// Sample RFM69 sender/node sketch for the MotionMote
// http://lowpowerlab.com/motion
// PIR motion sensor connected to D3 (INT1)
// When RISE happens on D3, the sketch transmits a "MOTION" msg to receiver Moteino and goes back to sleep
// In sleep mode, Moteino + PIR motion sensor use about ~78uA
// Get the RFM69 and SPIFlash library at: https://github.com/LowPowerLab/
// Make sure you adjust the settings in the configuration section below !!!

// **********************************************************************************
// Copyright Felix Rusu, LowPowerLab.com
// Library and code by Felix Rusu - felix@lowpowerlab.com
// **********************************************************************************
// License
// **********************************************************************************
// 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 3 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/>.
//
// Licence can be viewed at
// http://www.gnu.org/licenses/gpl-3.0.txt
//
// Please maintain this license information along with authorship
// and copyright notices in any redistribution of this code
// **********************************************************************************

#include <RFM69.h>    //get it here: https://www.github.com/lowpowerlab/rfm69
#include <SPI.h>
#include <LowPower.h> //get library from: https://github.com/lowpowerlab/lowpower
//writeup here: http://www.rocketscream.com/blog/2011/07/04/lightweight-low-power-arduino-library/

//*********************************************************************************************
// *********** IMPORTANT SETTINGS - YOU MUST CHANGE/ONFIGURE TO FIT YOUR HARDWARE *************
//*********************************************************************************************
#define NODEID        2    //unique for each node on same network
#define NETWORKID     100  //the same on all nodes that talk to each other
#define GATEWAYID     1
//Match frequency to the hardware version of the radio on your Moteino (uncomment one):
//#define FREQUENCY     RF69_433MHZ
//#define FREQUENCY     RF69_868MHZ
#define FREQUENCY     RF69_915MHZ
#define ENCRYPTKEY    "sampleEncryptKey" //exactly the same 16 characters/bytes on all nodes!
#define IS_RFM69HW    //uncomment only for RFM69HW! Remove/comment if you have RFM69W! --------- DET VIRKER PERFEKT, SÅ LÆNGE JEG KOMMENTERER DENNE LINIE UD, ALTSÅ SÆTTER DEN TIL RFM69W
//*********************************************************************************************

#define ACK_TIME      30 // max # of ms to wait for an ack
#define MOTIONPIN      1 //hardware interrupt 1 (D3)

//#define SERIAL_EN             //comment this out when deploying to an installed SM to save a few KB of sketch size
#define SERIAL_BAUD    115200
#ifdef SERIAL_EN
#define DEBUG(input)   {Serial.print(input); delay(1);}
#define DEBUGln(input) {Serial.println(input); delay(1);}
#else
#define DEBUG(input);
#define DEBUGln(input);
#endif

RFM69 radio;
volatile boolean motionDetected = false;
char sendBuf[32];
byte sendLen;

void setup() {
  Serial.begin(SERIAL_BAUD);
  radio.initialize(FREQUENCY, NODEID, NETWORKID);
#ifdef IS_RFM69HW
 radio.setHighPower(); //uncomment only for RFM69HW!
#endif
  radio.encrypt(ENCRYPTKEY);
  pinMode(MOTIONPIN, INPUT);
  attachInterrupt(MOTIONPIN, motionIRQ, FALLING);
  char buff[50];
  sprintf(buff, "\nTransmitting at %d Mhz...", FREQUENCY == RF69_433MHZ ? 433 : FREQUENCY == RF69_868MHZ ? 868 : 915);
  DEBUGln(buff);
  
}


int detectedNumber = 0; 
const int detectedRequired = 3; 
//----------

void motionIRQ()
{
  
  detectedNumber++;
  
  
  motionDetected = true;
}


void loop() 
{
  
  if (motionDetected = true && (detectedNumber == detectedRequired)); //
  {
    
    detectedNumber = 0; //reset "counter"
    
        
    
    sprintf(sendBuf, "HI");
    sendLen = strlen(sendBuf);

    if (radio.sendWithRetry(GATEWAYID, sendBuf, sendLen));
    {
      DEBUG("HI ACK:OK! RSSI:");
      DEBUG(radio.RSSI);
      
    }
    

     radio.sleep();
    
  }
  
  {
   
  }
  
  motionDetected = false; //do NOT move this after the SLEEP line below or motion will never be detected
  LowPower.powerDown(SLEEP_8S, ADC_OFF, BOD_OFF);
  
}