When using the code below everything works fine when matching against one remote command, when I add the pulses for the second command to compare with, it starts running very slow, actually not workning. Why is that?
/* Raw IR commander This sketch/program uses the Arduno and a PNA4602 to decode IR received. It then attempts to match it to a previously recorded IR signal Code is public domain, check out www.ladyada.net and adafruit.com for more tutorials! */// We need to use the 'raw' pin reading methods// because timing is very important here and the digitalRead()// procedure is slower!//uint8_t IRpin = 2;// Digital pin #2 is the same as Pin D2 see// http://arduino.cc/en/Hacking/PinMapping168 for the 'raw' pin mapping#define IRpin_PIN PIND#define IRpin 2// the maximum pulse we'll listen for - 65 milliseconds is a long time#define MAXPULSE 65000// what our timing resolution should be, larger is better// as its more 'precise' - but too large and you wont get// accurate timing#define RESOLUTION 20 // What percent we will allow in variation to match the same code#define FUZZINESS 20// we will store up to 100 pulse pairs (this is -a lot-)uint16_t pulses[100][2]; // pair is high and low pulse uint8_t currentpulse = 0; // index for pulses we're storing#include "ircodes.h"void setup(void) { Serial.begin(9600); Serial.println("Ready to decode IR!");}void loop(void) { int numberpulses; numberpulses = listenForIR(); Serial.print("Heard "); Serial.print(numberpulses); Serial.println("-pulse long IR signal"); if (IRcompare(numberpulses, ApplePlaySignal)) { Serial.println("PLAY"); } if (IRcompare(numberpulses, AppleRewindSignal)) { Serial.println("REWIND"); } if (IRcompare(numberpulses, AppleForwardSignal)) { Serial.println("FORWARD"); }}boolean IRcompare(int numpulses, int Signal[]) { for (int i=0; i< numpulses-1; i++) { int oncode = pulses[i][1] * RESOLUTION / 10; int offcode = pulses[i+1][0] * RESOLUTION / 10; /* Serial.print(oncode); // the ON signal we heard Serial.print(" - "); Serial.print(Signal[i*2 + 0]); // the ON signal we want */ // check to make sure the error is less than FUZZINESS percent if ( abs(oncode - Signal[i*2 + 0]) <= (Signal[i*2 + 0] * FUZZINESS / 100)) { //Serial.print(" (ok)"); } else { //Serial.print(" (x)"); // we didn't match perfectly, return a false match return false; } /* Serial.print(" \t"); // tab Serial.print(offcode); // the OFF signal we heard Serial.print(" - "); Serial.print(Signal[i*2 + 1]); // the OFF signal we want */ if ( abs(offcode - Signal[i*2 + 1]) <= (Signal[i*2 + 1] * FUZZINESS / 100)) { //Serial.print(" (ok)"); } else { //Serial.print(" (x)"); // we didn't match perfectly, return a false match return false; } //Serial.println(); } // Everything matched! return true;}int listenForIR(void) { currentpulse = 0; while (1) { uint16_t highpulse, lowpulse; // temporary storage timing highpulse = lowpulse = 0; // start out with no pulse length // while (digitalRead(IRpin)) { // this is too slow! while (IRpin_PIN & (1 << IRpin)) { // pin is still HIGH // count off another few microseconds highpulse++; delayMicroseconds(RESOLUTION); // If the pulse is too long, we 'timed out' - either nothing // was received or the code is finished, so print what // we've grabbed so far, and then reset if ((highpulse >= MAXPULSE) && (currentpulse != 0)) { return currentpulse; } } // we didn't time out so lets stash the reading pulses[currentpulse][0] = highpulse; // same as above while (! (IRpin_PIN & _BV(IRpin))) { // pin is still LOW lowpulse++; delayMicroseconds(RESOLUTION); if ((lowpulse >= MAXPULSE) && (currentpulse != 0)) { return currentpulse; } } pulses[currentpulse][1] = lowpulse; // we read one high-low pulse successfully, continue! currentpulse++; }}void printpulses(void) { Serial.println("\n\r\n\rReceived: \n\rOFF \tON"); for (uint8_t i = 0; i < currentpulse; i++) { Serial.print(pulses[i][0] * RESOLUTION, DEC); Serial.print(" usec, "); Serial.print(pulses[i][1] * RESOLUTION, DEC); Serial.println(" usec"); } // print it in a 'array' format Serial.println("int IRsignal[] = {"); Serial.println("// ON, OFF (in 10's of microseconds)"); for (uint8_t i = 0; i < currentpulse-1; i++) { Serial.print("\t"); // tab Serial.print(pulses[i][1] * RESOLUTION / 10, DEC); Serial.print(", "); Serial.print(pulses[i+1][0] * RESOLUTION / 10, DEC); Serial.println(","); } Serial.print("\t"); // tab Serial.print(pulses[currentpulse-1][1] * RESOLUTION / 10, DEC); Serial.print(", 0};");}
