cpu.h
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/*
* Copyright (C) 2015 Kaspar Schleiser <kaspar@schleiser.de>
* 2014 Freie Universität Berlin, Hinnerk van Bruinehsen
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup cpu_atmega_common
* @brief Common implementations and headers for ATmega family based micro-controllers
* @{
*
* @file
* @brief Basic definitions for the ATmega common module
*
* When ever you want to do something hardware related, that is accessing MCUs registers directly,
* just include this file. It will then make sure that the MCU specific headers are included.
*
* @author Stefan Pfeiffer <stefan.pfeiffer@fu-berlin.de>
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
* @author Hinnerk van Bruinehsen <h.v.bruinehsen@fu-berlin.de>
* @author Kaspar Schleiser <kaspar@schleiser.de>
*/
#ifndef ATMEGA_COMMON_H
#define ATMEGA_COMMON_H
#include <stdio.h>
#include <stdint.h>
#include <avr/interrupt.h>
#include "cpu_conf.h"
/**
* For downwards compatibility with old RIOT code.
* TODO: remove once core was adjusted
*/
#include "irq.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief global in-ISR state variable
*/
extern volatile uint8_t __in_isr;
/**
* @brief Flag entering of an ISR
*/
static inline void __enter_isr(void)
{
__in_isr = 1;
}
/**
* @brief Flag exiting of an ISR
*/
static inline void __exit_isr(void)
{
__in_isr = 0;
}
/**
* @brief Initialization of the CPU
*/
void cpu_init(void);
/**
* @brief Print the last instruction's address
*
* @todo: Not supported
*/
static inline void cpu_print_last_instruction(void)
{
puts("n/a");
}
#ifdef __cplusplus
}
#endif
#endif /* ATMEGA_COMMON_H */
/** @} */