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//******************************************************************************
// IRremoteint.h
// IRremote
// Version 2.0.1 June, 2015
// Initially coded 2009 Ken Shirriff http://www.righto.com
//
// 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 ///< Maximum length of raw duration buffer. Must be odd. Supports 16 + 32 bit codings.
#endif
// ISR State-Machine : Receiver States
#define IR_REC_STATE_IDLE 0
#define IR_REC_STATE_MARK 1
#define IR_REC_STATE_SPACE 2
#define IR_REC_STATE_STOP 3
/**
* This struct is used for the ISR (interrupt service routine)
* and is copied once only in state STATE_STOP, so only rcvstate needs to be volatile.
*/
struct irparams_struct {
// The fields are ordered to reduce memory over caused by struct-padding
volatile uint8_t rcvstate; ///< State Machine state
uint8_t recvpin; ///< Pin connected to IR data from detector
uint8_t blinkpin;
uint8_t blinkflag; ///< true -> enable blinking of pin on IR processing
uint16_t rawlen; ///< counter of entries in rawbuf
uint16_t timer; ///< State timer, counts 50uS ticks.
uint16_t rawbuf[RAW_BUFFER_LENGTH]; ///< raw data / tick counts per mark/space, first entry is the length of the gap between previous and current command
uint8_t overflow; ///< Raw buffer overflow occurred
};
extern struct irparams_struct irparams;
//------------------------------------------------------------------------------
// 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
//
/**
* When received, marks tend to be too long and spaces tend to be too short.
* To compensate for this, MARK_EXCESS_MICROS is subtracted from all marks, and added to all spaces.
* If you set MARK_EXCESS to approx. 50us then the TSOP4838 works best.
* At 100us it also worked, but not as well.
* Set MARK_EXCESS to 100us and the VS1838 doesn't work at all.
*/
#define MARK_EXCESS_MICROS 100
/** Relative tolerance (in percent) for some comparisons on measured data. */
#define TOLERANCE 25
/** Lower tolerance for comparison of measured data */
//#define LTOL (1.0 - (TOLERANCE/100.))
#define LTOL (100 - TOLERANCE)
/** Upper tolerance for comparison of measured data */
//#define UTOL (1.0 + (TOLERANCE/100.))
#define UTOL (100 + TOLERANCE)
/** Minimum gap between IR transmissions, in microseconds */
#define _GAP 5000
/** Minimum gap between IR transmissions, in MICROS_PER_TICK */
#define GAP_TICKS (_GAP/MICROS_PER_TICK)
//#define TICKS_LOW(us) ((int)(((us)*LTOL/MICROS_PER_TICK)))
//#define TICKS_HIGH(us) ((int)(((us)*UTOL/MICROS_PER_TICK + 1)))
#if MICROS_PER_TICK == 50 && TOLERANCE == 25 // Defaults
#define TICKS_LOW(us) ((us)/67 ) // (us) / ((MICROS_PER_TICK:50 / LTOL:75 ) * 100)
#define TICKS_HIGH(us) ((us)/40 + 1) // (us) / ((MICROS_PER_TICK:50 / UTOL:125) * 100) + 1
#else
#define TICKS_LOW(us) ((uint16_t) ((long) (us) * LTOL / (MICROS_PER_TICK * 100) ))
#define TICKS_HIGH(us) ((uint16_t) ((long) (us) * UTOL / (MICROS_PER_TICK * 100) + 1))
#endif
//------------------------------------------------------------------------------
// IR detector output is active low
//
#define MARK 0 ///< Sensor output for a mark ("flash")
#define SPACE 1 ///< Sensor output for a space ("gap")
#endif