// RFM69HCW Example Sketch
// Send serial input characters from one RFM69 node to another
// Based on RFM69 library sample code by Felix Rusu
// http://LowPowerLab.com/contact
// Modified for RFM69HCW by Mike Grusin, 4/16

// This sketch will show you the basics of using an
// RFM69HCW radio module. SparkFun's part numbers are:
// 915MHz: https://www.sparkfun.com/products/12775
// 434MHz: https://www.sparkfun.com/products/12823

// See the hook-up guide for wiring instructions:
// https://learn.sparkfun.com/tutorials/rfm69hcw-hookup-guide

// Uses the RFM69 library by Felix Rusu, LowPowerLab.com
// Original library: https://www.github.com/lowpowerlab/rfm69
// SparkFun repository: https://github.com/sparkfun/RFM69HCW_Breakout

// Include the RFM69 and SPI libraries:
#include <SPI.h>
#include <avr/wdt.h>
#include <RFM69.h>
#include <avr/sleep.h>



// Addresses for this node. CHANGE THESE FOR EACH NODE!

#define NETWORKID     0   // Must be the same for all nodes
#define MYNODEID      2   // My node ID
#define TONODEID      1   // Destination node ID

// RFM69 frequency, uncomment the frequency of your module:

//#define FREQUENCY   RF69_433MHZ
#define FREQUENCY     RF69_915MHZ

// AES encryption (or not):

#define ENCRYPTKEY    "TOPSECRETPASSWRD" // Use the same 16-byte key on all nodes

// Use ACKnowledge when sending messages (or not):

#define USEACK        true // Request ACKs or not

// Packet sent/received indicator LED (optional):

#define LED          A3 // LED positive pin

#define PGOOD         3 // PGOOD


#define MOSFET      9//


// Create a library object for our RFM69HCW module:


int level;

RFM69 radio;


void setup()
{
  // Open a serial port so we can send keystrokes to the module:

    
    pinMode(LED,OUTPUT);
    digitalWrite(LED,LOW);
    pinMode(MOSFET,OUTPUT); //mosfet    
    pinMode(PGOOD, INPUT); // PGOOD

}

void loop()
{

wdt_enable(WDTO_8S);
 
level = digitalRead(PGOOD);

if(level == HIGH)

{

 char Tstr[10];

  
  digitalWrite(MOSFET, HIGH); // turn on MOSFET
  delay(100);
  radio.initialize(FREQUENCY, MYNODEID, NETWORKID);
  radio.setHighPower(); // Always use this for RFM69HCW

  // Turn on encryption if desired:

    radio.encrypt(ENCRYPTKEY);

   double T = radio.readTemperature();


  char buffer[50];

  
  dtostrf(T, 3,3, Tstr);

   
  static int sendlength = strlen(buffer);




sprintf(buffer, " T:%s", Tstr);

   
      radio.sendWithRetry(TONODEID, buffer, sendlength);


      Blink(LED,100);

}

else
{
sleep();
}

}



void Blink(byte PIN, int DELAY_MS)
// Blink an LED for a given number of ms
{
  digitalWrite(PIN,HIGH);
  delay(DELAY_MS);
  digitalWrite(PIN,LOW);
}

void sleep(void)
{
  digitalWrite(MOSFET, LOW); // turn on MOSFET
  set_sleep_mode(SLEEP_MODE_PWR_DOWN); //select PWR DOWN, the most power savings
  sleep_enable(); //set  SE bit
  sei(); // enable global interrupts
  sleep_cpu(); //actually sleep
  sleep_disable(); //code reaches this point after interrupt
}