114 lines
3.8 KiB
C
114 lines
3.8 KiB
C
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//******************************************************************************
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// IRremote
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// Version 2.0.1 June, 2015
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// Copyright 2009 Ken Shirriff
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// For details, see http://arcfn.com/2009/08/multi-protocol-infrared-remote-library.html
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//
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// Modified by Paul Stoffregen <paul@pjrc.com> to support other boards and timers
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//
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// Interrupt code based on NECIRrcv by Joe Knapp
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// http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1210243556
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// Also influenced by http://zovirl.com/2008/11/12/building-a-universal-remote-with-an-arduino/
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//
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// JVC and Panasonic protocol added by Kristian Lauszus (Thanks to zenwheel and other people at the original blog post)
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// Whynter A/C ARC-110WD added by Francesco Meschia
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//******************************************************************************
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#ifndef IRremoteint_h
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#define IRremoteint_h
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//------------------------------------------------------------------------------
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// Include the right Arduino header
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//
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#if defined(ARDUINO) && (ARDUINO >= 100)
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# include <Arduino.h>
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#else
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# if !defined(IRPRONTO)
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# include <WProgram.h>
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# endif
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#endif
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//------------------------------------------------------------------------------
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// This handles definition and access to global variables
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//
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#ifdef IR_GLOBAL
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# define EXTERN
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#else
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# define EXTERN extern
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#endif
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//------------------------------------------------------------------------------
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// Information for the Interrupt Service Routine
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//
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#define RAWBUF 101 // Maximum length of raw duration buffer
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typedef
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struct {
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// The fields are ordered to reduce memory over caused by struct-padding
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uint8_t rcvstate; // State Machine state
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uint8_t recvpin; // Pin connected to IR data from detector
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uint8_t blinkpin;
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uint8_t blinkflag; // true -> enable blinking of pin on IR processing
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uint8_t rawlen; // counter of entries in rawbuf
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unsigned int timer; // State timer, counts 50uS ticks.
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unsigned int rawbuf[RAWBUF]; // raw data
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uint8_t overflow; // Raw buffer overflow occurred
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}
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irparams_t;
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// ISR State-Machine : Receiver States
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#define STATE_IDLE 2
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#define STATE_MARK 3
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#define STATE_SPACE 4
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#define STATE_STOP 5
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#define STATE_OVERFLOW 6
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// Allow all parts of the code access to the ISR data
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// NB. The data can be changed by the ISR at any time, even mid-function
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// Therefore we declare it as "volatile" to stop the compiler/CPU caching it
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EXTERN volatile irparams_t irparams;
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//------------------------------------------------------------------------------
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// Defines for setting and clearing register bits
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//
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#ifndef cbi
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# define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))
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#endif
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#ifndef sbi
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# define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))
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#endif
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//------------------------------------------------------------------------------
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// Pulse parms are ((X*50)-100) for the Mark and ((X*50)+100) for the Space.
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// First MARK is the one after the long gap
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// Pulse parameters in uSec
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//
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// Due to sensor lag, when received, Marks tend to be 100us too long and
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// Spaces tend to be 100us too short
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#define MARK_EXCESS 100
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// Upper and Lower percentage tolerances in measurements
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#define TOLERANCE 25
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#define LTOL (1.0 - (TOLERANCE/100.))
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#define UTOL (1.0 + (TOLERANCE/100.))
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// Minimum gap between IR transmissions
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#define _GAP 5000
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#define GAP_TICKS (_GAP/USECPERTICK)
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#define TICKS_LOW(us) ((int)(((us)*LTOL/USECPERTICK)))
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#define TICKS_HIGH(us) ((int)(((us)*UTOL/USECPERTICK + 1)))
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//------------------------------------------------------------------------------
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// IR detector output is active low
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//
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#define MARK 0
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#define SPACE 1
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// All board specific stuff has been moved to its own file, included here.
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#include "boarddefs.h"
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#endif
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