IRremoteInt.h

00001 //******************************************************************************
00002 // IRremote
00003 // Version 2.0.1 June, 2015
00004 // Copyright 2009 Ken Shirriff
00005 // For details, see http://arcfn.com/2009/08/multi-protocol-infrared-remote-library.html
00006 //
00007 // Modified by Paul Stoffregen <paul@pjrc.com> to support other boards and timers
00008 //
00009 // Interrupt code based on NECIRrcv by Joe Knapp
00010 // http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1210243556
00011 // Also influenced by http://zovirl.com/2008/11/12/building-a-universal-remote-with-an-arduino/
00012 //
00013 // JVC and Panasonic protocol added by Kristian Lauszus (Thanks to zenwheel and other people at the original blog post)
00014 // Whynter A/C ARC-110WD added by Francesco Meschia
00015 //******************************************************************************
00016 
00017 #ifndef IRremoteint_h
00018 #define IRremoteint_h
00019 
00020 //------------------------------------------------------------------------------
00021 // Include the right mbed header
00022 //
00023 #include "mbed.h"
00024 
00025 //------------------------------------------------------------------------------
00026 // Information for the Interrupt Service Routine
00027 //
00028 #define RAWBUF  101  // Maximum length of raw duration buffer
00029 
00030 typedef
00031     struct {
00032         // The fields are ordered to reduce memory over caused by struct-padding
00033         uint8_t       rcvstate;        // State Machine state
00034         uint8_t       rawlen;          // counter of entries in rawbuf
00035         unsigned int  timer;           // State timer, counts 50uS ticks.
00036         unsigned int  rawbuf[RAWBUF];  // raw data
00037         uint8_t       overflow;        // Raw buffer overflow occurred
00038     }
00039 irparams_t;
00040 
00041 // ISR State-Machine : Receiver States
00042 #define STATE_IDLE      2
00043 #define STATE_MARK      3
00044 #define STATE_SPACE     4
00045 #define STATE_STOP      5
00046 #define STATE_OVERFLOW  6
00047 
00048 //------------------------------------------------------------------------------
00049 // Pulse parms are ((X*50)-100) for the Mark and ((X*50)+100) for the Space.
00050 // First MARK is the one after the long gap
00051 // Pulse parameters in uSec
00052 //
00053 
00054 // Due to sensor lag, when received, Marks  tend to be 100us too long and
00055 //                                   Spaces tend to be 100us too short
00056 #define MARK_EXCESS    100
00057 
00058 // microseconds per clock interrupt tick
00059 #define USECPERTICK    100
00060 
00061 // Upper and Lower percentage tolerances in measurements
00062 #define TOLERANCE       25
00063 #define LTOL            (1.0 - (TOLERANCE/100.))
00064 #define UTOL            (1.0 + (TOLERANCE/100.))
00065 
00066 // Minimum gap between IR transmissions
00067 #define _GAP            5000
00068 #define GAP_TICKS       (_GAP/USECPERTICK)
00069 
00070 #define TICKS_LOW(us)   ((int)(((us)*LTOL/USECPERTICK)))
00071 #define TICKS_HIGH(us)  ((int)(((us)*UTOL/USECPERTICK + 1)))
00072 
00073 //------------------------------------------------------------------------------
00074 // IR detector output is active low
00075 //
00076 #define MARK   0
00077 #define SPACE  1
00078 
00079 #endif