#include <Wire.h>
#include <SPI.h>
#include <LoRa.h>
#include <Adafruit_MPU6050.h>
#include <Adafruit_Sensor.h>
#include <OneWire.h>
#include <DallasTemperature.h>

#define ONE_WIRE_BUS 4
#define I2C_SDA 5
#define I2C_SCL 6

#define LORA_SCK  18
#define LORA_MISO 19
#define LORA_MOSI 1
#define LORA_SS   7
#define LORA_RST  10
#define LORA_DIO0 3

Adafruit_MPU6050 mpu;
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature tempSensor(&oneWire);

void setup() {
  Serial.begin(115200);
  Wire.begin(I2C_SDA, I2C_SCL);

  if (!mpu.begin()) {
    Serial.println("MPU6050 not found!");
    while (1) delay(10);
  }
  mpu.setAccelerometerRange(MPU6050_RANGE_2_G);
  mpu.setGyroRange(MPU6050_RANGE_250_DEG);
  tempSensor.begin();

  SPI.begin(LORA_SCK, LORA_MISO, LORA_MOSI, LORA_SS);
  LoRa.setPins(LORA_SS, LORA_RST, LORA_DIO0);

  if (!LoRa.begin(433E6)) {   // match this frequency on your receiver too
    Serial.println("LoRa init failed!");
    while (1) delay(10);
  }
  Serial.println("N1 Reference node online: MPU6050 + DS18B20 + LoRa TX");
}

void loop() {
  sensors_event_t a, g, temp;
  mpu.getEvent(&a, &g, &temp);

  tempSensor.requestTemperatures();
  float ambientTemp = tempSensor.getTempCByIndex(0);

  float pitch = atan2(a.acceleration.y,
                sqrt(a.acceleration.x * a.acceleration.x +
                     a.acceleration.z * a.acceleration.z)) * 180.0 / PI;

  // Build a simple CSV packet: nodeID,pitch,temp
  String packet = "N1," + String(pitch, 3) + "," + String(ambientTemp, 2);

  LoRa.beginPacket();
  LoRa.print(packet);
  LoRa.endPacket();

  Serial.print("Sent: "); Serial.println(packet);

  delay(1000);
}