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55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
/*
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* Copyright (C) 2014 Freie Universität Berlin
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*
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* This file is subject to the terms and conditions of the GNU Lesser General
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* Public License v2.1. See the file LICENSE in the top level directory for more
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* details.
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*/
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/**
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* @defgroup cpu_cortexm4_common ARM Cortex-M4 common
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* @ingroup cpu
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* @brief Common implementations and headers for Cortex-M4 family based micro-controllers
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* @{
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*
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* @file
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* @brief Basic definitions for the Cortex-M4 common module
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*
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* When ever you want to do something hardware related, that is accessing MCUs registers directly,
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* just include this file. It will then make sure that the MCU specific headers are included.
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*
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* @author Stefan Pfeiffer <stefan.pfeiffer@fu-berlin.de>
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* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
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*/
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#ifndef __CORTEXM_COMMON_H
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#define __CORTEXM_COMMON_H
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#include "cpu-conf.h"
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/**
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* For downwards compatibility with old RIOT code.
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* TODO: remove once core was adjusted
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*/
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#include "irq.h"
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#define eINT enableIRQ
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#define dINT disableIRQ
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/**
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* @brief Macro has to be called in the beginning of each ISR
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*/
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#define ISR_ENTER() asm("push {LR}")
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/**
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* @brief Macro has to be called on each exit of an ISR
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*/
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#define ISR_EXIT() asm("pop {r0}"); asm("bx r0")
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/**
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* @brief Initialization of the CPU
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*/
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void cpu_init(void);
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#endif /* __CORTEXM_COMMON_H */
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/** @} */
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