLUSPLUS and IRQ_PRIORITY_REALTIME
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GIC_SetInterfacePriorityMask(((IRQ_PRIORITY_HIGHPLUS << (8 - __NVIC_PRIO_BITS)) & (uint32_t)0xFFUL));
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return mask;
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#else
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uint32_t pri = __get_BASEPRI();
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// Only allow IRQs with priority IRQ_PRIORITY_HIGHPLUSPLUS and IRQ_PRIORITY_REALTIME
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__set_BASEPRI(((IRQ_PRIORITY_HIGHPLUS << (8 - __NVIC_PRIO_BITS)) & (uint32_t)0xFFUL));
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return pri;
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#endif
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#else
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return int_lock_global();
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#endif
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}
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__STATIC_FORCEINLINE void int_unlock(uint32_t pri)
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{
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#ifdef INT_LOCK_EXCEPTION
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#ifdef __ARM_ARCH_ISA_ARM
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GIC_SetInterfacePriorityMask(pri);
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#else
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__set_BASEPRI(pri);
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#endif
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#else
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int_unlock_global(pri);
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#endif
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}
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__STATIC_FORCEINLINE int in_isr(void)
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{
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#ifdef __ARM_ARCH_ISA_ARM
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uint32_t mode = __get_mode();
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return mode != CPSR_M_USR && mode != CPSR_M_SYS;
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#else
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return __get_IPSR() != 0;
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#endif
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}
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__STATIC_FORCEINLINE int32_t ftoi_nearest(float f)
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{
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return (f >= 0) ? (int32_t)(f + 0.5) : (int32_t)(f - 0.5);
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}
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void GotBaseInit(void);
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int set_bool_flag(bool *flag);
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void clear_bool_flag(bool *flag);
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float db_to_float(float db);
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uint32_t get_msb_pos(uint32_t val);
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uint32_t get_lsb_pos(uint32_t val);
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uint32_t integer_sqrt(uint32_t val);
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uint32_t integer_sqrt_nearest(uint32_t val);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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