IRremoteInt.h

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//******************************************************************************
// IRremoteint.h
// IRremote
// Version 2.0.1 June, 2015
// Copyright 2009 Ken Shirriff
// For details, see http://arcfn.com/2009/08/multi-protocol-infrared-remote-library.html
//
// Modified by Paul Stoffregen <paul@pjrc.com> to support other boards and timers
//
// Interrupt code based on NECIRrcv by Joe Knapp
// http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1210243556
// Also influenced by http://zovirl.com/2008/11/12/building-a-universal-remote-with-an-arduino/
//
// JVC and Panasonic protocol added by Kristian Lauszus (Thanks to zenwheel and other people at the original blog post)
// Whynter A/C ARC-110WD added by Francesco Meschia
//******************************************************************************
 
#ifndef IRremoteint_h
#define IRremoteint_h
 
//------------------------------------------------------------------------------
// Include the Arduino header
//
#include <Arduino.h>
 
// All board specific stuff have been moved to its own file, included here.
#include "IRremoteBoardDefs.h"
 
//------------------------------------------------------------------------------
// Information for the Interrupt Service Routine
//
#if ! defined(RAW_BUFFER_LENGTH)
#define RAW_BUFFER_LENGTH  101  
#endif
 
typedef struct {
    // The fields are ordered to reduce memory over caused by struct-padding
    uint8_t rcvstate;        
    uint8_t recvpin;         
    uint8_t blinkpin;
    uint8_t blinkflag;       
    unsigned int rawlen;         
    unsigned int timer;           
    unsigned int rawbuf[RAW_BUFFER_LENGTH];  
    uint8_t overflow;        
} irparams_t;
 
// ISR State-Machine : Receiver States
#define IR_REC_STATE_IDLE      2
#define IR_REC_STATE_MARK      3
#define IR_REC_STATE_SPACE     4
#define IR_REC_STATE_STOP      5
#define IR_REC_STATE_OVERFLOW  6
 
#ifdef IR_GLOBAL
volatile irparams_t  irparams;
#else
extern volatile irparams_t irparams;
#endif
 
//------------------------------------------------------------------------------
// Defines for setting and clearing register bits
//
#ifndef cbi
#define cbi(sfr, bit)  (_SFR_BYTE(sfr) &= ~_BV(bit))
#endif
 
#ifndef sbi
#define sbi(sfr, bit)  (_SFR_BYTE(sfr) |= _BV(bit))
#endif
 
//------------------------------------------------------------------------------
// Pulse parms are ((X*50)-100) for the Mark and ((X*50)+100) for the Space.
// First MARK is the one after the long gap
// Pulse parameters in uSec
//
 
#define MARK_EXCESS    100
 
#define TOLERANCE       25
 
//#define LTOL            (1.0 - (TOLERANCE/100.))
#define LTOL            (100 - TOLERANCE)
 
//#define UTOL            (1.0 + (TOLERANCE/100.))
#define UTOL            (100 + TOLERANCE)
 
#define _GAP            5000
 
#define GAP_TICKS       (_GAP/USECPERTICK)
 
//#define TICKS_LOW(us)   ((int)(((us)*LTOL/USECPERTICK)))
//#define TICKS_HIGH(us)  ((int)(((us)*UTOL/USECPERTICK + 1)))
#if USECPERTICK == 50 && TOLERANCE == 25           // Defaults
    #define TICKS_LOW(us)   ((int) ((us)/67 ))     // (us) / ((USECPERTICK:50 / LTOL:75 ) * 100)
    #define TICKS_HIGH(us)  ((int) ((us)/40 + 1))  // (us) / ((USECPERTICK:50 / UTOL:125) * 100) + 1
#else
    #define TICKS_LOW(us)   ((int) ((long) (us) * LTOL / (USECPERTICK * 100) ))
    #define TICKS_HIGH(us)  ((int) ((long) (us) * UTOL / (USECPERTICK * 100) + 1))
#endif
 
//------------------------------------------------------------------------------
// IR detector output is active low
//
#define MARK   0 
#define SPACE  1 
 
#endif