You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
79 lines
2.6 KiB
79 lines
2.6 KiB
// Import LoRa Module Library
|
|
#include "RYLR896.h"
|
|
|
|
// Drone ID, for future use when using with multiple drones
|
|
#define DRONE_ID 1
|
|
|
|
int MQ2 = A0;
|
|
int MQ4 = A1;
|
|
int MQ5 = A2;
|
|
int MQ6 = A3;
|
|
int MQ7 = A4;
|
|
int MQ8 = A5;
|
|
int MQ9 = A6;
|
|
int MQ135 = A7;
|
|
|
|
// Define Serial interfaces for GPS and LoRa (easier configuration)
|
|
#define GPS_SERIAL Serial1
|
|
#define LORA_SERIAL Serial3
|
|
|
|
// Create global LoRa library object
|
|
RYLR896* lora;
|
|
|
|
void setup() {
|
|
// Initialize Serial0 for debug messages
|
|
Serial.begin(115200);
|
|
Serial.println("Starting up...");
|
|
// Set sensor pin modes
|
|
pinMode(MQ2, INPUT);
|
|
pinMode(MQ4, INPUT);
|
|
pinMode(MQ5, INPUT);
|
|
pinMode(MQ6, INPUT);
|
|
pinMode(MQ7, INPUT);
|
|
pinMode(MQ8, INPUT);
|
|
pinMode(MQ9, INPUT);
|
|
pinMode(MQ135, INPUT);
|
|
Serial.println("Initializing communications...");
|
|
// Initialize LoRa's serial interface outside the library because of
|
|
// weird HardwareSerial.h behavior when called within another library.
|
|
Serial3.begin(115200);
|
|
// Initialize LoRa Library
|
|
lora = new RYLR896(&LORA_SERIAL, 115200);
|
|
// Set RF Parameters for close range message transmission
|
|
// (see: page 2, http://reyax.com/wp-content/uploads/2018/01/REYAX-Lora-AT-COMMAND-GUIDE_EN.pdf)
|
|
lora->SetRFParamsLessThan3KM();
|
|
// Set AES encryption passcode
|
|
lora->SetAESPassword("FABC0002EEDCAA90FABC0002EEDCAA90");
|
|
Serial.println("Initializing GPS...");
|
|
// Initialize GPS' serial interface
|
|
GPS_SERIAL.begin(9600);
|
|
Serial.println("Setup completed!");
|
|
}
|
|
|
|
void loop() {
|
|
// Read sensor values
|
|
float GAS_MQ2 = analogRead(MQ2);
|
|
float GAS_MQ4 = analogRead(MQ4);
|
|
float GAS_MQ5 = analogRead(MQ5);
|
|
float GAS_MQ6 = analogRead(MQ6);
|
|
float GAS_MQ7 = analogRead(MQ7);
|
|
float GAS_MQ8 = analogRead(MQ8);
|
|
float GAS_MQ9 = analogRead(MQ9);
|
|
float GAS_MQ135 = analogRead(MQ135);
|
|
|
|
// Once we have available GPS data
|
|
if (GPS_SERIAL.available() > 0){
|
|
// Store NMEA sentence
|
|
String gpsData = GPS_SERIAL.readStringUntil('\n');
|
|
// Since we are only keeping GPRMC NMEA sentences, only enter
|
|
// if we are on that sentence (see http://aprs.gids.nl/nmea/#rmc)
|
|
if (gpsData.startsWith("$GPRMC")){
|
|
// Construct message to send over LoRa
|
|
String data = String(DRONE_ID) + "|" + gpsData + "|" + "MQ2=" + String(GAS_MQ2) + "|" + "MQ4=" + String(GAS_MQ4) + "|" + "MQ5=" + String(GAS_MQ5) + "|" + "MQ6=" + String(GAS_MQ6) + "|" + "MQ7=" + String(GAS_MQ7) + "|" + "MQ8=" + String(GAS_MQ8) + "|" + "MQ9=" + String(GAS_MQ9) + "|" + "MQ135=" + String(GAS_MQ135);
|
|
// Print a debug message on Serial0 with the data we are about to send
|
|
Serial.println(data);
|
|
// Transmit message over LoRa
|
|
lora->Send(data);
|
|
}
|
|
}
|
|
}
|
|
|