// .h team code grabber
#include <uCRC16BPBLib.h>
#include <VirtualWire.h>

uCRC16BPBLib crc;

const int receive_pin = 11;
const int trans_pin = 7;
const int led_pin = 13;
const int transmit_en_pin = 3;
uint8_t hash1, hash2; // for receiver and transmitter
int val; // 0 or 1 bluetooth
uint8_t buf[VW_MAX_MESSAGE_LEN];
uint8_t buflen = VW_MAX_MESSAGE_LEN;

void setup()
{
    delay(1000);
    Serial.begin(9600);	// Debugging only
    Serial.println("setup");
    vw_set_tx_pin(trans_pin);
    vw_set_rx_pin(receive_pin);
    vw_set_ptt_pin(transmit_en_pin);
    vw_setup(2000);
    vw_rx_start();
}

void loop()
{
  if(Serial.available()){
    val = Serial.read(); //for bluetooth hc05
    if(val=='0'){
    crc.reset();

    if (vw_get_message(buf, &buflen))
    {
	int i;

	Serial.print("HEX: ");

	for (i = 0; i < buflen; i++)
	{
	    Serial.print(buf[i], HEX);
	    Serial.print(' ');
	}
  Serial.print("\nDEC: ");
  for (i = 0; i < buflen; i++)
  {
      Serial.print(buf[i], DEC);
      Serial.print(' ');
  }
  //checksum
  Serial.print("\nCRC16 receiver: ");
   crc.feedByte(buf[1]);
   crc.feedByte(buf[2]);
   crc.feedByte(buf[3]);

  Serial.println(crc.getResult(), HEX);

  //uint8_t keyword[7];
//  memcpy(buf, keyword, 7);
//  Serial.println(keyword);
//  buf[1] += 174;

  }
    }
    if(val=='1'){
 //transmitter
  buf[3] += 100;
  crc.reset();
 Serial.print("\nCRC16 receiver: ");
   crc.feedByte(buf[1]);
   crc.feedByte(buf[2]);
   crc.feedByte(buf[3]);
   hash2 = crc.getResult();
  Serial.println(hash2, HEX);

 if(hash1==hash2){
    Serial.print("Sending HEX: ");
    for(int i=0; i < 7; i++)
    {
      Serial.print(buf[i], HEX);
      Serial.print(' ');
    }
    Serial.print("\nSending DEC: ");
    for(int i=0; i < 7; i++){
      Serial.print(buf[i], DEC);
      Serial.print(' ');
    }
    Serial.println();
  digitalWrite(led_pin, HIGH);

  vw_send(buf, 7);
  vw_wait_tx(); // Wait until the whole message is gone
  digitalWrite(led_pin, LOW);
    }
  }  //val == 1
  delay(1000);
 } //serial bluetooth
}