#include <Arduino.h>
#include "font.h"

#include <Wire.h>
#include "SSD1306.h"

#include <SPI.h>
#include <LoRa.h>

#define OLED_ADDR 0x3C
#define OLED_SDA  4
#define OLED_SCL  15
#define OLED_RST  16


SSD1306 display(OLED_ADDR, OLED_SDA, OLED_SCL);

#define SX1278_SCK  5
#define SX1278_MISO 19  
#define SX1278_MOSI 27
#define SX1278_CS   18
#define SX1278_RST  14
#define SX1278_IRQ  26



#define BAND 915000000.00
#define spreadingFactor 7
#define SignalBandwidth 31.25E3
#define preambleLength 8
#define codingRateDenominator 8

//Analog Input

#define ANALOG_PIN_0 36
#define ANALOG_PIN_1 37
#define ANALOG_PIN_2 38
#define ANALOG_PIN_3 39


byte localAddress = 0xBB; // address of this device

byte dataBuf[]={0,0,0,0,0};

int counter = 0;

void setup()
{
  // Reset the display
  pinMode(OLED_RST, OUTPUT);
  digitalWrite(OLED_RST, LOW);
  delay(50);
  digitalWrite(OLED_RST, HIGH);

  // Initialize and wait for UART
  Serial.begin(115200);
  while (!Serial);

  // Initialize the display
  display.init();
  display.flipScreenVertically();
  display.setTextAlignment(TEXT_ALIGN_CENTER);

  



  // Start LoRa
  SPI.begin(SX1278_SCK, SX1278_MISO, SX1278_MOSI, SX1278_CS);
  LoRa.setPins(SX1278_CS, SX1278_RST, SX1278_IRQ);

  if(!LoRa.begin(BAND)) {
    Serial.println("Starting LoRa failed!");
    while(1);
  }

  Serial.println("LoRa started successful!");


  Serial.print("LoRa Frequency: ");
  Serial.print(BAND/1000000);
  Serial.println(" MHz");


  Serial.println("LoRa Spreading Factor: ");
  Serial.println(spreadingFactor);
  LoRa.setSpreadingFactor(spreadingFactor);

  Serial.print("LoRa Signal Bandwidth: ");
  Serial.println(SignalBandwidth);
  LoRa.setSignalBandwidth(SignalBandwidth);

  LoRa.setCodingRate4(codingRateDenominator);

  LoRa.setPreambleLength(preambleLength);

  // Print an empty line
  Serial.println();

  // Wait for a second
  delay(1000);
}
void loop()
{
//  dataBuf={byte(localAddress),byte(ANALOG_PIN_0),byte(ANALOG_PIN_1),byte(ANALOG_PIN_2),byte(ANALOG_PIN_3),byte(ANALOG_PIN_3)}
  //Serial.print("Sending packet: "dataBuf");
  Serial.println(counter);

  LoRa.beginPacket();
  LoRa.write(dataBuf,5);
  LoRa.write(analogRead(ANALOG_PIN_0));
 // LoRa.write(analogRead(ANALOG_PIN_1));
 // LoRa.write(analogRead(ANALOG_PIN_2));
 // LoRa.print(analogRead(ANALOG_PIN_3));
  LoRa.endPacket();
  
  
  Serial.println(localAddress);
  Serial.println(analogRead(ANALOG_PIN_0));
  //Serial.println(analogRead(ANALOG_PIN_1));
  //Serial.println(analogRead(ANALOG_PIN_2));
 // Serial.println(analogRead(ANALOG_PIN_3));
 
  display.clear();
 
  display.drawString(63, 0, "SENDING");
  display.drawString(63, 31, String(counter));
  display.display();
 
  counter++;
  delay(10000);
}