#include "EEPROM.h"
#include "cc1101.h"

// The LED is wired to the Arduino Output 4 (physical panStamp pin 19)
#define LEDOUTPUT 4

// The connection to the hardware chip CC1101 the RF Chip
CC1101 cc1101;

byte b;
byte i;
byte syncWord = 199;
long counter=0;
byte chan=0;

// a flag that a wireless packet has been received
boolean packetAvailable = false;

void blinker(){
  digitalWrite(LEDOUTPUT, HIGH);
  delay(100);
  digitalWrite(LEDOUTPUT, LOW);
  delay(100);
}

/* Handle interrupt from CC1101 (INT0) gdo0 on pin2 */
void cc1101signalsInterrupt(void){
  // set the flag that a package is available
  packetAvailable = true;
}

void setup()
{
  Serial.begin(9600);
  Serial.println("start");
  
  // setup the blinker output
  pinMode(LEDOUTPUT, OUTPUT);
  digitalWrite(LEDOUTPUT, LOW);
  
  // blink once to signal the setup
  blinker();
  // initialize the RF Chip
  cc1101.init();
  
  cc1101.setSyncWord(&syncWord, false);
  cc1101.setCarrierFreq(CFREQ_433);
  cc1101.disableAddressCheck(); //if not specified, will only display "packet received"
  //cc1101.setTxPowerAmp(PA_LowPower);
   
  Serial.print("CC1101_PARTNUM "); //cc1101=0
  Serial.println(cc1101.readReg(CC1101_PARTNUM, CC1101_STATUS_REGISTER));
  Serial.print("CC1101_VERSION "); //cc1101=4
  Serial.println(cc1101.readReg(CC1101_VERSION, CC1101_STATUS_REGISTER));
  Serial.print("CC1101_MARCSTATE ");
  Serial.println(cc1101.readReg(CC1101_MARCSTATE, CC1101_STATUS_REGISTER) & 0x1f);
  
  attachInterrupt(0, cc1101signalsInterrupt, FALLING);
  
  Serial.println("device initialized");
  }
  
  void ReadLQI()
  {
    byte lqi=0;
    byte value=0;
    lqi=(cc1101.readReg(CC1101_LQI, CC1101_STATUS_REGISTER));
    value = 0x3F - (lqi & 0x3F);
    Serial.print("CC1101_LQI ");
    Serial.println(value);
  }

void ReadRSSI()
{
  byte rssi=0;
  byte value=0;
  
  rssi=(cc1101.readReg(CC1101_RSSI, CC1101_STATUS_REGISTER));
  
  if (rssi >= 128)
  {
    value = 255 - rssi;
    value /= 2;
    value += 74;
  }
  else
  {
    value = rssi/2;
    value += 74;
  }
  Serial.print("CC1101_RSSI ");
  Serial.println(value);
}

void loop()
{
  if(packetAvailable){
    Serial.println("packet received");
    // Disable wireless reception interrupt
    detachInterrupt(0);
    
    ReadRSSI();
    ReadLQI();
    // clear the flag
    packetAvailable = false;
    
    CCPACKET packet;
   
    if(cc1101.receiveData(&packet) > 0){
//      Serial.println("\r\n--------------------------------");
//      Serial.print("CC1101 have news! - ");
//      Serial.print("Package len = ");
//      Serial.print(packet.length);
//      Serial.print(" lgi=");
//      Serial.print(packet.lqi);
//      Serial.print(" rssi=");
//      Serial.print(packet.rssi);
//      Serial.print(" CRC=");
//      Serial.println(packet.crc_ok);
//      
        if(!packet.crc_ok) {
          Serial.println("crc not ok");
        }
  
      if(packet.length > 0){
        Serial.print("packet: len ");
        Serial.print(packet.length);
        Serial.print(" data: ");
        for(int j=0; j<packet.length; j++){
          Serial.print(packet.data[j],HEX);
          Serial.print(" ");
        }
        Serial.println(".");
      }
    }
    // Enable wireless reception interrupt
    attachInterrupt(0, cc1101signalsInterrupt, FALLING);
  }
}