teensy-cores/teensy/wiring_private.h

/*
  wiring_private.h - Internal header file.
  Part of Arduino - http://www.arduino.cc/

  Copyright (c) 2005-2006 David A. Mellis

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.

  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General
  Public License along with this library; if not, write to the
  Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  Boston, MA  02111-1307  USA

  $Id: wiring.h 239 2007-01-12 17:58:39Z mellis $
*/

#ifndef WiringPrivate_h
#define WiringPrivate_h

#include <avr/io.h>
#include <avr/interrupt.h>
#include <stdio.h>
#include <stdarg.h>

#include "wiring.h"

#if F_CPU == 16000000L
#define ADC_PRESCALER 0x07
#define CPU_PRESCALER 0x00
#elif F_CPU == 8000000L
#define ADC_PRESCALER 0x06
#define CPU_PRESCALER 0x01
#elif F_CPU == 4000000L
#define ADC_PRESCALER 0x05
#define CPU_PRESCALER 0x02
#elif F_CPU == 2000000L
#define ADC_PRESCALER 0x04
#define CPU_PRESCALER 0x03
#elif F_CPU == 1000000L
#define ADC_PRESCALER 0x03
#define CPU_PRESCALER 0x04
#else
#error "Teensyduino only supports 16, 8, 4, 2, 1 MHz.  Please edit boards.txt"
#endif


#ifdef __cplusplus
extern "C"{
#endif

#ifndef cbi
#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))
#endif
#ifndef sbi
#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))
#endif

typedef void (*voidFuncPtr)(void);

#ifdef __cplusplus
} // extern "C"
#endif

#endif