/*
 *  ------Geiger Tube board (Arduino Code) Example--------
 *
 *  Explanation: This example shows how to get the signal from the Geiger Tube
 *  in Arduino, we use one of the Arduino interrupt pins (PIN2).
 *  We count the time (ms) between two pulses of the Geiger tube.
 *
 *  Copyright (C) 2011 Libelium Comunicaciones Distribuidas S.L.
 *  http://www.libelium.com
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 *  Version:        0.3
 *  Design:     Marcos Yarza, David Gascon
 *  Implementation: Marcos Yarza
 */

// Conversion factor - CPM to uSV/h
#include <PString.h>

#define CONV_FACTOR 0.00812

// Variables
//int ledArray [] = {10,11,12,13,9};
int geiger_input = 2;
long count = 0;
long countPerMinute = 0;
long timePrevious = 0;
long timePreviousMeassure = 0;
long time = 0;
long countPrevious = 0;
float radiationValue = 0.0;
long radValue=0;
char outString[50];
PString transmission(outString,50);

void setup(){
  pinMode(geiger_input, INPUT);
  digitalWrite(geiger_input,HIGH);
  Serial.begin(115200);
  attachInterrupt(0,countPulse,FALLING);
}

void loop(){

  if (millis()-timePreviousMeassure > 10000){
    detachInterrupt(0);
    countPerMinute = 6*count;
    radiationValue = countPerMinute * CONV_FACTOR;
    count = 0;
    transmission.begin();
    transmission += "$RDATA,";
    transmission += countPerMinute;
    transmission += ",cpm,";
    transmission += radiationValue;
    transmission += ",uSv/h~";
    /*tempMission ="$";
     tempMission += "cpm =";
     tempMission += countPerMinute,DEC;
     tempMission += " - ";
     tempMission += "uSv/h = ";
     radValue = radiationValue;
     tempMission += radValue,DEC;
     transmission = tempMission;*/

    timePreviousMeassure = millis();
    Serial.println(outString);
    attachInterrupt(0,countPulse,FALLING);
  }


}

void countPulse(){
  detachInterrupt(0);
  count++;
  while(digitalRead(2)==0){
    Serial.flush();
  }
  attachInterrupt(0,countPulse,FALLING);
}