لعبة الذاكرة والحساب

void translateIR() // takes action based on IR code received
{
       switch(results.value)      
      {
      case BTN_RET:btn_ret();break;       // Clear the input number when pressing RET key
      case BTN_EQ: read_pre_buf();break;  //withdraw
      case BTN_0: if(input_digital_cnt<7)  
                  {
                    save_pre_buf();  //because we need to achieve the function of "BTN_EQ",so we must save the value we pressed always.
                    strcat(buf,"0");
                    //” The string splicing function in string.h will add "0" to form a new string, which can be referred to as the example above.
                    // Example: Enter "2" after 1 and then "5"
                    //                "2",    "21",       "125"
                  }break;              
      case BTN_1: if(input_digital_cnt<7)
                  {
                    save_pre_buf();
                    strcat(buf,"1");
                   } break;
      case BTN_2: if(input_digital_cnt<7)
                  {
                    save_pre_buf();
                    strcat(buf,"2");
                    }break;
      case BTN_3: if(input_digital_cnt<7)
                  {
                    save_pre_buf();
                    strcat(buf,"3");
                    } break;
      case BTN_4: if(input_digital_cnt<7)
                  {
                    save_pre_buf();
                    strcat(buf,"4");
                    }break;
      case BTN_5: if(input_digital_cnt<7)
                  {
                    save_pre_buf();
                    strcat(buf,"5");
                    }break;
      case BTN_6: if(input_digital_cnt<7)
                  {
                    save_pre_buf();
                    strcat(buf,"6");
                    }break;
      case BTN_7: if(input_digital_cnt<7)
                  {
                    save_pre_buf();
                    strcat(buf,"7");
                    }break;
      case BTN_8: if(input_digital_cnt<7)
                  {
                    save_pre_buf();
                    strcat(buf,"8");
                    }break;
      case BTN_9: if(input_digital_cnt<7)
                  {
                    save_pre_buf();
                    strcat(buf,"9");
                    }break; 
       
      case BTN_VOL:judge_TorF();break;   // Confirmation key, press to implement the corresponding algorithm
    }

  delay(200); 
}

void btn_ret() //RET key answer data clear
{
  clr_answer();
  strcpy(buf,empty);
  input_digital_cnt=0;
 }


void read_pre_buf() //Read the last key value
{
  input_digital_cnt--;
  if(btn_cnt>0)
  {
  btn_cnt--;
  clr_answer();
  strcpy(buf,pre_buf[btn_cnt]);
  }
  else if(0==btn_cnt)
  {
     clr_answer();strcpy(buf,empty);
   }
}

void save_pre_buf()//Save the last key we have input.
{
  input_digital_cnt++;
  if(save_buf_flag)
  {
  strcpy(pre_buf[btn_cnt],buf);
  btn_cnt++;
  }
  save_buf_flag=1;
}

void reminder_set()
{
  lcd.setCursor(0,0);
   lcd.print("Begin counting!!");
  }

  
void clr_answer()
{
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Begin counting!!");
  lcd.setCursor(0,1);
  }


void end_display()
{
  if(QUESTION_TOTAL_NUM==qut_cnt)
  {
      menu_flag=1;
      mulrun_flag=0;
      addrun_flag=0;
      remrun_flag=0;
      var_flag=1;
      qut_cnt=0;  
      lcd.clear();
      lcd.setCursor(0,0);
      lcd.print("test ending");
      lcd.setCursor(0,1);
      lcd.print("   score:");
      lcd.print(T_cnt);
      //end_light_effect();
      end_voice_effect();
      T_cnt=0;
      delay(1000);
      lcd.clear();
    
    }
  }

/*
 * IRremote
 * Version 0.11 August, 2009
 * 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
 * Modified  by Mitra Ardron <mitra@mitra.biz> 
 * Added Sanyo and Mitsubishi controllers
 * Modified Sony to spot the repeat codes that some Sony's send
 *
 * 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)
 * LG added by Darryl Smith (based on the JVC protocol)
 */

#include "IRremote.h"
#include "IRremoteInt.h"

// Provides ISR
#include <avr/interrupt.h>

volatile irparams_t irparams;

// These versions of MATCH, MATCH_MARK, and MATCH_SPACE are only for debugging.
// To use them, set DEBUG in IRremoteInt.h
// Normally macros are used for efficiency
#ifdef DEBUG
int MATCH(int measured, int desired) {
  Serial.print("Testing: ");
  Serial.print(TICKS_LOW(desired), DEC);
  Serial.print(" <= ");
  Serial.print(measured, DEC);
  Serial.print(" <= ");
  Serial.println(TICKS_HIGH(desired), DEC);
  return measured >= TICKS_LOW(desired) && measured <= TICKS_HIGH(desired);
}

int MATCH_MARK(int measured_ticks, int desired_us) {
  Serial.print("Testing mark ");
  Serial.print(measured_ticks * USECPERTICK, DEC);
  Serial.print(" vs ");
  Serial.print(desired_us, DEC);
  Serial.print(": ");
  Serial.print(TICKS_LOW(desired_us + MARK_EXCESS), DEC);
  Serial.print(" <= ");
  Serial.print(measured_ticks, DEC);
  Serial.print(" <= ");
  Serial.println(TICKS_HIGH(desired_us + MARK_EXCESS), DEC);
  return measured_ticks >= TICKS_LOW(desired_us + MARK_EXCESS) && measured_ticks <= TICKS_HIGH(desired_us + MARK_EXCESS);
}

int MATCH_SPACE(int measured_ticks, int desired_us) {
  Serial.print("Testing space ");
  Serial.print(measured_ticks * USECPERTICK, DEC);
  Serial.print(" vs ");
  Serial.print(desired_us, DEC);
  Serial.print(": ");
  Serial.print(TICKS_LOW(desired_us - MARK_EXCESS), DEC);
  Serial.print(" <= ");
  Serial.print(measured_ticks, DEC);
  Serial.print(" <= ");
  Serial.println(TICKS_HIGH(desired_us - MARK_EXCESS), DEC);
  return measured_ticks >= TICKS_LOW(desired_us - MARK_EXCESS) && measured_ticks <= TICKS_HIGH(desired_us - MARK_EXCESS);
}
#else
int MATCH(int measured, int desired) {return measured >= TICKS_LOW(desired) && measured <= TICKS_HIGH(desired);}
int MATCH_MARK(int measured_ticks, int desired_us) {return MATCH(measured_ticks, desired_us );}
int MATCH_SPACE(int measured_ticks, int desired_us) {return MATCH(measured_ticks, desired_us);}
// Debugging versions are in IRremote.cpp
#endif

void IRsend::sendNEC(unsigned long data, int nbits)
{
  enableIROut(38);
  mark(NEC_HDR_MARK);
  space(NEC_HDR_SPACE);
  for (int i = 0; i < nbits; i++) {
    if (data & TOPBIT) {
      mark(NEC_BIT_MARK);
      space(NEC_ONE_SPACE);
    } 
    else {
      mark(NEC_BIT_MARK);
      space(NEC_ZERO_SPACE);
    }
    data <<= 1;
  }
  mark(NEC_BIT_MARK);
  space(0);
}

void IRsend::sendSony(unsigned long data, int nbits) {
  enableIROut(40);
  mark(SONY_HDR_MARK);
  space(SONY_HDR_SPACE);
  data = data << (32 - nbits);
  for (int i = 0; i < nbits; i++) {
    if (data & TOPBIT) {
      mark(SONY_ONE_MARK);
      space(SONY_HDR_SPACE);
    } 
    else {
      mark(SONY_ZERO_MARK);
      space(SONY_HDR_SPACE);
    }
    data <<= 1;
  }
}

void IRsend::sendRaw(unsigned int buf[], int len, int hz)
{
  enableIROut(hz);
  for (int i = 0; i < len; i++) {
    if (i & 1) {
      space(buf[i]);
    } 
    else {
      mark(buf[i]);
    }
  }
  space(0); // Just to be sure
}

// Note: first bit must be a one (start bit)
void IRsend::sendRC5(unsigned long data, int nbits)
{
  enableIROut(36);
  data = data << (32 - nbits);
  mark(RC5_T1); // First start bit
  space(RC5_T1); // Second start bit
  mark(RC5_T1); // Second start bit
  for (int i = 0; i < nbits; i++) {
    if (data & TOPBIT) {
      space(RC5_T1); // 1 is space, then mark
      mark(RC5_T1);
    } 
    else {
      mark(RC5_T1);
      space(RC5_T1);
    }
    data <<= 1;
  }
  space(0); // Turn off at end
}

// Caller needs to take care of flipping the toggle bit
void IRsend::sendRC6(unsigned long data, int nbits)
{
  enableIROut(36);
  data = data << (32 - nbits);
  mark(RC6_HDR_MARK);
  space(RC6_HDR_SPACE);
  mark(RC6_T1); // start bit
  space(RC6_T1);
  int t;
  for (int i = 0; i < nbits; i++) {
    if (i == 3) {
      // double-wide trailer bit
      t = 2 * RC6_T1;
    } 
    else {
      t = RC6_T1;
    }
    if (data & TOPBIT) {
      mark(t);
      space(t);
    } 
    else {
      space(t);
      mark(t);
    }

    data <<= 1;
  }
  space(0); // Turn off at end
}
void IRsend::sendPanasonic(unsigned int address, unsigned long data) {
    enableIROut(35);
    mark(PANASONIC_HDR_MARK);
    space(PANASONIC_HDR_SPACE);
    
    for(int i=0;i<16;i++)
    {
        mark(PANASONIC_BIT_MARK);
        if (address & 0x8000) {
            space(PANASONIC_ONE_SPACE);
        } else {
            space(PANASONIC_ZERO_SPACE);
        }
        address <<= 1;        
    }    
    for (int i=0; i < 32; i++) {
        mark(PANASONIC_BIT_MARK);
        if (data & TOPBIT) {
            space(PANASONIC_ONE_SPACE);
        } else {
            space(PANASONIC_ZERO_SPACE);
        }
        data <<= 1;
    }
    mark(PANASONIC_BIT_MARK);
    space(0);
}
void IRsend::sendJVC(unsigned long data, int nbits, int repeat)
{
    enableIROut(38);
    data = data << (32 - nbits);
    if (!repeat){
        mark(JVC_HDR_MARK);
        space(JVC_HDR_SPACE); 
    }
    for (int i = 0; i < nbits; i++) {
        if (data & TOPBIT) {
            mark(JVC_BIT_MARK);
            space(JVC_ONE_SPACE); 
        } 
        else {
            mark(JVC_BIT_MARK);
            space(JVC_ZERO_SPACE); 
        }
        data <<= 1;
    }
    mark(JVC_BIT_MARK);
    space(0);
}

void IRsend::sendSAMSUNG(unsigned long data, int nbits)
{
  enableIROut(38);
  mark(SAMSUNG_HDR_MARK);
  space(SAMSUNG_HDR_SPACE);
  for (int i = 0; i < nbits; i++) {
    if (data & TOPBIT) {
      mark(SAMSUNG_BIT_MARK);
      space(SAMSUNG_ONE_SPACE);
    } 
    else {
      mark(SAMSUNG_BIT_MARK);
      space(SAMSUNG_ZERO_SPACE);
    }
    data <<= 1;
  }
  mark(SAMSUNG_BIT_MARK);
  space(0);
}

void IRsend::mark(int time) {
  // Sends an IR mark for the specified number of microseconds.
  // The mark output is modulated at the PWM frequency.
  TIMER_ENABLE_PWM; // Enable pin 3 PWM output
  if (time > 0) delayMicroseconds(time);
}

/* Leave pin off for time (given in microseconds) */
void IRsend::space(int time) {
  // Sends an IR space for the specified number of microseconds.
  // A space is no output, so the PWM output is disabled.
  TIMER_DISABLE_PWM; // Disable pin 3 PWM output
  if (time > 0) delayMicroseconds(time);
}

void IRsend::enableIROut(int khz) {
  // Enables IR output.  The khz value controls the modulation frequency in kilohertz.
  // The IR output will be on pin 3 (OC2B).
  // This routine is designed for 36-40KHz; if you use it for other values, it's up to you
  // to make sure it gives reasonable results.  (Watch out for overflow / underflow / rounding.)
  // TIMER2 is used in phase-correct PWM mode, with OCR2A controlling the frequency and OCR2B
  // controlling the duty cycle.
  // There is no prescaling, so the output frequency is 16MHz / (2 * OCR2A)
  // To turn the output on and off, we leave the PWM running, but connect and disconnect the output pin.
  // A few hours staring at the ATmega documentation and this will all make sense.
  // See my Secrets of Arduino PWM at http://arcfn.com/2009/07/secrets-of-arduino-pwm.html for details.

  
  // Disable the Timer2 Interrupt (which is used for receiving IR)
  TIMER_DISABLE_INTR; //Timer2 Overflow Interrupt
  
  pinMode(TIMER_PWM_PIN, OUTPUT);
  digitalWrite(TIMER_PWM_PIN, LOW); // When not sending PWM, we want it low
  
  // COM2A = 00: disconnect OC2A
  // COM2B = 00: disconnect OC2B; to send signal set to 10: OC2B non-inverted
  // WGM2 = 101: phase-correct PWM with OCRA as top
  // CS2 = 000: no prescaling
  // The top value for the timer.  The modulation frequency will be SYSCLOCK / 2 / OCR2A.
  TIMER_CONFIG_KHZ(khz);
}

IRrecv::IRrecv(int recvpin)
{
  irparams.recvpin = recvpin;
  irparams.blinkflag = 0;
}

// initialization
void IRrecv::enableIRIn() {
  cli();
  // setup pulse clock timer interrupt
  //Prescale /8 (16M/8 = 0.5 microseconds per tick)
  // Therefore, the timer interval can range from 0.5 to 128 microseconds
  // depending on the reset value (255 to 0)
  TIMER_CONFIG_NORMAL();

  //Timer2 Overflow Interrupt Enable
  TIMER_ENABLE_INTR;

  TIMER_RESET;

  sei();  // enable interrupts

  // initialize state machine variables
  irparams.rcvstate = STATE_IDLE;
  irparams.rawlen = 0;

  // set pin modes
  pinMode(irparams.recvpin, INPUT);
}

// enable/disable blinking of pin 13 on IR processing
void IRrecv::blink13(int blinkflag)
{
  irparams.blinkflag = blinkflag;
  if (blinkflag)
    pinMode(BLINKLED, OUTPUT);
}

// TIMER2 interrupt code to collect raw data.
// Widths of alternating SPACE, MARK are recorded in rawbuf.
// Recorded in ticks of 50 microseconds.
// rawlen counts the number of entries recorded so far.
// First entry is the SPACE between transmissions.
// As soon as a SPACE gets long, ready is set, state switches to IDLE, timing of SPACE continues.
// As soon as first MARK arrives, gap width is recorded, ready is cleared, and new logging starts
ISR(TIMER_INTR_NAME)
{
  TIMER_RESET;

  uint8_t irdata = (uint8_t)digitalRead(irparams.recvpin);

  irparams.timer++; // One more 50us tick
  if (irparams.rawlen >= RAWBUF) {
    // Buffer overflow
    irparams.rcvstate = STATE_STOP;
  }
  switch(irparams.rcvstate) {
  case STATE_IDLE: // In the middle of a gap
    if (irdata == MARK) {
      if (irparams.timer < GAP_TICKS) {
        // Not big enough to be a gap.
        irparams.timer = 0;
      } 
      else {
        // gap just ended, record duration and start recording transmission
        irparams.rawlen = 0;
        irparams.rawbuf[irparams.rawlen++] = irparams.timer;
        irparams.timer = 0;
        irparams.rcvstate = STATE_MARK;
      }
    }
    break;
  case STATE_MARK: // timing MARK
    if (irdata == SPACE) {   // MARK ended, record time
      irparams.rawbuf[irparams.rawlen++] = irparams.timer;
      irparams.timer = 0;
      irparams.rcvstate = STATE_SPACE;
    }
    break;
  case STATE_SPACE: // timing SPACE
    if (irdata == MARK) { // SPACE just ended, record it
      irparams.rawbuf[irparams.rawlen++] = irparams.timer;
      irparams.timer = 0;
      irparams.rcvstate = STATE_MARK;
    } 
    else { // SPACE
      if (irparams.timer > GAP_TICKS) {
        // big SPACE, indicates gap between codes
        // Mark current code as ready for processing
        // Switch to STOP
        // Don't reset timer; keep counting space width
        irparams.rcvstate = STATE_STOP;
      } 
    }
    break;
  case STATE_STOP: // waiting, measuring gap
    if (irdata == MARK) { // reset gap timer
      irparams.timer = 0;
    }
    break;
  }

  if (irparams.blinkflag) {
    if (irdata == MARK) {
      BLINKLED_ON();  // turn pin 13 LED on
    } 
    else {
      BLINKLED_OFF();  // turn pin 13 LED off
    }
  }
}

void IRrecv::resume() {
  irparams.rcvstate = STATE_IDLE;
  irparams.rawlen = 0;
}



// Decodes the received IR message
// Returns 0 if no data ready, 1 if data ready.
// Results of decoding are stored in results
int IRrecv::decode(decode_results *results) {
  results->rawbuf = irparams.rawbuf;
  results->rawlen = irparams.rawlen;
  if (irparams.rcvstate != STATE_STOP) {
    return ERR;
  }
#ifdef DEBUG
  Serial.println("Attempting NEC decode");
#endif
  if (decodeNEC(results)) {
    return DECODED;
  }
#ifdef DEBUG
  Serial.println("Attempting Sony decode");
#endif
  if (decodeSony(results)) {
    return DECODED;
  }
#ifdef DEBUG
  Serial.println("Attempting Sanyo decode");
#endif
  if (decodeSanyo(results)) {
    return DECODED;
  }
#ifdef DEBUG
  Serial.println("Attempting Mitsubishi decode");
#endif
  if (decodeMitsubishi(results)) {
    return DECODED;
  }
#ifdef DEBUG
  Serial.println("Attempting RC5 decode");
#endif  
  if (decodeRC5(results)) {
    return DECODED;
  }
#ifdef DEBUG
  Serial.println("Attempting RC6 decode");
#endif 
  if (decodeRC6(results)) {
    return DECODED;
  }
#ifdef DEBUG
    Serial.println("Attempting Panasonic decode");
#endif 
    if (decodePanasonic(results)) {
        return DECODED;
    }
#ifdef DEBUG
    Serial.println("Attempting LG decode");
#endif 
    if (decodeLG(results)) {
        return DECODED;
    }
#ifdef DEBUG
    Serial.println("Attempting JVC decode");
#endif 
    if (decodeJVC(results)) {
        return DECODED;
    }
#ifdef DEBUG
  Serial.println("Attempting SAMSUNG decode");
#endif
  if (decodeSAMSUNG(results)) {
    return DECODED;
  }
  // decodeHash returns a hash on any input.
  // Thus, it needs to be last in the list.
  // If you add any decodes, add them before this.
  if (decodeHash(results)) {
    return DECODED;
  }
  // Throw away and start over
  resume();
  return ERR;
}

// NECs have a repeat only 4 items long
long IRrecv::decodeNEC(decode_results *results) {
  long data = 0;
  int offset = 1; // Skip first space
  // Initial mark
  if (!MATCH_MARK(results->rawbuf[offset], NEC_HDR_MARK)) {
    return ERR;
  }
  offset++;
  // Check for repeat
  if (irparams.rawlen == 4 &&
    MATCH_SPACE(results->rawbuf[offset], NEC_RPT_SPACE) &&
    MATCH_MARK(results->rawbuf[offset+1], NEC_BIT_MARK)) {
    results->bits = 0;
    results->value = REPEAT;
    results->decode_type = NEC;
    return DECODED;
  }
  if (irparams.rawlen < 2 * NEC_BITS + 4) {
    return ERR;
  }
  // Initial space  
  if (!MATCH_SPACE(results->rawbuf[offset], NEC_HDR_SPACE)) {
    return ERR;
  }
  offset++;
  for (int i = 0; i < NEC_BITS; i++) {
    if (!MATCH_MARK(results->rawbuf[offset], NEC_BIT_MARK)) {
      return ERR;
    }
    offset++;
    if (MATCH_SPACE(results->rawbuf[offset], NEC_ONE_SPACE)) {
      data = (data << 1) | 1;
    } 
    else if (MATCH_SPACE(results->rawbuf[offset], NEC_ZERO_SPACE)) {
      data <<= 1;
    } 
    else {
      return ERR;
    }
    offset++;
  }
  // Success
  results->bits = NEC_BITS;
  results->value = data;
  results->decode_type = NEC;
  return DECODED;
}

long IRrecv::decodeSony(decode_results *results) {
  long data = 0;
  if (irparams.rawlen < 2 * SONY_BITS + 2) {
    return ERR;
  }
  int offset = 0; // Dont skip first space, check its size

  // Some Sony's deliver repeats fast after first
  // unfortunately can't spot difference from of repeat from two fast clicks
  if (results->rawbuf[offset] < SONY_DOUBLE_SPACE_USECS) {
    // Serial.print("IR Gap found: ");
    results->bits = 0;
    results->value = REPEAT;
    results->decode_type = SANYO;
    return DECODED;
  }
  offset++;

  // Initial mark
  if (!MATCH_MARK(results->rawbuf[offset], SONY_HDR_MARK)) {
    return ERR;
  }
  offset++;

  while (offset + 1 < irparams.rawlen) {
    if (!MATCH_SPACE(results->rawbuf[offset], SONY_HDR_SPACE)) {
      break;
    }
    offset++;
    if (MATCH_MARK(results->rawbuf[offset], SONY_ONE_MARK)) {
      data = (data << 1) | 1;
    } 
    else if (MATCH_MARK(results->rawbuf[offset], SONY_ZERO_MARK)) {
      data <<= 1;
    } 
    else {
      return ERR;
    }
    offset++;
  }

  // Success
  results->bits = (offset - 1) / 2;
  if (results->bits < 12) {
    results->bits = 0;
    return ERR;
  }
  results->value = data;
  results->decode_type = SONY;
  return DECODED;
}

// I think this is a Sanyo decoder - serial = SA 8650B
// Looks like Sony except for timings, 48 chars of data and time/space different
long IRrecv::decodeSanyo(decode_results *results) {
  long data = 0;
  if (irparams.rawlen < 2 * SANYO_BITS + 2) {
    return ERR;
  }
  int offset = 0; // Skip first space
  // Initial space  
  /* Put this back in for debugging - note can't use #DEBUG as if Debug on we don't see the repeat cos of the delay
  Serial.print("IR Gap: ");
  Serial.println( results->rawbuf[offset]);
  Serial.println( "test against:");
  Serial.println(results->rawbuf[offset]);
  */
  if (results->rawbuf[offset] < SANYO_DOUBLE_SPACE_USECS) {
    // Serial.print("IR Gap found: ");
    results->bits = 0;
    results->value = REPEAT;
    results->decode_type = SANYO;
    return DECODED;
  }
  offset++;

  // Initial mark
  if (!MATCH_MARK(results->rawbuf[offset], SANYO_HDR_MARK)) {
    return ERR;
  }
  offset++;

  // Skip Second Mark
  if (!MATCH_MARK(results->rawbuf[offset], SANYO_HDR_MARK)) {
    return ERR;
  }
  offset++;

  while (offset + 1 < irparams.rawlen) {
    if (!MATCH_SPACE(results->rawbuf[offset], SANYO_HDR_SPACE)) {
      break;
    }
    offset++;
    if (MATCH_MARK(results->rawbuf[offset], SANYO_ONE_MARK)) {
      data = (data << 1) | 1;
    } 
    else if (MATCH_MARK(results->rawbuf[offset], SANYO_ZERO_MARK)) {
      data <<= 1;
    } 
    else {
      return ERR;
    }
    offset++;
  }

  // Success
  results->bits = (offset - 1) / 2;
  if (results->bits < 12) {
    results->bits = 0;
    return ERR;
  }
  results->value = data;
  results->decode_type = SANYO;
  return DECODED;
}

// Looks like Sony except for timings, 48 chars of data and time/space different
long IRrecv::decodeMitsubishi(decode_results *results) {
  // Serial.print("?!? decoding Mitsubishi:");Serial.print(irparams.rawlen); Serial.print(" want "); Serial.println( 2 * MITSUBISHI_BITS + 2);
  long data = 0;
  if (irparams.rawlen < 2 * MITSUBISHI_BITS + 2) {
    return ERR;
  }
  int offset = 0; // Skip first space
  // Initial space  
  /* Put this back in for debugging - note can't use #DEBUG as if Debug on we don't see the repeat cos of the delay
  Serial.print("IR Gap: ");
  Serial.println( results->rawbuf[offset]);
  Serial.println( "test against:");
  Serial.println(results->rawbuf[offset]);
  */
  /* Not seeing double keys from Mitsubishi
  if (results->rawbuf[offset] < MITSUBISHI_DOUBLE_SPACE_USECS) {
    // Serial.print("IR Gap found: ");
    results->bits = 0;
    results->value = REPEAT;
    results->decode_type = MITSUBISHI;
    return DECODED;
  }
  */
  offset++;

  // Typical
  // 14200 7 41 7 42 7 42 7 17 7 17 7 18 7 41 7 18 7 17 7 17 7 18 7 41 8 17 7 17 7 18 7 17 7 

  // Initial Space
  if (!MATCH_MARK(results->rawbuf[offset], MITSUBISHI_HDR_SPACE)) {
    return ERR;
  }
  offset++;
  while (offset + 1 < irparams.rawlen) {
    if (MATCH_MARK(results->rawbuf[offset], MITSUBISHI_ONE_MARK)) {
      data = (data << 1) | 1;
    } 
    else if (MATCH_MARK(results->rawbuf[offset], MITSUBISHI_ZERO_MARK)) {
      data <<= 1;
    } 
    else {
      // Serial.println("A"); Serial.println(offset); Serial.println(results->rawbuf[offset]);
      return ERR;
    }
    offset++;
    if (!MATCH_SPACE(results->rawbuf[offset], MITSUBISHI_HDR_SPACE)) {
      // Serial.println("B"); Serial.println(offset); Serial.println(results->rawbuf[offset]);
      break;
    }
    offset++;
  }

  // Success
  results->bits = (offset - 1) / 2;
  if (results->bits < MITSUBISHI_BITS) {
    results->bits = 0;
    return ERR;
  }
  results->value = data;
  results->decode_type = MITSUBISHI;
  return DECODED;
}


// Gets one undecoded level at a time from the raw buffer.
// The RC5/6 decoding is easier if the data is broken into time intervals.
// E.g. if the buffer has MARK for 2 time intervals and SPACE for 1,
// successive calls to getRClevel will return MARK, MARK, SPACE.
// offset and used are updated to keep track of the current position.
// t1 is the time interval for a single bit in microseconds.
// Returns -1 for error (measured time interval is not a multiple of t1).
int IRrecv::getRClevel(decode_results *results, int *offset, int *used, int t1) {
  if (*offset >= results->rawlen) {
    // After end of recorded buffer, assume SPACE.
    return SPACE;
  }
  int width = results->rawbuf[*offset];
  int val = ((*offset) % 2) ? MARK : SPACE;
  int correction = (val == MARK) ? MARK_EXCESS : - MARK_EXCESS;

  int avail;
  if (MATCH(width, t1 + correction)) {
    avail = 1;
  } 
  else if (MATCH(width, 2*t1 + correction)) {
    avail = 2;
  } 
  else if (MATCH(width, 3*t1 + correction)) {
    avail = 3;
  } 
  else {
    return -1;
  }

  (*used)++;
  if (*used >= avail) {
    *used = 0;
    (*offset)++;
  }
#ifdef DEBUG
  if (val == MARK) {
    Serial.println("MARK");
  } 
  else {
    Serial.println("SPACE");
  }
#endif
  return val;   
}

long IRrecv::decodeRC5(decode_results *results) {
  if (irparams.rawlen < MIN_RC5_SAMPLES + 2) {
    return ERR;
  }
  int offset = 1; // Skip gap space
  long data = 0;
  int used = 0;
  // Get start bits
  if (getRClevel(results, &offset, &used, RC5_T1) != MARK) return ERR;
  if (getRClevel(results, &offset, &used, RC5_T1) != SPACE) return ERR;
  if (getRClevel(results, &offset, &used, RC5_T1) != MARK) return ERR;
  int nbits;
  for (nbits = 0; offset < irparams.rawlen; nbits++) {
    int levelA = getRClevel(results, &offset, &used, RC5_T1); 
    int levelB = getRClevel(results, &offset, &used, RC5_T1);
    if (levelA == SPACE && levelB == MARK) {
      // 1 bit
      data = (data << 1) | 1;
    } 
    else if (levelA == MARK && levelB == SPACE) {
      // zero bit
      data <<= 1;
    } 
    else {
      return ERR;
    } 
  }

  // Success
  results->bits = nbits;
  results->value = data;
  results->decode_type = RC5;
  return DECODED;
}

long IRrecv::decodeRC6(decode_results *results) {
  if (results->rawlen < MIN_RC6_SAMPLES) {
    return ERR;
  }
  int offset = 1; // Skip first space
  // Initial mark
  if (!MATCH_MARK(results->rawbuf[offset], RC6_HDR_MARK)) {
    return ERR;
  }
  offset++;
  if (!MATCH_SPACE(results->rawbuf[offset], RC6_HDR_SPACE)) {
    return ERR;
  }
  offset++;
  long data = 0;
  int used = 0;
  // Get start bit (1)
  if (getRClevel(results, &offset, &used, RC6_T1) != MARK) return ERR;
  if (getRClevel(results, &offset, &used, RC6_T1) != SPACE) return ERR;
  int nbits;
  for (nbits = 0; offset < results->rawlen; nbits++) {
    int levelA, levelB; // Next two levels
    levelA = getRClevel(results, &offset, &used, RC6_T1); 
    if (nbits == 3) {
      // T bit is double wide; make sure second half matches
      if (levelA != getRClevel(results, &offset, &used, RC6_T1)) return ERR;
    } 
    levelB = getRClevel(results, &offset, &used, RC6_T1);
    if (nbits == 3) {
      // T bit is double wide; make sure second half matches
      if (levelB != getRClevel(results, &offset, &used, RC6_T1)) return ERR;
    } 
    if (levelA == MARK && levelB == SPACE) { // reversed compared to RC5
      // 1 bit
      data = (data << 1) | 1;
    } 
    else if (levelA == SPACE && levelB == MARK) {
      // zero bit
      data <<= 1;
    } 
    else {
      return ERR; // Error
    } 
  }
  // Success
  results->bits = nbits;
  results->value = data;
  results->decode_type = RC6;
  return DECODED;
}
long IRrecv::decodePanasonic(decode_results *results) {
    unsigned long long data = 0;
    int offset = 1;
    
    if (!MATCH_MARK(results->rawbuf[offset], PANASONIC_HDR_MARK)) {
        return ERR;
    }
    offset++;
    if (!MATCH_MARK(results->rawbuf[offset], PANASONIC_HDR_SPACE)) {
        return ERR;
    }
    offset++;
    
    // decode address
    for (int i = 0; i < PANASONIC_BITS; i++) {
        if (!MATCH_MARK(results->rawbuf[offset++], PANASONIC_BIT_MARK)) {
            return ERR;
        }
        if (MATCH_SPACE(results->rawbuf[offset],PANASONIC_ONE_SPACE)) {
            data = (data << 1) | 1;
        } else if (MATCH_SPACE(results->rawbuf[offset],PANASONIC_ZERO_SPACE)) {
            data <<= 1;
        } else {
            return ERR;
        }
        offset++;
    }
    results->value = (unsigned long)data;
    results->panasonicAddress = (unsigned int)(data >> 32);
    results->decode_type = PANASONIC;
    results->bits = PANASONIC_BITS;
    return DECODED;
}

long IRrecv::decodeLG(decode_results *results) {
    long data = 0;
    int offset = 1; // Skip first space
  
    // Initial mark
    if (!MATCH_MARK(results->rawbuf[offset], LG_HDR_MARK)) {
        return ERR;
    }
    offset++; 
    if (irparams.rawlen < 2 * LG_BITS + 1 ) {
        return ERR;
    }
    // Initial space 
    if (!MATCH_SPACE(results->rawbuf[offset], LG_HDR_SPACE)) {
        return ERR;
    }
    offset++;
    for (int i = 0; i < LG_BITS; i++) {
        if (!MATCH_MARK(results->rawbuf[offset], LG_BIT_MARK)) {
            return ERR;
        }
        offset++;
        if (MATCH_SPACE(results->rawbuf[offset], LG_ONE_SPACE)) {
            data = (data << 1) | 1;
        } 
        else if (MATCH_SPACE(results->rawbuf[offset], LG_ZERO_SPACE)) {
            data <<= 1;
        } 
        else {
            return ERR;
        }
        offset++;
    }
    //Stop bit
    if (!MATCH_MARK(results->rawbuf[offset], LG_BIT_MARK)){
        return ERR;
    }
    // Success
    results->bits = LG_BITS;
    results->value = data;
    results->decode_type = LG;
    return DECODED;
}


long IRrecv::decodeJVC(decode_results *results) {
    long data = 0;
    int offset = 1; // Skip first space
    // Check for repeat
    if (irparams.rawlen - 1 == 33 &&
        MATCH_MARK(results->rawbuf[offset], JVC_BIT_MARK) &&
        MATCH_MARK(results->rawbuf[irparams.rawlen-1], JVC_BIT_MARK)) {
        results->bits = 0;
        results->value = REPEAT;
        results->decode_type = JVC;
        return DECODED;
    } 
    // Initial mark
    if (!MATCH_MARK(results->rawbuf[offset], JVC_HDR_MARK)) {
        return ERR;
    }
    offset++; 
    if (irparams.rawlen < 2 * JVC_BITS + 1 ) {
        return ERR;
    }
    // Initial space 
    if (!MATCH_SPACE(results->rawbuf[offset], JVC_HDR_SPACE)) {
        return ERR;
    }
    offset++;
    for (int i = 0; i < JVC_BITS; i++) {
        if (!MATCH_MARK(results->rawbuf[offset], JVC_BIT_MARK)) {
            return ERR;
        }
        offset++;
        if (MATCH_SPACE(results->rawbuf[offset], JVC_ONE_SPACE)) {
            data = (data << 1) | 1;
        } 
        else if (MATCH_SPACE(results->rawbuf[offset], JVC_ZERO_SPACE)) {
            data <<= 1;
        } 
        else {
            return ERR;
        }
        offset++;
    }
    //Stop bit
    if (!MATCH_MARK(results->rawbuf[offset], JVC_BIT_MARK)){
        return ERR;
    }
    // Success
    results->bits = JVC_BITS;
    results->value = data;
    results->decode_type = JVC;
    return DECODED;
}

// SAMSUNGs have a repeat only 4 items long
long IRrecv::decodeSAMSUNG(decode_results *results) {
  long data = 0;
  int offset = 1; // Skip first space
  // Initial mark
  if (!MATCH_MARK(results->rawbuf[offset], SAMSUNG_HDR_MARK)) {
    return ERR;
  }
  offset++;
  // Check for repeat
  if (irparams.rawlen == 4 &&
    MATCH_SPACE(results->rawbuf[offset], SAMSUNG_RPT_SPACE) &&
    MATCH_MARK(results->rawbuf[offset+1], SAMSUNG_BIT_MARK)) {
    results->bits = 0;
    results->value = REPEAT;
    results->decode_type = SAMSUNG;
    return DECODED;
  }
  if (irparams.rawlen < 2 * SAMSUNG_BITS + 4) {
    return ERR;
  }
  // Initial space  
  if (!MATCH_SPACE(results->rawbuf[offset], SAMSUNG_HDR_SPACE)) {
    return ERR;
  }
  offset++;
  for (int i = 0; i < SAMSUNG_BITS; i++) {
    if (!MATCH_MARK(results->rawbuf[offset], SAMSUNG_BIT_MARK)) {
      return ERR;
    }
    offset++;
    if (MATCH_SPACE(results->rawbuf[offset], SAMSUNG_ONE_SPACE)) {
      data = (data << 1) | 1;
    } 
    else if (MATCH_SPACE(results->rawbuf[offset], SAMSUNG_ZERO_SPACE)) {
      data <<= 1;
    } 
    else {
      return ERR;
    }
    offset++;
  }
  // Success
  results->bits = SAMSUNG_BITS;
  results->value = data;
  results->decode_type = SAMSUNG;
  return DECODED;
}

/* -----------------------------------------------------------------------
 * hashdecode - decode an arbitrary IR code.
 * Instead of decoding using a standard encoding scheme
 * (e.g. Sony, NEC, RC5), the code is hashed to a 32-bit value.
 *
 * The algorithm: look at the sequence of MARK signals, and see if each one
 * is shorter (0), the same length (1), or longer (2) than the previous.
 * Do the same with the SPACE signals.  Hszh the resulting sequence of 0's,
 * 1's, and 2's to a 32-bit value.  This will give a unique value for each
 * different code (probably), for most code systems.
 *
 * http://arcfn.com/2010/01/using-arbitrary-remotes-with-arduino.html
 */

// Compare two tick values, returning 0 if newval is shorter,
// 1 if newval is equal, and 2 if newval is longer
// Use a tolerance of 20%
int IRrecv::compare(unsigned int oldval, unsigned int newval) {
  if (newval < oldval * .8) {
    return 0;
  } 
  else if (oldval < newval * .8) {
    return 2;
  } 
  else {
    return 1;
  }
}

// Use FNV hash algorithm: http://isthe.com/chongo/tech/comp/fnv/#FNV-param
#define FNV_PRIME_32 16777619
#define FNV_BASIS_32 2166136261

/* Converts the raw code values into a 32-bit hash code.
 * Hopefully this code is unique for each button.
 * This isn't a "real" decoding, just an arbitrary value.
 */
long IRrecv::decodeHash(decode_results *results) {
  // Require at least 6 samples to prevent triggering on noise
  if (results->rawlen < 6) {
    return ERR;
  }
  long hash = FNV_BASIS_32;
  for (int i = 1; i+2 < results->rawlen; i++) {
    int value =  compare(results->rawbuf[i], results->rawbuf[i+2]);
    // Add value into the hash
    hash = (hash * FNV_PRIME_32) ^ value;
  }
  results->value = hash;
  results->bits = 32;
  results->decode_type = UNKNOWN;
  return DECODED;
}

/* Sharp and DISH support by Todd Treece ( http://unionbridge.org/design/ircommand )

The Dish send function needs to be repeated 4 times, and the Sharp function
has the necessary repeat built in because of the need to invert the signal.

Sharp protocol documentation:
http://www.sbprojects.com/knowledge/ir/sharp.htm

Here are the LIRC files that I found that seem to match the remote codes
from the oscilloscope:

Sharp LCD TV:
http://lirc.sourceforge.net/remotes/sharp/GA538WJSA

DISH NETWORK (echostar 301):
http://lirc.sourceforge.net/remotes/echostar/301_501_3100_5100_58xx_59xx

For the DISH codes, only send the last for characters of the hex.
i.e. use 0x1C10 instead of 0x0000000000001C10 which is listed in the
linked LIRC file.
*/

void IRsend::sendSharpRaw(unsigned long data, int nbits) {
  enableIROut(38);

  // Sending codes in bursts of 3 (normal, inverted, normal) makes transmission
  // much more reliable. That's the exact behaviour of CD-S6470 remote control.
  for (int n = 0; n < 3; n++) {
    for (int i = 1 << (nbits-1); i > 0; i>>=1) {
      if (data & i) {
        mark(SHARP_BIT_MARK);
        space(SHARP_ONE_SPACE);
      }
      else {
        mark(SHARP_BIT_MARK);
        space(SHARP_ZERO_SPACE);
      }
    }
    
    mark(SHARP_BIT_MARK);
    space(SHARP_ZERO_SPACE);
    delay(40);

    data = data ^ SHARP_TOGGLE_MASK;
  }
}

// Sharp send compatible with data obtained through decodeSharp
void IRsend::sendSharp(unsigned int address, unsigned int command) {
  sendSharpRaw((address << 10) | (command << 2) | 2, 15);
}

void IRsend::sendDISH(unsigned long data, int nbits) {
  enableIROut(56);
  mark(DISH_HDR_MARK);
  space(DISH_HDR_SPACE);
  for (int i = 0; i < nbits; i++) {
    if (data & DISH_TOP_BIT) {
      mark(DISH_BIT_MARK);
      space(DISH_ONE_SPACE);
    }
    else {
      mark(DISH_BIT_MARK);
      space(DISH_ZERO_SPACE);
    }
    data <<= 1;
  }
}

/*
 * IRremote
 * Version 0.1 July, 2009
 * Copyright 2009 Ken Shirriff
 * For details, see http://arcfn.com/2009/08/multi-protocol-infrared-remote-library.htm http://arcfn.com
 * Edited by Mitra to add new controller SANYO
 *
 * 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)
* LG added by Darryl Smith (based on the JVC protocol)
 */

#ifndef IRremote_h
#define IRremote_h

// The following are compile-time library options.
// If you change them, recompile the library.
// If DEBUG is defined, a lot of debugging output will be printed during decoding.
// TEST must be defined for the IRtest unittests to work.  It will make some
// methods virtual, which will be slightly slower, which is why it is optional.
// #define DEBUG
// #define TEST

// Results returned from the decoder
class decode_results {
public:
  int decode_type; // NEC, SONY, RC5, UNKNOWN
  union { // This is used for decoding Panasonic and Sharp data
    unsigned int panasonicAddress;
    unsigned int sharpAddress;
  };
  unsigned long value; // Decoded value
  int bits; // Number of bits in decoded value
  volatile unsigned int *rawbuf; // Raw intervals in .5 us ticks
  int rawlen; // Number of records in rawbuf.
};

// Values for decode_type
#define NEC 1
#define SONY 2
#define RC5 3
#define RC6 4
#define DISH 5
#define SHARP 6
#define PANASONIC 7
#define JVC 8
#define SANYO 9
#define MITSUBISHI 10
#define SAMSUNG 11
#define LG 12
#define UNKNOWN -1

// Decoded value for NEC when a repeat code is received
#define REPEAT 0xffffffff

// main class for receiving IR
class IRrecv
{
public:
  IRrecv(int recvpin);
  void blink13(int blinkflag);
  int decode(decode_results *results);
  void enableIRIn();
  void resume();
private:
  // These are called by decode
  int getRClevel(decode_results *results, int *offset, int *used, int t1);
  long decodeNEC(decode_results *results);
  long decodeSony(decode_results *results);
  long decodeSanyo(decode_results *results);
  long decodeMitsubishi(decode_results *results);
  long decodeRC5(decode_results *results);
  long decodeRC6(decode_results *results);
  long decodePanasonic(decode_results *results);
  long decodeLG(decode_results *results);
  long decodeJVC(decode_results *results);
  long decodeSAMSUNG(decode_results *results);
  long decodeHash(decode_results *results);
  int compare(unsigned int oldval, unsigned int newval);

} 
;

// Only used for testing; can remove virtual for shorter code
#ifdef TEST
#define VIRTUAL virtual
#else
#define VIRTUAL
#endif

class IRsend
{
public:
  IRsend() {}
  void sendNEC(unsigned long data, int nbits);
  void sendSony(unsigned long data, int nbits);
  // Neither Sanyo nor Mitsubishi send is implemented yet
  //  void sendSanyo(unsigned long data, int nbits);
  //  void sendMitsubishi(unsigned long data, int nbits);
  void sendRaw(unsigned int buf[], int len, int hz);
  void sendRC5(unsigned long data, int nbits);
  void sendRC6(unsigned long data, int nbits);
  void sendDISH(unsigned long data, int nbits);
  void sendSharp(unsigned int address, unsigned int command);
  void sendSharpRaw(unsigned long data, int nbits);
  void sendPanasonic(unsigned int address, unsigned long data);
  void sendJVC(unsigned long data, int nbits, int repeat); // *Note instead of sending the REPEAT constant if you want the JVC repeat signal sent, send the original code value and change the repeat argument from 0 to 1. JVC protocol repeats by skipping the header NOT by sending a separate code value like NEC does.
  // private:
  void sendSAMSUNG(unsigned long data, int nbits);
  void enableIROut(int khz);
  VIRTUAL void mark(int usec);
  VIRTUAL void space(int usec);
}
;

// Some useful constants

#define USECPERTICK 50  // microseconds per clock interrupt tick
#define RAWBUF 100 // Length of raw duration buffer

// Marks tend to be 100us too long, and spaces 100us too short
// when received due to sensor lag.
#define MARK_EXCESS 50

#endif

/*
 * IRremote
 * Version 0.1 July, 2009
 * 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)
 */

#ifndef IRremoteint_h
#define IRremoteint_h

#if defined(ARDUINO) && ARDUINO >= 100
#include <Arduino.h>
#else
#include <WProgram.h>
#endif

// define which timer to use
//
// Uncomment the timer you wish to use on your board.  If you
// are using another library which uses timer2, you have options
// to switch IRremote to use a different timer.

// Arduino Mega
#if defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
  //#define IR_USE_TIMER1   // tx = pin 11
  #define IR_USE_TIMER2     // tx = pin 9
  //#define IR_USE_TIMER3   // tx = pin 5
  //#define IR_USE_TIMER4   // tx = pin 6
  //#define IR_USE_TIMER5   // tx = pin 46

// Teensy 1.0
#elif defined(__AVR_AT90USB162__)
  #define IR_USE_TIMER1     // tx = pin 17

// Teensy 2.0
#elif defined(__AVR_ATmega32U4__)
  //#define IR_USE_TIMER1   // tx = pin 14
  //#define IR_USE_TIMER3   // tx = pin 9
  #define IR_USE_TIMER4_HS  // tx = pin 10

// Teensy 3.0
#elif defined(__MK20DX128__)
  #define IR_USE_TIMER_CMT  // tx = pin 5

// Teensy++ 1.0 & 2.0
#elif defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB1286__)
  //#define IR_USE_TIMER1   // tx = pin 25
  #define IR_USE_TIMER2     // tx = pin 1
  //#define IR_USE_TIMER3   // tx = pin 16

// Sanguino
#elif defined(__AVR_ATmega644P__) || defined(__AVR_ATmega644__)
  //#define IR_USE_TIMER1   // tx = pin 13
  #define IR_USE_TIMER2     // tx = pin 14

// Atmega8
#elif defined(__AVR_ATmega8P__) || defined(__AVR_ATmega8__)
  #define IR_USE_TIMER1   // tx = pin 9

// Arduino Duemilanove, Diecimila, LilyPad, Mini, Fio, etc
#else
  #define IR_USE_TIMER1   // tx = pin 9
  //#define IR_USE_TIMER2     // tx = pin 3
#endif



#ifdef F_CPU
#define SYSCLOCK F_CPU     // main Arduino clock
#else
#define SYSCLOCK 16000000  // main Arduino clock
#endif

#define ERR 0
#define DECODED 1


// 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 *50-100 for the Mark and *50+100 for the space
// First MARK is the one after the long gap
// pulse parameters in usec
#define NEC_HDR_MARK  9000
#define NEC_HDR_SPACE 4500
#define NEC_BIT_MARK  560
#define NEC_ONE_SPACE 1600
#define NEC_ZERO_SPACE  560
#define NEC_RPT_SPACE 2250

#define SONY_HDR_MARK 2400
#define SONY_HDR_SPACE  600
#define SONY_ONE_MARK 1200
#define SONY_ZERO_MARK  600
#define SONY_RPT_LENGTH 45000
#define SONY_DOUBLE_SPACE_USECS  500  // usually ssee 713 - not using ticks as get number wrapround

// SA 8650B
#define SANYO_HDR_MARK  3500  // seen range 3500
#define SANYO_HDR_SPACE 950 //  seen 950
#define SANYO_ONE_MARK  2400 // seen 2400  
#define SANYO_ZERO_MARK 700 //  seen 700
#define SANYO_DOUBLE_SPACE_USECS  800  // usually ssee 713 - not using ticks as get number wrapround
#define SANYO_RPT_LENGTH 45000

// Mitsubishi RM 75501
// 14200 7 41 7 42 7 42 7 17 7 17 7 18 7 41 7 18 7 17 7 17 7 18 7 41 8 17 7 17 7 18 7 17 7 

// #define MITSUBISHI_HDR_MARK  250  // seen range 3500
#define MITSUBISHI_HDR_SPACE  350 //  7*50+100
#define MITSUBISHI_ONE_MARK 1950 // 41*50-100
#define MITSUBISHI_ZERO_MARK  750 // 17*50-100
// #define MITSUBISHI_DOUBLE_SPACE_USECS  800  // usually ssee 713 - not using ticks as get number wrapround
// #define MITSUBISHI_RPT_LENGTH 45000


#define RC5_T1    889
#define RC5_RPT_LENGTH  46000

#define RC6_HDR_MARK  2666
#define RC6_HDR_SPACE 889
#define RC6_T1    444
#define RC6_RPT_LENGTH  46000

#define SHARP_BIT_MARK 245
#define SHARP_ONE_SPACE 1805
#define SHARP_ZERO_SPACE 795
#define SHARP_GAP 600000
#define SHARP_TOGGLE_MASK 0x3FF
#define SHARP_RPT_SPACE 3000

#define DISH_HDR_MARK 400
#define DISH_HDR_SPACE 6100
#define DISH_BIT_MARK 400
#define DISH_ONE_SPACE 1700
#define DISH_ZERO_SPACE 2800
#define DISH_RPT_SPACE 6200
#define DISH_TOP_BIT 0x8000

#define PANASONIC_HDR_MARK 3502
#define PANASONIC_HDR_SPACE 1750
#define PANASONIC_BIT_MARK 502
#define PANASONIC_ONE_SPACE 1244
#define PANASONIC_ZERO_SPACE 400

#define JVC_HDR_MARK 8000
#define JVC_HDR_SPACE 4000
#define JVC_BIT_MARK 600
#define JVC_ONE_SPACE 1600
#define JVC_ZERO_SPACE 550
#define JVC_RPT_LENGTH 60000

#define LG_HDR_MARK 8000
#define LG_HDR_SPACE 4000
#define LG_BIT_MARK 600
#define LG_ONE_SPACE 1600
#define LG_ZERO_SPACE 550
#define LG_RPT_LENGTH 60000

#define SAMSUNG_HDR_MARK  5000
#define SAMSUNG_HDR_SPACE 5000
#define SAMSUNG_BIT_MARK  560
#define SAMSUNG_ONE_SPACE 1600
#define SAMSUNG_ZERO_SPACE  560
#define SAMSUNG_RPT_SPACE 2250


#define SHARP_BITS 15
#define DISH_BITS 16

#define TOLERANCE 50  // percent tolerance in measurements
#define LTOL (1.0 - TOLERANCE/100.) 
#define UTOL (1.0 + TOLERANCE/100.) 

#define _GAP 5000 // Minimum map between transmissions
#define GAP_TICKS (_GAP/USECPERTICK)

#define TICKS_LOW(us) (int) (((us)*LTOL/USECPERTICK))
#define TICKS_HIGH(us) (int) (((us)*UTOL/USECPERTICK + 1))

// receiver states
#define STATE_IDLE     2
#define STATE_MARK     3
#define STATE_SPACE    4
#define STATE_STOP     5

// information for the interrupt handler
typedef struct {
  uint8_t recvpin;           // pin for IR data from detector
  uint8_t rcvstate;          // state machine
  uint8_t blinkflag;         // TRUE to enable blinking of pin 13 on IR processing
  unsigned int timer;     // state timer, counts 50uS ticks.
  unsigned int rawbuf[RAWBUF]; // raw data
  uint8_t rawlen;         // counter of entries in rawbuf
} 
irparams_t;

// Defined in IRremote.cpp
extern volatile irparams_t irparams;

// IR detector output is active low
#define MARK  0
#define SPACE 1

#define TOPBIT 0x80000000

#define NEC_BITS 32
#define SONY_BITS 12
#define SANYO_BITS 12
#define MITSUBISHI_BITS 16
#define MIN_RC5_SAMPLES 11
#define MIN_RC6_SAMPLES 1
#define PANASONIC_BITS 48
#define JVC_BITS 16
#define LG_BITS 28
#define SAMSUNG_BITS 32




// defines for timer2 (8 bits)
#if defined(IR_USE_TIMER2)
#define TIMER_RESET
#define TIMER_ENABLE_PWM     (TCCR2A |= _BV(COM2B1))
#define TIMER_DISABLE_PWM    (TCCR2A &= ~(_BV(COM2B1)))
#define TIMER_ENABLE_INTR    (TIMSK2 = _BV(OCIE2A))
#define TIMER_DISABLE_INTR   (TIMSK2 = 0)
#define TIMER_INTR_NAME      TIMER2_COMPA_vect
#define TIMER_CONFIG_KHZ(val) ({ \
  const uint8_t pwmval = SYSCLOCK / 2000 / (val); \
  TCCR2A = _BV(WGM20); \
  TCCR2B = _BV(WGM22) | _BV(CS20); \
  OCR2A = pwmval; \
  OCR2B = pwmval / 3; \
})
#define TIMER_COUNT_TOP      (SYSCLOCK * USECPERTICK / 1000000)
#if (TIMER_COUNT_TOP < 256)
#define TIMER_CONFIG_NORMAL() ({ \
  TCCR2A = _BV(WGM21); \
  TCCR2B = _BV(CS20); \
  OCR2A = TIMER_COUNT_TOP; \
  TCNT2 = 0; \
})
#else
#define TIMER_CONFIG_NORMAL() ({ \
  TCCR2A = _BV(WGM21); \
  TCCR2B = _BV(CS21); \
  OCR2A = TIMER_COUNT_TOP / 8; \
  TCNT2 = 0; \
})
#endif
#if defined(CORE_OC2B_PIN)
#define TIMER_PWM_PIN        CORE_OC2B_PIN  /* Teensy */
#elif defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
#define TIMER_PWM_PIN        9  /* Arduino Mega */
#elif defined(__AVR_ATmega644P__) || defined(__AVR_ATmega644__)
#define TIMER_PWM_PIN        14 /* Sanguino */
#else
#define TIMER_PWM_PIN        3  /* Arduino Duemilanove, Diecimila, LilyPad, etc */
#endif


// defines for timer1 (16 bits)
#elif defined(IR_USE_TIMER1)
#define TIMER_RESET
#define TIMER_ENABLE_PWM     (TCCR1A |= _BV(COM1A1))
#define TIMER_DISABLE_PWM    (TCCR1A &= ~(_BV(COM1A1)))
#if defined(__AVR_ATmega8P__) || defined(__AVR_ATmega8__)
  #define TIMER_ENABLE_INTR    (TIMSK = _BV(OCIE1A))
  #define TIMER_DISABLE_INTR   (TIMSK = 0)
#else
  #define TIMER_ENABLE_INTR    (TIMSK1 = _BV(OCIE1A))
  #define TIMER_DISABLE_INTR   (TIMSK1 = 0)
#endif
#define TIMER_INTR_NAME      TIMER1_COMPA_vect
#define TIMER_CONFIG_KHZ(val) ({ \
  const uint16_t pwmval = SYSCLOCK / 2000 / (val); \
  TCCR1A = _BV(WGM11); \
  TCCR1B = _BV(WGM13) | _BV(CS10); \
  ICR1 = pwmval; \
  OCR1A = pwmval / 3; \
})
#define TIMER_CONFIG_NORMAL() ({ \
  TCCR1A = 0; \
  TCCR1B = _BV(WGM12) | _BV(CS10); \
  OCR1A = SYSCLOCK * USECPERTICK / 1000000; \
  TCNT1 = 0; \
})
#if defined(CORE_OC1A_PIN)
#define TIMER_PWM_PIN        CORE_OC1A_PIN  /* Teensy */
#elif defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
#define TIMER_PWM_PIN        11  /* Arduino Mega */
#elif defined(__AVR_ATmega644P__) || defined(__AVR_ATmega644__)
#define TIMER_PWM_PIN        13 /* Sanguino */
#else
#define TIMER_PWM_PIN        9  /* Arduino Duemilanove, Diecimila, LilyPad, etc */
#endif


// defines for timer3 (16 bits)
#elif defined(IR_USE_TIMER3)
#define TIMER_RESET
#define TIMER_ENABLE_PWM     (TCCR3A |= _BV(COM3A1))
#define TIMER_DISABLE_PWM    (TCCR3A &= ~(_BV(COM3A1)))
#define TIMER_ENABLE_INTR    (TIMSK3 = _BV(OCIE3A))
#define TIMER_DISABLE_INTR   (TIMSK3 = 0)
#define TIMER_INTR_NAME      TIMER3_COMPA_vect
#define TIMER_CONFIG_KHZ(val) ({ \
  const uint16_t pwmval = SYSCLOCK / 2000 / (val); \
  TCCR3A = _BV(WGM31); \
  TCCR3B = _BV(WGM33) | _BV(CS30); \
  ICR3 = pwmval; \
  OCR3A = pwmval / 3; \
})
#define TIMER_CONFIG_NORMAL() ({ \
  TCCR3A = 0; \
  TCCR3B = _BV(WGM32) | _BV(CS30); \
  OCR3A = SYSCLOCK * USECPERTICK / 1000000; \
  TCNT3 = 0; \
})
#if defined(CORE_OC3A_PIN)
#define TIMER_PWM_PIN        CORE_OC3A_PIN  /* Teensy */
#elif defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
#define TIMER_PWM_PIN        5  /* Arduino Mega */
#else
#error "Please add OC3A pin number here\n"
#endif


// defines for timer4 (10 bits, high speed option)
#elif defined(IR_USE_TIMER4_HS)
#define TIMER_RESET
#define TIMER_ENABLE_PWM     (TCCR4A |= _BV(COM4A1))
#define TIMER_DISABLE_PWM    (TCCR4A &= ~(_BV(COM4A1)))
#define TIMER_ENABLE_INTR    (TIMSK4 = _BV(TOIE4))
#define TIMER_DISABLE_INTR   (TIMSK4 = 0)
#define TIMER_INTR_NAME      TIMER4_OVF_vect
#define TIMER_CONFIG_KHZ(val) ({ \
  const uint16_t pwmval = SYSCLOCK / 2000 / (val); \
  TCCR4A = (1<<PWM4A); \
  TCCR4B = _BV(CS40); \
  TCCR4C = 0; \
  TCCR4D = (1<<WGM40); \
  TCCR4E = 0; \
  TC4H = pwmval >> 8; \
  OCR4C = pwmval; \
  TC4H = (pwmval / 3) >> 8; \
  OCR4A = (pwmval / 3) & 255; \
})
#define TIMER_CONFIG_NORMAL() ({ \
  TCCR4A = 0; \
  TCCR4B = _BV(CS40); \
  TCCR4C = 0; \
  TCCR4D = 0; \
  TCCR4E = 0; \
  TC4H = (SYSCLOCK * USECPERTICK / 1000000) >> 8; \
  OCR4C = (SYSCLOCK * USECPERTICK / 1000000) & 255; \
  TC4H = 0; \
  TCNT4 = 0; \
})
#if defined(CORE_OC4A_PIN)
#define TIMER_PWM_PIN        CORE_OC4A_PIN  /* Teensy */
#elif defined(__AVR_ATmega32U4__)
#define TIMER_PWM_PIN        13  /* Leonardo */
#else
#error "Please add OC4A pin number here\n"
#endif


// defines for timer4 (16 bits)
#elif defined(IR_USE_TIMER4)
#define TIMER_RESET
#define TIMER_ENABLE_PWM     (TCCR4A |= _BV(COM4A1))
#define TIMER_DISABLE_PWM    (TCCR4A &= ~(_BV(COM4A1)))
#define TIMER_ENABLE_INTR    (TIMSK4 = _BV(OCIE4A))
#define TIMER_DISABLE_INTR   (TIMSK4 = 0)
#define TIMER_INTR_NAME      TIMER4_COMPA_vect
#define TIMER_CONFIG_KHZ(val) ({ \
  const uint16_t pwmval = SYSCLOCK / 2000 / (val); \
  TCCR4A = _BV(WGM41); \
  TCCR4B = _BV(WGM43) | _BV(CS40); \
  ICR4 = pwmval; \
  OCR4A = pwmval / 3; \
})
#define TIMER_CONFIG_NORMAL() ({ \
  TCCR4A = 0; \
  TCCR4B = _BV(WGM42) | _BV(CS40); \
  OCR4A = SYSCLOCK * USECPERTICK / 1000000; \
  TCNT4 = 0; \
})
#if defined(CORE_OC4A_PIN)
#define TIMER_PWM_PIN        CORE_OC4A_PIN
#elif defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
#define TIMER_PWM_PIN        6  /* Arduino Mega */
#else
#error "Please add OC4A pin number here\n"
#endif


// defines for timer5 (16 bits)
#elif defined(IR_USE_TIMER5)
#define TIMER_RESET
#define TIMER_ENABLE_PWM     (TCCR5A |= _BV(COM5A1))
#define TIMER_DISABLE_PWM    (TCCR5A &= ~(_BV(COM5A1)))
#define TIMER_ENABLE_INTR    (TIMSK5 = _BV(OCIE5A))
#define TIMER_DISABLE_INTR   (TIMSK5 = 0)
#define TIMER_INTR_NAME      TIMER5_COMPA_vect
#define TIMER_CONFIG_KHZ(val) ({ \
  const uint16_t pwmval = SYSCLOCK / 2000 / (val); \
  TCCR5A = _BV(WGM51); \
  TCCR5B = _BV(WGM53) | _BV(CS50); \
  ICR5 = pwmval; \
  OCR5A = pwmval / 3; \
})
#define TIMER_CONFIG_NORMAL() ({ \
  TCCR5A = 0; \
  TCCR5B = _BV(WGM52) | _BV(CS50); \
  OCR5A = SYSCLOCK * USECPERTICK / 1000000; \
  TCNT5 = 0; \
})
#if defined(CORE_OC5A_PIN)
#define TIMER_PWM_PIN        CORE_OC5A_PIN
#elif defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
#define TIMER_PWM_PIN        46  /* Arduino Mega */
#else
#error "Please add OC5A pin number here\n"
#endif


// defines for special carrier modulator timer
#elif defined(IR_USE_TIMER_CMT)
#define TIMER_RESET ({      \
  uint8_t tmp = CMT_MSC;    \
  CMT_CMD2 = 30;      \
})
#define TIMER_ENABLE_PWM     CORE_PIN5_CONFIG = PORT_PCR_MUX(2)|PORT_PCR_DSE|PORT_PCR_SRE
#define TIMER_DISABLE_PWM    CORE_PIN5_CONFIG = PORT_PCR_MUX(1)|PORT_PCR_DSE|PORT_PCR_SRE
#define TIMER_ENABLE_INTR    NVIC_ENABLE_IRQ(IRQ_CMT)
#define TIMER_DISABLE_INTR   NVIC_DISABLE_IRQ(IRQ_CMT)
#define TIMER_INTR_NAME      cmt_isr
#ifdef ISR
#undef ISR
#endif
#define ISR(f) void f(void)
#if F_BUS == 48000000
#define CMT_PPS_VAL 5
#else
#define CMT_PPS_VAL 2
#endif
#define TIMER_CONFIG_KHZ(val) ({  \
  SIM_SCGC4 |= SIM_SCGC4_CMT; \
  SIM_SOPT2 |= SIM_SOPT2_PTD7PAD; \
  CMT_PPS = CMT_PPS_VAL;    \
  CMT_CGH1 = 2667 / val;    \
  CMT_CGL1 = 5333 / val;    \
  CMT_CMD1 = 0;     \
  CMT_CMD2 = 30;      \
  CMT_CMD3 = 0;     \
  CMT_CMD4 = 0;     \
  CMT_OC = 0x60;      \
  CMT_MSC = 0x01;     \
})
#define TIMER_CONFIG_NORMAL() ({  \
  SIM_SCGC4 |= SIM_SCGC4_CMT; \
  CMT_PPS = CMT_PPS_VAL;    \
  CMT_CGH1 = 1;     \
  CMT_CGL1 = 1;     \
  CMT_CMD1 = 0;     \
  CMT_CMD2 = 30;      \
  CMT_CMD3 = 0;     \
  CMT_CMD4 = 19;      \
  CMT_OC = 0;     \
  CMT_MSC = 0x03;     \
})
#define TIMER_PWM_PIN        5


#else // unknown timer
#error "Internal code configuration error, no known IR_USE_TIMER# defined\n"
#endif


// defines for blinking the LED
#if defined(CORE_LED0_PIN)
#define BLINKLED       CORE_LED0_PIN
#define BLINKLED_ON()  (digitalWrite(CORE_LED0_PIN, HIGH))
#define BLINKLED_OFF() (digitalWrite(CORE_LED0_PIN, LOW))
#elif defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
#define BLINKLED       13
#define BLINKLED_ON()  (PORTB |= B10000000)
#define BLINKLED_OFF() (PORTB &= B01111111)
#elif defined(__AVR_ATmega644P__) || defined(__AVR_ATmega644__)
#define BLINKLED       0
#define BLINKLED_ON()  (PORTD |= B00000001)
#define BLINKLED_OFF() (PORTD &= B11111110)
#else
#define BLINKLED       13
#define BLINKLED_ON()  (PORTB |= B00100000)
#define BLINKLED_OFF() (PORTB &= B11011111)
#endif

#endif

void level_choose()
{
 
    while(menu_flag)// Enter the Difficulty Selection Interface at the End or Beginning
    {
      lcd.clear();
      lcd.setCursor(0,0);
      lcd.print(" level choose:");
      lcd.setCursor(0,1);
      lcd.print("   level:");
      delay(100);// The above is the difficulty of choosing the interface
 
       if (irrecv.decode(&results)) // When the key is pressed
       {
          translateIR_level();
          irrecv.resume(); // receive the next value
        }  
    }
}

void translateIR_level()
{
 switch(results.value)// Determine which key is pressed
  {
    case BTN_1: menu_flag=0;      //no longer display menu.
                lcd.print("1");delay(2000);
                lcd.clear();
                remrun_flag=1;   // Begin to Enter Difficulty 1 Memory Game
                strcpy(buf,empty); break;  // Clear the "1" display you just entered
    case BTN_2: menu_flag=0;lcd.print("2");delay(2000);   // Choose Difficulty 2, Write as Difficulty 1
    lcd.clear();addrun_flag=1;strcpy(buf,empty);break;
    case BTN_3: menu_flag=0;lcd.print("3");delay(2000);  // Choose Difficulty 3, Write as Difficulty 1
    lcd.clear();mulrun_flag=1;strcpy(buf,empty); break;   
    default:
    lcd.clear(); 
    lcd.setCursor(0,0);
    lcd.print("you should ");
    lcd.setCursor(0,1);
    lcd.print("write 1/2/3");
    delay(2000);
    lcd.clear(); 
    results.value=0;
    break;
   } 
  }

void RGB_init()
{
  pinMode(RED, OUTPUT);
  pinMode(GREEN, OUTPUT);
  pinMode(BLUE, OUTPUT);
  digitalWrite(RED, HIGH);
  digitalWrite(GREEN, LOW);
  digitalWrite(BLUE, LOW);
  close_light_effect();
}

void close_light_effect()
{
  analogWrite(RED, 0);
  analogWrite(BLUE, 0);
  analogWrite(GREEN,0);
}

  
void T_light_effect()
{
  int i=3;
  while(i--)
  {
  analogWrite(RED, 0);
  analogWrite(BLUE, 0);
  analogWrite(GREEN,0);
  delay(100);
  analogWrite(RED, 0);
  analogWrite(BLUE, 0);
  analogWrite(GREEN,5);
  delay(100);
  analogWrite(RED, 0);
  analogWrite(BLUE, 0);
  analogWrite(GREEN,0);
  }
}

void main_run()
{
   reminder_set();           // When entering the game, the first line shows "Begin counting!
   produce_question();       // Generate Random Numbers and Display Topics
   end_display();           // Show the end of the game, scoring interface
   if(irrecv.decode(&results)) // have we received an IR signal?
   {
      translateIR();       // After choosing the difficulty,the function is used to Record answers press the corresponding key to produce the effect
      irrecv.resume(); // receive the next value
    }  
}

void produce_question()   // after Question 5 does not produce random numbers
{
  if(var_flag&&(qut_cnt!=QUESTION_TOTAL_NUM))
  {
    var1 = random(999);
    var2 = random(999); 
    var3 = random(9999999); 
    var_flag=0;
  
    if(remrun_flag==0)  // When it's not the first level 
    {
    lcd.setCursor(0,1);
    lcd.print(var1);
    
      if(mulrun_flag)   //if is level 3
        lcd.print("X");
      if(addrun_flag)   //if is level 2
        lcd.print("+");
    
    lcd.print(var2);
    lcd.print("=");
    lcd.print(buf);
  
    delay(2000);
    lcd.clear();
    }
    
   if(remrun_flag)   // When it's  the first level 
  {
    lcd.setCursor(0,1);
    lcd.print(var3);
    delay(2000);
    lcd.clear();
   }
 }
   lcd.setCursor(0,1);
   lcd.print(buf);
}

void judge_TorF()
{
  input_digital_cnt=0;
  result=atoi(buf);
  
  if(mulrun_flag)  // Judge whether the multiplication answer is correct
  {
    if(result==var1*var2) correct();
    else  error();
  }

  if(addrun_flag) // Judging whether the additive answer is correct
  {
    if(result==var1+var2) correct();
       else  {error();}
  }

  if(remrun_flag) // Judging whether the answer to numeration is correct
  {
    if(result==var3)   correct();
       else  {error();}
  }
}

void error()
{
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("sorry......");
  lcd.setCursor(0,1);  
  lcd.print("you are wrong");  // Display the content when the answer is wrong        
  F_voice_effect();           // Sound effect
  delay(555);
  var_flag=1;
  lcd.clear();
  btn_ret();                // Clear up the answers to the previous question
  btn_cnt=0;            
  qut_cnt++;        // Number of questions plus 1
}

void correct()
{
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Congratulations!");
  lcd.setCursor(0,1);
  lcd.print("you got it right");
  T_light_effect();
  T_voice_effect();    
  var_flag=1;
  lcd.clear();
  btn_ret();
  btn_cnt=0;
  T_cnt++;
  qut_cnt++;
}

#ifndef MEMORY_ARITHMETIC_GAME_H
#define MEMORY_ARITHMETIC_GAME_H

#include "LiquidCrystal.h"
#include "pitches.h"
#include "IRremote.h"

/****************************************Pin*******************************************************************/
/*lcd1602 pin*/
LiquidCrystal lcd(2, A3,8, 7, A2, 4);

/*IR  pin*/
const uint8_t receiver = 12; 
IRrecv irrecv(receiver);     
decode_results results; 

/*RGB pin*/
const uint8_t BLUE=5;
const uint8_t GREEN=6;
const uint8_t RED=9;

/*buzzer pin*/
const uint8_t BUZZER=3;

/***********************************variable definition***************************************************************************/
/*Definition of keys*/
// Example: The equivalent of BTN_0 and 0xFF6897 makes the name look simpler and easier to understand.
#define BTN_0 0xFF6897 
#define BTN_1 0xFF30CF 
#define BTN_2 0xFF18E7 
#define BTN_3 0xFF7A85 
#define BTN_4 0xFF10EF 
#define BTN_5 0xFF38C7 
#define BTN_6 0xFF5AA5 
#define BTN_7 0xFF42BD 
#define BTN_8 0xFF4AB5 
#define BTN_9 0xFF52AD 
#define BTN_RET 0xFFB04F 
#define BTN_EQ 0xFF9867 
#define BTN_VOL 0xFFA857

#define QUESTION_TOTAL_NUM 5    //setting the number of question

/*Storage Difficulty 2.3 Addition (Multiplication) Subformula 1 and 2*/
uint16_t var1=0;
uint16_t var2=0;
/*Numbers to be memorized in difficulty 1*/
uint16_t var3=0;

// flag: As a switch
// variable flag, 
//which produces only one random number before the first calculation is completed
uint8_t var_flag=1;

//multiplier switch of the third level
uint8_t mulrun_flag=0;

// the adder switch of the second level
uint8_t addrun_flag=0;

//memory switch of the first level
uint8_t remrun_flag=0;

 // Select the difficulty interface marker to display (switch) this interface 
 //only at the end or beginning of the game
uint8_t menu_flag=1;

uint8_t save_buf_flag=0;

// Storing the number you input
char buf[16]={0};

// Stores the number each time you input it
//Example: pressing "2" after 1 and then "5"
//"1", "12", "125"
char pre_buf[16][16]={0};
uint16_t result=0;

//count the number of times
// When backspace is used, the number ordering for each input is stored in a two-dimensional array.
// Example: Enter "2" after 1 and then "5"
//                "1", "12", "125"
// btn_cnt         0     1     2
// btn_cnt is the ordinal number of a number in a two-dimensional array according to pre_buf [cnt]
// Pre_buf [0] is "1"
// pre_buf [1] is "12"
// pre_buf [2] is "125".
uint8_t btn_cnt=0;


uint8_t qut_cnt=0;  //the number of the maths question
uint8_t T_cnt=0;    //the right number of the answer
uint8_t input_digital_cnt=0;

//Withdrawal
byte empty[8] = {B00000,B00000,B00000,B00000,B00000,B00000,B00000,B00000};






#endif

#include "LiquidCrystal.h"
#include "pitches.h"
#include "IRremote.h"
#include "string.h"
#include "Memory_arithmetic_game.h"

/***********************************************************************************************************************
 *                                       Memory_arithmetic_game                                                                      *
 *                           Copyright (c)     Elegoo     //www.elegoo.com                                                                              
 *                           Author:           wee                                                                   *                                                                                   *
 *                           Version number :  1.00                                                                                       *
 *                           Date :            2019.6.18                                                                                   *
 ***********************************************************************************************************************/

void setup() {
  
  lcd.begin(16, 2);

  irrecv.enableIRIn(); 

  randomSeed(analogRead(0)); 

  RGB_init();
}

void loop() 
{
  
  level_choose();
 
  main_run();
  
}

/*************************************************
 * Public Constants
 *************************************************/
 
#define NOTE_B0  31
#define NOTE_C1  33
#define NOTE_CS1 35
#define NOTE_D1  37
#define NOTE_DS1 39
#define NOTE_E1  41
#define NOTE_F1  44
#define NOTE_FS1 46
#define NOTE_G1  49
#define NOTE_GS1 52
#define NOTE_A1  55
#define NOTE_AS1 58
#define NOTE_B1  62
#define NOTE_C2  65
#define NOTE_CS2 69
#define NOTE_D2  73
#define NOTE_DS2 78
#define NOTE_E2  82
#define NOTE_F2  87
#define NOTE_FS2 93
#define NOTE_G2  98
#define NOTE_GS2 104
#define NOTE_A2  110
#define NOTE_AS2 117
#define NOTE_B2  123
#define NOTE_C3  131
#define NOTE_CS3 139
#define NOTE_D3  147
#define NOTE_DS3 156
#define NOTE_E3  165
#define NOTE_F3  175
#define NOTE_FS3 185
#define NOTE_G3  196
#define NOTE_GS3 208
#define NOTE_A3  220
#define NOTE_AS3 233
#define NOTE_B3  247
#define NOTE_C4  262
#define NOTE_CS4 277
#define NOTE_D4  294
#define NOTE_DS4 311
#define NOTE_E4  330
#define NOTE_F4  349
#define NOTE_FS4 370
#define NOTE_G4  392
#define NOTE_GS4 415
#define NOTE_A4  440
#define NOTE_AS4 466
#define NOTE_B4  494
#define NOTE_C5  523
#define NOTE_CS5 554
#define NOTE_D5  587
#define NOTE_DS5 622
#define NOTE_E5  659
#define NOTE_F5  698
#define NOTE_FS5 740
#define NOTE_G5  784
#define NOTE_GS5 831
#define NOTE_A5  880
#define NOTE_AS5 932
#define NOTE_B5  988
#define NOTE_C6  1047
#define NOTE_CS6 1109
#define NOTE_D6  1175
#define NOTE_DS6 1245
#define NOTE_E6  1319
#define NOTE_F6  1397
#define NOTE_FS6 1480
#define NOTE_G6  1568
#define NOTE_GS6 1661
#define NOTE_A6  1760
#define NOTE_AS6 1865
#define NOTE_B6  1976
#define NOTE_C7  2093
#define NOTE_CS7 2217
#define NOTE_D7  2349
#define NOTE_DS7 2489
#define NOTE_E7  2637
#define NOTE_F7  2794
#define NOTE_FS7 2960
#define NOTE_G7  3136
#define NOTE_GS7 3322
#define NOTE_A7  3520
#define NOTE_AS7 3729
#define NOTE_B7  3951
#define NOTE_C8  4186
#define NOTE_CS8 4435
#define NOTE_D8  4699
#define NOTE_DS8 4978

void T_voice_effect()
{tone(BUZZER, NOTE_F5, 500);}


void F_voice_effect()
{tone(BUZZER, NOTE_GS2, 500);}


void end_voice_effect()
{
  int melody[] = {
  NOTE_C5, NOTE_D5, NOTE_E5, NOTE_F5, NOTE_G5, NOTE_A5, NOTE_B5, NOTE_C6};
  
  int thisNote;
  
  if(T_cnt==QUESTION_TOTAL_NUM)
  {
      for (thisNote = 8; thisNote >= 0; thisNote--) 
      {
        tone(BUZZER, melody[thisNote], 100);
        delay(100);
      }
  }
  else
  {
     for (thisNote = 0; thisNote < 8; thisNote++) 
     {
        tone(BUZZER, melody[thisNote], 100);
        delay(100);
     }
   }
}