arduino_serial_mpd_temp

#include <IRremote.h>
#include <LiquidCrystal.h>

int RECV_PIN = 8;
IRrecv irrecv(RECV_PIN);
decode_results results;

LiquidCrystal lcd (3,2,0,1,4,12,6);

int codeType = -1;
unsigned long codeValue;
int codeLen;
int toggle = 0;
int a;
int ai=1;
int b;
int bi=1;
int c;
int ci=1;
float tempC;
int tempPin = 0;


void setup()
{
  Serial.begin(9600);
  lcd.begin(20,4);
  irrecv.enableIRIn();
  pinMode(5,OUTPUT);
  pinMode(10,OUTPUT);
  pinMode(13,OUTPUT);
}

char getchr()
{
  if (Serial.available()) {
    delay(1);
    while (Serial.available() > 0) {
    char ch = Serial.read();
    return ch;
    }
  }
}

void showCode(decode_results *results) {
  codeType = results->decode_type;
  int count = results->rawlen;
  if (codeType == UNKNOWN) {
    codeLen = results->rawlen - 1;
  }
  else{
    if (codeType == NEC) {
      if (results->value == REPEAT) {
        return;
      }
    }
    else {
    }
    if (results->value >= 0x800) {
      results->value = results->value - 0x800;
    }
    Serial.println(results->value, HEX);
    codeValue = results->value;
    codeLen = results->bits;
  }
}

void loop()
{
  if(Serial.available() > 0) {
    char in = getchr();
    if(in=='?') {
      lcd.clear();
      lcd.setCursor(0, 0);
    }
    else if(in=='\n') {
    }
    else if(in=='\r') {
    }
    else if(in=='|') {
      lcd.setCursor(0,1);
    }
    else if(in=='<') {
      lcd.setCursor(0,2);
    }
    else if(in=='>') {
      lcd.setCursor(0,3);
    }
    else if(in=='*') {
      if(Serial.available() > 0){
        char in1 = getchr();
        switch (in1)
        {
          case '1':
            a=(ai%2);
            digitalWrite(5,a);
            ai++;
          break;
          case '2':
            b=(bi%2);
            digitalWrite(10,b);
            bi++;
          break;
          case '3':
            c=(ci%2);
            digitalWrite(13,c);
            ci++;
          break;
          case '0':
            tempC = analogRead(tempPin);
            tempC = (5.0 * tempC * 100.0)/1024.0;
[            lcd.clear();
            lcd.setCursor(0, 0);
            lcd.print("CURRENT TEMPERATURE");
            lcd.setCursor(0, 1);
            lcd.print("        ");
            lcd.print((byte)tempC);
            lcd.print(" C   ");
          break;
          default:
          break;
        }
      }
    }
    else
      lcd.print(in);
  }

  if (irrecv.decode(&results)) {
    showCode(&results);
    irrecv.resume();
  }
}